COST Options History — September 2023

In September 2023, COST traded between $544.75 and $568.90. ATM implied volatility averaged 20.0%, placing in the 30.1% IV rank vs the trailing year. The 30-day expected move averaged 5.6%. IV traded above realized volatility by 5.0% (HV 20d: 15.0%). Max pain ranged from $525.00 to $540.00. Net GEX was positive for 19 of 20 trading days. Term structure was in contango for 3 of 20 days. Put/call ratio averaged 0.97.

Notable Days

  • 2023-09-27: Highest Volume — 139,363 contracts
  • 2023-09-27: Largest IV drop — 14.9% change
  • 2023-09-26: Highest IV Rank — 44.6%
  • 2023-09-26: Largest Expected Move — 6.8%

Monthly Statistics

MetricAvgMinMaxOpenClose
Price$557.36$544.75$568.90$544.75$563.92
Max Pain$535.13$525.00$540.00$537.50$540.00
ATM IV20.0%17.9%23.1%19.3%17.9%
Expected Move5.6%4.0%6.8%4.0%5.1%
HV 20d15.0%14.0%16.1%15.1%15.0%
HV 60d14.0%13.5%14.7%14.0%14.7%
IV Rank30.1%20.3%44.6%26.7%20.3%
IV Percentile31.1%19.4%51.6%25.0%19.4%
Term Structure-0.4%-1.0%0.4%-0.3%0.4%
VWIV20.3%14.7%24.1%14.7%18.7%
Skew 25d2.9%2.6%3.4%3.2%2.8%
Skew 10d5.9%4.7%7.0%6.0%6.8%
Call IV 25d18.8%16.8%21.5%18.0%16.8%
Put IV 25d21.7%19.5%24.7%21.2%19.5%
Bid-Ask Spread %10.814.7120.754.715.30
Gamma HHI0.070.040.290.090.04
Net GEX68.2M-88.8M175.9M75.5M52.8M
Net DEX-1.37B-2.24B-777.0M-976.7M-1.34B
Net VEX-11.4M-12.0M-10.8M-11.5M-11.9M
Div Yield0.0%0.0%0.0%0.0%0.0%
P/C Ratio0.970.551.440.960.92
Total Volume34,349.1513,976139,36331,11047,583
Total OI214,787.15179,425261,823221,518261,823

Daily Data (20 trading days)

DatePriceMax PainATM IVExp MoveHV 20dIV RankVWIVSkew 25dTerm StrGEXDEXVEXP/CSpread %Call VolPut VolCall OIPut OI
2023-09-01$544.75$537.5019.3%4.0%15.1%26.7%14.7%3.2%-0.3%75.5M-976.7M-11.5M0.964.7115,87215,238100,431121,087
2023-09-05$546.12$525.0020.0%5.5%14.7%29.7%19.7%3.2%-0.3%35.9M-1.01B-11.4M1.0120.577,7047,75694,611113,860
2023-09-06$546.26$525.0020.3%5.7%14.7%31.4%20.0%3.1%-0.5%40.8M-1.03B-11.6M1.0819.357,9188,51897,831116,553
2023-09-07$548.30$525.0020.2%5.6%14.6%30.7%20.3%3.0%-0.5%69.4M-1.19B-11.7M1.0020.758,8218,86199,873120,721
2023-09-08$550.12$525.0019.7%5.5%14.7%28.7%20.0%2.9%-0.6%113.9M-1.30B-11.6M0.7314.3313,6869,982100,783122,994
2023-09-11$558.77$530.0019.5%5.4%15.8%27.4%19.7%3.0%-0.4%85.0M-1.79B-11.0M0.8112.8315,18212,30495,634117,628
2023-09-12$558.81$530.0019.4%5.4%15.8%27.0%19.9%2.8%-0.4%97.6M-1.79B-11.1M1.1012.646,6697,30799,352120,903
2023-09-13$559.13$530.0019.3%5.4%15.7%26.7%19.7%2.9%-0.5%98.5M-1.82B-10.9M1.1714.006,9058,069100,438122,499
2023-09-14$565.10$535.0018.5%5.2%16.1%23.0%19.8%2.8%-0.4%166.7M-2.24B-10.8M0.778.2218,27014,139101,786124,906
2023-09-15$556.91$540.0019.6%5.5%14.7%28.2%19.8%2.9%-0.4%36.3M-1.50B-11.1M0.5811.0918,30710,613102,929127,732
2023-09-18$562.22$540.0019.9%5.6%14.9%29.6%20.6%2.9%-0.5%65.6M-1.33B-11.0M1.147.4910,31311,78679,044100,381
2023-09-19$565.10$540.0019.8%5.7%15.0%29.1%20.4%2.8%-0.5%81.8M-1.49B-11.1M1.146.327,5788,61083,245105,968
2023-09-20$564.98$540.0020.3%5.8%14.0%31.2%20.6%2.6%-0.8%89.6M-1.51B-11.3M0.556.5414,5957,97685,579108,794
2023-09-21$555.67$540.0021.6%6.2%15.5%37.6%22.5%2.9%-0.6%11.0M-905.9M-11.6M1.1216.3013,41514,99788,469110,394
2023-09-22$560.11$540.0021.8%6.3%14.1%38.0%22.8%2.7%-1.0%-88.8M-1.19B-11.6M0.849.7214,06011,80290,053112,686
2023-09-25$556.74$540.0022.7%6.7%14.4%42.5%23.7%3.3%-0.8%32.1M-983.7M-11.5M1.137.7513,07614,71282,134100,627
2023-09-26$552.98$540.0023.1%6.8%14.7%44.6%24.1%3.2%-0.8%18.8M-777.0M-11.8M1.135.7430,91034,87188,927108,411
2023-09-27$562.38$540.0019.7%5.6%15.1%28.4%20.0%3.4%0.3%105.7M-1.31B-11.7M1.445.8957,16282,201107,796128,257
2023-09-28$568.90$540.0018.2%5.3%15.4%21.8%18.7%2.8%0.4%175.9M-1.87B-12.0M0.896.5936,58532,630113,938136,666
2023-09-29$563.92$540.0017.9%5.1%15.0%20.3%18.7%2.8%0.4%52.8M-1.34B-11.9M0.925.3024,79322,790119,357142,466