PTC Therapeutics, 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 PTCT.
Updated after the US market close on 9 October 2026, with PTC Therapeutics, Inc. at $64.70: open interest within 90 days was 912 call and 859 put contracts, a put/call ratio of 0.94; the day's volume was 9 calls and 31 puts (3.44). The most call open interest sits at the $75.00 strike (333 contracts) and the most put open interest at $65.00 (334). The at-the-money straddle for 16 October 2026, 4 days out, was priced at 6.3% of spot. For 20 November 2026, implied volatility was 61.5% at the put 5% below spot and 51.6% at the call 5% above, +9.9 points.
Where the open interest sits
| Side | Strike | Open interest |
|---|---|---|
| Calls | $75.00 | 333 |
| Puts | $65.00 | 334 |
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.
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