Charles River Laboratories International, Inc. options tape
Read from CBOE's delayed chain on 23 September 2026, with Charles River Laboratories International, Inc. at $280.00: open interest within 90 days was 4,223 call and 1,618 put contracts, a put/call ratio of 0.38; the day's volume was 80 calls and 62 puts (0.78). The most call open interest sits at the $230.00 strike (751 contracts) and the most put open interest at $270.00 (434). The at-the-money straddle for 16 October 2026, 23 days out, was priced at 10.1% of spot. For 16 October 2026, implied volatility was 48.8% at the put 5% below spot and 47.5% at the call 5% above, +1.3 points.
Where the open interest sits
| Side | Strike | Open interest |
|---|---|---|
| Calls | $230.00 | 751 |
| Puts | $270.00 | 434 |
The strike with the most open interest on each side, across expiries within 90 days.
Source
CBOE delayed quotes for CRL, the free 15-minute-delayed chain, read once a day. 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.