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Contract OI history

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Nov 20, 2026 EXPIRATION

CYTK $55.00 Put

CYTK261120P00055000

Latest saved OI255Oct 23, 2026
Last change0vs previous saved observation
Saved market days7Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
CYTK $55.00 put open interest history 7 saved observations from 2026-10-09 to 2026-10-23. Exact values and changes are listed in the table below. 2551270 2026-10-09: 168 OI2026-10-13: 167 OI2026-10-14: 167 OI2026-10-15: 167 OI2026-10-16: 164 OI2026-10-21: 255 OI2026-10-23: 255 OI Oct 09, 2026Oct 23, 2026

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

CYTK contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026Viewing2550
Oct 21, 2026255+91
Oct 16, 2026164-3
Oct 15, 20261670
Oct 14, 20261670
Oct 13, 2026167-1
Oct 09, 2026168No prior observation