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iShares Trust - iShares S&P 100 ETF (OEF) short interest & options flow

ARCA

Latest pulse2 Sept 2026

OEF short interest surges 59% in one week to 0.17% of float, though absolute levels remain minimal for the broad large-cap ETF.

$382.97+0.13% 1d-1.46% 1w+0.77% 1mClose: 20 Oct 2026

Short interest % of float: Low and dropping
Cost to borrow: Low
Availability: Rising

Market cap: $20.50B

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Key data as of 21 Oct 2026

ORTEX chart of iShares Trust - iShares S&P 100 ETF (OEF) share price and short interest (% of free float), six months to October 20, 2026

Latest signals on OEF

Short Interest2 Sept 2026
OEF short interest surges 59% in one week to 0.17% of float, though absolute levels remain minimal for the broad large-cap ETF.

OEF news and analysis

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