Options market record
COST options flowcalls and puts bought each day.
On Oct 5, 2026, traders bought 7.71K COST call contracts ($20.3M) and 5.1K put contracts ($6.9M). Calls were 0.8× and puts were 0.7× their respective 20-day medians. The underlying closed at $922.50 and 30-day implied volatility was 19.9%. On the call-buy top 10 on 1 of 473 trading days since Nov 11, 2024.
Each point is one trading day since Nov 11, 2024. Latest rankings
Daily contracts bought
Call contracts: min 2.37K, max 51.16K, latest 7.71K. Put contracts: min 2.63K, max 49.17K, latest 5.1K.
30-day implied volatility
30-day IV: min 18.6%, max 47.2%, latest 19.9%.
Days in a top-10 list
Ranked by contracts bought today compared with the stock's own median over the previous 20 trading days.
| Date | Call-buy rank | Put-buy rank | Call vs normal | Put vs normal |
|---|---|---|---|---|
| Dec 22, 2025 | — | 9 | 0.9× | 3.2× |
| Sep 26, 2025 | — | 3 | 5.6× | 6.9× |
| May 30, 2025 | 10 | — | 5.2× | 4.2× |
| Mar 7, 2025 | — | 10 | 3.3× | 5.8× |
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