SPX Options History — August 2023

In August 2023, SPX traded between $4367.14 and $4579.51. ATM implied volatility averaged 13.2%, placing in the 14.4% IV rank vs the trailing year. The 30-day expected move averaged 3.8%. IV traded above realized volatility by 3.4% (HV 20d: 9.8%). Max pain ranged from $4425.00 to $4450.00. Net GEX was positive for 5 of 23 trading days. Term structure was in contango for 9 of 23 days. Put/call ratio averaged 1.36.

Notable Days

  • 2023-08-04: Highest Volume — 3,211,807 contracts
  • 2023-08-02: Largest IV spike — 19.2% change
  • 2023-08-17: Highest IV Rank — 24.2%
  • 2023-08-17: Largest Expected Move — 4.4%

Monthly Statistics

MetricAvgMinMaxOpenClose
Price$4459.00$4367.14$4579.51$4579.51$4517.94
Max Pain$4441.09$4425.00$4450.00$4425.00$4445.00
ATM IV13.2%11.0%15.2%11.2%11.0%
Expected Move3.8%3.0%4.4%3.1%3.0%
HV 20d9.8%8.5%12.2%8.5%10.9%
HV 60d10.3%10.1%10.4%10.2%10.3%
IV Rank14.4%3.6%24.2%4.7%3.6%
IV Percentile20.3%6.3%32.1%9.9%6.3%
Term Structure-0.1%-0.4%0.2%0.2%-0.1%
VWIV13.8%10.8%15.7%11.6%10.8%
Skew 25d4.4%3.2%5.3%3.2%3.3%
Skew 10d9.2%6.1%11.6%6.1%7.2%
Call IV 25d11.3%9.8%13.0%10.0%9.8%
Put IV 25d15.7%13.1%18.3%13.2%13.1%
Bid-Ask Spread %6.804.508.768.767.51
Gamma HHI0.020.010.030.020.02
Net GEX-18.33B-71.61B37.65B22.96B36.98B
Net DEX-338.24B-923.64B180.46B-923.64B-787.40B
Net VEX-7.56B-8.73B-6.84B-7.08B-6.84B
Div Yield0.0%0.0%0.0%0.0%0.0%
P/C Ratio1.361.211.581.311.42
Total Volume2,662,562.0432,056,8593,211,8072,056,8592,391,090
Total OI19,305,338.82618,413,24620,340,46018,413,24619,692,528

Daily Data (23 trading days)

DatePriceMax PainATM IVExp MoveHV 20dIV RankVWIVSkew 25dTerm StrGEXDEXVEXP/CSpread %Call VolPut VolCall OIPut OI
2023-08-01$4579.51$4425.0011.2%3.1%8.5%4.7%11.6%3.2%0.2%22.96B-923.64B-7.08B1.318.76890,2511,166,6085,976,82112,436,425
2023-08-02$4505.78$4425.0013.4%3.8%10.6%15.2%13.2%4.5%-0.2%-16.17B-553.80B-8.73B1.368.311,237,5851,681,5086,055,76312,634,674
2023-08-03$4504.60$4430.0013.2%3.8%9.9%14.1%14.1%4.5%-0.1%-26.06B-504.33B-7.75B1.414.641,075,6441,521,0286,167,62312,857,522
2023-08-04$4484.23$4435.0013.6%4.0%10.1%16.2%14.1%4.9%-0.4%-40.53B-355.00B-7.81B1.396.041,345,4351,866,3726,204,37713,012,428
2023-08-07$4508.74$4435.0012.7%3.8%10.1%11.7%14.0%4.5%0.1%-5.69B-557.82B-7.60B1.484.50943,6021,393,9066,198,38813,042,331
2023-08-08$4495.27$4440.0012.9%3.8%10.1%12.9%14.3%4.5%0.1%-19.41B-496.05B-7.76B1.335.581,114,7391,482,4926,284,43713,157,479
2023-08-09$4488.76$4440.0013.1%3.8%9.6%13.7%13.8%4.7%-0.3%-30.07B-392.21B-7.81B1.265.661,203,3331,514,2856,347,84013,305,977
2023-08-10$4470.40$4445.0013.3%3.9%9.0%14.8%13.8%4.6%-0.4%-34.52B-306.79B-7.97B1.346.251,323,2061,777,7906,392,86213,390,712
2023-08-11$4467.90$4450.0012.3%3.7%9.0%10.0%13.6%4.3%0.2%-43.39B-327.36B-7.55B1.376.291,054,6711,449,9716,465,83113,519,083
2023-08-14$4477.99$4450.0012.5%3.6%8.8%10.9%13.5%4.0%0.0%-12.76B-449.96B-7.41B1.356.31951,3111,287,3096,387,85713,332,802
2023-08-15$4434.84$4450.0014.1%4.0%9.0%18.6%15.0%4.7%-0.2%-43.82B-168.02B-7.71B1.396.291,134,8301,573,5586,422,96313,433,290
2023-08-16$4407.37$4450.0014.5%4.1%9.0%20.5%14.3%4.9%-0.2%-56.71B-44.45B-7.72B1.397.281,206,6481,680,9156,493,28413,657,690
2023-08-17$4376.25$4450.0015.2%4.4%8.9%24.2%15.6%5.3%-0.4%-71.61B180.46B-7.76B1.496.901,266,6011,888,2356,548,09313,792,367
2023-08-18$4367.14$4450.0014.7%4.3%8.8%21.6%15.7%4.8%0.1%-44.62B85.98B-7.72B1.586.731,124,2751,778,3226,106,76412,552,106
2023-08-21$4400.24$4445.0014.4%4.1%9.3%20.4%15.7%4.9%0.1%-23.81B-86.32B-7.59B1.276.551,074,2141,365,6616,058,71612,589,418
2023-08-22$4388.12$4440.0014.6%4.1%9.0%21.1%14.9%4.8%-0.0%-31.89B11.93B-7.57B1.257.471,032,1531,287,6886,139,50612,645,928
2023-08-23$4438.16$4440.0013.6%3.8%10.2%16.1%14.0%4.6%-0.2%3.61B-290.95B-7.51B1.447.191,033,3271,491,4916,168,28812,738,645
2023-08-24$4393.24$4440.0014.3%4.0%10.6%19.5%14.1%5.1%-0.3%-39.19B16.80B-7.48B1.298.321,169,0491,512,9916,232,30612,768,756
2023-08-25$4414.44$4440.0013.0%3.7%10.2%13.3%13.6%4.3%0.2%-14.09B-144.91B-7.39B1.357.371,221,8151,652,7006,279,52012,893,076
2023-08-28$4422.90$4440.0012.9%3.6%10.3%13.0%13.2%4.3%0.0%-4.14B-261.32B-7.18B1.347.41996,2581,333,9866,255,15312,780,323
2023-08-29$4497.76$4440.0012.1%3.4%12.2%9.0%12.8%3.9%-0.0%35.63B-670.70B-6.98B1.217.721,383,5271,675,2356,286,79912,835,689
2023-08-30$4515.38$4440.0011.5%3.1%10.9%5.9%12.4%3.4%-0.1%37.65B-753.62B-6.96B1.247.281,200,0241,483,2886,401,65213,078,701
2023-08-31$4517.94$4445.0011.0%3.0%10.9%3.6%10.8%3.3%-0.1%36.98B-787.40B-6.84B1.427.51988,9971,402,0936,438,55313,253,975