SPX Options History — December 2015

In December 2015, SPX traded between $2010.42 and $2101.61. ATM implied volatility averaged 15.4%, placing in the 26.3% IV rank vs the trailing year. The 30-day expected move averaged 4.4%. IV traded below realized volatility by 1.0% (HV 20d: 16.4%). Max pain ranged from $2000.00 to $2025.00. Net GEX was positive for 9 of 22 trading days. Term structure was in contango for 14 of 22 days. Put/call ratio averaged 2.15.

Notable Days

  • 2015-12-11: Highest Volume — 1,747,281 contracts
  • 2015-12-11: Largest IV spike — 23.0% change
  • 2015-12-11: Highest IV Rank — 49.6%
  • 2015-12-11: Largest Expected Move — 5.7%

Monthly Statistics

MetricAvgMinMaxOpenClose
Price$2054.44$2010.42$2101.61$2101.61$2049.76
Max Pain$2022.05$2000.00$2025.00$2000.00$2025.00
ATM IV15.4%12.5%20.4%12.5%15.3%
Expected Move4.4%3.6%5.7%3.6%4.3%
HV 20d16.4%12.6%18.8%12.6%18.4%
HV 60d15.5%14.5%16.4%15.4%14.5%
IV Rank26.3%12.8%49.6%12.8%25.6%
IV Percentile69.9%43.3%91.7%43.3%72.6%
Term Structure0.1%-0.5%0.7%0.4%0.1%
VWIV17.1%13.8%21.6%13.8%16.6%
Skew 25d5.8%4.5%8.1%5.0%6.0%
Skew 10d10.8%7.3%16.7%9.9%11.3%
Call IV 25d12.9%10.3%17.0%10.3%12.6%
Put IV 25d18.6%15.2%25.1%15.3%18.6%
Bid-Ask Spread %27.5821.6749.9021.6725.78
Gamma HHI0.030.030.040.040.04
Net GEX-2.94B-21.23B15.98B15.98B-8.52B
Net DEX-45.95B-271.16B243.43B-271.16B6.03B
Net VEX-1.77B-1.91B-1.70B-1.77B-1.72B
Div Yield0.0%0.0%0.0%0.0%0.0%
P/C Ratio2.151.832.692.182.20
Total Volume1,146,013.364618,1391,747,281819,8701,041,957
Total OI12,436,508.59,750,32914,839,68513,033,99310,532,993

Daily Data (22 trading days)

DatePriceMax PainATM IVExp MoveHV 20dIV RankVWIVSkew 25dTerm StrGEXDEXVEXP/CSpread %Call VolPut VolCall OIPut OI
2015-12-01$2101.61$2000.0012.5%3.6%12.6%12.8%13.8%5.0%0.4%15.98B-271.16B-1.77B2.1821.67257,973561,8974,495,0988,538,895
2015-12-02$2078.76$2025.0013.8%4.1%13.0%19.1%17.1%5.3%0.3%4.08B-169.39B-1.84B2.0826.11406,680847,4564,560,2018,706,855
2015-12-03$2049.44$2025.0015.9%4.6%13.6%28.9%18.5%5.9%0.1%-12.04B-26.99B-1.91B2.2825.32460,2791,051,2934,643,0828,934,244
2015-12-04$2090.77$2025.0012.8%3.8%15.6%14.4%14.5%4.5%0.4%13.13B-239.38B-1.76B1.8327.65505,574925,5464,707,6029,126,913
2015-12-07$2081.66$2025.0013.6%4.0%15.6%17.9%16.1%5.1%0.2%5.98B-187.32B-1.75B2.0722.47201,429416,7104,536,1958,606,861
2015-12-08$2065.58$2025.0014.9%4.3%15.5%24.2%16.6%5.7%0.1%-2.04B-111.54B-1.78B1.9423.92305,023592,6794,575,6198,752,744
2015-12-09$2045.01$2025.0016.7%4.8%15.8%32.4%18.5%6.1%-0.2%-9.10B-18.73B-1.82B1.9326.78412,241796,3814,658,2068,843,782
2015-12-10$2050.10$2025.0016.6%4.7%15.8%31.8%18.0%6.3%-0.1%-7.93B-38.52B-1.80B2.2426.55353,053792,1204,722,3288,994,152
2015-12-11$2010.78$2025.0020.4%5.7%16.0%49.6%21.6%8.1%-0.5%-21.23B150.02B-1.87B2.0929.18566,2071,181,0744,804,2199,247,514
2015-12-14$2019.78$2025.0018.8%5.4%15.6%42.3%20.4%6.9%-0.2%-13.15B63.62B-1.79B2.4130.59388,960938,7444,615,0308,712,256
2015-12-15$2043.91$2010.0017.5%5.0%15.5%36.1%19.1%6.4%-0.2%-6.14B-43.65B-1.80B2.0228.89414,962836,1614,734,1568,959,921
2015-12-16$2075.11$2015.0015.2%4.4%16.4%25.4%17.2%5.3%-0.1%5.02B-207.17B-1.73B1.8728.49503,201940,3654,836,8999,233,660
2015-12-17$2046.03$2015.0016.1%4.6%16.2%29.3%17.6%5.7%-0.1%-5.90B-69.03B-1.73B1.8822.42522,993985,0604,927,2409,504,858
2015-12-18$2010.42$2025.0017.4%5.0%17.2%35.6%18.6%6.2%-0.2%-14.47B243.43B-1.74B2.0826.37541,5831,125,4645,049,9069,789,779
2015-12-21$2019.15$2025.0016.6%4.8%17.3%31.8%18.4%5.7%0.3%-13.30B88.96B-1.73B2.2522.58280,010629,2853,092,1646,658,165
2015-12-22$2037.65$2025.0014.9%4.3%17.7%23.9%16.4%5.1%0.4%-6.96B35.55B-1.72B2.4021.72292,895701,9643,183,1136,840,552
2015-12-23$2063.87$2020.0013.3%3.8%18.4%16.6%14.6%5.0%0.7%4.05B-45.88B-1.72B2.0229.78382,830774,2713,262,3777,056,260
2015-12-24$2060.98$2025.0013.7%3.8%18.4%18.4%14.8%5.1%0.7%723.4M-35.21B-1.74B2.4549.90241,460590,9353,378,0757,305,320
2015-12-28$2054.97$2025.0014.7%4.1%18.4%22.9%15.7%5.8%0.3%-1.85B-12.23B-1.71B2.2030.13224,978495,8213,197,6326,785,662
2015-12-29$2077.98$2025.0013.6%3.7%18.8%17.8%15.0%5.8%0.4%7.71B-82.11B-1.70B2.1429.43291,884624,1013,256,3476,900,025
2015-12-30$2064.28$2025.0014.3%3.9%18.6%21.2%16.1%5.8%0.3%1.38B-40.23B-1.73B2.6930.97218,985589,8103,315,0687,021,219
2015-12-31$2049.76$2025.0015.3%4.3%18.4%25.6%16.6%6.0%0.1%-8.52B6.03B-1.72B2.2025.78325,971715,9863,351,1127,181,881