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Contract OI history

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Jan 21, 2028 EXPIRATION

SOUN $20.00 Put

SOUN280121P00020000

Latest saved OI291Oct 23, 2026
Last change+1vs previous saved observation
Saved market days7Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
SOUN $20.00 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. 3141570 2026-10-09: 314 OI2026-10-13: 297 OI2026-10-14: 297 OI2026-10-15: 295 OI2026-10-16: 295 OI2026-10-21: 290 OI2026-10-23: 291 OI Oct 09, 2026Oct 23, 2026

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

SOUN contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026Viewing291+1
Oct 21, 2026290-5
Oct 16, 20262950
Oct 15, 2026295-2
Oct 14, 20262970
Oct 13, 2026297-17
Oct 09, 2026314No prior observation