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Contract OI history

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Jan 21, 2028 EXPIRATION

CTSH $50.00 Put

CTSH280121P00050000

Latest saved OI399Oct 23, 2026
Last change+1vs previous saved observation
Saved market days7Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
CTSH $50.00 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. 3991990 2026-10-09: 398 OI2026-10-13: 398 OI2026-10-14: 398 OI2026-10-15: 398 OI2026-10-16: 398 OI2026-10-21: 398 OI2026-10-23: 399 OI Oct 09, 2026Oct 23, 2026

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

CTSH contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026Viewing399+1
Oct 21, 20263980
Oct 16, 20263980
Oct 15, 20263980
Oct 14, 20263980
Oct 13, 20263980
Oct 09, 2026398No prior observation