Iron Mountain enters its November 5 earnings date with options traders holding a more defensive position than they have for most of the past year, even as the stock has added 6% over the past week to close at $116.55. The put/call ratio is running at 1.80, above its 20-day average of 1.51 and more than one standard deviation above that mean. That is a shift in tone from the note…
IRM short interest jumped 22.4% over one week to 2.75% of free float, driven by a 1.3% daily spike on Sept. 28. Short sellers face virtually no friction: cost to borrow sits at 0.49%, while availability exceeds 6,500% of short interest—meaning roughly 218 million shares remain available to lend against 8.1 million borrowed. The build reflects conviction rather than scarcity.
Key data as of 5 Nov 2026
Why this matters: Iron Mountain is sending mixed signals. Short sellers added positions at the fastest pace in months last week. At the same time, options traders are the most bullish they've been in three months. The…
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