GCT Semiconductor heads into its May 12 earnings report with a classic tension: the stock is up 33% in a month, shorts haven't flinched, and the last time the company reported, the stock fell more than 10%.
Short sellers are not backing down despite the rally. SI % FF held at 6.4% of the free float as of May 7, having edged up 6.5% on the week even as the stock gained 6.9%. The ORTEX short score is running at 64.2 — elevated and only fractionally below last week's intra-week peak of 65.3 — which puts the stock in the top tier for short conviction within the universe. That's a meaningful signal: a 33% monthly move hasn't shaken out the bears. What it has done is make the position more expensive, with cost to borrow running at 10.1%. That's actually the lowest in more than a month — the rate has eased steadily from above 16% at the start of April — suggesting the borrow market is less stressed even as short positions rebuild. Availability is at roughly 71% of short interest, well within the tight-to-normal range, meaning there's still room for further short building if sentiment sours.
The stock's case rests primarily on a 5G chipset story. On May 7, the company signed a reference platform agreement with a satellite communications provider, supplementing a 5G/4G chipset licensing deal from January. HC Wainwright reiterated its Buy rating and $3.00 target on March 30 — giving a current upside of roughly 76% from the $1.70 close. B. Riley Securities, which initiated at $8.00 in August 2024, has progressively cut its target to $4.00 as of November 2025, reflecting persistent pressure on the growth timeline. Both houses remain constructive, but the direction of travel in target prices has been downward over the past year. Valuation multiples are negative across the board — this is a pre-profit name — and earnings momentum scores rank in the bottom decile of the universe, at 3 on the 90-day EPS momentum measure.
The earnings history sharpens the picture. The last print, on March 25, sent the stock down 10.9% in a single session and down 12.4% by the end of the week. The setup into May 12 is different in one important way: the stock has already rallied hard into the event. The satellite comms partnership announcement on May 7 appears to have catalysed this week's 13% single-day move, pulling some of the positive news forward. Whether that raises or lowers the bar for a positive reaction on earnings day is the central question short sellers appear to be betting on.
Institutional ownership is thin. Anapass, Inc. holds 11% of shares and SUNP Corporation holds another 5.5% — both long-term anchor holders with no reported recent change. Vanguard added 422,000 shares by end of March. GM Advisory Group, a smaller active manager, added 271,000 shares in Q1. Combined, these flows suggest some incremental institutional interest, but the base remains narrow and the free float is modest enough that positioning can shift quickly.
The May 12 print is therefore less about whether the 5G chipset pipeline is intact and more about whether commercial shipment volumes and the satellite licensing agreement translate into numbers that justify a stock now trading 33% higher than it was a month ago — with a short base that has rebuilt through the rally.
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