Formfactor Inc. 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 FORM.
Updated after the US market close on 9 October 2026, with Formfactor Inc. at $140.20: open interest within 90 days was 10,074 call and 11,002 put contracts, a put/call ratio of 1.09; the day's volume was 152 calls and 363 puts (2.39). The most call open interest sits at the $140.00 strike (1,635 contracts) and the most put open interest at $90.00 (1,421). The at-the-money straddle for 16 October 2026, 4 days out, was priced at 7.6% of spot. For 20 November 2026, implied volatility was 81.5% at the put 5% below spot and 81.3% at the call 5% above, +0.2 points.
Where the open interest sits
| Side | Strike | Open interest |
|---|---|---|
| Calls | $140.00 | 1,635 |
| Puts | $90.00 | 1,421 |
The strike with the most open interest on each side, across expiries within 90 days.
Source
Official exchange quotes, updated after each US market close. Figures describe positioning; they are not a forecast.
The same record on your computer
GreekSoup is also a free program for your own computer. It reads these same filings for the names you follow, refreshed as they land, with no account. One pasted line installs it.