COST Options History — May 2020

In May 2020, COST traded between $297.96 and $310.62. ATM implied volatility averaged 29.7%, placing in the 25.5% IV rank vs the trailing year. The 30-day expected move averaged 8.2%. IV traded above realized volatility by 7.1% (HV 20d: 22.5%). Max pain ranged from $300.00 to $305.00. Net GEX was positive for 15 of 20 trading days. Term structure was in contango for 7 of 20 days. Put/call ratio averaged 0.64.

Notable Days

  • 2020-05-28: Highest Volume — 107,575 contracts
  • 2020-05-29: Largest IV drop — 21.3% change
  • 2020-05-04: Highest IV Rank — 32.3%
  • 2020-05-04: Largest Expected Move — 9.0%

Monthly Statistics

MetricAvgMinMaxOpenClose
Price$304.77$297.96$310.62$302.24$306.84
Max Pain$301.88$300.00$305.00$305.00$305.00
ATM IV29.7%20.5%33.9%33.2%20.5%
Expected Move8.2%6.0%9.0%8.3%6.0%
HV 20d22.5%15.4%34.4%34.4%16.0%
HV 60d39.8%31.6%41.7%41.3%31.6%
IV Rank25.5%11.0%32.3%31.2%11.0%
IV Percentile79.0%44.0%88.9%88.9%44.0%
Term Structure-0.8%-4.7%2.2%-0.9%0.5%
VWIV29.3%22.0%32.5%29.0%22.0%
Skew 25d5.2%2.8%10.8%4.1%2.8%
Skew 10d8.7%-2.7%16.7%12.6%-2.5%
Call IV 25d27.3%19.5%32.8%32.8%19.5%
Put IV 25d32.5%22.3%38.0%36.9%22.3%
Bid-Ask Spread %35.7110.1850.6610.1840.67
Gamma HHI0.070.050.130.100.13
Net GEX25.3M-22.6M82.9M-18.9M75.8M
Net DEX-370.0M-870.3M68.1M-167.2M-552.4M
Net VEX-6.3M-6.7M-5.9M-6.5M-6.0M
Div Yield0.0%0.0%0.0%0.0%0.0%
P/C Ratio0.640.241.070.890.68
Total Volume37,323.919,341107,57519,50698,779
Total OI205,126.05177,203276,253187,631276,253

Daily Data (20 trading days)

DatePriceMax PainATM IVExp MoveHV 20dIV RankVWIVSkew 25dTerm StrGEXDEXVEXP/CSpread %Call VolPut VolCall OIPut OI
2020-05-01$302.24$305.0033.2%8.3%34.4%31.2%29.0%4.1%-0.9%-18.9M-167.2M-6.5M0.8910.1810,3119,19594,38393,248
2020-05-04$305.37$300.0033.9%9.0%34.3%32.3%32.1%6.1%-2.3%13.1M-317.0M-6.4M0.8314.4210,5458,79688,73388,470
2020-05-05$307.90$300.0033.4%8.5%28.4%31.5%31.2%3.5%-1.6%24.9M-433.3M-6.4M0.6615.8113,0658,65191,81992,752
2020-05-06$309.08$300.0033.1%8.6%28.3%31.1%32.5%5.5%-2.4%32.3M-515.5M-6.4M0.6714.7013,7849,24295,36594,556
2020-05-07$306.72$300.0031.3%8.4%28.4%28.2%31.1%6.3%-0.6%26.9M-376.1M-6.3M1.0711.5912,51413,38698,44098,296
2020-05-08$305.38$300.0029.9%8.1%27.6%26.0%28.3%5.9%-1.1%-19.0M-292.3M-6.1M0.9038.3614,99913,56399,25599,678
2020-05-11$310.62$300.0029.5%7.9%28.1%25.3%28.2%7.3%-1.9%31.5M-561.7M-6.1M0.6739.8513,0308,67792,46992,941
2020-05-12$305.69$300.0027.6%7.7%24.0%22.3%27.6%8.2%-1.1%13.1M-307.7M-5.9M0.9342.2114,14813,21495,61993,299
2020-05-13$300.54$300.0031.2%8.5%24.6%28.0%30.7%10.8%-1.0%-13.7M-40.4M-6.2M0.7649.5313,24710,03798,91497,862
2020-05-14$299.38$300.0031.9%8.7%21.2%29.0%31.5%3.3%-2.0%-22.6M28.0M-6.3M0.6649.9122,10614,529102,764100,718
2020-05-15$297.96$300.0032.0%8.5%20.9%29.3%30.1%5.2%-4.7%-7.7M68.1M-6.2M0.6240.8819,66112,209106,419102,484
2020-05-18$302.95$300.0028.9%8.2%21.7%24.3%28.6%5.6%1.6%24.7M-323.3M-6.2M0.4830.8720,7359,88790,08187,857
2020-05-19$305.97$300.0028.9%8.2%18.4%24.3%28.6%4.8%2.2%49.9M-538.1M-6.5M0.2438.5249,57811,77196,75991,359
2020-05-20$304.90$305.0028.3%8.1%16.0%23.4%28.5%4.4%0.4%51.4M-476.6M-6.6M0.2848.0524,3356,704118,34895,333
2020-05-21$302.26$305.0029.1%8.3%15.8%24.7%29.4%4.5%1.0%44.0M-354.8M-6.5M0.4250.3615,8166,659123,93197,888
2020-05-22$302.91$305.0029.4%8.4%15.5%25.1%30.0%3.4%0.5%29.8M-405.8M-6.7M0.5737.0820,53511,707127,070100,390
2020-05-26$304.38$305.0027.4%8.0%15.6%21.9%28.8%4.2%0.6%37.6M-450.1M-6.4M0.4750.1830,93014,499116,75994,177
2020-05-27$304.86$305.0027.4%8.0%15.4%22.0%28.8%5.7%-0.9%50.3M-514.3M-6.6M0.4250.6626,86511,194129,65899,836
2020-05-28$309.43$302.5026.1%7.7%16.3%19.8%28.4%2.8%-1.5%82.9M-870.3M-6.7M0.5740.3868,33339,242135,638102,700
2020-05-29$306.84$305.0020.5%6.0%16.0%11.0%22.0%2.8%0.5%75.8M-552.4M-6.0M0.6840.6758,86039,919156,280119,973