SPX Options History — March 2026

In March 2026, SPX traded between $6333.35 and $6879.94. ATM implied volatility averaged 21.1%, placing in the 30.0% IV rank vs the trailing year. The 30-day expected move averaged 5.9%. IV traded above realized volatility by 6.9% (HV 20d: 14.2%). Max pain ranged from $6720.00 to $6840.00. Net GEX was positive for 1 of 22 trading days. Term structure was in contango for 12 of 22 days. Put/call ratio averaged 1.19.

Notable Days

  • 2026-03-31: Highest Volume — 5,747,325 contracts
  • 2026-03-06: Largest IV spike — 19.7% change
  • 2026-03-27: Highest IV Rank — 45.4%
  • 2026-03-27: Largest Expected Move — 7.6%

Monthly Statistics

MetricAvgMinMaxOpenClose
Price$6653.64$6333.35$6879.94$6876.23$6526.85
Max Pain$6793.64$6720.00$6840.00$6795.00$6720.00
ATM IV21.1%16.6%26.5%17.0%21.4%
Expected Move5.9%4.4%7.6%5.2%6.1%
HV 20d14.2%12.0%20.3%14.1%20.3%
HV 60d12.6%11.4%15.6%11.4%15.6%
IV Rank30.0%17.1%45.4%18.4%30.9%
IV Percentile89.1%73.0%96.8%76.6%89.7%
Term Structure-0.2%-0.7%0.1%0.1%0.1%
VWIV23.0%19.2%28.9%19.7%23.0%
Skew 25d9.1%7.7%11.4%8.7%7.7%
Skew 10d18.6%15.3%22.9%17.6%15.3%
Call IV 25d16.5%12.6%21.5%13.1%17.2%
Put IV 25d25.6%21.3%30.4%21.8%25.0%
Bid-Ask Spread %7.345.3911.6411.647.31
Gamma HHI0.010.010.020.010.01
Net GEX-63.62B-114.56B2.04B-20.68B-7.56B
Net DEX-147.91B-1179.75B963.05B-1106.56B-141.17B
Net VEX-15.18B-15.88B-11.05B-15.16B-11.05B
Div Yield0.0%0.0%0.0%0.0%0.0%
P/C Ratio1.191.091.301.251.11
Total Volume4,911,483.2734,135,2715,747,3254,653,9695,747,325
Total OI21,131,396.22719,119,18224,027,94920,117,90420,215,280

Daily Data (22 trading days)

DatePriceMax PainATM IVExp MoveHV 20dIV RankVWIVSkew 25dTerm StrGEXDEXVEXP/CSpread %Call VolPut VolCall OIPut OI
2026-03-02$6876.23$6795.0017.0%5.2%14.1%18.4%19.7%8.7%0.1%-20.68B-1106.56B-15.16B1.2511.642,072,6972,581,2727,937,02912,180,875
2026-03-03$6820.38$6795.0018.7%5.7%14.2%23.1%21.8%9.3%-0.7%-56.57B-769.71B-15.35B1.099.122,603,7652,842,0588,092,84812,361,155
2026-03-04$6879.94$6790.0016.6%5.0%14.2%17.1%19.2%8.6%-0.5%2.04B-1179.75B-15.24B1.247.831,953,2792,421,1748,194,52212,505,356
2026-03-05$6812.20$6805.0018.5%5.3%14.6%22.5%20.9%9.7%-0.7%-52.63B-739.59B-15.35B1.146.022,395,4162,741,7558,320,80612,733,002
2026-03-06$6738.58$6800.0022.1%6.3%14.0%32.9%26.5%11.4%0.0%-76.99B-308.28B-15.88B1.226.252,183,5492,665,1198,391,11812,921,967
2026-03-09$6792.08$6800.0019.6%5.6%12.2%25.6%23.0%10.1%0.0%-40.92B-652.54B-15.53B1.1810.882,636,4403,106,1338,417,60812,863,351
2026-03-10$6786.58$6800.0019.7%5.7%12.0%26.2%21.7%9.9%0.1%-29.87B-684.20B-15.68B1.207.172,299,4772,769,2568,627,20513,146,484
2026-03-11$6770.66$6800.0019.9%5.6%12.0%26.5%21.9%9.3%-0.5%-48.90B-568.58B-15.46B1.155.932,079,0372,392,3778,718,69013,350,776
2026-03-12$6681.95$6840.0022.1%4.4%12.7%32.9%23.6%9.5%-0.6%-76.31B-157.04B-15.59B1.146.112,161,5742,455,9488,911,70613,586,731
2026-03-13$6625.30$6830.0022.9%4.7%12.0%35.3%23.6%8.9%0.0%-95.64B177.13B-15.65B1.216.042,387,3282,894,5089,063,77313,820,985
2026-03-16$6694.65$6825.0020.1%5.8%12.7%27.2%21.6%8.9%0.1%-61.61B-218.71B-15.12B1.256.442,135,1342,674,8059,101,28713,693,476
2026-03-17$6720.33$6820.0018.6%5.3%12.7%22.9%19.7%8.2%0.1%-49.22B-351.09B-15.04B1.305.391,828,6692,368,6309,293,34613,896,999
2026-03-18$6627.25$6805.0021.1%6.0%13.4%30.1%23.2%9.0%-0.5%-101.86B159.89B-15.18B1.267.571,832,1442,303,1279,389,93814,146,706
2026-03-19$6608.70$6800.0020.8%5.9%13.4%29.0%21.2%8.5%-0.5%-103.52B246.67B-15.19B1.197.582,363,8302,808,0039,581,60314,446,346
2026-03-20$6488.90$6800.0024.1%6.9%14.0%38.8%27.0%9.0%0.0%-114.56B511.66B-15.41B1.228.412,447,1312,975,8177,450,20311,668,979
2026-03-23$6606.34$6800.0020.9%6.0%15.5%29.5%22.1%9.0%0.1%-38.64B-28.88B-15.43B1.136.632,227,8442,519,0807,536,08311,625,772
2026-03-24$6561.62$6790.0022.2%6.4%15.1%33.2%23.9%9.4%0.1%-66.91B159.65B-15.42B1.105.712,182,8962,391,2567,730,55011,713,463
2026-03-25$6587.71$6775.0021.4%6.1%14.8%30.9%21.7%9.0%-0.5%-59.04B30.89B-15.42B1.156.071,986,5082,293,5227,840,33511,835,793
2026-03-26$6479.64$6770.0023.8%6.8%15.5%37.8%24.5%9.1%-0.6%-94.92B460.75B-15.37B1.226.642,181,6052,659,0757,897,86511,838,127
2026-03-27$6360.92$6750.0026.5%7.6%16.4%45.4%28.9%8.9%-0.0%-110.33B942.42B-15.28B1.198.332,457,6522,928,8917,967,89511,989,544
2026-03-30$6333.35$6750.0025.8%7.4%16.3%43.5%27.2%8.4%0.0%-94.90B963.05B-15.23B1.218.332,306,9542,790,5728,013,83211,871,308
2026-03-31$6526.85$6720.0021.4%6.1%20.3%30.9%23.0%7.7%0.1%-7.56B-141.17B-11.05B1.117.312,721,7393,025,5868,213,85512,001,425