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Contract OI history

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Jan 21, 2028 EXPIRATION

GSK $55.00 Call

GSK280121C00055000

Latest saved OI964Oct 23, 2026
Last change+2vs previous saved observation
Saved market days11Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
GSK $55.00 call open interest history 11 saved observations from 2026-10-02 to 2026-10-23. Exact values and changes are listed in the table below. 9644820 2026-10-02: 948 OI2026-10-05: 955 OI2026-10-06: 958 OI2026-10-07: 958 OI2026-10-09: 958 OI2026-10-13: 957 OI2026-10-14: 957 OI2026-10-15: 958 OI2026-10-16: 958 OI2026-10-21: 962 OI2026-10-23: 964 OI Oct 02, 2026Oct 23, 2026

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

GSK contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026Viewing964+2
Oct 21, 2026962+4
Oct 16, 20269580
Oct 15, 2026958+1
Oct 14, 20269570
Oct 13, 2026957-1
Oct 09, 20269580
Oct 07, 20269580
Oct 06, 2026958+3
Oct 05, 2026955+7
Oct 02, 2026948No prior observation