SPY Options History — October 2017

In October 2017, SPY traded between $252.19 and $257.51. ATM implied volatility averaged 7.3%, placing in the 9.4% IV rank vs the trailing year. The 30-day expected move averaged 2.1%. IV traded above realized volatility by 3.1% (HV 20d: 4.2%). Max pain ranged from $249.00 to $254.00. Net GEX was positive for 20 of 22 trading days. Term structure was in contango for 15 of 22 days. Put/call ratio averaged 1.74.

Notable Days

  • 2017-10-25: Highest Volume — 3,576,706 contracts
  • 2017-10-30: Largest IV spike — 29.2% change
  • 2017-10-25: Highest IV Rank — 21.6%
  • 2017-10-25: Largest Expected Move — 2.6%

Monthly Statistics

MetricAvgMinMaxOpenClose
Price$255.17$252.19$257.51$252.19$257.14
Max Pain$251.50$249.00$254.00$249.00$254.00
ATM IV7.3%6.4%8.9%7.9%8.1%
Expected Move2.1%1.8%2.6%1.8%2.2%
HV 20d4.2%3.4%6.0%6.0%4.3%
HV 60d6.6%6.5%6.7%6.7%6.7%
IV Rank9.4%3.0%21.6%14.1%15.9%
IV Percentile14.0%0.4%49.2%20.6%33.7%
Term Structure0.1%-0.8%1.0%-0.8%-0.8%
VWIV8.5%6.9%10.2%6.9%10.0%
Skew 25d3.4%2.5%4.7%3.0%3.7%
Skew 10d6.5%4.6%8.8%5.4%6.7%
Call IV 25d6.0%5.5%6.7%6.0%6.2%
Put IV 25d9.5%8.2%11.4%9.0%9.9%
Bid-Ask Spread %2.371.313.422.021.35
Gamma HHI0.080.040.230.060.04
Net GEX6.08B-5.06B15.24B9.25B3.22B
Net DEX-48.21B-71.48B-16.98B-42.06B-38.84B
Net VEX-411.7M-460.4M-381.4M-399.2M-432.6M
Div Yield0.0%0.0%0.0%0.0%0.0%
P/C Ratio1.741.202.851.531.99
Total Volume2,439,350.2731,722,2183,576,7062,510,9731,722,218
Total OI23,839,550.18221,168,01826,712,27021,168,01823,970,595

Daily Data (22 trading days)

DatePriceMax PainATM IVExp MoveHV 20dIV RankVWIVSkew 25dTerm StrGEXDEXVEXP/CSpread %Call WallPut WallCall VolPut VolCall OIPut OI
2017-10-02$252.19$249.007.9%1.8%6.0%14.1%6.9%3.0%-0.8%9.25B-42.06B-399.2M1.532.02N/AN/A990,5061,520,4676,664,28414,503,734
2017-10-03$252.75$249.506.7%1.9%5.0%4.9%7.1%2.8%1.0%10.99B-48.00B-398.4M1.441.81N/AN/A913,9231,317,8646,923,26614,856,319
2017-10-04$253.07$249.506.9%1.8%4.9%6.3%7.4%3.1%-0.6%15.24B-51.46B-405.3M1.872.07N/AN/A944,5651,767,3907,173,92815,209,733
2017-10-05$254.59$250.006.4%2.1%5.2%3.0%8.5%2.5%0.1%11.65B-66.20B-381.4M1.802.65N/AN/A1,167,8712,099,0687,105,50415,320,405
2017-10-06$254.32$250.006.6%2.2%5.1%4.3%9.0%2.7%-0.2%5.93B-60.99B-391.8M2.192.70N/AN/A1,013,4002,215,7427,356,87516,129,989
2017-10-09$253.89$250.006.8%2.2%4.1%5.6%8.3%3.0%0.6%3.22B-42.24B-410.5M1.283.05N/AN/A894,7811,147,3627,039,13115,875,034
2017-10-10$254.46$250.007.1%2.2%4.0%8.0%8.7%2.9%0.6%5.71B-50.78B-402.2M1.612.92N/AN/A757,7841,219,2567,346,55716,156,283
2017-10-11$254.96$250.006.8%2.1%4.1%6.1%9.3%3.1%0.2%9.19B-56.49B-405.7M1.722.61N/AN/A761,4851,311,5887,506,49016,620,056
2017-10-12$254.55$251.006.8%2.1%4.1%6.1%8.4%3.2%0.2%5.53B-50.08B-409.3M1.593.30N/AN/A756,5921,205,0347,529,57016,731,787
2017-10-13$254.80$251.006.6%2.0%3.8%4.4%8.8%3.1%0.3%5.62B-53.90B-400.1M1.673.23N/AN/A850,0431,416,6147,608,99417,068,808
2017-10-16$255.30$251.006.8%2.0%3.8%6.2%8.1%3.3%0.3%7.70B-56.43B-392.4M2.533.11N/AN/A549,7201,392,8797,443,60516,696,703
2017-10-17$255.47$252.007.1%2.1%3.8%8.5%9.4%3.5%0.3%6.89B-56.97B-398.0M2.853.04N/AN/A478,5741,366,1137,566,06317,391,914
2017-10-18$255.63$252.006.8%1.9%3.8%5.7%7.9%3.4%0.4%6.15B-59.23B-392.9M1.783.42N/AN/A759,5941,354,0927,668,13617,942,959
2017-10-19$255.62$252.007.0%2.0%3.4%7.4%8.3%3.6%0.5%5.37B-54.67B-401.0M2.203.30N/AN/A917,1792,019,7837,683,01818,117,939
2017-10-20$256.82$252.007.2%1.9%3.7%8.8%8.2%3.3%1.0%13.98B-71.48B-399.6M1.443.24N/AN/A1,454,9672,098,6547,888,85418,823,416
2017-10-23$256.09$253.007.7%2.3%3.7%12.8%8.2%3.8%-0.1%1.46B-31.62B-426.6M1.201.63N/AN/A1,390,7121,665,8796,851,48715,235,555
2017-10-24$256.37$253.007.9%2.3%3.7%14.3%9.3%4.5%0.1%1.16B-34.47B-440.2M1.371.37N/AN/A765,8151,052,7337,549,27516,074,010
2017-10-25$255.35$253.008.9%2.6%4.0%21.6%10.2%4.7%0.1%-5.06B-16.98B-460.4M1.701.38N/AN/A1,325,2912,251,4157,798,57416,457,488
2017-10-26$255.83$253.008.4%2.5%4.0%18.0%9.3%4.5%0.7%-297.6M-27.78B-452.1M1.621.34N/AN/A734,5221,189,2917,900,30316,473,707
2017-10-27$257.51$254.006.7%2.1%4.3%5.2%8.4%3.6%-0.8%7.82B-51.54B-431.2M1.521.37N/AN/A1,149,9391,749,7687,981,46316,840,087
2017-10-30$257.01$254.008.7%2.2%4.4%20.0%8.5%3.9%-0.8%2.97B-38.42B-426.3M1.291.31N/AN/A873,8561,131,3777,734,67715,653,529
2017-10-31$257.14$254.008.1%2.2%4.3%15.9%10.0%3.7%-0.8%3.22B-38.84B-432.6M1.991.35N/AN/A576,3641,145,8547,987,29415,983,301