SPX Options History — April 2015

In April 2015, SPX traded between $2058.37 and $2117.83. ATM implied volatility averaged 11.8%, placing in the 51.1% IV rank vs the trailing year. The 30-day expected move averaged 3.4%. IV traded above realized volatility by 0.6% (HV 20d: 11.2%). Max pain ranged from $2075.00 to $2085.00. Net GEX was positive for 14 of 21 trading days. Term structure was in contango for 18 of 21 days. Put/call ratio averaged 2.13.

Notable Days

  • 2015-04-17: Highest Volume — 1,720,228 contracts
  • 2015-04-30: Largest IV spike — 13.6% change
  • 2015-04-01: Highest IV Rank — 61.5%
  • 2015-04-01: Largest Expected Move — 3.9%

Monthly Statistics

MetricAvgMinMaxOpenClose
Price$2094.74$2058.37$2117.83$2058.37$2084.21
Max Pain$2080.00$2075.00$2085.00$2075.00$2085.00
ATM IV11.8%10.3%13.8%13.8%12.9%
Expected Move3.4%2.9%3.9%3.9%3.8%
HV 20d11.2%8.1%14.9%14.8%8.8%
HV 60d12.4%10.9%13.7%13.7%10.9%
IV Rank51.1%43.6%61.5%61.5%57.0%
IV Percentile54.5%31.0%77.4%77.4%71.4%
Term Structure0.2%-0.0%0.4%0.2%0.2%
VWIV13.5%11.5%15.3%15.2%15.3%
Skew 25d4.6%4.1%5.1%5.1%5.0%
Skew 10d8.2%7.3%9.1%9.1%9.1%
Call IV 25d9.9%8.8%11.6%11.6%10.9%
Put IV 25d14.5%12.9%16.7%16.7%15.9%
Bid-Ask Spread %32.9221.2149.1521.2124.37
Gamma HHI0.030.030.060.030.03
Net GEX2.00B-15.42B14.89B-15.21B-15.42B
Net DEX-81.96B-152.55B35.58B35.58B4.12B
Net VEX-2.09B-2.22B-2.01B-2.11B-2.22B
Div Yield0.0%0.0%0.0%0.0%0.0%
P/C Ratio2.131.832.432.432.12
Total Volume1,092,057.905563,6371,720,2281,114,5741,302,924
Total OI10,969,990.61910,240,73411,924,58510,389,43711,614,377

Daily Data (21 trading days)

DatePriceMax PainATM IVExp MoveHV 20dIV RankVWIVSkew 25dTerm StrGEXDEXVEXP/CSpread %Call VolPut VolCall OIPut OI
2015-04-01$2058.37$2075.0013.8%3.9%14.8%61.5%15.2%5.1%0.2%-15.21B35.58B-2.11B2.4321.21325,103789,4713,169,0397,220,398
2015-04-02$2069.04$2075.0012.9%3.8%14.9%56.9%14.6%5.0%0.3%-9.68B-5.84B-2.09B2.2941.27330,345756,9903,260,9557,458,572
2015-04-06$2081.65$2075.0013.2%3.8%14.1%58.4%15.1%5.1%-0.0%-2.88B-50.73B-2.05B2.2542.97277,158622,4753,185,1717,183,495
2015-04-07$2076.31$2075.0013.3%3.8%14.0%58.6%14.9%5.1%-0.0%-5.89B-34.65B-2.06B1.9935.61333,058662,7563,267,3347,308,562
2015-04-08$2082.95$2075.0012.2%3.5%12.5%53.5%15.3%5.0%0.1%-3.30B-52.51B-2.06B2.1726.67178,080385,5573,343,9057,467,576
2015-04-09$2090.87$2075.0011.6%3.4%12.5%50.3%13.8%4.5%0.3%2.98B-86.88B-2.03B2.2337.69316,051706,2033,396,9057,617,599
2015-04-10$2101.52$2075.0011.0%3.2%11.8%47.3%13.7%4.2%0.3%14.89B-130.25B-2.01B2.4241.78371,554899,5913,460,7947,796,483
2015-04-13$2093.07$2075.0012.3%3.6%11.6%53.8%14.5%4.5%0.2%3.47B-91.71B-2.06B1.9132.87340,464649,2893,372,3397,461,467
2015-04-14$2094.27$2075.0012.1%3.5%10.8%52.6%13.2%4.5%0.2%3.46B-96.51B-2.04B2.0845.04316,344658,9073,440,9687,620,303
2015-04-15$2105.94$2075.0011.2%3.2%11.0%48.2%12.3%4.2%0.3%13.34B-142.51B-2.03B1.8330.56459,761839,2763,506,9547,791,727
2015-04-16$2106.21$2080.0011.0%3.1%10.0%47.2%11.7%4.2%0.4%11.77B-141.47B-2.06B2.2749.15355,915808,4653,625,3878,046,617
2015-04-17$2080.44$2085.0012.3%3.5%10.8%53.7%15.3%4.9%0.3%-9.17B-27.11B-2.13B2.3140.23520,0451,200,1833,693,5628,231,023
2015-04-20$2100.42$2085.0011.2%3.2%11.0%48.3%12.2%4.8%-0.0%3.39B-92.73B-2.07B2.2734.84264,027598,8583,281,0896,959,645
2015-04-21$2098.06$2085.0011.2%3.1%11.0%48.4%13.5%4.6%0.0%2.18B-86.51B-2.07B1.9531.79331,886646,8353,352,1837,077,872
2015-04-22$2107.83$2085.0010.7%3.0%10.9%45.5%12.3%4.4%0.1%7.62B-115.81B-2.09B2.0827.08306,753639,1343,422,8607,230,206
2015-04-23$2113.60$2085.0010.5%3.0%9.4%44.9%12.0%4.2%0.1%12.44B-138.66B-2.12B2.3328.71344,988805,1173,478,0077,399,647
2015-04-24$2117.83$2085.0010.3%2.9%9.3%43.6%11.5%4.1%0.2%14.03B-152.55B-2.11B1.8627.07475,583884,7823,555,9477,620,049
2015-04-27$2107.59$2085.0011.3%3.2%9.5%48.8%13.3%4.4%0.3%4.80B-101.77B-2.16B2.1923.10369,646809,1243,494,5977,411,533
2015-04-28$2112.97$2085.0010.8%3.0%8.6%46.2%11.6%4.2%0.4%7.42B-120.36B-2.13B1.8723.91330,987617,5383,561,2167,620,785
2015-04-29$2106.44$2085.0011.4%3.3%8.1%49.2%12.4%4.6%0.3%1.70B-92.28B-2.16B1.9325.39376,428725,5653,634,6697,727,986
2015-04-30$2084.21$2085.0012.9%3.8%8.8%57.0%15.3%5.0%0.2%-15.42B4.12B-2.22B2.1224.37417,935884,9893,682,3657,932,012