ASX arrives at Thursday's earnings report having shed 5% in a single session and nearly 6.5% on the week — a sharp reversal after a month that had seen the stock gain more than 6%.
The most striking development since the last ORTEX preview is a sudden surge in short interest. Borrowed shares jumped 76% in a single day on July 10, rising from roughly 10.4 million to 18.3 million — the sharpest one-session move in the 30-day window. That is a genuine change from the picture painted a week ago, when short interest had stabilised and the borrow market was loosening. The move has pushed the ORTEX short score up to 44.4, its highest reading of the past two weeks, though still far from extreme territory in absolute terms. Crucially, the borrow market has not tightened to match the new short demand: availability remains at 139%, well within normal range and far above the 52-week low of 79% hit on June 1. Cost to borrow has actually eased sharply, dropping from a brief spike near 7.5% on July 6 back down to 0.64% — suggesting the new short positions were established at comfortable borrow cost rather than in a scramble for scarce supply.
Options positioning adds to the cautious tone without reaching alarm levels. The put/call ratio has climbed to 0.29, roughly 1.7 standard deviations above its 20-day average of 0.21 — the most defensive reading of the past year, and a continuation of the trend flagged in the previous article when the PCR was still at 0.25. Calls still dominate the options book by a wide margin in absolute terms, but the direction has been consistently toward more protection through June and into July.
The bull case heading into the print rests on solid fundamental momentum. EPS momentum ranks in the 88th percentile on a 30-day basis, and the stock has beaten estimates consistently enough to rank in the 68th percentile on EPS surprise. Advanced packaging demand tied to AI infrastructure buildout has been the core narrative, with the company's recent notes pointing to accelerating customer orders and margin expansion. The last two earnings prints delivered meaningful upside: the April 2026 result produced a 4.4% gain on the day and extended to a 13.6% rally over the following five days, while the February 2026 print drove a 10% single-day move and a 23.5% five-day gain. Bears, by contrast, are pointing to the stock's 27% rally since June as a reason to reduce exposure into an uncertain macro backdrop for Taiwan-exposed semiconductors — the recent selloff suggesting some of that trade is already being unwound.
Analyst data is too stale to be actionable here: the most recent analyst notes on record date to 2024 at the earliest, and the mean price target in the system reflects coverage from 2023, making it incompatible with a $40-plus ADR price today.
What Thursday's print will test is whether ASE's advanced packaging revenue growth and margin delivery can justify holding the stock after a sharp run-up — or whether the sudden build in short interest in the final days before the report was a tell worth heeding.
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