SYNTHOS RESEARCH

HEICO HEI

Industrials · Aerospace & Defense · Synthos Deep Dive · 2026-08-04

$360.44
Watch — Hold for existing owners, no new money at 52x FY2027E. The business is doing better than at any point in the dataset (Q2 FY2026 revenue plus 25.3%, EPS plus 48.2%, 35.5% incremental operating margins) and the knowledge base underwrites the franchise at conviction 65-85. But the stock is 1.3% below its all-time high after a 34.3% three-month run, consensus PT of $376 offers 4.3%, and the base fair value of $351 sits BELOW spot. Great business, no entry. Wait for a drawdown or a consensus reset.

The Overview

When an airline needs a replacement part for a jet engine, it can buy it from the engine manufacturer — General Electric, Pratt and Whitney, Rolls-Royce — or it can buy an approved copy. HEICO makes the approved copies. The regulator certifies them, they work, and they cost roughly 30 to 40 percent less. That is the whole business, and it has made the Mendelson family, who have run it since 1990, one of the great records in American industry: sales up about 15 percent a year, profits up 18 percent, for three decades.

Two things make it unusually safe. First, the quality record — an expert we track noted the company has sold more than 80 million parts with zero safety directives or in-flight shutdowns, which is a record no engine maker can match. Second, and this is the clever bit: HEICO deliberately limits how much of the market it takes. It caps itself around 30 percent of any given part and stays away from the parts that carry the highest safety consequences. Why hold back? Because if it took the whole market, the engine makers would slash prices and destroy the profit pool for everyone. By staying small enough to be tolerated, HEICO keeps its 30-40 percent discount profitable forever. That is a rare kind of discipline.

And business right now is excellent. The most recent quarter in our data — three months to April 2026 — showed revenue up 25 percent and profits up 48 percent, beating what analysts expected by nearly a quarter. Better still, of every extra dollar of sales, about 35 cents dropped through to operating profit, well above the company's usual 23 cents. That is the signature of a business getting genuinely more profitable, not just bigger.

So why are we saying don't buy it? Because of the price. At $360 the stock costs about 52 times what analysts think it will earn in the year to October 2027 — for comparison, the average large US company trades around 20 to 25 times. You are paying a very full price for the quality, and you are paying it at the worst possible moment: the stock is within 1.3 percent of its record high, up 34 percent in three months, and hasn't had so much as a 2 percent dip. Analysts' average target is $376, only 4 percent higher — and their lowest target, $350, is below today's price. Our own estimate of fair value, $351, is also below today's price.

The business deserves a premium. It does not deserve this premium at this moment. Wait for a real pullback.


Putting a number on it: our fair-value estimate is $351 against a current price of $360.44 — a premium price for a business we still like.

Our summary metrics

Downside Risk (lower = safer)
4/10 · Moderate
Business risk is genuinely low; valuation risk is what pushes this to a 4. The operating picture is fortress-grade — FY2025 gross margin 39.8%, operating margin 22.7%, TTM interest coverage 9.0x, net debt of $1.976B against $1.220B of FY2025 EBITDA (1.62x, and 1.74x on the TTM measure), current ratio 2.92x, FY2025 free cash flow of $861.38M on $690.38M of net income (125% conversion), and capex of just 1.6% of revenue. Family owner-operators. The knowledge base adds an operational-quality datum at conviction 70 — over 80 million parts sold with zero service bulletins, airworthiness directives or in-flight shutdowns. What earns a 4 rather than a 2 is (a) the multiple itself, 52.3x FY2027E consensus EPS and 38.4x TTM EV/EBITDA, which is the actual downside mechanism here; (b) balance-sheet composition — goodwill plus intangibles are $5.133B, or 60.4% of the $8.500B asset base, with tangible book value per share at NEGATIVE $3.73; (c) dependence on a continuing acquisition pipeline, with $629.83M spent in FY2025 alone; and (d) cyclical exposure to commercial air traffic, though the knowledge base argues at conviction 70 that HEICO is counter-cyclical because airlines adopt PMA harder when they are cutting costs.
Growth Quality
8/10 · Very High
High-quality, self-funded, accelerating. Five-year revenue CAGR FY2020 to FY2025 is 20.2% ($1.787B to $4.485B) with net income compounding 17.1%. FY2025 revenue grew 16.3% with Flight Support Group plus 18.1% to $3.117B (68.8% of segment revenue) and Electronic Technologies Group plus 11.8% to $1.413B. Q2 FY2026 accelerated hard — revenue plus 25.3%, operating income plus 39.1%, EPS plus 48.2%, and an operating margin of 25.5% against 22.9% a year earlier. The tell that this is real rather than bought is the incremental operating margin — $98.52M of extra operating income on $277.89M of extra revenue is 35.5%, more than 13 points above the FY2025 average margin of 22.7%, which acquired distribution revenue does not produce. HEICO has also beaten consensus EPS in all five reported quarters in the file (1.66 versus 1.33, 1.35 versus 1.28, 1.33 versus 1.22, 1.26 versus 1.13, 1.12 versus 1.03). Capped at 8 rather than 9 for two honest reasons — consensus models growth halving from 18.1% (FY2026E) to 8.1% (FY2028E), and the dataset does NOT disclose organic versus acquired growth, so we cannot verify the split.
Exponential Potential
4/10 · Moderate
A compounder by design, not an exponential — and deliberately so. The single most revealing claim in the knowledge base (Business Breakdowns, 2024-03-31, conviction 75) is that HEICO runs a prisoner's-dilemma strategy that caps PMA share near 30% and avoids life-limited parts specifically so OEMs stay rational and do not cut price. A company that voluntarily limits its own penetration to protect industry economics is the structural opposite of an exponential. The runway is long — global fleet hours, an Electronic Technologies Group with defense-electronics margins, and a repeatable bolt-on machine that spent $629.83M in FY2025 — but consensus itself models revenue growth decelerating to 8.1% by FY2028E and 7.9% by FY2029E. 4 out of 10 credits a very long compounding runway and withholds everything that would require a step-change in the growth rate.
Fair value$351 $241–$449
What does “fair value” mean?

Fair value is Synthos’s estimate of what one share is worth today, based on our model of the company’s future cash generation and the risks to it. It is not a price target or a prediction of where the stock trades next quarter — it’s the price where we think risk and reward are balanced. Above it, you’re paying for outcomes better than our base case; below it, the market is offering a margin of safety.

The model’s inputs and weightings are proprietary — they’re the product. What we publish is the output, plus an independent, public-math cross-check further down the page (“Check our number”) so you can judge it for yourself.

What do the 5 tiers mean? (Core · Tactical · Watch · Hold · Avoid)
Buy — CoreOwn it as a foundation — start or add now, size it for years, let dips be gifts.
Buy — TacticalGood price + confirmed trend + a defined exit — buy the setup, not a marriage.
WatchWe want the business, just not at this price/setup — act only when the listed trigger hits.
HoldFine to keep if you own it — no reason to buy more; new money does better elsewhere.
AvoidDon't own it — the problem is the business or the expectations, so a cheaper price won't fix it.

The Road Ahead

What we expect to matter in each window, and the evidence that would prove us wrong.

Short term 0-6 months

No differentiated view
Driver
The stock is priced for perfection and sitting on top. $360.44 is 1.33% below the 52-week high of $365.31, 5.8% above a rising 50-day average of $340.65, and 13.3% above a rising 200-day average of $318.17. The maximum drawdown from peak over the window is just -1.33%, meaning there has been no correction at all to buy. RSI is 61.2 with MACD at plus 4.91, and the stock is up 34.3% over three months against SPY at plus 5.1%. Consensus PT of $376 is 4.3% away, and the LOW target of $350 is BELOW spot. Q3 earnings land 2026-08-24 into all of that.
What we’re watching
The 2026-08-24 print. Consensus EPS $1.50 on $1.348B of revenue, against a company that has beaten in all five quarters in the file. A sixth beat with the incremental margin holding above 30% justifies the multiple for another quarter; anything in line or short, at 52x FY2027E, is where the air comes out. Also watch the 50-day average at $340.65 as the first real support.
Confidence
Medium

Medium term 6-24 months

Neutral
Driver
Consensus models EPS of $6.10 (FY2026E) to $6.89 (FY2027E) to $7.80 (FY2028E) on 15, 15 and 12 analysts — deep coverage — which rolls the multiple down from 59.1x to 52.3x to 46.2x at a constant price. That is mechanical rolldown, not a re-rating. Revenue growth in the same series decelerates 18.1 percent to 10.2 percent to 8.1 percent. So the medium-term question is simply whether HEICO out-earns a consensus that has been too low every quarter in the file, and whether a 46x-and-falling multiple survives the deceleration.
What we’re watching
The incremental operating margin (35.5% in Q2 FY2026 versus a 22.7% FY2025 average) — if it holds, consensus is too low and the multiple is defensible; the acquisition cadence ($347.31M FY2022, $2.422B FY2023 Wencor, $219.29M FY2024, $629.83M FY2025) and whether deals stay accretive; and Non-US revenue, which grew 18.9% in FY2025 against North America at 14.7% and is now 38.1% of the total.
Confidence
Medium

Long term 2+ years

Tailwind
Driver
The franchise is the thesis and it is durable. PMA parts undercut OEMs by 30-40% with the discount widening over time by design; the customer lock-in is high (We Study Billionaires, 2025-11-27, conviction 65); the quality record is unmatched; the Mendelson family has compounded sales 15%, net income 18% and returns 21% since 1990 on an owned-forever, decentralized model (Business Breakdowns, 2024-03-31, conviction 85); and the Electronic Technologies Group adds mission-critical defense electronics at 30%-plus margins with low cyclicality. Capex at 1.6% of revenue and 125% free-cash-flow conversion mean the compounding is self-funded. None of that is in question. The price is.
What we’re watching
Whether the disciplined ~30% PMA share cap holds as HEICO scales (the strategy that protects industry pricing is also the ceiling on penetration); whether the bolt-on pipeline stays available at sensible multiples now that goodwill and intangibles are 60.4% of assets; and whether the ETG defense-electronics leg keeps growing double-digit (plus 11.8% in FY2025) rather than lagging Flight Support.
Confidence
High

Exponential Potential

Exponential Potential
4/10 · Moderate
A compounder by design, not an exponential — and deliberately so. The single most revealing claim in the knowledge base (Business Breakdowns, 2024-03-31, conviction 75) is that HEICO runs a prisoner's-dilemma strategy that caps PMA share near 30% and avoids life-limited parts specifically so OEMs stay rational and do not cut price. A company that voluntarily limits its own penetration to protect industry economics is the structural opposite of an exponential. The runway is long — global fleet hours, an Electronic Technologies Group with defense-electronics margins, and a repeatable bolt-on machine that spent $629.83M in FY2025 — but consensus itself models revenue growth decelerating to 8.1% by FY2028E and 7.9% by FY2029E. 4 out of 10 credits a very long compounding runway and withholds everything that would require a step-change in the growth rate.

What could take this further than the base case — and where the market may be underpricing it. Full forward-growth and acceleration math in Deeper analysis, §4 below.

Deeper analysis

Technicals, fundamentals, valuation, and the full expert-claim evidence panel — the detail behind the numbers above.

Check our number Market-implied growth ≈ 33%/yr This isn’t how we calculate fair value — it’s public math you can verify yourself. To justify today’s $360, earnings would have to compound roughly 33% a year for 10 years (9% discount rate). Analysts forecast ~20%/yr, so the market is pricing in MORE than what the Street expects.

Reference table

Street consensus$376 (median $370, high $410, low $350 — below spot) · 22 buy / 13 hold / 0 sell
Valuation59.1x FY2026E · 52.3x FY2027E · 46.2x FY2028E · 40.1x FY2029E consensus EPS · 64.4x TTM diluted · 38.4x TTM EV/EBITDA · 54.2x TTM free cash flow · P/B 10.5x
ConvictionModerate — 9 KB claims, 2 tracked sources, all bullish (conviction 65-85), all on the business not the price. The deep 7-claim block is dated 2024-03-31.
TechnicalsNo drawdown to buy. -1.33% from the 52-week high of $365.31; +5.8% over a rising 50-DMA ($340.65); +13.3% over a rising 200-DMA ($318.17); RSI 61.2; +34.3% in three months versus SPY +5.1%
Position sizingQuality-compounder sleeve. Hold existing; zero new money at 52x. Build a starter only on a 20%-plus drawdown toward the 200-DMA.

What the experts actually said 1 traceable claims on HEI · showing the highest-conviction voices

“HEICO is a well-managed cash-flow compounder acting as a low-cost second source (PMA) of aircraft parts with durable moats.”
Business Breakdownsbullishconviction 852024-03-31business_breakdowns-enpsIIHSmHY:6802fee59f

Every claim reconciles to a real claim_id in the Synthos knowledge base — this is the evidence the verdict is built on, not vibes. Management (the company itself) is shown but half-weighted; one cautionary voice is included on purpose.

Price & moving averages 12 months · 50 & 200-day averages · 52-week range

253283314344375Aug '25Oct '25Dec '25Mar '26May '26Aug '2652w hi $366Price 36650-DMA 342200-DMA 31852w lo $261

Solid line = price · dashed line = 50-day average · dotted line = 200-day average · the two thin horizontal lines mark the 52-week high and low. Price above both averages is an uptrend.

Data summary: last close $366.30, 7% above the 50-day average ($342), 15% above the 200-day average ($318) — an uptrend. 0% below the 52-week high of $366, 40% above the 52-week low of $261.

Bollinger Bands 20-day average ± 2 standard deviations

245278311344377Aug '25Oct '25Dec '25Mar '26May '26Aug '26Price 36620-day avg 350

The shaded band widens when the stock gets more volatile. Riding the upper edge = strong momentum (sometimes stretched); the lower edge = weak / potentially oversold.

Data summary: price $366.30 is currently at/above the upper band (stretched) (band $334–$366).

RSI (14) momentum gauge · 0–100

705030Aug '25Oct '25Dec '25Mar '26May '26Aug '26RSI 63.9

Above 70 (overbought zone, shaded) = overbought, below 30 (oversold zone, shaded) = oversold. Currently 64.

MACD 12 / 26 / 9 · trend & momentum

0Aug '25Oct '25Dec '25Mar '26May '26Aug '26MACD 5.6signal 4.6

The MACD line crossing above the signal line (bars flip to the up color) = momentum turning up; crossing below (bars flip to the down color) = turning down. Bar height = the size of that gap.

Data summary: MACD is currently above its signal line by 0.98, positive momentum.

Relative performance vs S&P 500 & its sector (XLI (sector)), set to 100 a year ago

7487100113126Aug '25Oct '25Dec '25Mar '26May '26Aug '26XLI (sector) 122S&P 500 121HEI 109

Solid = HEI · dashed = S&P 500 · dotted = XLI (sector). A rising line means it is beating that benchmark — the sector line shows whether it is a leader or laggard within its own group.

Forward revenue & earnings actual → estimate · "FY" = fiscal year, "E" = estimate

02468$2BFY22EPS $3$3BFY23EPS $3$4BFY24EPS $4$4BFY25EPS $5$5BFY26EEPS $6$6BFY27EEPS $7$6BFY28EEPS $8$7BFY29EEPS $9

Darker bars = actual results, brighter = analyst estimates. Taller bars to the right = expected growth.

Key stats an RIA wants

Price$360.44
Market cap$50B
P/E trailing64×
P/E FY26E / FY27E59× / 52×
EV / Sales10.7×
EV / EBITDA38.4×
Gross margin40.1%
Net margin16.1%
Dividend yield0.07%
Beta1.03
52-wk range$261 – $366
RSI(14)61
50 / 200-DMA$341 / $318
12-mo return+10% (SPY +20%)
Street target$376 ($350–$410)
Analyst grades22 Buy · 13 Hold · 0 Sell
FMP ratingB-
Next earnings2026-08-24 — Q3 FY2026 earnings. Consensus EPS $1.50 and revenue $1.348B. Against Q3 FY2025 actuals of $1.26 EPS and $1.148B revenue, that is plus 19.0% EPS and plus 17.4% revenue, so consensus is already extrapolating the Q2 acceleration. A miss against a 52x multiple is the asymmetry.

1. What they actually sell — the two segments, with real numbers

HEICO runs two segments. Fiscal years end 31 October.

SegmentFY2025 revenueFY2024YoYShare of segment revenueWhat it is
Flight Support Group (FSG)$3.117B$2.639B+18.1%68.8%PMA replacement parts for jet engines and aircraft, thermal insulation, distribution of hydraulic/pneumatic/electro-mechanical components, and repair-and-overhaul services
Electronic Technologies Group (ETG)$1.413B$1.264B+11.8%31.2%Electro-optical infrared simulation and test, lasers, power conversion, EMI/RFI shielding, high-voltage interconnects, high-speed interface products
Corporate and eliminations-$45.35M-$45.31M
Total$4.485B$3.858B+16.3%

The FSG step-change is visible in the history. FSG went $1.255B (FY2022) to $1.770B (FY2023) to $2.639B (FY2024, plus 49.1%) to $3.117B (FY2025). That FY2024 jump is the Wencor acquisition annualising — the cash flow statement shows $2.422B of acquisitions in FY2023 funded by $2.163B of net debt issuance. It was the largest capital-allocation decision in the file and it worked.

Geographic mix (FY2025): North America $2.776B (61.9%), Non-US $1.709B (38.1%). Non-US grew 18.9% versus North America at 14.7% — international is the faster leg. (Note: the segment labels changed between FY2023 and FY2024, from "Other Countries" to "Non-US", so the pre-FY2024 comparison is not exactly like-for-like.)

2. The moat — and the most interesting thing in this dive

The knowledge base contains a genuinely non-obvious explanation of why HEICO's economics persist, and it is worth stating in full because it is also the reason the Exponential score is only 4.

Business Breakdowns, 2024-03-31, conviction 75: "HEICO's prisoner's-dilemma strategy caps PMA share at ~30% and avoids life-limited parts, so OEMs stay rational and don't cut price."

And its companion, same source and date, conviction 75: "HEICO undercuts OEMs 30-40%, widening the discount over time by not raising price, which deepens cost savings and customer lock-in."

Put those together and you have the whole model. HEICO's parts are cheaper. It does not raise price, so the discount widens every year, which deepens customer dependence. And it refuses to take more than about 30% of any part's market, because at higher penetration the OEM's rational response flips from "tolerate it" to "cut price and kill it." HEICO is voluntarily leaving revenue on the table to preserve the price umbrella it lives under.

That is an extraordinarily durable structure — and it is also a self-imposed ceiling. Most moats are about taking more share. This one is about taking exactly enough.

The other moat components, from the same source block:

Moat: wide, durable and deliberately self-limiting.

3. The Q2 FY2026 acceleration — and the number that says it's real

This is the strongest operating quarter in the dataset and it deserves its own arithmetic.

Q2 FY2026 (2026-04-30)Q2 FY2025Change
Revenue$1.376B$1.098B+25.3%
Gross profit$569.52M$466.55M+22.1%
Operating income$350.44M$251.92M+39.1%
Operating margin25.5%22.9%+256 bp
Net income$233.80M$156.79M+49.1%
Diluted EPS$1.66$1.12+48.2%
Consensus EPS$1.33beat by 24.8%
Consensus revenue$1.2503Bbeat by 10.0%

The number that matters most: incremental operating margin. Operating income rose $98.52M on $277.89M of additional revenue — an incremental operating margin of 35.5%, against an FY2025 company average of 22.7%. Thirteen points of positive spread.

Why that specific number is load-bearing. The bear case on any serial acquirer is that growth is bought rather than earned, and that acquired revenue dilutes margins. A 35.5% incremental margin is the opposite signature — it means the marginal dollar of revenue is far more profitable than the average dollar, which acquired distribution businesses do not deliver. This is the strongest available evidence in the dataset that the FY2026 acceleration has a genuine operating component.

Half-year FY2026: revenue $2.555B versus $2.128B, plus 20.1%; EPS $3.01 versus $2.32, plus 29.7%.

And the beat record is perfect across the file — HEICO beat consensus EPS in all five reported quarters: $1.66 vs $1.33, $1.35 vs $1.28, $1.33 vs $1.22, $1.26 vs $1.13, $1.12 vs $1.03. That matters for section 6, because it argues the out-year consensus deceleration may be too conservative.

4. The serial-acquirer question — what the data does and does not show

The task frame for HEICO is organic versus acquired growth and incremental margins. Here is what is verifiable and what is not.

What the dataset does NOT contain: HEICO's organic-versus-acquired revenue split. It is not disclosed in this file. We are not going to estimate it. Any dive that gives you a precise organic growth rate for HEICO from this dataset is inventing it.

What the dataset DOES show:

Fiscal yearAcquisitions (cash)Operating cash flowCapexFree cash flowAcquisitions as % of FCF
FY2025-$629.83M$934.27M-$72.89M$861.38M73.1%
FY2024-$219.29M$672.37M-$58.26M$614.11M35.7%
FY2023-$2.422B (Wencor)$448.74M-$49.43M$399.30M— (debt-funded)
FY2022-$347.31M$467.86M-$31.98M$435.87M79.7%

Read it straight. In a normal year HEICO redeploys roughly three-quarters of its free cash flow into acquisitions — $629.83M against $861.38M in FY2025. Dividends took just $31.97M and buybacks $22.39M. This is a compounding machine that reinvests almost everything, and the capital-allocation record is the reason the knowledge base rates management at conviction 85.

The honest triangulation. FY2025 revenue grew $627M ($3.858B to $4.485B) while the company spent $629.83M on acquisitions. That coincidence does not mean growth was 100% acquired — acquisitions close mid-year and contribute partial revenue, and the multiple paid is unknown. But it does mean a meaningful share of headline growth is bought, and the file cannot tell you how much. The offsetting evidence — the 35.5% incremental operating margin in Q2 FY2026 — is what argues the organic component is substantial. That is as far as the data honestly goes.

The balance-sheet consequence, which is the real cost of the model:

None of that is a problem while the deals work. It becomes a problem the moment a large acquisition is impaired, and it is why P/B of 10.5x is not a meaningful valuation anchor for this name.

5. Financials — the receipts

Dual-class caveat, and it affects every multiple above. The reported market capitalisation of $50.216B at $360.44 implies 139.32M shares, against FY2025 weighted diluted shares of 140.77M. HEICO has two listed classes — Common (HEI) and Class A (HEI.A). This dataset contains no HEI.A price. If Class A trades at a discount to Common, as dual-class B-share structures typically do, then applying the Common price to the full share count overstates the true blended market value, and every market-cap-derived multiple in this dive (EV/EBITDA, P/E, EV/Sales) is modestly overstated as a result. We cannot quantify the effect from this file and are not going to guess at it. Flag it, size the conclusion accordingly, and check the Class A price before acting on any multiple here.

6. Valuation — priced in or room?

At $360.44 (market cap ~$50.2B subject to the dual-class caveat, net debt $1.976B, EV ~$52.6B):

TTM / FY2025FY2026EFY2027EFY2028EFY2029E
Consensus EPS$4.90 (actual)$6.10$6.89$7.80$8.99
P/E64.4x (diluted TTM)59.1x52.3x46.2x40.1x
Consensus revenue$4.485B (actual)$5.295B$5.834B$6.309B$6.806B
Revenue growth+16.3%+18.1%+10.2%+8.1%+7.9%
EV/EBITDA38.4x35.7x29.9x
Analyst count (EPS)1515125

Other trailing marks: P/FCF 54.2x, P/OCF 50.4x, P/S 10.2x, EV/Sales 10.7x, P/B 10.5x, free cash flow yield 1.84%, earnings yield 1.57%.

Street position: consensus PT $376 (+4.3%), median $370, high $410 (+13.8%), low $350 (-2.9%, below spot). Ratings: 22 buy, 13 hold, 0 sell. So the Street is positive but a third of it is on the fence, and its most bearish member is already below the market price. FMP's own quantitative rating is B- with a P/E sub-score of 1 and a P/B sub-score of 1 — the quant screen is explicitly flagging valuation.

Synthos fair values:

Base sits 2.6% BELOW spot. That is the verdict in one number: on defensible arithmetic, the market has already paid for the next two years.

6a. What today's price assumes (the inversion)

At $360.44 (52.3x FY2027E, 46.2x FY2028E consensus), today's price assumes roughly:

The single most fragile assumption is the last multiple bullet. Everything about the operating business supports the estimates; nothing supports a permanent 45-50x. A move to 35x FY2027E costs 33% and requires no operational disappointment whatsoever.

6b. The return bridge (why the multiple moves)

expected return ≈ EPS growth + multiple drift + shareholder yield

Over a two-year horizon to FY2028E, consensus EPS grows from $6.10 to $7.80 — 13.1% a year. The dividend yield is 0.069% and net buybacks are trivial ($22.39M against a $50B cap), so shareholder yield is effectively zero. That leaves multiple drift as the entire swing factor.

Our base case explicitly assumes multiple COMPRESSION, from today's 52.3x FY2027E to 45x FY2028E, and we want to be precise about why. Two reasons, and neither is a criticism of the company:

1. Growth maturation. Consensus has revenue growth halving from 18.1% (FY2026E) to 8.1% (FY2028E) and 7.9% (FY2029E). Multiples follow growth rates down. At 8% revenue growth and ~13% EPS growth, 52x is a PEG near 4.

2. The rolldown is not the re-rating. 59.1x FY2026E becoming 46.2x FY2028E at an unchanged $360.44 is mechanical — it is the estimate advancing, not the market repaying you. Our base compresses the multiple the market pays at each date, from ~52x to ~45x. That is the actual re-rating assumption and it is deliberate.

So the bridge to our $351 base is: +13.1% a year of EPS growth, minus roughly 14% of cumulative multiple compression, plus ~0% yield — netting to approximately zero over two years. If instead the multiple simply holds near 50x on FY2029E, you get the $449 bull. The thesis for buying here needs multiple expansion or persistence, and that is the fragile leg. Not the earnings.

6c. Variant perception (where we differ, what would surprise)

7. Knowledge base — the panel underwrites the business, and pre-registered the price objection

9 tagged claims across 2 tracked sources. All bullish. Conviction 65-85. Breadth 2 — which is thinner than it looks, because 7 of the 9 come from a single Business Breakdowns episode dated 2024-03-31, now over two years old.

Business Breakdowns (2024-03-31, 7 claims, conviction 65-85):

We Study Billionaires (2 claims, conviction 65):

How to read this lane — and the part that matters most. Every single claim underwrites the business. Not one names a price, a target, or a valuation. And the 2025-10-23 claim does something unusual and useful: it pre-registers our exact objection, noting that the family's focus on long-run free cash flow per share "can make headline PE look unattractive today." The tracked panel is telling you that HEICO will look expensive and that the answer is to hold through it.

That is a legitimate argument and we take it seriously — it is why the verdict is Hold for existing owners rather than Sell. But it is not an argument for paying 52x on a day when the stock is 1.3% from its high with no drawdown available. Conviction on the franchise does not transfer automatically to conviction on the entry.

Adjacent theme context, labelled as NOT naming HEICO: Brent Johnson (2025-09-21, conviction 75) — "Defense and aerospace is a huge beneficiary as nations rearm and boost national-defense spending in a less cooperative world." Business Breakdowns (2026-02-01, conviction 70) — "Jet engines require extraordinary technical performance at extraordinary low cost, creating barriers as hard as semiconductor fabrication; only 3-4 primes exist." Both support the sector; neither is a HEICO claim.

8. Technicals — the problem in one chart-line

Read: the 12-month picture is a stock that went nowhere and then re-rated violently on one quarter. Momentum is genuine, the trend is intact, and there is zero margin of safety in the entry. Support is the 50-DMA at $340.65 (-5.5%), then the 200-DMA at $318.17 (-11.7%).

Insider activity is unremarkable and does not read as a signal either way: Victor Mendelson gifted 3,285 shares (2026-06-29); the Chief Accounting Officer exercised and had shares withheld in kind around $259.81 (2026-05-29) and sold 1,326 at $241.63 (2026-06-10); a director gifted 140 shares. Small, routine, mostly non-open-market. No insider buying.

9. Verdict, kill-criteria and the flip conditions

Watch. Hold for existing owners; no new money at 52.3x FY2027E.

We have no argument with HEICO the business. It is a wide-moat, family-controlled, self-funding compounder with 39.8% gross margins, 125% free-cash-flow conversion, capex at 1.6% of revenue, a perfect five-for-five beat record in this dataset, a 35.5% incremental operating margin in the most recent quarter, and a knowledge-base lane that has underwritten it at conviction 65-85 since 2024. If you own it, keep owning it — the We Study Billionaires claim about the headline P/E looking unattractive is the right frame for a holder.

We have a serious argument with the entry. At $360.44 you are paying 52.3x FY2027E and 46.2x FY2028E consensus EPS, 38.4x TTM EV/EBITDA and 54.2x trailing free cash flow, for a company whose own consensus models revenue growth halving from 18.1% to 8.1% over that window. The stock is 1.3% below its all-time high after a 34.3% three-month run, with a maximum drawdown of -1.33% — there is no dip. The consensus PT of $376 offers 4.3%, the Street's low target of $350 is below the current price, and our base fair value of $351 is 2.6% below spot. Every honest anchor available lands at or under where the stock already trades.

Pre-registered kill / do-not-add criteria:

Pre-registered flip to Stage-In (start building a position):

Where HEI fits in the Synthos Framework Portfolio. The quality-compounder / aerospace-aftermarket sleeve, as a long-duration core hold once owned at a sensible basis — but not a name to initiate here. Positioning note: HEICO's counter-cyclical characteristic (airlines adopt PMA harder when they are cutting costs, per the 2024-03-31 claim at conviction 70) makes it a genuine diversifier against cyclical industrials, which is an argument for owning it eventually and not an argument for owning it today. Logged as a tracked Synthos call (Watch / Hold-for-owners) as of 2026-08-04 at $360.44.

Single biggest risk: multiple compression into a decelerating consensus. Not the balance sheet, not the moat, not management — the multiple. 52.3x FY2027E on a consensus that has revenue growth halving to 8.1% by FY2028E is the whole exposure, and a de-rate to 35x costs 33% with nothing whatsoever going wrong operationally.

Single most fragile assumption in the price: that the market keeps paying 45-50x forward earnings for four consecutive years while the growth rate halves. Every other assumption embedded at $360.44 is supported by something in the data. That one is supported only by the fact that it has been true recently.


Provenance and disclosures