USMC Borrow Squeeze Fades as Short Sellers Step Back

The story for USMC, the Principal U.S. Mega-Cap ETF, is one of a lending market that swung dramatically tighter through October and has now meaningfully eased, against a backdrop of modest and retreating short interest.

The borrow conditions are the most interesting thing in this snapshot. Availability has jumped to nearly 494%, meaning there are roughly five shares available to borrow for every one already on loan. That is a sharp reversal from the extreme tightness seen in mid-October, when availability collapsed to below 18% and the lending pool was essentially fully occupied. Cost to borrow has followed the same path down, dropping to 3.88% from a peak of nearly 16% in late September. That September spike stands out clearly in the history: for most of the past six weeks, borrowing USMC has carried a cost well above its current level, suggesting a sustained period of elevated short demand that is now unwinding. The ORTEX short score has drifted lower too, edging from 47.4 on October 27 to 45.4 today, consistent with reducing short-side pressure.

Short interest itself is too small to anchor a bearish thesis. It sits at roughly 0.04% of the free float, and has fallen nearly 47% over the past month. That is not a crowded short by any measure. The sharp drop in borrow activity is therefore less a story about short covering pressure and more a reflection of a brief, tactical hedge trade in an ETF that tracks the country's largest companies. Options are equally uninformative: the put/call ratio has sat at zero across every session in the 30-day history, with the 52-week high barely clearing 0.14. There is simply no measurable put demand here.

The ETF itself has drifted lower, closing at $74.61 and down 2.5% on the week and 3.5% over the past month. For a passively managed vehicle holding mega-cap US equities, that move closely mirrors the broader large-cap market's recent softness. Quarterly dividends have been running at roughly $0.13 to $0.15 per unit over the past three distributions, a gently declining series that reflects the underlying portfolio's yield rather than any company-specific dynamic.

What to watch next is whether availability stays loose as the month progresses, or whether a fresh round of tactical hedging through the ETF pushes borrow demand back toward the kind of tightness seen in mid-October.