Coherent Corp. heads into its August 12 earnings report with the stock up 33% on the week — and short sellers sitting on growing paper losses.
The most striking feature of the week is the divergence between price action and short positioning. Shorts have not retreated: short interest climbed 7.4% in a single week to 6.0% of free float, with the move concentrated in Tuesday's session when an additional 660,000 shares were added to the short book. That makes this week's rally look like a forced-covering setup in reverse — bears adding into strength rather than capitulating. The cost to borrow has risen 55% over the past week to 0.45%, a sign that new shorts are paying up to establish positions. Yet borrow availability remains extremely loose at nearly 1,906% of short interest, meaning there are roughly 19 shares available for every one currently lent out. The lending market is under no stress, and there is no mechanical squeeze pressure.
Options tell a similarly cautious story. The put/call ratio has edged to 1.25, running slightly above its 20-day average of 1.22 — not an extreme reading, but notable given the 33% weekly gain. The PCR has been persistently elevated since mid-July, well above the 1.10–1.18 range that prevailed through the first half of July, suggesting options traders moved defensively early and have not yet rotated back into calls even as the stock ripped higher. The 52-week high on the PCR is 1.35, so the market is not at peak defensiveness, but hedging demand has quietly been a feature of this name for several weeks.
The Street remains firmly in the bull camp, though the most recent target revisions are a few months old. Raymond James raised its target to $435 in early July, reinforcing its Strong Buy. Citigroup moved to $420 back in April. Morgan Stanley, the notable holdout, carries an Equal-Weight with a $290 target — well below the current $323.73 close. The consensus mean target sits at roughly $395, implying modest upside from here after the week's rally compressed the gap considerably. The bull case rests on AI-driven transceiver demand in data centers and Communications growth. Bears point to co-packaged optics uncertainty, Chinese military exposure risks, and the macro and tariff overhang. EPS momentum is exceptional — ranking in the 98th percentile on a 30-day basis and 95th on a 90-day basis — though the 12-month forward earnings growth score languishes at just 13, suggesting upgrades have already been priced in. The PE multiple has compressed 8.3 points over the past 30 days to 23.5x, partly absorbing the stock's recent recovery from its late-June pullback.
Insider activity leans negative. CEO Jim Anderson sold just over 25,800 shares at $426.89 on June 3, realising more than $11 million. CFO Sherri Luther sold 1,000 shares at $306.68 as recently as July 22. Net insider activity over 90 days amounts to a net sell of roughly $13.7 million in value. None of these trades appear distress signals — most are likely scheduled programmes — but the cluster of selling at prices above the current $323.73 level is worth flagging ahead of a major catalyst. Peers also had a strong week: FN rose 16.5% on the day and 18.1% on the week, while GLW gained 26.9% on the week and TTMI added 22.2%, suggesting a broad sector re-rating rather than a COHR-specific move.
The August 12 print is the next hard date: the last earnings saw the stock fall 4.9% on the day before recovering 20% over the following five days, so the market's pattern has been to sell the number and buy the trend — the question heading into this report is whether a 33% pre-earnings run changes that calculus.
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