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Contract OI history

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Jan 15, 2027 EXPIRATION

IBKR $72.50 Put

IBKR270115P00072500

Latest saved OI1,012Oct 23, 2026
Last change+73vs previous saved observation
Saved market days7Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
IBKR $72.50 put open interest history 7 saved observations from 2026-10-09 to 2026-10-23. Exact values and changes are listed in the table below. 1,0125060 2026-10-09: 900 OI2026-10-13: 900 OI2026-10-14: 900 OI2026-10-15: 904 OI2026-10-16: 935 OI2026-10-21: 939 OI2026-10-23: 1,012 OI Oct 09, 2026Oct 23, 2026

All saved dates are shown. Changes compare consecutive saved observations. Missing observations are not filled with zero.

IBKR contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026Viewing1,012+73
Oct 21, 2026939+4
Oct 16, 2026935+31
Oct 15, 2026904+4
Oct 14, 20269000
Oct 13, 20269000
Oct 09, 2026900No prior observation