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Contract OI history

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Dec 18, 2026 EXPIRATION

CTSH $40.00 Put

CTSH261218P00040000

Latest saved OI507Oct 23, 2026
Last change-3vs previous saved observation
Saved market days7Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
CTSH $40.00 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. 5102550 2026-10-09: 510 OI2026-10-13: 510 OI2026-10-14: 510 OI2026-10-15: 510 OI2026-10-16: 510 OI2026-10-21: 510 OI2026-10-23: 507 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, 2026Viewing507-3
Oct 21, 20265100
Oct 16, 20265100
Oct 15, 20265100
Oct 14, 20265100
Oct 13, 20265100
Oct 09, 2026510No prior observation