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Contract OI history

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Jan 21, 2028 EXPIRATION

FOUR $50.00 Put

FOUR280121P00050000

Latest saved OI254Oct 23, 2026
Last change0vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
FOUR $50.00 put open interest history 12 saved observations from 2026-10-02 to 2026-10-23. Exact values and changes are listed in the table below. 2541270 2026-10-02: 243 OI2026-10-05: 243 OI2026-10-06: 244 OI2026-10-07: 244 OI2026-10-08: 244 OI2026-10-09: 244 OI2026-10-13: 244 OI2026-10-14: 244 OI2026-10-15: 244 OI2026-10-16: 244 OI2026-10-21: 254 OI2026-10-23: 254 OI Oct 02, 2026Oct 23, 2026

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

FOUR contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026Viewing2540
Oct 21, 2026254+10
Oct 16, 20262440
Oct 15, 20262440
Oct 14, 20262440
Oct 13, 20262440
Oct 09, 20262440
Oct 08, 20262440
Oct 07, 20262440
Oct 06, 2026244+1
Oct 05, 20262430
Oct 02, 2026243No prior observation