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Contract OI history

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Jan 21, 2028 EXPIRATION

IBKR $70.00 Put

IBKR280121P00070000

Latest saved OI250Oct 23, 2026
Last change+1vs previous saved observation
Saved market days7Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
IBKR $70.00 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. 2501250 2026-10-09: 244 OI2026-10-13: 244 OI2026-10-14: 244 OI2026-10-15: 244 OI2026-10-16: 247 OI2026-10-21: 249 OI2026-10-23: 250 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, 2026Viewing250+1
Oct 21, 2026249+2
Oct 16, 2026247+3
Oct 15, 20262440
Oct 14, 20262440
Oct 13, 20262440
Oct 09, 2026244No prior observation