SPY Options History — August 2017

In August 2017, SPY traded between $243.06 and $247.81. ATM implied volatility averaged 9.1%, placing in the 22.5% IV rank vs the trailing year. The 30-day expected move averaged 2.7%. IV traded above realized volatility by 2.3% (HV 20d: 6.8%). Max pain ranged from $244.00 to $245.00. Net GEX was positive for 6 of 23 trading days. Term structure was in contango for 12 of 23 days. Put/call ratio averaged 1.92.

Notable Days

  • 2017-08-10: Highest Volume — 4,964,853 contracts
  • 2017-08-08: Largest IV spike — 41.8% change
  • 2017-08-17: Highest IV Rank — 46.0%
  • 2017-08-11: Largest Expected Move — 3.5%

Monthly Statistics

MetricAvgMinMaxOpenClose
Price$245.70$243.06$247.81$247.25$247.45
Max Pain$244.65$244.00$245.00$245.00$245.00
ATM IV9.1%6.0%12.1%7.8%8.2%
Expected Move2.7%1.9%3.5%2.0%2.4%
HV 20d6.8%3.3%9.2%6.1%9.2%
HV 60d7.1%6.5%7.4%6.9%7.4%
IV Rank22.5%0.0%46.0%8.7%16.5%
IV Percentile37.3%0.0%83.7%11.1%21.4%
Term Structure0.1%-1.2%1.2%-0.9%0.3%
VWIV10.7%7.8%13.5%7.8%8.8%
Skew 25d4.9%3.5%6.9%3.5%3.9%
Skew 10d9.3%6.4%14.3%6.4%7.7%
Call IV 25d7.1%5.7%9.4%5.8%6.6%
Put IV 25d12.0%9.4%15.8%9.4%10.5%
Bid-Ask Spread %2.401.703.561.901.87
Gamma HHI0.050.030.080.060.05
Net GEX-3.33B-12.51B3.45B3.44B2.73B
Net DEX6.97B-25.24B49.30B-23.72B-17.70B
Net VEX-453.5M-503.4M-398.8M-399.6M-443.0M
Div Yield0.0%0.0%0.0%0.0%0.0%
P/C Ratio1.921.462.261.891.46
Total Volume2,683,323.4781,472,3694,964,8531,610,1463,082,173
Total OI22,602,721.08719,841,51526,000,83819,841,51523,179,147

Daily Data (23 trading days)

DatePriceMax PainATM IVExp MoveHV 20dIV RankVWIVSkew 25dTerm StrGEXDEXVEXP/CSpread %Call WallPut WallCall VolPut VolCall OIPut OI
2017-08-01$247.25$245.007.8%2.0%6.1%8.7%7.8%3.5%-0.9%3.44B-23.72B-399.6M1.891.90N/AN/A556,4911,053,6556,110,98113,730,534
2017-08-02$247.27$245.007.2%1.9%6.0%4.2%7.9%3.7%1.2%3.32B-20.87B-419.0M1.812.74N/AN/A815,8561,472,7066,293,44314,016,026
2017-08-03$246.92$244.007.8%2.4%4.6%8.4%10.4%4.2%1.0%467.7M-13.64B-427.6M2.201.82N/AN/A537,5421,185,2486,254,54814,176,756
2017-08-04$247.23$244.007.9%2.4%4.1%9.3%10.1%3.9%1.1%1.25B-20.52B-417.9M2.011.75N/AN/A804,9121,616,6866,340,89814,577,030
2017-08-07$247.81$244.006.0%2.3%4.1%0.0%9.2%3.6%1.2%3.45B-25.24B-398.8M1.971.70N/AN/A533,1751,050,7406,084,69714,368,963
2017-08-08$247.26$244.008.6%2.6%4.1%19.0%10.1%4.3%-1.2%-26.5M-14.72B-419.8M1.991.79N/AN/A1,074,0442,131,9256,283,19414,794,072
2017-08-09$247.14$244.008.6%2.7%3.3%19.8%11.1%4.9%0.1%-2.50B-9.26B-444.8M1.921.78N/AN/A1,204,9882,318,2486,532,70715,496,340
2017-08-10$243.95$244.0011.7%3.5%5.8%42.5%12.6%6.6%-0.3%-9.33B39.64B-496.3M1.672.29N/AN/A1,858,9283,105,9256,692,19215,892,611
2017-08-11$244.28$244.0011.8%3.5%5.5%43.4%13.1%6.9%-0.3%-7.65B31.11B-503.4M2.132.03N/AN/A1,207,3422,571,8437,205,43416,593,517
2017-08-14$246.52$244.008.4%2.6%6.4%17.9%11.0%5.0%0.8%-2.27B-4.61B-460.8M2.192.50N/AN/A824,3591,807,1426,934,19916,581,899
2017-08-15$246.83$245.008.5%2.6%6.4%18.9%11.1%5.3%0.8%-1.08B-10.30B-454.2M2.072.22N/AN/A714,2301,478,8147,101,16716,982,361
2017-08-16$246.83$245.008.8%2.5%6.1%21.3%10.5%4.6%-0.3%-993.7M-9.20B-448.4M2.092.30N/AN/A946,7191,974,0317,296,39017,390,430
2017-08-17$243.47$245.0012.1%3.5%7.8%46.0%13.5%6.4%-0.5%-11.11B48.58B-499.7M2.152.82N/AN/A1,433,7093,083,4637,382,21217,762,655
2017-08-18$243.26$245.0011.6%3.4%7.8%41.7%12.6%5.8%-0.5%-12.51B49.30B-488.0M1.842.43N/AN/A1,464,6532,689,0657,657,12218,343,716
2017-08-21$243.06$245.0010.9%3.2%7.8%36.4%12.6%5.1%-0.1%-8.64B41.43B-475.6M1.822.74N/AN/A764,6491,393,5026,480,68415,308,556
2017-08-22$245.50$245.009.5%2.7%8.6%26.1%10.5%4.7%0.1%-3.38B9.50B-456.6M1.772.43N/AN/A944,0441,672,3006,749,22815,599,836
2017-08-23$244.81$245.009.5%2.8%8.7%26.1%11.4%4.7%-0.3%-6.75B19.51B-477.4M2.062.91N/AN/A653,2501,348,0386,989,99116,039,679
2017-08-24$244.09$245.0010.0%3.0%8.7%29.7%11.2%5.3%-0.7%-7.51B30.09B-484.6M1.752.65N/AN/A655,7551,145,8306,844,87816,011,271
2017-08-25$244.80$245.008.8%2.6%8.8%20.9%10.4%4.8%-0.1%-4.78B19.39B-467.0M1.703.18N/AN/A869,1071,477,3627,004,01116,298,758
2017-08-28$244.49$245.008.5%2.7%8.8%19.0%9.7%4.9%1.0%-5.87B21.77B-452.4M1.563.23N/AN/A575,821896,5486,748,75615,596,162
2017-08-29$244.93$245.009.0%2.7%8.8%22.4%10.8%5.0%0.3%-5.01B16.44B-447.2M2.263.56N/AN/A671,7621,515,6596,919,98015,886,178
2017-08-30$245.85$245.008.6%2.6%8.9%19.1%10.1%4.9%0.4%-1.72B3.22B-449.5M1.752.70N/AN/A921,5501,612,6517,058,09016,271,286
2017-08-31$247.45$245.008.2%2.4%9.2%16.5%8.8%3.9%0.3%2.73B-17.70B-443.0M1.461.87N/AN/A1,251,1571,831,0167,052,57516,126,572