Quest Diagnostics Inc. options tape
Read from CBOE's delayed chain on 23 September 2026, with Quest Diagnostics Inc. at $234.19: open interest within 90 days was 3,002 call and 2,504 put contracts, a put/call ratio of 0.83; the day's volume was 12 calls and 23 puts (1.92). The most call open interest sits at the $270.00 strike (793 contracts) and the most put open interest at $230.00 (1,224). The at-the-money straddle for 16 October 2026, 23 days out, was priced at 5.5% of spot. For 16 October 2026, implied volatility was 29.4% at the put 5% below spot and 21.9% at the call 5% above, +7.6 points.
Where the open interest sits
| Side | Strike | Open interest |
|---|---|---|
| Calls | $270.00 | 793 |
| Puts | $230.00 | 1,224 |
The strike with the most open interest on each side, across expiries within 90 days.
Source
CBOE delayed quotes for DGX, the free 15-minute-delayed chain, read once a day. Figures describe positioning; they are not a forecast.
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