COST Options History — September 2019

In September 2019, COST traded between $286.18 and $304.01. ATM implied volatility averaged 25.1%, placing in the 63.0% IV rank vs the trailing year. The 30-day expected move averaged 7.1%. IV traded above realized volatility by 1.1% (HV 20d: 24.0%). Max pain ranged from $265.00 to $280.00. Net GEX was positive for 13 of 20 trading days. Term structure was in contango for 0 of 20 days. Put/call ratio averaged 0.88.

Notable Days

  • 2019-09-06: Highest Volume — 61,449 contracts
  • 2019-09-24: Largest IV spike — 5.8% change
  • 2019-09-27: Highest IV Rank — 76.3%
  • 2019-09-30: Largest Expected Move — 8.9%

Monthly Statistics

MetricAvgMinMaxOpenClose
Price$291.54$286.18$304.01$292.46$288.32
Max Pain$272.25$265.00$280.00$280.00$275.00
ATM IV25.1%23.9%27.5%25.5%27.3%
Expected Move7.1%5.6%8.9%6.1%8.9%
HV 20d24.0%15.9%27.9%26.1%16.1%
HV 60d19.6%18.4%20.2%18.4%19.9%
IV Rank63.0%56.2%76.3%65.0%74.9%
IV Percentile86.8%79.8%96.8%90.1%96.0%
Term Structure-0.9%-1.4%-0.6%-1.0%-1.0%
VWIV25.0%19.9%31.3%21.9%31.3%
Skew 25d3.7%3.3%4.3%4.3%3.6%
Skew 10d7.7%6.5%8.9%8.3%8.8%
Call IV 25d23.4%22.1%26.0%23.9%25.3%
Put IV 25d27.1%25.7%30.0%28.2%28.9%
Bid-Ask Spread %5.103.279.187.307.92
Gamma HHI0.150.070.570.100.07
Net GEX2.1M-99.9M89.4M35.2M20.7M
Net DEX-834.2M-1.62B-432.5M-1.00B-734.8M
Net VEX-4.8M-5.3M-4.2M-4.5M-5.1M
Div Yield0.0%0.0%0.0%0.0%0.0%
P/C Ratio0.880.391.731.030.74
Total Volume28,233.0513,08561,44918,59928,974
Total OI191,078.15165,429225,611165,429187,630

Daily Data (20 trading days)

DatePriceMax PainATM IVExp MoveHV 20dIV RankVWIVSkew 25dTerm StrGEXDEXVEXP/CSpread %Call VolPut VolCall OIPut OI
2019-09-03$292.46$280.0025.5%6.1%26.1%65.0%21.9%4.3%-1.0%35.2M-1.00B-4.5M1.037.309,1739,42680,83384,596
2019-09-04$295.89$280.0024.9%5.6%26.0%61.6%19.9%4.0%-0.9%42.3M-1.17B-4.3M0.639.189,0735,70082,11389,291
2019-09-05$297.60$265.0024.6%6.6%25.5%60.3%23.9%3.8%-0.6%54.7M-1.26B-4.4M0.644.9613,9298,94084,50390,828
2019-09-06$304.01$265.0023.9%6.5%26.2%56.2%23.2%3.4%-0.9%89.4M-1.62B-4.2M0.393.2744,05917,39088,07992,798
2019-09-09$299.58$270.0024.6%6.7%27.1%60.4%23.8%3.5%-0.9%46.7M-1.25B-4.3M0.493.7330,06914,70784,21987,950
2019-09-10$295.49$270.0025.0%6.8%27.2%62.4%24.7%3.4%-1.1%31.4M-1.00B-4.7M1.003.6914,86014,91792,14092,432
2019-09-11$290.36$270.0025.7%7.0%27.9%65.9%24.7%3.8%-1.4%467.4K-709.5M-4.7M0.857.7323,76120,18393,530100,036
2019-09-12$290.24$270.0024.9%6.8%25.7%61.8%24.0%3.3%-1.2%-4.1M-743.2M-4.8M1.733.9013,77623,79699,433106,101
2019-09-13$291.59$270.0024.1%6.8%25.4%57.2%23.5%3.6%-0.8%-33.4M-731.4M-5.1M0.953.9118,82917,878103,406122,205
2019-09-16$288.76$270.0024.7%7.0%25.8%60.5%24.8%3.7%-0.7%-57.7M-432.5M-5.0M1.733.677,79713,45491,579113,772
2019-09-17$291.03$270.0024.4%6.9%25.9%58.8%24.3%3.7%-0.7%-56.5M-676.4M-5.0M0.754.568,0996,08793,066115,009
2019-09-18$292.14$270.0024.1%6.9%25.7%57.3%24.0%3.6%-0.9%-45.9M-793.6M-4.7M1.006.0712,66212,67194,682115,190
2019-09-19$287.50$270.0024.3%7.0%26.5%58.6%24.1%3.4%-0.7%-61.9M-484.7M-4.8M0.943.9622,03920,69597,016110,686
2019-09-20$287.06$275.0024.2%7.1%26.0%58.1%24.2%3.7%-1.4%-99.9M-561.6M-5.0M1.424.718,95712,746103,103111,455
2019-09-23$287.90$275.0024.8%7.3%24.5%61.2%26.2%3.6%-0.7%19.2M-707.2M-4.9M0.714.448,7006,21282,63285,895
2019-09-24$287.47$275.0026.2%7.9%24.2%69.1%27.3%3.8%-0.8%17.1M-698.1M-5.1M0.474.0917,4688,25487,78291,109
2019-09-25$288.70$275.0025.7%7.8%16.3%66.1%27.1%3.8%-0.7%22.4M-768.4M-5.0M0.554.118,4304,65590,39593,201
2019-09-26$288.46$275.0026.0%8.0%16.0%68.1%26.7%3.9%-1.0%18.3M-760.8M-5.1M0.685.6812,8258,75492,20094,227
2019-09-27$286.18$275.0027.5%8.5%15.9%76.3%29.5%4.0%-1.2%3.0M-581.5M-5.3M0.875.0813,19311,52396,47799,964
2019-09-30$288.32$275.0027.3%8.9%16.1%74.9%31.3%3.6%-1.0%20.7M-734.8M-5.1M0.747.9216,65712,31791,67395,957