BTC — the Grayscale Bitcoin Mini Trust — has extended its decline, dropping another 7.7% on the week to $27.44, bringing the one-month loss to nearly 23%.
The week's most notable development is a sharp rebuild in short positioning. Short interest has nearly tripled in a week, rising 185% to roughly 659,000 shares borrowed. That is the highest level in the 30-day lookback and marks a meaningful acceleration from the 323,000 shares flagged in the June 3 note. Even so, the absolute level remains modest — at just 0.60% of the free float, this is still a low-conviction short by any structural measure. The lending pool is also far from strained: availability, while tighter than it was a week ago (down from above 9,999% to roughly 2,050%), remains extraordinarily loose. With more than 9.2 million shares still available to borrow, the borrow market is not placing any pressure on shorts. Cost to borrow has drifted up about 16% on the week to 0.90% — cheap, and well inside the 52-week high.
Options positioning has remained cautious through the price slide. The put/call ratio is running at 0.34, slightly above its 20-day average of 0.31. The z-score is just below 0.9 — elevated relative to the April baseline (when the PCR was consistently below 0.25) but not extreme. The prior note described this as a structural shift rather than a one-session hedge; that characterisation still applies. The PCR has now held in the 0.30–0.38 range for two weeks. Investors are maintaining protective hedges, not adding aggressively, which fits a market that has already seen a sharp sell-off.
The ORTEX short score has moved higher this week, climbing to 30.5 from 25.3 a week ago. That is the highest reading in the 10-day lookback and reflects the surge in short shares borrowed. A score in the low 30s still sits in a moderate range, but the direction — up nearly 20% in five sessions — is worth watching. No analyst or valuation data is available for this vehicle, which as a trust product trades primarily as a passive proxy for bitcoin price action rather than on fundamental merit.
The setup to watch now is whether the short rebuild continues alongside a further drop in availability. At current pace, availability is tightening meaningfully — from effectively unlimited a week ago to roughly 20 times the short interest today — and any sustained acceleration in borrowing demand would eventually start to show up in borrow costs and available supply.
See the live data behind this article on ORTEX.
Open BTC on ORTEX →ORTEX Market Intelligence content is generated by AI from a snapshot of ORTEX's proprietary data. Content is informational only and does not constitute investment advice.
