Volatility Strike Skew — COST
Data as of
Volume-weighted call and put implied volatility per strike for the chosen expiration, with option volume bars.
DATA IS DELAYED — showing Oct 21, 2026. Subscribe to get the latest end-of-day data.
IV QuoteOption ChainPrice History10 Day SnapshotStrike PeggerVolatility SkewTrade Finder
On Oct 21, 2026, COST options across all expirations averaged 22.4% implied volatility for calls and 25.8% for puts (volume-weighted): puts trade 3.4 points above calls, the usual downside skew.
| Strike | Volume | Call IVol | Put IVol |
|---|---|---|---|
| All | 21,392 | 22.4% | 25.8% |
| 840.00 | 135 | 29.8% | 58.7% |
| 845.00 | 124 | - | 61.3% |
| 850.00 | 56 | 38.2% | 31.5% |
| 855.00 | 39 | 32.7% | 30.7% |
| 860.00 | 148 | 29.1% | 46.5% |
| 865.00 | 50 | 31.4% | 31.0% |
| 870.00 | 172 | 26.5% | 53.1% |
| 875.00 | 87 | 25.9% | 29.5% |
| 880.00 | 236 | 43.5% | 37.8% |
| 885.00 | 113 | 30.0% | 28.7% |
| 890.00 | 134 | 25.8% | 25.5% |
| 895.00 | 122 | 28.6% | 32.9% |
| 897.50 | 32 | - | 56.6% |
| 900.00 | 310 | 27.9% | 24.5% |
| 905.00 | 28 | - | 23.9% |
| 910.00 | 276 | 38.1% | 25.0% |
| 915.00 | 192 | 24.6% | 25.4% |
| 920.00 | 301 | 22.9% | 23.3% |
| 922.50 | 63 | - | 26.4% |
| 925.00 | 229 | 23.8% | 22.9% |
| 927.50 | 36 | - | 25.4% |
| 930.00 | 235 | 26.5% | 25.3% |
| 935.00 | 207 | 28.1% | 20.9% |
| 937.50 | 48 | 31.5% | 29.5% |
| 940.00 | 271 | 24.6% | 23.2% |
| 942.50 | 4 | - | 28.2% |
| 945.00 | 195 | 27.0% | 21.5% |
| 947.50 | 27 | 27.9% | 30.7% |
| 950.00 | 502 | 24.2% | 24.3% |
| 952.50 | 297 | - | 21.6% |
| 955.00 | 575 | 28.1% | 21.2% |
| 957.50 | 33 | - | 21.7% |
| 960.00 | 403 | 22.4% | 22.2% |
| 965.00 | 322 | 24.2% | 21.2% |
| 970.00 | 694 | 21.3% | 21.3% |
| 975.00 | 340 | 20.1% | 21.3% |
| 980.00 | 542 | 24.1% | 20.4% |
| 985.00 | 242 | 21.6% | 20.6% |
| 990.00 | 731 | 20.3% | 19.5% |
| 995.00 | 485 | 21.0% | 18.5% |
| 1,000.00 | 1,164 | 20.3% | 20.2% |
| 1,005.00 | 309 | 20.6% | 18.8% |
| 1,010.00 | 1,089 | 20.0% | 18.7% |
| 1,015.00 | 1,148 | 20.4% | 18.9% |
| 1,020.00 | 1,224 | 20.4% | 23.7% |
| 1,025.00 | 3,717 | 21.8% | 17.3% |
| 1,030.00 | 824 | 22.4% | 17.6% |
| 1,035.00 | 96 | 22.0% | 18.2% |
| 1,040.00 | 719 | 24.0% | 18.9% |
| 1,045.00 | 77 | 26.0% | 18.3% |
| 1,050.00 | 269 | 24.2% | 19.7% |
| 1,055.00 | 33 | 23.9% | - |
| 1,060.00 | 182 | 20.5% | 20.3% |
| 1,065.00 | 107 | 20.7% | - |
| 1,070.00 | 177 | 22.6% | 20.6% |
| 1,075.00 | 127 | 21.3% | - |
| 1,080.00 | 284 | 21.6% | 20.2% |
| 1,085.00 | 28 | 21.6% | 17.3% |
| 1,090.00 | 36 | 26.2% | - |
| 1,095.00 | 52 | 26.7% | 19.3% |
| 1,100.00 | 188 | 26.3% | 21.5% |
| 1,105.00 | 11 | 40.2% | - |
| 1,110.00 | 35 | 26.2% | - |
| 1,120.00 | 166 | 21.8% | 26.7% |
| 1,130.00 | 36 | 22.0% | - |
| 1,135.00 | 59 | 55.2% | - |
| 1,140.00 | 108 | 41.6% | 21.2% |
| 1,145.00 | 58 | 67.6% | 112.9% |
| 1,150.00 | 33 | 54.8% | 115.5% |