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Contract OI history

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Jan 21, 2028 EXPIRATION

BFLY $7.50 Put

BFLY280121P00007500

Latest saved OI341Oct 23, 2026
Last change+9vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
BFLY $7.50 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. 3411700 2026-10-02: 309 OI2026-10-05: 309 OI2026-10-06: 309 OI2026-10-07: 311 OI2026-10-08: 311 OI2026-10-09: 311 OI2026-10-13: 312 OI2026-10-14: 312 OI2026-10-15: 312 OI2026-10-16: 312 OI2026-10-21: 332 OI2026-10-23: 341 OI Oct 02, 2026Oct 23, 2026

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

BFLY contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026Viewing341+9
Oct 21, 2026332+20
Oct 16, 20263120
Oct 15, 20263120
Oct 14, 20263120
Oct 13, 2026312+1
Oct 09, 20263110
Oct 08, 20263110
Oct 07, 2026311+2
Oct 06, 20263090
Oct 05, 20263090
Oct 02, 2026309No prior observation