COST Options History — October 2021

In October 2021, COST traded between $440.48 and $491.87. ATM implied volatility averaged 17.3%, placing in the 18.1% IV rank vs the trailing year. The 30-day expected move averaged 5.0%. IV traded below realized volatility by 4.1% (HV 20d: 21.4%). Max pain ranged from $430.00 to $460.00. Net GEX was positive for 15 of 21 trading days. Term structure was in contango for 13 of 21 days. Put/call ratio averaged 0.63.

Notable Days

  • 2021-10-25: Highest Volume — 56,320 contracts
  • 2021-10-04: Largest IV spike — 13.0% change
  • 2021-10-04: Highest IV Rank — 46.0%
  • 2021-10-04: Largest Expected Move — 6.0%

Monthly Statistics

MetricAvgMinMaxOpenClose
Price$463.60$440.48$491.87$448.82$491.87
Max Pain$454.17$430.00$460.00$430.00$460.00
ATM IV17.3%14.5%21.5%19.0%17.1%
Expected Move5.0%4.2%6.0%5.5%5.0%
HV 20d21.4%16.5%23.4%21.6%16.5%
HV 60d17.0%16.1%17.7%16.1%17.3%
IV Rank18.1%0.0%46.0%28.9%17.4%
IV Percentile24.0%0.0%59.5%34.5%28.6%
Term Structure0.1%-0.8%1.0%0.0%0.5%
VWIV18.2%15.2%21.3%20.1%18.7%
Skew 25d2.3%1.5%3.2%2.9%2.2%
Skew 10d4.7%2.1%6.6%5.4%3.6%
Call IV 25d16.7%14.1%20.3%18.6%16.2%
Put IV 25d18.9%16.1%23.4%21.6%18.3%
Bid-Ask Spread %44.5432.0861.6561.6533.57
Gamma HHI0.100.060.350.070.16
Net GEX52.3M-35.9M124.5M-35.9M104.9M
Net DEX-1.74B-2.62B-796.9M-1.13B-2.38B
Net VEX-9.3M-10.1M-8.6M-10.1M-9.4M
Div Yield0.0%0.0%0.0%0.0%0.0%
P/C Ratio0.630.340.880.880.50
Total Volume27,568.4769,38056,32029,47835,537
Total OI211,458.667167,811240,266240,266202,921

Daily Data (21 trading days)

DatePriceMax PainATM IVExp MoveHV 20dIV RankVWIVSkew 25dTerm StrGEXDEXVEXP/CSpread %Call VolPut VolCall OIPut OI
2021-10-01$448.82$430.0019.0%5.5%21.6%28.9%20.1%2.9%0.0%-35.9M-1.13B-10.1M0.8861.6515,69113,787113,795126,471
2021-10-04$440.48$455.0021.5%6.0%22.3%46.0%21.3%3.2%-0.4%-19.2M-796.9M-10.1M0.7446.1811,9818,922103,248116,799
2021-10-05$447.32$455.0019.6%5.6%23.2%33.3%20.0%2.5%0.0%-10.2M-1.15B-9.9M0.6646.498,4925,570105,773119,267
2021-10-06$447.98$455.0019.6%5.6%22.6%33.2%21.0%3.0%-0.8%-3.1M-1.23B-9.7M0.7243.715,4663,914108,008120,985
2021-10-07$452.93$455.0018.6%5.3%23.0%25.7%19.4%2.3%-0.0%28.1M-1.61B-9.5M0.7844.5614,79611,482109,714122,231
2021-10-08$452.26$455.0018.0%5.3%23.0%22.1%18.8%2.4%-0.1%59.1M-1.52B-9.8M0.6643.189,7836,503111,715123,016
2021-10-11$450.78$455.0018.1%5.2%22.5%22.9%18.2%2.4%-0.0%11.1M-1.40B-9.3M0.6241.4410,2566,331104,354117,640
2021-10-12$446.53$455.0018.3%5.2%22.7%23.9%18.2%2.7%0.1%-9.6M-1.14B-9.4M0.5742.289,6115,504105,934118,741
2021-10-13$445.35$455.0017.3%5.0%22.5%16.7%17.8%2.4%0.1%-20.9M-1.11B-8.9M0.7052.067,9145,535109,220120,188
2021-10-14$449.54$455.0015.6%4.6%22.8%5.3%16.5%2.1%0.4%26.8M-1.41B-9.1M0.8347.819,0647,558111,761122,425
2021-10-15$450.46$450.0014.5%4.2%22.4%0.0%15.2%1.9%0.3%124.5M-1.55B-8.8M0.8838.939,7688,559113,219123,451
2021-10-18$462.12$450.0015.4%4.4%23.0%6.6%16.3%2.1%0.1%52.7M-1.52B-8.7M0.5834.6920,70512,01279,74188,070
2021-10-19$466.23$450.0015.2%4.4%22.9%5.3%16.3%2.2%-0.2%65.7M-1.74B-8.6M0.6332.0814,0478,84781,27890,367
2021-10-20$469.50$455.0015.7%4.5%23.0%8.1%16.7%1.9%1.0%96.0M-1.97B-9.2M0.6046.3523,84414,22489,97797,217
2021-10-21$476.60$455.0015.9%4.6%23.4%9.6%17.3%1.8%-0.6%113.2M-2.37B-9.0M0.7249.8523,88717,28093,17999,698
2021-10-22$482.26$455.0016.5%4.7%20.6%13.9%18.0%2.0%-0.0%117.1M-2.62B-9.3M0.5749.2630,63617,41296,709104,399
2021-10-25$490.04$457.5016.8%4.9%20.4%16.1%18.0%1.5%0.4%93.2M-2.60B-8.9M0.3748.9941,07815,24290,66698,128
2021-10-26$485.90$460.0016.6%4.9%17.1%14.1%17.8%1.7%0.6%90.9M-2.41B-9.3M0.4551.0425,15311,35596,828100,919
2021-10-27$489.65$460.0016.8%4.9%17.0%16.0%18.3%2.0%0.2%112.5M-2.59B-9.4M0.3444.7831,63910,59898,728103,001
2021-10-28$489.04$460.0016.8%4.9%16.8%15.5%18.5%2.2%0.6%100.0M-2.27B-9.4M0.4736.4219,7289,22795,692105,159
2021-10-29$491.87$460.0017.1%5.0%16.5%17.4%18.7%2.2%0.5%104.9M-2.38B-9.4M0.5033.5723,72111,81695,902107,019