OITracker Cboe delayed data

Contract OI history

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Mar 19, 2027 EXPIRATION

BLSH $30.00 Put

BLSH270319P00030000

Latest saved OI448Oct 23, 2026
Last change0vs previous saved observation
Saved market days11Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
BLSH $30.00 put open interest history 11 saved observations from 2026-10-02 to 2026-10-23. Exact values and changes are listed in the table below. 4482240 2026-10-02: 412 OI2026-10-05: 413 OI2026-10-06: 413 OI2026-10-07: 413 OI2026-10-08: 414 OI2026-10-09: 413 OI2026-10-13: 423 OI2026-10-14: 423 OI2026-10-16: 448 OI2026-10-20: 448 OI2026-10-23: 448 OI Oct 02, 2026Oct 23, 2026

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

BLSH contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026Viewing4480
Oct 20, 20264480
Oct 16, 2026448+25
Oct 14, 20264230
Oct 13, 2026423+10
Oct 09, 2026413-1
Oct 08, 2026414+1
Oct 07, 20264130
Oct 06, 20264130
Oct 05, 2026413+1
Oct 02, 2026412No prior observation