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Contract OI history

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Dec 18, 2026 EXPIRATION

VST $170.00 Put

VST261218P00170000

Latest saved OI247Oct 23, 2026
Last change-3vs previous saved observation
Saved market days11Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
VST $170.00 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. 2501250 2026-10-02: 177 OI2026-10-05: 172 OI2026-10-06: 175 OI2026-10-07: 240 OI2026-10-08: 240 OI2026-10-09: 249 OI2026-10-14: 250 OI2026-10-15: 250 OI2026-10-16: 250 OI2026-10-21: 250 OI2026-10-23: 247 OI Oct 02, 2026Oct 23, 2026

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

VST contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026247-3
Oct 21, 2026Viewing2500
Oct 16, 20262500
Oct 15, 20262500
Oct 14, 2026250+1
Oct 09, 2026249+9
Oct 08, 20262400
Oct 07, 2026240+65
Oct 06, 2026175+3
Oct 05, 2026172-5
Oct 02, 2026177No prior observation