MRNA has pulled back 11% over the past month among its closest biotech peers on short positioning, while the stock itself climbed 11% over the past week. Closest peer BNTX was flat on the week, NVAX gained roughly 4%, and ARCT added 12%. Moderna's short interest, at 8.4% of free float, sits meaningfully above all of them, but the direction…
MRNA short interest climbed 23% over the past week to 9.05% of float, driven by heavy accumulation since early October. Availability remains abundant at 478%, signaling easy shorting conditions despite the rally.
Key data as of 4 Nov 2026
MRNA short interest climbed 23% over the past week to 9.05% of float, driven by heavy accumulation since early October. Availability remains abundant at 478%, signaling easy shorting conditions despite the rally.
6 Short Interest updates in 30 days
A Citigroup downgrade to Sell lands just as short sellers accelerate their exit from MRNA, creating an unusual split signal: one major bank is turning bearish on a stock that the shorts who know it best are quietly…
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