COST Options History — April 2018

In April 2018, COST traded between $182.78 and $197.37. ATM implied volatility averaged 19.7%, placing in the 37.6% IV rank vs the trailing year. The 30-day expected move averaged 5.6%. IV traded below realized volatility by 5.2% (HV 20d: 24.9%). Max pain ranged from $185.00 to $190.00. Net GEX was positive for 19 of 21 trading days. Term structure was in contango for 9 of 21 days. Put/call ratio averaged 1.02.

Notable Days

  • 2018-04-16: Highest Volume — 34,418 contracts
  • 2018-04-30: Largest IV spike — 12.2% change
  • 2018-04-02: Highest IV Rank — 57.5%
  • 2018-04-02: Largest Expected Move — 7.1%

Monthly Statistics

MetricAvgMinMaxOpenClose
Price$190.44$182.78$197.37$182.78$197.37
Max Pain$187.86$185.00$190.00$185.00$190.00
ATM IV19.7%17.5%23.8%23.8%20.6%
Expected Move5.6%4.9%7.1%7.1%5.2%
HV 20d24.9%18.0%27.8%25.7%18.0%
HV 60d22.7%21.9%23.4%22.1%23.0%
IV Rank37.6%26.6%57.5%57.5%42.1%
IV Percentile65.9%42.5%92.9%92.9%79.8%
Term Structure0.6%-1.0%4.0%0.6%-0.6%
VWIV20.2%17.8%25.6%25.6%18.1%
Skew 25d3.6%2.9%5.0%5.0%3.4%
Skew 10d7.8%6.2%12.4%8.7%6.9%
Call IV 25d18.4%16.0%22.2%22.2%20.2%
Put IV 25d22.0%19.2%27.2%27.2%23.6%
Bid-Ask Spread %8.224.9415.467.028.02
Gamma HHI0.140.070.210.070.12
Net GEX23.2M-4.2M48.6M-4.2M32.7M
Net DEX-507.6M-972.6M-87.3M-87.3M-728.1M
Net VEX-4.1M-4.5M-3.7M-4.5M-3.7M
Div Yield0.0%0.0%0.0%0.0%0.0%
P/C Ratio1.020.521.660.790.79
Total Volume16,809.0959,53834,41823,11014,037
Total OI205,236.857171,776229,415194,065180,698

Daily Data (21 trading days)

DatePriceMax PainATM IVExp MoveHV 20dIV RankVWIVSkew 25dTerm StrGEXDEXVEXP/CSpread %Call VolPut VolCall OIPut OI
2018-04-02$182.78$185.0023.8%7.1%25.7%57.5%25.6%5.0%0.6%-4.2M-87.3M-4.5M0.797.0212,91910,19178,765115,300
2018-04-03$183.11$185.0023.0%6.7%25.3%53.6%22.8%2.9%0.7%-461.3K-130.7M-4.5M1.336.685,2907,05187,054120,269
2018-04-04$186.15$185.0021.2%6.2%26.1%45.1%21.5%4.2%-1.0%11.7M-303.1M-4.5M0.898.326,7936,04788,248121,965
2018-04-05$186.41$185.0020.0%5.8%25.3%39.1%20.9%4.0%0.3%13.1M-304.5M-4.5M1.495.454,9467,35088,695122,768
2018-04-06$184.00$185.0021.8%6.0%25.4%47.7%21.5%2.9%-0.4%4.6M-172.1M-4.4M1.669.776,05410,07589,317124,791
2018-04-09$185.43$185.0021.2%6.0%25.0%45.0%20.9%4.0%-0.2%7.6M-243.1M-4.5M0.938.146,0545,66088,063118,496
2018-04-10$183.50$185.0021.3%5.8%25.0%45.4%22.0%4.1%-1.0%1.2M-127.5M-4.3M1.378.367,44110,18189,394119,490
2018-04-11$185.08$185.0020.5%5.8%24.9%41.2%20.5%3.7%-0.2%6.6M-212.3M-4.3M1.008.918,7158,73091,595124,580
2018-04-12$189.38$185.0018.7%5.2%25.6%32.5%18.9%3.2%-0.6%37.7M-546.7M-4.1M0.917.2915,14913,80394,032126,864
2018-04-13$188.91$190.0018.4%5.2%25.6%31.1%19.7%4.9%-0.4%29.3M-486.6M-4.2M1.257.728,12210,19096,042128,187
2018-04-16$194.87$190.0018.0%5.1%27.8%29.3%19.5%3.1%-0.0%37.7M-831.1M-3.8M0.677.0220,65213,76690,848122,317
2018-04-17$196.46$190.0017.5%5.0%27.6%26.6%18.9%3.1%-0.3%48.6M-962.8M-3.7M0.994.949,4179,34195,495125,221
2018-04-18$196.77$190.0017.7%5.1%27.1%27.8%18.2%3.0%-0.7%47.9M-972.6M-3.8M1.045.889,93310,37295,975126,314
2018-04-19$195.37$190.0018.0%5.2%27.2%29.2%19.7%3.1%-0.3%48.5M-882.6M-4.1M0.899.868,7647,76799,382129,310
2018-04-20$193.27$190.0018.5%5.3%26.5%31.6%19.3%3.6%0.3%18.5M-722.0M-4.2M1.058.696,7307,05399,402130,013
2018-04-23$193.02$190.0018.7%5.5%26.2%32.8%19.3%3.5%3.1%21.5M-513.6M-4.1M0.875.876,1545,37875,02796,749
2018-04-24$191.65$190.0019.3%5.7%23.7%35.5%18.9%4.0%3.3%19.8M-453.5M-4.0M0.5215.4610,6595,51776,91798,131
2018-04-25$193.88$190.0018.8%5.5%22.0%33.3%20.5%3.6%2.8%32.2M-580.2M-4.0M1.1411.974,4575,08183,76798,989
2018-04-26$195.60$190.0018.5%5.2%22.1%31.5%19.2%3.2%3.6%41.4M-681.8M-3.8M0.6210.108,5785,29884,45599,951
2018-04-27$196.32$190.0018.4%4.9%21.1%31.1%17.8%3.3%4.0%30.6M-716.6M-3.9M1.247.165,9157,36186,322100,776
2018-04-30$197.37$190.0020.6%5.2%18.0%42.1%18.1%3.4%-0.6%32.7M-728.1M-3.7M0.798.027,8286,20981,58399,115