Covering Drives Standouts Among Most Shorted: Of the 100 most shorted stocks in the Russell 1000 (by percent of float) at the start of June, the 44 where short interest declined returned an average of 7%, compared to just 0.8% for the 56 where it increased.

Covering Behind the Rally: Among the 100 best-performing stocks, those with the steepest short interest declines — including MU, ALGM, W, and COF — posted standout returns, outperforming top names with additional MTD shorting. COF’s covering reflected a merger arb unwind. The 100 stocks with the most short covering returned 3.8%, versus 2.4% for the 100 with the largest short interest increases.

Squeeze Risk Identified in Advance: The market is responding to real-time squeeze risk. Stocks flagged by S3 with the highest Squeeze Risk at the start of June saw short interest rise just 0.8% on average, compared to 5% for the lowest-risk names. The flagged highest squeeze risk names returned 6% MTD, outperforming the index.

Shorts Pile into Worst Performers: The 100 worst-performing stocks saw short interest rise an average of 4.2% through June 27, compared to 2.8% for the top performers and 2.2% for the average index constituent. Managers appear increasingly willing to press shorts in already weakened names.

Narrow Leadership, Risk-Off Underneath: Active investors are moving into bigger, more liquid stocks and steering clear of smaller, less liquid names, which have lagged. On the short side, returns are being driven by positioning in already crowded trades: names with short covering are outperforming those where short interest continues to build. It's a shift you can only see in real time.

Real-Time Risk Tracking: S3’s short interest, squeeze risk, and crowding scores make it possible to monitor these positioning shifts as they happen—offering visibility well ahead of regulatory disclosures. Short interest in Russell 1000 constituents is rising, but the targets are shifting and covering is driving segments of outperformance.

Want to know more? Access this data in real time using S3’s BLACK APP

The information herein (some of which has been obtained from third party sources without verification) is believed by S3 Partners, LLC (“S3 Partners”) to be reliable and accurate. Neither S3 Partners nor any of its affiliates makes any representation as to the accuracy or completeness of the information herein or accepts liability arising from its use. Prior to making any decisions based on the information herein, you should determine, without reliance upon S3 Partners, the economic risks, and merits, as well as the legal, tax, accounting, and investment consequences, of such decisions.