OITracker Cboe delayed data

Contract OI history

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Jan 15, 2027 EXPIRATION

BCSF $10.00 Put

BCSF270115P00010000

Latest saved OI546Oct 20, 2026
Last change+13vs previous saved observation
Saved market days10Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
BCSF $10.00 put open interest history 10 saved observations from 2026-10-02 to 2026-10-20. Exact values and changes are listed in the table below. 5462730 2026-10-02: 383 OI2026-10-05: 397 OI2026-10-06: 472 OI2026-10-07: 472 OI2026-10-08: 532 OI2026-10-09: 532 OI2026-10-13: 532 OI2026-10-14: 532 OI2026-10-16: 533 OI2026-10-20: 546 OI Oct 02, 2026Oct 20, 2026

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

BCSF contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 20, 2026Viewing546+13
Oct 16, 2026533+1
Oct 14, 20265320
Oct 13, 20265320
Oct 09, 20265320
Oct 08, 2026532+60
Oct 07, 20264720
Oct 06, 2026472+75
Oct 05, 2026397+14
Oct 02, 2026383No prior observation