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Contract OI history

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Nov 20, 2026 EXPIRATION

BYSI $2.50 Call

BYSI261120C00002500

Latest saved OI135Oct 23, 2026
Last change+1vs previous saved observation
Saved market days6Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
BYSI $2.50 call open interest history 6 saved observations from 2026-10-09 to 2026-10-23. Exact values and changes are listed in the table below. 135670 2026-10-09: 134 OI2026-10-13: 134 OI2026-10-14: 134 OI2026-10-16: 134 OI2026-10-21: 134 OI2026-10-23: 135 OI Oct 09, 2026Oct 23, 2026

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

BYSI contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026Viewing135+1
Oct 21, 20261340
Oct 16, 20261340
Oct 14, 20261340
Oct 13, 20261340
Oct 09, 2026134No prior observation