Coherent (COHR) beat Wall Street on both lines when it reported fiscal Q4 2026 results Wednesday, August 12, after the close. The stock rallied more than 8% in the regular session that day on anticipation, then gave almost all of it back in after-hours trading once the numbers were actually digested. By the next morning the stock was sitting barely above where it started, a reminder that an options-implied move tells you how far a stock is likely to travel, not which direction it lands or how bumpy the ride gets along the way.
Key Takeaways
- Coherent beat on both revenue ($2.05 billion vs. a roughly $2.0 billion consensus) and non-GAAP EPS ($1.74 vs. roughly $1.62-$1.65 estimated), per the company’s own August 12 earnings release.
- The stock rallied over 8% intraday on August 12, then reversed sharply after hours, falling back to roughly flat versus the prior close, a net move well under the options market’s roughly 9% pre-earnings implied move.
- Datacenter and Communications, Coherent’s AI-optics segment, made up about 79% of Q4 revenue ($1.615 billion of $2.05 billion total) and remains the growth engine.
- Gross margin guidance for the next quarter improved only modestly (about 30 basis points at the midpoint), which is the likely reason the market treated a clean beat as a disappointment.
- This is a “beat and fall” print: the fundamentals were strong, but the stock had already priced in a lot of good news before the report.
What Coherent actually reported
For the quarter ended June 30, 2026, Coherent posted revenue of $2.05 billion, up 33.8% year over year and 13.3% sequentially, per the company’s own investor-relations release. Non-GAAP diluted EPS came in at $1.74, ahead of a consensus estimate in the $1.62 to $1.65 range. GAAP diluted EPS was $1.19. Both gross-margin lines improved meaningfully year over year: GAAP gross margin reached 38.5% (up about 277 basis points from a year earlier) and non-GAAP gross margin hit 40.2% (up about 215 basis points).
For the full fiscal year, revenue climbed to $7.12 billion, up 22.5% from $5.81 billion in fiscal 2025. GAAP diluted EPS swung from a $(0.52) loss a year ago to $4.12, and non-GAAP diluted EPS came in at $5.61. That is a genuine turnaround story on the underlying numbers, not a marginal improvement.
The segment that matters: Datacenter and Communications
Coherent’s business has structurally shifted toward AI infrastructure. The Datacenter and Communications segment, which covers the optical transceivers and networking components that move data between AI servers, generated $1.615 billion of the quarter’s $2.05 billion in total revenue, roughly 79% of the company. Full-year segment revenue reached $5.275 billion, up from $3.755 billion in fiscal 2025. The Industrial segment, by contrast, generated $430.5 million in the quarter and $1.844 billion for the year, down from $2.055 billion a year earlier. Coherent is, at this point, functionally an AI-datacenter optics company with a shrinking industrial business attached to it, and the market is pricing it accordingly.
Why the stock fell on a clean beat
This is the part that trips people up: Coherent beat on revenue, beat on EPS, and grew its highest-margin segment by a wide margin, and the stock still ended up roughly flat to slightly negative once the after-hours dust settled. The company’s guidance for fiscal Q1 2027 called for revenue of $2.2 to $2.4 billion and non-GAAP EPS of $1.85 to $2.05, both implying continued double-digit sequential growth. But non-GAAP gross margin guidance of 39.5% to 41.5% represented only a modest step up from the quarter just reported, even as the company said internal indium-phosphide capacity (a key input for its optical components) should roughly double by year-end.
Put together, that reads as: revenue is scaling fast, but the capacity spending required to keep scaling it is still heavy, and margin expansion is not accelerating as quickly as the growth rate is. For a stock that had already re-rated sharply higher on the AI-optics narrative in the weeks before the print, “still growing, margins improving slowly” was not enough to justify paying up further. That is a classic setup-versus-delivery problem, not a business problem, and it is worth distinguishing the two when you read the headline “stock falls despite beat.”
What the options market got right (and wrong)
Heading into the print, the options market was pricing an implied move of roughly 9% for COHR, based on at-the-money straddle pricing in the days before the report. On the day itself, the stock rallied more than 8% during the regular session, then reversed by more than 7% in after-hours trading once the market digested the margin-guidance detail, landing close to flat versus the prior close by the next session.
That is a useful case study in what an expected move actually measures. A roughly 9% implied move does not mean “the stock will end the day 9% higher or lower.” It means the options market thinks a move of that magnitude, in either direction, is a reasonable one-standard-deviation range. Coherent’s session technically delivered two separate moves close to that magnitude, first up, then down, that mostly canceled each other out by the time the after-hours session settled. A trader looking only at the closing price change the next morning would have concluded the options market overpriced the risk. A trader who watched the intraday tape would have seen the opposite: realized volatility was arguably in line with, or above, what was priced in. The lesson is that expected move describes the probable size of a swing, not its direction or its path, and “the stock didn’t move much” and “the stock was calm” are not the same statement.
This also sits in contrast with Coherent’s own recent earnings history. In several of the last eight quarters, the stock’s actual post-earnings move has exceeded its implied move rather than undershooting it, including an August 2025 print where the stock moved roughly 13% against a 9.9% implied move. This quarter flips that pattern: the round-trip volatility was there, but the net directional outcome ended up smaller than what was priced in. Neither pattern is more “normal” than the other for this name, which is itself a reason position sizing around COHR earnings should assume real tail risk in both directions rather than anchoring to any single prior quarter.
A hypothetical illustration
Consider a hypothetical trader who, on the morning of the print, bought an at-the-money straddle priced near that 9% implied move, intending to profit from a large move in either direction. If that trader held the position through the entire regular session’s 8%-plus rally without adjusting, then continued holding into the after-hours reversal, the position would have traveled through a wide price range intraday only to land close to breakeven (before accounting for the bid-ask spread and time decay lost while holding two legs) once the after-hours move reversed the rally. That is not a reason to avoid buying volatility into earnings. It is a reason to have a plan for managing a straddle intraday rather than assuming you can simply buy it and check back the next morning, since the same “large realized move” that makes buying premium attractive can fully round-trip before you get a chance to act on it. This is illustrative only, not a trade recommendation, and actual outcomes depend on strike selection, expiration, and entry timing that will differ from one trader’s setup to the next.
Options cost matters more when the net move is small
When a stock’s net move ends up small relative to what was priced in, as happened here, transaction costs eat a larger share of any strategy built around the print. That makes per-contract commissions worth checking before you structure a multi-leg earnings trade, especially on a two-legged position like a straddle where you are paying to open and, eventually, to close both sides.
| Broker | Options cost per contract | Notes |
|---|---|---|
| Charles Schwab (thinkorswim) | $0.65 open, $0.65 close | Verified 2026-08-06. No account minimum. |
| Interactive Brokers (IBKR Pro) | $0.65 open, $0.65 close | Verified 2026-08-06. Falls to $0.15 above 100,000 contracts/month. |
| tastytrade | $1.00 open, $0 close | Verified 2026-08-06. Capped at $10 per leg. |
| Webull | $0 open, $0 close | Verified 2026-08-06. $0.50/contract on index options only (not applicable to a single-stock name like COHR). |
For a name where the realized round-trip can end up netting close to breakeven, as it did here, a $0-per-contract structure like Webull removes one more variable from the equation when you are testing a multi-leg earnings strategy on paper before committing size to it.
Bottom Line
Coherent’s Q4 FY2026 results were genuinely strong: a real beat on revenue and EPS, and continued growth in its highest-margin AI-optics segment. The stock’s after-hours reversal wasn’t a verdict on the business, it was a verdict on how much good news was already priced in before the report. For options traders, the bigger takeaway is that a roughly 9% implied move accurately captured how much this stock could swing in a single session, even though the closing price the next morning barely moved at all.
FAQ
Q: When did Coherent report Q4 fiscal 2026 earnings?
A: Wednesday, August 12, 2026, after market close, for the quarter ended June 30, 2026.
Q: Did Coherent beat or miss earnings estimates?
A: It beat on both lines: revenue of $2.05 billion versus a roughly $2.0 billion consensus, and non-GAAP EPS of $1.74 versus a roughly $1.62 to $1.65 estimate.
Q: Why did COHR stock fall after beating earnings?
A: The stock had already rallied sharply in the weeks before the print on AI-optics optimism. Next-quarter gross margin guidance improved only modestly even as the company flagged continued heavy capacity spending, which read as a disappointment relative to the elevated expectations already baked into the share price.
Q: What was the options market pricing in before the report?
A: Roughly a 9% implied move based on at-the-money straddle pricing in the days before earnings, a figure that turned out to reasonably capture the size of the intraday swings even though the net move by the next session was much smaller.
Q: Is Coherent’s AI-datacenter growth story still intact after this print?
A: The underlying numbers say yes. Datacenter and Communications made up about 79% of Q4 revenue and full-year segment revenue grew about 40% year over year, with guidance still calling for double-digit sequential growth into the next quarter. The market’s concern was pace of margin expansion, not the growth trend itself.
Want the mechanics behind how an expected move gets calculated in the first place? See our strategy guides hub for a full walkthrough of pricing options around an earnings print.