IBIT is caught in a telling split: the price is grinding higher while short sellers quietly double their exposure.
The most striking development this week is the pace of short-side accumulation. Short interest has nearly doubled in a month — up 97% over 30 days to 3.25% of the free float, with the latest daily reading adding another 9% in a single session. That is not a small move for an ETF that spent most of the spring below 2% shorted. The absolute short position now stands at roughly 44.5 million shares, the highest level in the trailing 30-day window. Yet the borrow market tells a very different story about the tension behind that build. Availability is extraordinarily loose at 747% — meaning the lending pool holds nearly eight shares available for every one already borrowed — and the cost to borrow remains modest at just under 1.5%, despite rising around 9% on the week and 46% over the past month. There is no squeeze pressure here. Shorts are building into a liquid, cheap, and open borrow market, which makes this look more like a deliberate directional bet than opportunistic hedging.
Options positioning adds a twist. Buyers have turned more bullish than at almost any point in the past year. The put/call ratio has dropped to 0.696, more than one standard deviation below its 20-day mean of 0.75, and sits well clear of the late-June peak of 0.83. In practical terms, calls are now running well ahead of puts — a configuration that has persisted all week and looks increasingly deliberate rather than coincidental. Six weeks ago, when the PCR was at 0.83, IBIT was trading at a lower price and the tone in options was clearly more defensive. The reversal since then is sharp.
The ORTEX short score has crept up alongside the short interest build, moving from around 29 in early July to 37 today — its highest reading of the past two weeks. That is still in the moderate range, not an extreme, but the trajectory matters. A score that was flat for weeks and has now started climbing in tandem with a doubling of short shares suggests the positioning shift is systematic rather than noise.
What makes this week's setup genuinely interesting is the divergence of signals. Short sellers are adding exposure at the fastest pace in months. Options traders are buying calls at a 52-week-low-approaching level of put hedging. The price itself is up 3% on the week and nearly 6% over the past month, closing at $37.67. These three facts do not point in the same direction. Either the short build is a hedge against something — futures positioning, an options book, a basket trade — or it represents a directional view on Bitcoin that the options market is emphatically not sharing. The next meaningful data point is whether short interest continues to climb above 3.5% of float or reverts, which would clarify whether this is conviction or a temporary tactical position unwinding.
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