Phase Space AI

Trade Construction

Fabrinet [FN]

Fabrinet [FN] — Trade Construction

The memo issues no position verdict. This states how a position would be built if the book chose to take one, and what would invalidate it.

Vehicle: EQUITY — by necessity as well as by default

Ladder rung Vehicle Status
1 Equity Adopted. Default; no argument required
2 LEAP Not constructable. No contracts exist within ±10% of spot at any expiration ≥350 days out
3 Sub-horizon option Not offered
4 Multi-leg Not offered; cannot pass a strike-level constructability check on an absent chain

Required disclosure
Trailing 252-day realised volatility 71.4%
ATM implied volatility, ≥12-month not measurable
IV − RV UNIDENTIFIED
Quoted size at intended strike no contract exists to quote
Equity liquidity $15.0bn market cap, NYSE — ample for any size this book would take

This is the cleanest possible application of the vehicle ladder: FN fails rung 2 at the existence test, not the economics test. IV − RV is recorded as UNIDENTIFIED rather than as a zero or a peer-implied estimate. A missing input is INDETERMINATE, never a substituted number — and the framework's own record shows a VOL252 defined name silently resolving to 0 and zeroing a risk ratio without raising anything.

Position construction

Parameter Value Reasoning
Instrument FN common
Entry Scale over 2–3 tranches 71.4% realised volatility on a $414 stock is roughly a $19 daily standard deviation
Entry zone $370–415 Around and below spot. At $370 the required 5-year CAGR falls to roughly the demonstrated rate and the −1.47pp margin turns positive with no change to any assumption
Sizing input 71.4% realised vol — the lowest of the three names here Inverse-vol sizing therefore gives FN the largest weight of the three. That is the correct mechanical answer and it happens to agree with the ranking
Single-name cap 20% book Not approached at this evidence grade
Correlation constraint — binding FN, COHR, LITE, AAOI, CRDO and CIEN are six expressions of one driver And more specifically: NVIDIA is 27.6% of FN's revenue and, since 2026-03-02, the holder of $2.0bn of LITE convertible preferred. A book holding FN and LITE holds one counterparty twice in two capacities. Size the cluster, not the name

Why FN carries the largest position of the three despite the thinnest margin of safety. Its Valuation Criteria margin (−1.47pp) is worse than LITE's (+19.4pp) and better than COHR's (−11.2pp), but it has the highest evidence grade (A), the only State-A designation, the lowest volatility, the only named-customer disclosure with a matching receivables table, zero debt, and no dilution risk. Position size is a function of evidence and volatility, not of the point estimate — that is rule 5 of valuation.md applied rather than quoted.

Exit and invalidation

Thesis horizon: 12 months, to the Q4 FY2027 print, with the 5-year implied path as the ownership test rather than the trading horizon.

Trigger Level Action
Invalidation — the bear case confirms Datacom revenue declines YoY for two consecutive quarters while telecom grows Co-packaged optics is taking the assembly step. Exit
Invalidation — the margin ceiling closes Gross margin prints below ~11.5% for two consecutive quarters The 2.2pp gap between the 9.8% terminal margin and the 12.0% ceiling is gone. Exit
Invalidation — the growth argument fails FY2027 guide below ~+25% The PASS WITH ARGUMENT rests on +38%; below +25% the argument no longer bridges the −1.47pp gap. Exit
Invalidation — concentration turns into concealment FY2026 10-K shows any customer's receivable share above its revenue share by more than ~3pp This is the AAOI signature. FN is currently −2.1pp on NVIDIA and −4.5pp on Cisco; a sign flip is the single most important number in the filing. Re-underwrite before adding
Invalidation — a named customer disappears NVIDIA or Cisco drops below 10% in the 10-K note 45.8% of revenue in two names. Exit
Target $561 (+35.3%) Trim, do not exit
Valuation stop EV/gross profit above ~35x (currently 27.8x, EMS median 12.9x) The second instrument already says FN is at a 2.14x premium to its class
Drawdown ladder Per the book protocol; nothing name-specific overrides it

What would move this from PASS WITH ARGUMENT to a clean PASS

Named, so it is falsifiable:

  1. A quantified FY2027 revenue guide at or above +31%. That alone closes the gap arithmetically and converts the argument into an actual.
  2. Gross margin stabilising or expanding for two quarters. The declining gross margin is the single structural weakness; reversing it lifts the terminal margin above 9.8% and cuts the required growth directly — the highest-leverage possible change on this name.
  3. A named third ≥10% customer. Diversifying away from 45.8% in two counterparties reduces the risk that has to be priced, and FN is the one name here that would actually disclose it.