COST Options History — December 2018

In December 2018, COST traded between $191.07 and $232.96. ATM implied volatility averaged 26.8%, placing in the 68.9% IV rank vs the trailing year. The 30-day expected move averaged 7.9%. IV traded below realized volatility by 8.9% (HV 20d: 35.7%). Max pain ranged from $200.00 to $230.00. Net GEX was positive for 9 of 20 trading days. Term structure was in contango for 5 of 20 days. Put/call ratio averaged 1.02.

Notable Days

  • 2018-12-14: Highest Volume — 106,603 contracts
  • 2018-12-04: Largest IV spike — 11.7% change
  • 2018-12-24: Highest IV Rank — 96.5%
  • 2018-12-24: Largest Expected Move — 9.3%

Monthly Statistics

MetricAvgMinMaxOpenClose
Price$212.37$191.07$232.96$231.36$203.49
Max Pain$210.38$200.00$230.00$230.00$200.00
ATM IV26.8%21.0%31.8%21.0%26.2%
Expected Move7.9%6.9%9.3%6.9%7.8%
HV 20d35.7%24.3%44.9%24.3%43.5%
HV 60d29.9%24.7%34.3%24.7%34.3%
IV Rank68.9%37.0%96.5%37.0%65.5%
IV Percentile93.8%65.9%99.6%65.9%91.3%
Term Structure-0.4%-2.4%0.3%0.2%0.1%
VWIV27.5%24.3%32.0%24.3%27.2%
Skew 25d4.0%2.6%5.5%2.6%4.0%
Skew 10d8.2%4.5%11.4%4.5%8.4%
Call IV 25d25.2%19.9%29.5%19.9%24.6%
Put IV 25d29.2%22.5%33.6%22.5%28.6%
Bid-Ask Spread %10.565.7820.638.585.78
Gamma HHI0.110.050.280.110.06
Net GEX-1.8M-43.1M38.0M32.4M-4.2M
Net DEX-42.5M-704.8M570.8M-623.7M-48.5M
Net VEX-3.1M-3.3M-2.7M-3.2M-2.9M
Div Yield0.0%0.0%0.0%0.0%0.0%
P/C Ratio1.020.441.600.460.62
Total Volume23,210.457,559106,60328,19212,826
Total OI210,560.8180,100245,661192,309185,441

Daily Data (20 trading days)

DatePriceMax PainATM IVExp MoveHV 20dIV RankVWIVSkew 25dTerm StrGEXDEXVEXP/CSpread %Call VolPut VolCall OIPut OI
2018-12-03$231.36$230.0021.0%6.9%24.3%37.0%24.3%2.6%0.2%32.4M-623.7M-3.2M0.468.5819,2488,94479,684112,625
2018-12-04$226.34$230.0023.5%8.0%24.7%50.5%28.3%3.5%0.1%14.0M-389.1M-3.3M1.598.585,4848,73584,254117,882
2018-12-05$226.08$230.0024.6%8.4%24.5%56.3%29.3%3.4%-0.4%14.1M-397.5M-3.2M1.5812.975,7829,14184,254117,882
2018-12-06$232.96$210.0024.6%6.9%25.8%56.8%24.3%3.2%-0.0%38.0M-704.8M-3.3M0.6518.439,3706,04484,908120,879
2018-12-07$228.44$210.0026.1%7.1%26.6%64.9%25.8%3.9%-0.2%12.0M-452.7M-3.3M0.8720.634,0373,52286,194121,851
2018-12-10$224.22$210.0028.3%7.9%27.2%76.9%27.1%4.4%-0.6%8.5M-313.7M-3.2M0.6912.008,1625,66981,419118,231
2018-12-11$226.37$210.0026.8%7.6%27.3%68.8%25.3%4.2%-0.1%13.6M-397.2M-3.2M0.909.816,8676,16584,602120,496
2018-12-12$228.94$210.0025.6%7.1%27.7%62.0%25.3%4.0%-1.0%22.1M-512.3M-3.2M0.9812.147,8837,69187,110122,637
2018-12-13$226.44$210.0026.0%7.5%27.9%64.2%25.3%4.4%0.3%15.0M-408.4M-3.3M1.0210.6619,31719,69690,588126,938
2018-12-14$205.69$213.0026.0%7.5%43.5%64.5%25.9%3.6%0.3%-43.1M570.8M-2.7M0.7912.9659,49547,108101,746138,903
2018-12-17$200.78$210.0028.5%8.1%43.8%77.9%28.0%4.2%-1.1%-20.2M458.5M-2.9M1.036.9010,41810,76597,446133,617
2018-12-18$203.66$210.0026.7%7.7%44.5%68.4%27.3%4.0%-0.6%-18.5M349.7M-3.0M1.366.349,86613,446100,575135,188
2018-12-19$201.14$210.0026.1%7.5%42.6%64.8%25.8%4.1%-0.2%-23.9M453.5M-3.1M0.996.6811,16311,042104,625140,405
2018-12-20$196.51$203.0028.4%8.2%43.1%77.4%28.2%4.8%-1.1%-26.0M475.7M-3.0M1.6011.4411,69818,752107,093134,873
2018-12-21$195.19$203.0028.6%8.3%42.8%78.5%28.6%4.8%-0.9%-33.4M458.8M-3.0M1.3310.447,4819,962110,358135,303
2018-12-24$191.07$203.0031.8%9.3%43.2%96.5%31.6%4.1%-0.3%-15.1M367.4M-2.9M1.5611.664,5287,06183,03297,068
2018-12-26$197.70$203.0030.1%9.0%44.9%87.2%32.0%4.5%-0.4%-10.3M170.6M-3.0M1.139.909,08410,22184,03098,594
2018-12-27$199.49$202.5030.4%9.0%43.0%88.5%31.9%5.5%-2.4%-6.1M90.0M-3.1M0.837.668,3346,94487,362101,324
2018-12-28$201.58$200.0027.5%8.3%43.2%72.3%28.4%3.1%-0.5%-5.3M2.3M-3.1M0.447.7415,4466,81289,010102,789
2018-12-31$203.49$200.0026.2%7.8%43.5%65.5%27.2%4.0%0.1%-4.2M-48.5M-2.9M0.625.787,9394,88785,89799,544