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Glaukos Corp. options tape

These figures are updated after the US market closes, every trading day. For the live chain, go to CBOE's own page for GKOS.

Updated after the US market close on 9 October 2026, with Glaukos Corp. at $165.69: open interest within 90 days was 4,662 call and 8,300 put contracts, a put/call ratio of 1.78; the day's volume was 76 calls and 839 puts (11.04). The most call open interest sits at the $180.00 strike (1,401 contracts) and the most put open interest at $150.00 (2,006). The at-the-money straddle for 16 October 2026, 4 days out, was priced at 5.4% of spot. For 20 November 2026, implied volatility was 70.0% at the put 5% below spot and 64.7% at the call 5% above, +5.3 points.

Spot$165.69+2.73% on the day
Put/call, open interest1.788,300 puts, 4,662 calls
Put/call, volume11.04839 puts, 76 calls
Priced move5.4%straddle to 16 October 2026, 4 days
30-day implied volatility60.9%
Put minus call IV, 5% out+5.3 ptsto 20 November 2026

Where the open interest sits

SideStrikeOpen interest
Calls$180.001,401
Puts$150.002,006

The strike with the most open interest on each side, across expiries within 90 days.

Strikes where the day's volume was at least twice the open interest

ContractVolumeOpen interest beforePremium traded
20 November 2026 put at $155.0033238$341,960
Volume of at least 200 contracts and at least twice the open interest, with at least $25,000 of premium at the mid; contracts expiring the same day are left out.
Read morePremium is mid price times volume times 100.

Source

Official exchange quotes, updated after each US market close. Figures describe positioning; they are not a forecast.

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