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Contract OI history

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Nov 20, 2026 EXPIRATION

BFLY $10.00 Put

BFLY261120P00010000

Latest saved OI252Oct 23, 2026
Last change0vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
BFLY $10.00 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. 2521260 2026-10-02: 155 OI2026-10-05: 165 OI2026-10-06: 165 OI2026-10-07: 216 OI2026-10-08: 227 OI2026-10-09: 226 OI2026-10-13: 226 OI2026-10-14: 231 OI2026-10-15: 251 OI2026-10-16: 252 OI2026-10-21: 252 OI2026-10-23: 252 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, 2026Viewing2520
Oct 21, 20262520
Oct 16, 2026252+1
Oct 15, 2026251+20
Oct 14, 2026231+5
Oct 13, 20262260
Oct 09, 2026226-1
Oct 08, 2026227+11
Oct 07, 2026216+51
Oct 06, 20261650
Oct 05, 2026165+10
Oct 02, 2026155No prior observation