OS

Market Tracker

  • OS (Selected)

  • OSAT

    Orbsat Corp.
  • OSATW

    Orbsat Corp.
  • OSBC

    Old Second Bancorp, Inc.
  • OSCR

    Oscar Health, Inc.
  • OSCV

    Opus Small Cap Value Plus ETF
  • OSG

    Overseas Shipholding Group, Inc.
  • OSH

    Oak Street Health, Inc.
  • OSI=

  • OSIS

    OSI Systems, Inc.

OS Most Active Options Strike Prices Whale BUY Activity - 5 day

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Represents the strikes that had the highest premium of whale flow (on the ASK side) over the past 5 trading days.

OS Most Active Options Strike Prices Whale SALES Activity - 5 day

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Represents the strikes that had the highest premium of whale flow (on the BID side) over the past 5 trading days.

OS Open Interest Trend

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Total Open Interest of Calls & Puts across all strikes and expirations over the past 16 trading days.

OS Largest 1-Day Open Interest Movements

Expires Type Strike OI Change Percent
02/20/2026 CALL $25.00 34 +34
07/18/2025 PUT $25.00 29 +7 +31.82%
11/21/2025 PUT $30.00 52 +6 +13.04%
07/18/2025 CALL $30.00 246 +3 +1.23%
08/15/2025 PUT $20.00 20 +3 +17.65%
02/20/2026 CALL $17.50 2 +2
01/15/2027 PUT $40.00 0 0
01/15/2027 PUT $45.00 0 0
01/15/2027 PUT $50.00 0 0
08/15/2025 CALL $22.50 585 -1 -0.17%
10/17/2025 CALL $30.00 391 -1 -0.26%
01/15/2027 CALL $35.00 27 -12 -30.77%

Contracts with largest changes in open interest from the previous trading day to the current/most recent.

OS News

  • Waystar, OneStream, Vertex Among Analyst Favorites As Solid Guidance Fuel Bullish Outlook

    05/27 04:01 pm

    Benzinga

    Read more
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