COST Options History — February 2026

In February 2026, COST traded between $968.00 and $1014.88. ATM implied volatility averaged 26.9%, placing in the 35.6% IV rank vs the trailing year. The 30-day expected move averaged 7.5%. IV traded above realized volatility by 5.9% (HV 20d: 21.0%). Max pain ranged from $920.00 to $940.00. Net GEX was positive for 19 of 19 trading days. Term structure was in contango for 1 of 19 days. Put/call ratio averaged 0.67.

Notable Days

  • 2026-02-13: Highest Volume — 67,627 contracts
  • 2026-02-04: Largest IV spike — 7.3% change
  • 2026-02-04: Highest IV Rank — 42.1%
  • 2026-02-27: Largest Expected Move — 8.2%

Monthly Statistics

MetricAvgMinMaxOpenClose
Price$990.93$968.00$1014.88$968.00$999.16
Max Pain$931.32$920.00$940.00$930.00$940.00
ATM IV26.9%25.3%28.6%25.3%26.6%
Expected Move7.5%6.1%8.2%6.1%8.2%
HV 20d21.0%18.4%24.4%24.4%20.3%
HV 60d21.3%20.8%22.0%21.1%21.2%
IV Rank35.6%29.5%42.1%29.5%34.8%
IV Percentile78.5%61.5%90.1%61.5%76.2%
Term Structure-0.8%-2.0%0.0%-1.0%-0.8%
VWIV26.7%21.7%28.9%21.7%28.9%
Skew 25d1.7%-0.7%2.8%2.8%2.5%
Skew 10d2.6%-3.3%6.1%6.1%1.3%
Call IV 25d26.4%24.5%29.0%24.5%25.9%
Put IV 25d28.1%27.1%29.5%27.3%28.4%
Bid-Ask Spread %49.5038.8661.9461.9452.08
Gamma HHI0.060.030.260.030.13
Net GEX183.7M22.0M474.7M106.9M188.1M
Net DEX-4.03B-5.81B-2.84B-3.31B-3.53B
Net VEX-26.9M-28.1M-25.6M-27.1M-25.8M
Div Yield0.0%0.0%0.0%0.0%0.0%
P/C Ratio0.670.391.110.540.67
Total Volume33,498.31616,80667,62737,52531,717
Total OI238,533.789210,721259,022222,471227,250

Daily Data (19 trading days)

DatePriceMax PainATM IVExp MoveHV 20dIV RankVWIVSkew 25dTerm StrGEXDEXVEXP/CSpread %Call VolPut VolCall OIPut OI
2026-02-02$968.00$930.0025.3%6.1%24.4%29.5%21.7%2.8%-1.0%106.9M-3.31B-27.1M0.5461.9424,34413,181116,438106,033
2026-02-03$977.46$930.0026.7%6.5%22.9%34.9%23.0%1.1%-1.0%192.7M-4.06B-28.1M0.5057.6531,30515,789124,758110,582
2026-02-04$980.13$930.0028.6%6.9%22.6%42.1%24.6%-0.7%-1.7%199.7M-4.23B-28.1M0.4958.7730,52214,854128,026113,168
2026-02-05$993.42$920.0028.1%7.7%22.0%40.2%27.2%1.6%-1.7%311.3M-5.03B-27.8M0.3943.6131,89012,415135,814119,081
2026-02-06$999.30$920.0026.2%7.2%18.4%33.2%26.2%2.7%-0.3%474.7M-5.39B-27.3M0.6542.7222,81114,813138,247120,775
2026-02-09$998.33$920.0026.2%7.3%18.4%33.2%26.6%1.9%-0.7%234.6M-4.74B-27.1M0.6138.8619,28511,772127,056106,518
2026-02-10$973.84$920.0026.9%7.3%20.0%35.7%25.9%0.9%-2.0%134.2M-3.29B-27.5M0.5941.5918,19810,726129,843110,501
2026-02-11$979.99$925.0026.1%7.4%19.9%32.8%26.0%1.0%-0.3%160.0M-3.58B-27.5M0.4644.8716,9167,773133,038113,803
2026-02-12$1003.25$925.0027.6%7.7%20.9%38.3%27.4%2.8%-0.7%307.0M-5.22B-27.0M0.5547.0030,56016,732135,092115,594
2026-02-13$1014.88$930.0027.5%7.7%21.1%38.1%27.9%2.3%-1.5%274.7M-5.81B-27.0M0.5946.2542,43125,196136,825118,528
2026-02-17$1012.12$930.0027.9%8.0%21.2%39.4%28.7%1.9%-0.7%226.1M-5.11B-26.5M0.8546.5814,20212,125131,561108,276
2026-02-18$995.57$935.0027.1%7.8%22.3%36.4%27.8%1.5%-0.5%161.2M-4.12B-26.1M1.1149.3512,95014,376133,884112,215
2026-02-19$988.31$940.0027.2%7.9%21.1%36.9%27.5%1.4%-1.0%98.0M-3.55B-26.6M0.6054.0219,17111,545135,329116,754
2026-02-20$985.31$940.0026.4%7.6%20.8%33.9%26.9%1.5%-0.3%22.0M-3.44B-26.1M0.6156.6524,16914,773138,521118,310
2026-02-23$985.15$940.0027.3%8.1%20.7%37.2%28.6%2.6%-0.1%86.6M-2.84B-26.5M1.0647.088,1688,687114,54096,181
2026-02-24$994.71$940.0026.5%8.0%20.9%34.1%28.3%2.0%-0.4%128.5M-3.27B-26.3M0.7548.779,8927,421116,45699,353
2026-02-25$992.82$940.0026.0%7.8%20.5%32.5%27.4%1.8%0.0%115.7M-3.20B-26.1M0.7949.989,3867,420118,016102,022
2026-02-26$985.86$940.0026.1%7.9%20.3%32.9%27.7%0.7%-0.6%68.7M-2.84B-25.6M0.8452.6510,3018,652119,102104,652
2026-02-27$999.16$940.0026.6%8.2%20.3%34.8%28.9%2.5%-0.8%188.1M-3.53B-25.8M0.6752.0818,97112,746120,764106,486