PSI, the Invesco Semiconductors ETF, has reversed course sharply on both price and positioning — the fund is up nearly 10% on the week, but short sellers have returned at a pace that stands out even against a backdrop of sector strength.
The story here is a dramatic reversal from where things stood just one week ago. The June 10 note described short interest collapsing toward 108,000 shares, with bears in full retreat. That picture has flipped. Shorts have nearly doubled since then — borrowed shares climbed from around 108,000 to over 260,000, an 87% jump week-on-week, pushing the short interest percentage of free float from under 0.9% to 2.1%. Availability has tightened sharply in response. It was above 1,490% as recently as June 9, reflecting an almost entirely empty borrow book. By June 16, it had compressed to 215% — still in the normal range and not signalling any squeeze pressure, but the direction of travel is unmistakable. The 52-week tightest point was 27%, so there is plenty of room to tighten further. Cost to borrow, at 2.94%, remains modest — it has actually drifted slightly lower over the week even as shorts rebuilt, which tells you the new demand is being met without friction.
Options positioning tells a bullish lean that contrasts with the short rebuild. The put/call ratio has dropped to 0.33, below its 20-day average of 0.39 and running near the lower end of the past year's range — the 52-week low is 0.21. That puts the z-score at roughly -1.3, meaning call demand is running well above its recent norm relative to puts. Investors in the options market are not hedging this rally; they appear to be chasing it. The gap between what options traders and short sellers are doing is the week's most interesting tension. Bears are rebuilding borrow positions even as the fund hits new recent highs; options buyers are leaning the other way.
The ORTEX short score has climbed steadily to 43.6, up from 31.2 just a week ago. That reflects the pickup in short activity and the tightening availability, but the score remains comfortably in neutral territory — well below the elevated readings that would suggest meaningful squeeze risk or crowded short positioning. The score's direction of travel is what matters most here: it has moved up every single session since June 9, which marks a clean break from the unwinding trend described in the prior note.
The semiconductor ETF's own price history adds context. PSI is up 12% over the past month and closed at $166.74 on June 16, though it gave back 5% on the day — a sharp single-session reversal after the week's strong run. That kind of intraday swing, following a big weekly gain, is worth watching alongside the renewed short interest build. Whether the new shorts are fading the rally or hedging broader semiconductor exposure remains the open question — and whether borrow availability continues tightening from here will be the clearest signal of their conviction.
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