COST Options History — September 2021

In September 2021, COST traded between $448.32 and $468.20. ATM implied volatility averaged 19.6%, placing in the 25.9% IV rank vs the trailing year. The 30-day expected move averaged 5.5%. IV traded above realized volatility by 4.6% (HV 20d: 14.9%). Max pain ranged from $400.00 to $435.00. Net GEX was positive for 20 of 21 trading days. Term structure was in contango for 5 of 21 days. Put/call ratio averaged 0.78.

Notable Days

  • 2021-09-24: Highest Volume — 92,194 contracts
  • 2021-09-20: Largest IV spike — 17.5% change
  • 2021-09-20: Highest IV Rank — 46.6%
  • 2021-09-20: Largest Expected Move — 6.9%

Monthly Statistics

MetricAvgMinMaxOpenClose
Price$458.45$448.32$468.20$455.76$450.66
Max Pain$420.95$400.00$435.00$435.00$430.00
ATM IV19.6%16.6%23.5%18.5%19.8%
Expected Move5.5%4.0%6.9%4.0%5.8%
HV 20d14.9%11.7%21.9%13.1%21.9%
HV 60d13.2%11.9%16.2%12.0%16.0%
IV Rank25.9%11.7%46.6%15.5%34.6%
IV Percentile39.0%21.0%73.0%29.4%40.5%
Term Structure-0.3%-0.8%0.5%0.1%0.1%
VWIV20.2%14.6%25.0%14.6%20.7%
Skew 25d2.2%1.4%3.2%1.4%2.8%
Skew 10d4.6%2.6%6.7%2.9%4.8%
Call IV 25d19.1%16.3%22.6%18.2%19.2%
Put IV 25d21.3%18.1%25.8%19.6%22.0%
Bid-Ask Spread %56.4444.6666.2250.5650.85
Gamma HHI0.090.050.280.100.05
Net GEX62.1M-7.6M177.0M79.2M-7.6M
Net DEX-2.09B-2.83B-1.20B-2.30B-1.27B
Net VEX-9.5M-10.4M-8.6M-9.1M-10.4M
Div Yield0.0%0.0%0.0%0.0%0.0%
P/C Ratio0.780.441.270.440.93
Total Volume27,854.42912,06392,19415,19612,063
Total OI221,571.476203,813240,019211,639237,221

Daily Data (21 trading days)

DatePriceMax PainATM IVExp MoveHV 20dIV RankVWIVSkew 25dTerm StrGEXDEXVEXP/CSpread %Call VolPut VolCall OIPut OI
2021-09-01$455.76$435.0018.5%4.0%13.1%15.5%14.6%1.4%0.1%79.2M-2.30B-9.1M0.4450.5610,5174,679101,757109,882
2021-09-02$460.40$400.0018.3%5.2%12.2%14.6%18.6%1.7%-0.1%99.8M-2.57B-9.0M0.7155.7617,35712,389102,666112,780
2021-09-03$462.65$405.0018.2%5.1%11.7%14.2%18.6%1.4%-0.3%177.0M-2.82B-8.8M0.8553.7214,22212,068104,803114,236
2021-09-07$459.74$405.0019.0%5.3%12.1%19.0%20.9%1.6%-0.2%80.4M-2.46B-8.6M1.2750.388,57910,88699,088106,570
2021-09-08$465.43$405.0019.6%5.5%12.6%21.7%20.2%1.8%-0.4%96.1M-2.72B-9.0M0.9946.4811,69011,546101,344109,554
2021-09-09$466.92$415.0019.5%5.5%12.6%25.0%19.7%2.0%-0.6%111.5M-2.83B-8.9M0.6344.6620,02112,526104,191113,905
2021-09-10$466.18$415.0019.7%5.5%12.6%26.1%19.8%2.3%-0.7%123.9M-2.78B-9.1M0.6359.3715,3769,754105,941118,060
2021-09-13$459.40$420.0020.1%5.7%13.9%28.2%20.7%2.1%-0.6%55.5M-2.25B-9.4M0.8858.8015,31913,456103,080115,615
2021-09-14$458.60$420.0019.9%5.7%13.4%27.0%20.7%2.2%-0.7%51.2M-2.16B-9.3M0.6655.438,1075,310105,047118,188
2021-09-15$462.18$420.0019.6%5.6%13.6%25.3%20.6%1.7%-0.4%76.4M-2.35B-9.7M0.6859.949,0656,162107,765125,423
2021-09-16$463.47$420.0019.1%5.5%13.1%22.9%20.3%2.2%-0.4%92.7M-2.49B-9.4M0.5365.8012,7086,772108,925127,228
2021-09-17$457.86$420.0020.0%5.7%13.0%27.9%20.6%2.3%-0.2%50.0M-2.09B-9.7M0.8164.3014,72211,870110,711129,308
2021-09-20$448.62$425.0023.5%6.9%14.1%46.6%25.0%3.2%-0.3%5.0M-1.26B-10.1M1.1847.6414,24416,83393,458110,355
2021-09-21$453.51$425.0021.5%6.4%14.4%35.9%23.1%3.0%-0.7%11.4M-1.49B-9.9M0.7855.459,1397,16997,017115,094
2021-09-22$452.53$430.0020.8%6.1%14.1%32.1%21.8%3.0%-0.4%10.8M-1.44B-10.0M0.8262.447,8026,374101,076118,992
2021-09-23$452.55$430.0019.8%5.9%14.1%26.5%21.6%2.3%-0.8%12.4M-1.46B-9.7M1.0259.0225,64026,230103,078121,114
2021-09-24$468.20$430.0016.6%4.7%18.3%11.7%17.4%1.8%0.0%99.6M-2.52B-8.9M0.5957.3957,91634,278105,200123,121
2021-09-27$461.49$430.0017.4%4.8%19.2%17.9%17.2%2.7%0.5%72.6M-2.03B-9.7M0.5658.1126,95815,128101,264116,158
2021-09-28$448.32$430.0020.1%5.8%21.6%36.2%20.8%2.8%0.4%63.8K-1.20B-10.1M0.8062.9817,40013,855104,376117,998
2021-09-29$452.99$430.0019.8%5.7%21.9%34.7%20.5%2.9%-0.1%6.9M-1.40B-10.1M0.6366.2211,5777,236109,394122,018
2021-09-30$450.66$430.0019.8%5.8%21.9%34.6%20.7%2.8%0.1%-7.6M-1.27B-10.4M0.9350.856,2505,813112,254124,967