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Contract OI history

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Dec 15, 2028 EXPIRATION

B $38.00 Put

B281215P00038000

Latest saved OI221Oct 23, 2026
Last change0vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
B $38.00 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. 2211100 2026-10-02: 221 OI2026-10-05: 221 OI2026-10-06: 221 OI2026-10-07: 221 OI2026-10-08: 221 OI2026-10-09: 221 OI2026-10-13: 221 OI2026-10-14: 221 OI2026-10-15: 221 OI2026-10-16: 221 OI2026-10-21: 221 OI2026-10-23: 221 OI Oct 02, 2026Oct 23, 2026

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

B contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026Viewing2210
Oct 21, 20262210
Oct 16, 20262210
Oct 15, 20262210
Oct 14, 20262210
Oct 13, 20262210
Oct 09, 20262210
Oct 08, 20262210
Oct 07, 20262210
Oct 06, 20262210
Oct 05, 20262210
Oct 02, 2026221No prior observation