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Contract OI history

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Dec 18, 2026 EXPIRATION

PTC $190.00 Put

PTC261218P00190000

Latest saved OI1,007Oct 23, 2026
Last change0vs previous saved observation
Saved market days7Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
PTC $190.00 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. 1,0075030 2026-10-09: 278 OI2026-10-13: 546 OI2026-10-14: 546 OI2026-10-15: 556 OI2026-10-16: 573 OI2026-10-21: 1,007 OI2026-10-23: 1,007 OI Oct 09, 2026Oct 23, 2026

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

PTC contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026Viewing1,0070
Oct 21, 20261,007+434
Oct 16, 2026573+17
Oct 15, 2026556+10
Oct 14, 20265460
Oct 13, 2026546+268
Oct 09, 2026278No prior observation