COST Options History — April 2019

In April 2019, COST traded between $240.87 and $248.50. ATM implied volatility averaged 16.2%, placing in the 10.7% IV rank vs the trailing year. The 30-day expected move averaged 4.6%. IV traded above realized volatility by 1.7% (HV 20d: 14.5%). Max pain ranged from $220.00 to $240.00. Net GEX was positive for 21 of 21 trading days. Term structure was in contango for 14 of 21 days. Put/call ratio averaged 0.79.

Notable Days

  • 2019-04-05: Highest Volume — 32,165 contracts
  • 2019-04-29: Largest IV spike — 10.5% change
  • 2019-04-30: Highest IV Rank — 31.0%
  • 2019-04-11: Largest Expected Move — 4.8%

Monthly Statistics

MetricAvgMinMaxOpenClose
Price$244.59$240.87$248.50$243.79$245.18
Max Pain$231.43$220.00$240.00$220.00$240.00
ATM IV16.2%15.0%19.8%15.3%19.8%
Expected Move4.6%4.3%4.8%4.7%4.5%
HV 20d14.5%10.3%21.1%20.2%15.1%
HV 60d15.5%14.9%16.3%15.4%16.2%
IV Rank10.7%3.6%31.0%5.4%31.0%
IV Percentile21.3%4.4%50.4%9.9%50.4%
Term Structure1.2%-0.7%4.5%0.4%-0.3%
VWIV16.0%14.8%17.1%17.1%15.8%
Skew 25d2.6%2.2%3.4%3.0%2.7%
Skew 10d5.0%4.5%5.8%5.7%5.3%
Call IV 25d15.1%13.9%19.5%14.2%19.2%
Put IV 25d17.7%16.3%22.4%17.1%21.9%
Bid-Ask Spread %4.682.4414.293.3214.29
Gamma HHI0.210.130.360.220.15
Net GEX34.7M11.6M59.1M43.1M20.2M
Net DEX-709.5M-952.1M-402.4M-810.0M-483.7M
Net VEX-3.7M-3.9M-3.4M-3.4M-3.7M
Div Yield0.0%0.0%0.0%0.0%0.0%
P/C Ratio0.790.341.541.330.51
Total Volume14,829.818,50132,16515,68312,218
Total OI149,981.714130,464167,366138,542140,581

Daily Data (21 trading days)

DatePriceMax PainATM IVExp MoveHV 20dIV RankVWIVSkew 25dTerm StrGEXDEXVEXP/CSpread %Call VolPut VolCall OIPut OI
2019-04-01$243.79$220.0015.3%4.7%20.2%5.4%17.1%3.0%0.4%43.1M-810.0M-3.4M1.333.326,7418,94264,46474,078
2019-04-02$240.87$220.0015.8%4.7%21.1%8.5%16.7%2.3%1.2%31.2M-679.1M-3.6M1.294.426,6578,60266,68376,990
2019-04-03$242.40$220.0015.1%4.7%21.0%4.4%16.4%2.5%0.9%40.7M-761.7M-3.6M0.633.436,3764,03469,37081,174
2019-04-04$244.31$220.0015.1%4.7%20.0%4.3%16.1%2.2%1.0%51.3M-860.0M-3.5M0.483.377,5473,59069,11181,913
2019-04-05$246.12$230.0015.5%4.3%11.6%6.4%15.4%2.2%1.1%47.4M-952.1M-3.5M1.542.5912,66619,49970,16082,700
2019-04-08$246.35$230.0015.7%4.6%11.5%7.8%15.6%2.6%0.3%45.4M-871.0M-3.7M1.133.694,8985,52870,02480,130
2019-04-09$244.68$230.0016.5%4.6%11.1%12.6%15.5%3.4%-0.6%39.5M-782.3M-3.8M1.043.195,1815,38372,30782,279
2019-04-10$245.58$230.0016.5%4.6%10.3%12.3%15.7%2.4%-0.7%48.4M-850.7M-3.8M0.664.027,0854,66374,09682,981
2019-04-11$241.35$230.0016.6%4.8%11.6%12.9%16.5%3.1%0.2%19.5M-607.4M-3.9M0.703.1815,44810,84077,22684,236
2019-04-12$242.01$230.0015.6%4.5%11.6%7.4%15.4%2.6%0.4%25.0M-677.3M-3.8M0.732.448,6496,35779,97087,379
2019-04-15$246.65$230.0015.5%4.5%13.1%6.8%15.8%2.7%-0.2%59.1M-908.9M-3.7M0.552.6611,8446,57074,43882,224
2019-04-16$244.96$230.0015.2%4.3%13.4%4.7%15.8%2.6%-0.1%32.5M-805.3M-3.7M0.553.748,7524,79475,68984,889
2019-04-17$245.71$235.0015.5%4.4%13.4%6.5%15.7%2.5%0.0%40.3M-856.9M-3.8M0.784.055,9374,61678,68086,229
2019-04-18$245.72$235.0015.0%4.3%13.1%3.6%14.8%2.5%-0.1%26.3M-850.7M-3.8M0.443.3811,4174,98479,38287,984
2019-04-22$243.07$235.0016.1%4.6%13.5%10.3%16.1%2.5%4.1%13.7M-474.2M-3.8M0.784.346,6105,15859,34471,120
2019-04-23$245.40$235.0015.8%4.5%13.7%8.5%16.1%2.3%4.1%23.5M-557.5M-3.8M0.346.7615,1065,20862,14874,060
2019-04-24$248.50$240.0015.6%4.5%14.2%7.3%15.3%2.5%4.1%51.9M-705.7M-3.8M0.684.418,9306,04864,72075,527
2019-04-25$246.10$240.0016.8%4.7%14.8%14.3%16.3%2.2%4.5%39.8M-556.6M-3.8M0.654.357,2384,68065,19876,914
2019-04-26$243.25$240.0017.8%4.7%15.2%19.6%16.7%2.5%4.4%11.6M-402.4M-3.9M0.846.957,6666,46366,70478,354
2019-04-29$244.33$240.0019.6%4.7%15.3%30.3%16.5%2.9%-0.3%18.1M-445.7M-3.9M0.859.704,5843,91762,54775,613
2019-04-30$245.18$240.0019.8%4.5%15.1%31.0%15.8%2.7%-0.3%20.2M-483.7M-3.7M0.5114.298,0694,14963,20877,373