Coherent's Rally Is Really About Optical Supply

Coherent reported record Q2 revenue of $1.69 billion, up 7% sequentially and 17% year-over-year, driven by demand for 800G and 1.6T data-center optics. Datacenter & Communications now comprise over 70% of revenue (up 11% sequentially) with data-center revenue +14% sequentially; non-GAAP gross margin expanded to 39% and operating margin reached 19.9%, aided by yield improvements, pricing optimization and early benefits from six-inch indium phosphide manufacturing.

Analysis

The shift to wafer-scale indium phosphide capacity is a structural moat rather than a one-off margin pop: once yields stabilize on larger wafers, per-unit cost declines compound every percentage point of yield improvement and raise the fixed-cost barrier for smaller competitors. That favors vertically integrated fabs and suppliers of III‑V process equipment while exerting downward pressure on standalone module assemblers who can't match wafer economics, likely accelerating supplier consolidation over 6–18 months.

A concentrated raw-material pathway (indium and specialized epitaxy supplies) creates a two-way lever: price shocks or export restrictions can quickly erode the manufacturing advantage, but supplier lead times for six‑inch toolsets mean competitor catch‑up will be measured in quarters not weeks. Expect downstream customers (hyperscaler switch and optical subsystem buyers) to exploit improved cost curves by extracting ASP concessions, tightening gross margin capture for companies that lack process scale.

Near‑term catalysts that sustain outperformance are operational (sustained yield progression, visible multi‑quarter bookings from hyperscalers) while the primary long‑term threat is architectural substitution: successful silicon‑photonics co‑packaged optics pilots at scale would shorten the runway to margin mean reversion. Time horizons: earnings/booking commentary matters over days–weeks, capacity cadence and raw‑material dynamics over months, and architectural displacement over multiple years.

Contrarian angle: the market may be under‑estimating how durable margin expansion can be once wafer economics kick in — this is a capital‑intensive barrier that compounds returns if material access stays stable. That said, the position is asymmetric: attractive upside if scale persists, but binary downside if raw‑material access or a large hyperscaler pivots to alternate optics in a 12–36 month window.

Key Decisions for Investors

• Long COHR via a 12‑month call spread: buy a near‑ATM Jan‑2027 call and sell a 30–40% OTM Jan‑2027 call, sizing 2% of NAV. R/R: target 30–50% equity upside if yield and booking cadence hold; max loss = premium paid. Entry: within 2 weeks while post‑earnings sentiment is supportive.
• Paired trade (relative value): long COHR (1.5% NAV) / short LITE (1.0% NAV) over 6–12 months to capture manufacturing moat vs. legacy/telecom exposure. R/R: target 20–30% relative outperformance; close if relative tightness reverses by >15% in 3 months or if COHR issues guidance deterioration.
• Tail protection: buy 18‑month OTM puts on COHR sized 0.5% NAV (30–40% OTM) to guard against a hyperscaler capex shock or sudden indium supply disruption. Treat as insurance: acceptable drag on returns for protection against a binary downside event.
• Event triggers / monitoring: set alerts for (1) any hyperscaler capex guidance cuts, (2) >20–25% move in indium spot or supply commentary within 30 days, and (3) public pilot wins for silicon‑photonics CPO at hyperscalers. If any trigger hits, reduce long exposure by 30–50% and re‑assess within 2–6 weeks.