INSM cost to borrow surges to 0.49%, up 210% over the past week as short sellers rebuild ahead of October 29 earnings.
Key data as of 7 Nov 2026
INSM cost to borrow surges to 0.49%, up 210% over the past week as short sellers rebuild ahead of October 29 earnings.
INSM short interest jumps 27% in one week to 6.46% of float, highest since August, as Wolfe downgrades.
2 Short Interest updates in 30 days
INSM short interest surges 26% in one week to 6.46% of float; Wolfe downgrades to Peer Perform from Outperform.
Wolfe Research downgraded INSM to Peer Perform from Outperform on Monday morning. The move came on the same day short interest jumped 26.5% in a single session to 6.46% of free float. Yet the options market told a…
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