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Contract OI history

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Nov 20, 2026 EXPIRATION

TDC $27.50 Put

TDC261120P00027500

Latest saved OI238Oct 23, 2026
Last change+5vs previous saved observation
Saved market days11Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
TDC $27.50 put open interest history 11 saved observations from 2026-10-02 to 2026-10-23. Exact values and changes are listed in the table below. 2381190 2026-10-02: 152 OI2026-10-05: 148 OI2026-10-06: 162 OI2026-10-07: 162 OI2026-10-08: 172 OI2026-10-09: 174 OI2026-10-13: 174 OI2026-10-15: 220 OI2026-10-16: 218 OI2026-10-21: 233 OI2026-10-23: 238 OI Oct 02, 2026Oct 23, 2026

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

TDC contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026Viewing238+5
Oct 21, 2026233+15
Oct 16, 2026218-2
Oct 15, 2026220+46
Oct 13, 20261740
Oct 09, 2026174+2
Oct 08, 2026172+10
Oct 07, 20261620
Oct 06, 2026162+14
Oct 05, 2026148-4
Oct 02, 2026152No prior observation