Twenty One Capital enters the week with a striking contradiction: short sellers have added aggressively to positions, yet the borrow market is running almost completely dry — a combination that makes the lending setup one of the tightest in the digital-asset holding space right now.
The short interest story is the headline. Estimated shares short jumped 35% over the past week, reaching roughly 7.1 million shares, and have climbed 50% over the past month. That is a sustained, deliberate build — not a one-day anomaly. What makes it more charged is where the borrow pool stands. Availability has collapsed to just under 1% — meaning barely one share remains available to borrow for every hundred already lent out. For most of the past month, availability has spent the majority of trading days below 5%, and touched an all-time tight of 0.14% on July 31. The 52-week peak availability was 100%, so the current regime is categorically different from earlier in the year. Borrowing costs, at 2.78%, have ticked up 13% on the week but remain moderate in absolute terms — the pool is almost empty, but those who got in early are not yet paying a punishing rate.
Options positioning tells the opposite story. The put/call ratio is running at 0.19, only modestly above its 20-day average of 0.16 and well below the 52-week high of 0.47. Call volume still dominates heavily. The ORTEX short score, at 62.9, stepped up sharply from the high-57s on August 10 — a jump of roughly five points in a single session that has held — signalling a genuine shift in the short-side conviction score rather than a brief spike. That divergence between a call-heavy options market and a rising short score is worth noting: equity options traders appear positioned for upside while the lending market tells a more bearish story.
The ownership structure adds important context. Tether Holdings and iFinex together hold roughly 62% of shares, and SoftBank controls a further 26%. That leaves a genuinely thin public float. When a concentrated structure like this meets a rising short interest figure, even a modest reduction in borrow availability can create disproportionate pressure on short sellers trying to maintain or exit positions. BlackRock and State Street have both added recently — 908,000 and 1.1 million shares respectively in their most recent reported periods — suggesting some conventional asset managers are building modest exposure even as shorts increase.
Insider activity is uniformly on the sell side. CEO Jack Mallers sold roughly 307,000 shares in late July for approximately $1.6 million combined. CFO Steven Meehan sold a smaller tranche around the same time. Neither transaction is enormous relative to the company's share count, and both carry the lowest significance score in the data, but the directional read is consistent: no insider buying has appeared in the trailing 90-day window. The net insider flow for the period is modestly positive in share terms only because of an April award grant — the cash transactions have all been sales.
The next formal earnings event is scheduled for November 11. The most recent prints have been modestly positive on the day — a 2.8% gain on August 11 and 6.3% on June 12 — though the five-day drift after June's print was flat, and May's result saw a 6.7% decline over the subsequent week. Peers traded mostly lower on the day: GLXY fell 6.6% on Tuesday, COIN dropped 2.9%, and BULL shed 2.8%, while BTGO and BRR outperformed. XXI's 7.6% weekly gain compares favorably to most of that cohort, though it pulled back 2.2% on the most recent session.
What to watch is whether the availability floor holds. With the borrow pool this depleted and short interest still rising on a monthly basis, any further demand for new short positions will either push borrowing costs meaningfully higher or prove impossible to fill — making the spread between options sentiment and the lending market the defining tension heading into autumn.
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