OITracker Cboe delayed data

Contract OI history

Back to TSM

Mar 19, 2027 EXPIRATION

TSM $420.00 Put

TSM270319P00420000

Latest saved OI2,245Oct 23, 2026
Last change+28vs previous saved observation
Saved market days11Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
TSM $420.00 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. 2,2451,1220 2026-10-02: 2,126 OI2026-10-05: 2,126 OI2026-10-06: 2,141 OI2026-10-07: 2,145 OI2026-10-08: 2,145 OI2026-10-09: 2,143 OI2026-10-14: 2,142 OI2026-10-15: 1,643 OI2026-10-16: 2,080 OI2026-10-21: 2,217 OI2026-10-23: 2,245 OI Oct 02, 2026Oct 23, 2026

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

TSM contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026Viewing2,245+28
Oct 21, 20262,217+137
Oct 16, 20262,080+437
Oct 15, 20261,643-499
Oct 14, 20262,142-1
Oct 09, 20262,143-2
Oct 08, 20262,1450
Oct 07, 20262,145+4
Oct 06, 20262,141+15
Oct 05, 20262,1260
Oct 02, 20262,126No prior observation