Teradyne, Inc. options tape
Read from CBOE's delayed chain on 23 September 2026, with Teradyne, Inc. at $399.87: open interest within 90 days was 18,099 call and 27,345 put contracts, a put/call ratio of 1.51; the day's volume was 2,301 calls and 2,940 puts (1.28). The most call open interest sits at the $400.00 strike (1,512 contracts) and the most put open interest at $235.00 (5,231). The at-the-money straddle for 25 September 2026, 2 days out, was priced at 4.8% of spot. For 16 October 2026, implied volatility was 66.6% at the put 5% below spot and 62.0% at the call 5% above, +4.6 points.
Where the open interest sits
| Side | Strike | Open interest |
|---|---|---|
| Calls | $400.00 | 1,512 |
| Puts | $235.00 | 5,231 |
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
| Contract | Volume | Open interest before | Premium traded |
|---|---|---|---|
| 20 November 2026 put at $390.00 | 855 | 107 | $3.4 million |
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. Premium is mid price times volume times 100.
Source
CBOE delayed quotes for TER, the free 15-minute-delayed chain, read once a day. Figures describe positioning; they are not a forecast.
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