BTC Trust Shorts Retreat as Options Lean Bullish

BTC, the Grayscale Bitcoin Mini Trust, has reversed course sharply since the October 21 note flagged a near-doubling of short interest: positions have unwound just as quickly as they built, leaving the lending market even looser than before.

The short-covering story is the week's standout. Shares short fell 13% over the past seven days to roughly 622,000, erasing much of the accumulation that made last week's note newsworthy. At 0.57% of the free float, short interest is back near its mid-October floor and well below the 0.73% peak reached on October 20. The unwind has been orderly: positions dropped on four of the past five sessions. The borrow market offers no friction to either side. Cost to borrow has halved from the roughly 0.90% range that prevailed through mid-October to 0.55%, its lowest level in six weeks. Availability is effectively uncapped, with more than 51 million shares available to lend and a ratio so far above borrowed positions that the data caps it at 9,999%. There is nothing in the lending market to accelerate the unwind or punish remaining shorts.

Options positioning reinforces the bullish lean. The put/call ratio has dropped to 0.25, close to its 52-week low of 0.23 and nearly a full standard deviation below its 20-day average of 0.27. Traders are buying roughly four calls for every put, the most call-heavy configuration of the past year. That tilt has been consistent and stable across the past two weeks, rather than a single-day spike, suggesting a steady preference for upside exposure rather than a reactive hedge.

The ORTEX short score, at 26, has eased from the 27 to 28 range that prevailed during the peak short-building phase earlier in October. The score remains low in absolute terms, consistent with the view that this is a lightly contested name with no structural bear case. The trust's market cap of roughly $5.1 billion reflects its role as a low-cost vehicle for Bitcoin exposure, and with no earnings catalyst, no analyst coverage, and no fundamental valuation multiples to anchor a debate, the price action is simply a function of Bitcoin itself. The trust closed at $35.66 on October 27, down about 2.2% on the week and 4% on the month, tracking Bitcoin's own soft patch.

What to watch next: whether the call-heavy options posture and the short-covering trend persist if Bitcoin continues to drift lower, or whether a price recovery draws fresh short interest back toward the October highs.