SPY Options History — October 2020

In October 2020, SPY traded between $324.62 and $352.73. ATM implied volatility averaged 25.6%, placing in the 24.7% IV rank vs the trailing year. The 30-day expected move averaged 7.5%. IV traded above realized volatility by 5.9% (HV 20d: 19.7%). Max pain ranged from $325.00 to $333.00. Net GEX was positive for 15 of 22 trading days. Term structure was in contango for 11 of 22 days. Put/call ratio averaged 1.31.

Notable Days

  • 2020-10-28: Highest Volume — 6,153,143 contracts
  • 2020-10-28: Largest IV spike — 19.4% change
  • 2020-10-28: Highest IV Rank — 37.2%
  • 2020-10-28: Largest Expected Move — 10.3%

Monthly Statistics

MetricAvgMinMaxOpenClose
Price$341.21$324.62$352.73$335.88$324.62
Max Pain$329.77$325.00$333.00$330.00$332.00
ATM IV25.6%21.1%34.1%23.4%33.1%
Expected Move7.5%6.1%10.3%6.8%10.2%
HV 20d19.7%15.7%25.8%25.8%22.1%
HV 60d18.5%17.5%20.5%17.5%20.5%
IV Rank24.7%18.2%37.2%21.5%35.7%
IV Percentile69.1%51.6%86.5%65.1%85.3%
Term Structure0.0%-1.3%2.6%-0.2%0.1%
VWIV28.3%24.7%37.3%25.0%37.0%
Skew 25d9.4%7.6%12.3%7.6%12.2%
Skew 10d16.8%12.5%23.6%12.5%22.4%
Call IV 25d21.3%18.0%27.4%20.3%26.4%
Put IV 25d30.7%26.1%39.7%27.9%38.6%
Bid-Ask Spread %1.291.101.751.111.75
Gamma HHI0.030.020.050.020.04
Net GEX1.07B-4.32B6.46B1.09B-4.32B
Net DEX-49.28B-118.44B37.14B-39.67B37.14B
Net VEX-685.7M-709.4M-658.7M-707.1M-698.9M
Div Yield0.0%0.0%0.0%0.0%0.0%
P/C Ratio1.310.971.611.251.41
Total Volume3,583,588.52,574,4656,153,1432,928,3785,183,865
Total OI21,161,557.36419,601,12123,079,39320,187,79822,211,541

Daily Data (22 trading days)

DatePriceMax PainATM IVExp MoveHV 20dIV RankVWIVSkew 25dTerm StrGEXDEXVEXP/CSpread %Call WallPut WallCall VolPut VolCall OIPut OI
2020-10-01$335.88$330.0023.4%6.8%25.8%21.5%25.0%7.6%-0.2%1.09B-39.67B-707.1M1.251.11N/AN/A1,300,1141,628,2647,712,25212,475,546
2020-10-02$334.77$330.0023.0%6.5%21.9%20.9%24.7%7.7%2.6%254.3M-32.74B-709.4M1.451.10N/AN/A1,786,7972,589,9328,021,01812,857,206
2020-10-05$339.54$325.0024.9%7.5%22.6%23.8%29.4%8.4%1.3%3.60B-58.33B-686.3M1.391.20N/AN/A1,286,9881,791,9377,978,35812,596,405
2020-10-06$335.25$325.0026.7%7.7%20.9%26.4%30.0%9.0%1.2%252.8M-33.92B-696.7M1.451.64N/AN/A1,424,1472,071,4787,940,55512,546,723
2020-10-07$341.05$325.0025.3%7.2%20.7%24.2%27.9%8.9%-0.2%4.43B-65.85B-686.7M1.401.23N/AN/A1,386,7401,941,2428,163,24612,996,808
2020-10-08$343.57$325.0023.4%6.7%19.8%21.5%28.7%8.3%-0.2%4.36B-76.51B-685.7M1.521.13N/AN/A1,046,3271,589,8708,176,58813,240,812
2020-10-09$346.51$325.0021.3%6.2%19.9%18.5%26.6%8.0%0.2%6.46B-94.74B-669.6M1.231.21N/AN/A1,744,3312,152,1678,335,92013,710,600
2020-10-12$352.73$328.0021.1%6.1%20.1%18.2%25.0%8.3%0.2%6.37B-118.44B-658.7M1.071.19N/AN/A2,037,9452,189,0908,212,54713,631,147
2020-10-13$351.10$330.0022.3%6.4%20.2%19.9%24.7%8.6%0.1%3.03B-101.23B-672.3M1.351.30N/AN/A1,093,6591,480,8068,295,36414,050,388
2020-10-14$348.74$330.0022.7%6.5%20.4%20.5%24.8%8.9%-0.2%1.02B-86.42B-673.7M1.171.22N/AN/A1,519,4131,776,9438,471,97214,306,308
2020-10-15$347.65$331.0023.3%6.7%19.5%21.3%25.5%9.0%-0.6%1.97B-81.56B-675.8M1.141.24N/AN/A1,391,4501,583,2668,412,28214,145,500
2020-10-16$348.46$331.0023.1%6.7%19.0%21.1%25.6%8.8%0.2%3.19B-87.36B-671.7M0.971.16N/AN/A1,589,7811,540,6748,711,76514,367,628
2020-10-19$342.11$331.0026.2%7.4%19.1%25.7%27.3%9.7%-0.5%-1.54B-34.78B-681.7M1.241.36N/AN/A1,819,5552,253,3167,544,70912,056,412
2020-10-20$344.54$331.0025.5%7.3%18.5%24.6%26.1%9.5%0.2%711.8M-47.89B-687.4M1.081.27N/AN/A1,493,6641,620,5077,597,61512,157,375
2020-10-21$343.11$331.0025.7%7.4%16.3%24.9%26.2%9.5%-0.9%-835.4M-41.88B-684.0M1.291.35N/AN/A1,493,4821,923,0837,885,51512,441,457
2020-10-22$344.71$331.0024.7%7.1%16.3%23.4%27.0%9.5%-0.5%703.2M-51.09B-678.5M1.371.29N/AN/A1,174,6871,612,3257,858,99112,331,524
2020-10-23$345.48$333.0024.2%7.0%15.7%22.7%25.0%9.2%0.2%1.50B-55.23B-672.1M1.431.27N/AN/A1,176,7341,677,7548,008,64212,671,033
2020-10-26$337.89$333.0028.8%8.7%17.0%29.5%32.1%10.5%0.2%-2.20B-17.76B-687.3M1.391.45N/AN/A2,105,7352,933,8457,790,15312,462,994
2020-10-27$338.93$333.0028.6%8.5%16.9%29.1%30.8%10.9%-0.5%-976.5M-24.80B-693.4M1.321.18N/AN/A1,139,1631,509,3127,927,05212,642,208
2020-10-28$328.28$333.0034.1%10.3%20.4%37.2%37.3%12.3%-1.3%-4.03B27.11B-704.0M1.611.33N/AN/A2,361,7753,791,3688,163,84312,922,530
2020-10-29$331.79$332.0031.4%9.6%20.8%33.1%35.3%11.9%-0.6%-1.53B1.77B-703.9M1.331.31N/AN/A1,552,9132,072,5038,503,66513,020,065
2020-10-30$324.62$332.0033.1%10.2%22.1%35.7%37.0%12.2%0.1%-4.32B37.14B-698.9M1.411.75N/AN/A2,147,3873,036,4788,771,23413,440,307