FXI — the iShares China Large-Cap ETF — enters the back half of August with a striking divergence: short interest has surged to multi-month highs while the borrow market has simultaneously loosened to its most comfortable level in weeks, a combination that rarely points in the same direction.
The short side of this trade is the dominant story. Short interest has climbed 42.2% of free float, up more than 21% in a month and nearly 5.3% on the week alone, reaching approximately 70.4 million shares. That is a significant rebuilding of bearish positioning against Chinese large-caps, and the ORTEX short score of 69.4 — running in a tight band between 68 and 70 for the past two weeks — confirms the pressure is sustained, not a one-session blip. Days to cover from the most recent FINRA filing sit at 3.25 days, meaning any sharp reversal would take shorts meaningful time to unwind.
The borrow picture tells a more nuanced story. Availability has swung dramatically over the past month — in late July and into early August, the lending pool was almost completely exhausted, with availability collapsing as low as 0.26% on July 20, the tightest point of the year. That squeeze has since eased considerably. Availability recovered sharply after August 7, climbing back to 78.6% by August 18 — a genuine loosening, not a marginal move. Cost to borrow, running near 1.96%, has drifted in a 1.3%–2.4% band over the past six weeks without any decisive directional move. The loosening availability means new short positions are cheaper and easier to establish today than they were three weeks ago, which likely explains why short interest is still rising even as the acute squeeze conditions have faded.
Options positioning is calm relative to the intensity of the short-side rebuild. The put/call ratio is 0.83, barely above its 20-day average of 0.83 and only 0.33 standard deviations above the mean — well within normal territory. The 52-week range runs from 0.72 to 1.23, putting the current reading in the lower half of that band. Options traders are not signalling alarm; the defensive hedge demand that might accompany an aggressive short campaign simply isn't showing up in the derivatives market. That divergence — heavy shorting without elevated put demand — suggests the short positioning is more a macro expression on Chinese equities than a conviction trade hedged through options.
Institutional positioning adds texture. Morgan Stanley is the largest holder with 8.7% of shares, but trimmed by more than 9 million shares as of the June quarter-end. Citigroup also reduced by 1.2 million shares. JPMorgan, by contrast, added 1.4 million shares over the same period. Brevan Howard entered a fresh position of 6 million shares as of March. Analyst data is effectively absent — the sole price target on record is dated 2008 and carries no relevance to current conditions.
The data point worth watching most closely is the availability trajectory. A return toward the sub-5% readings seen in late July would signal renewed squeeze pressure on an already heavily shorted ETF. The short score has been remarkably stable for two weeks; any break higher, combined with a renewed tightening of available shares, would sharpen the tension between what shorts are betting and what the borrow market can support.
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