SPY Options History — December 2008

In December 2008, SPY traded between $82.11 and $91.88. ATM implied volatility averaged 48.5%, placing in the 38.2% IV rank vs the trailing year. The 30-day expected move averaged 13.7%. IV traded below realized volatility by 14.6% (HV 20d: 63.1%). Max pain ranged from $90.00 to $100.00. Net GEX was positive for 2 of 22 trading days. Term structure was in contango for 12 of 22 days. Put/call ratio averaged 1.16.

Notable Days

  • 2008-12-18: Highest Volume — 5,156,764 contracts
  • 2008-12-29: Largest IV spike — 27.3% change
  • 2008-12-01: Highest IV Rank — 55.1%
  • 2008-12-01: Largest Expected Move — 18.4%

Monthly Statistics

MetricAvgMinMaxOpenClose
Price$88.03$82.11$91.88$82.11$90.24
Max Pain$93.14$90.00$100.00$100.00$90.00
ATM IV48.5%34.4%64.1%64.1%34.4%
Expected Move13.7%9.9%18.4%18.4%9.9%
HV 20d63.1%32.8%77.4%75.7%32.8%
HV 60d73.7%71.2%75.3%74.1%71.2%
IV Rank38.2%21.6%55.1%55.1%21.6%
IV Percentile82.1%73.8%94.8%94.8%73.8%
Term Structure-0.4%-3.8%1.7%-3.8%1.7%
VWIV48.6%35.6%65.7%62.5%35.6%
Skew 25d11.5%7.0%16.9%16.9%7.0%
Skew 10d21.6%12.1%28.4%28.2%12.1%
Call IV 25d42.5%31.8%56.3%56.3%31.8%
Put IV 25d54.0%38.8%73.2%73.2%38.8%
Bid-Ask Spread %5.793.257.715.913.90
Gamma HHI0.050.030.200.040.05
Net GEX-188.1M-474.0M10.9M-320.6M-126.6M
Net DEX17.76B8.10B26.11B26.11B8.10B
Net VEX-93.9M-109.0M-76.1M-93.8M-76.1M
Div Yield0.0%0.0%0.0%0.0%0.0%
P/C Ratio1.160.181.871.351.22
Total Volume1,224,049.045177,2875,156,7641,229,831743,941
Total OI12,157,223.8648,625,10014,683,17312,341,0129,125,875

Daily Data (22 trading days)

DatePriceMax PainATM IVExp MoveHV 20dIV RankVWIVSkew 25dTerm StrGEXDEXVEXP/CSpread %Call WallPut WallCall VolPut VolCall OIPut OI
2008-12-01$82.11$100.0064.1%18.4%75.7%55.1%62.5%16.9%-3.8%-320.6M26.11B-93.8M1.355.91N/AN/A522,995706,8365,262,9197,078,093
2008-12-02$85.27$100.0060.0%17.2%77.4%50.7%62.8%15.5%-3.4%-262.2M23.97B-98.9M1.276.23N/AN/A470,797598,4675,386,4607,251,144
2008-12-03$87.32$100.0057.7%16.5%76.8%48.2%60.2%14.2%-2.7%-233.9M21.96B-102.0M1.434.87N/AN/A571,755820,3675,413,7207,308,084
2008-12-04$85.30$100.0060.2%17.2%75.9%50.9%65.7%15.1%-2.9%-272.3M24.44B-101.3M1.016.01N/AN/A618,241623,7465,498,4357,499,499
2008-12-05$87.93$100.0055.4%15.9%74.5%45.7%55.7%13.2%-1.9%-208.5M21.24B-107.1M1.337.40N/AN/A679,808905,5125,719,4947,624,775
2008-12-08$91.00$100.0053.3%15.3%74.6%43.4%52.9%13.2%-1.2%-157.0M16.86B-109.0M1.036.64N/AN/A808,039832,9915,707,4917,745,954
2008-12-09$89.50$99.0055.9%15.3%74.7%46.3%49.3%13.3%-0.3%-163.8M18.96B-107.5M0.765.16N/AN/A1,023,288773,1065,842,0777,818,156
2008-12-10$90.11$90.0050.5%14.3%73.9%40.5%53.4%13.0%0.3%-146.5M18.22B-107.1M1.265.98N/AN/A456,161573,4675,955,0977,890,098
2008-12-11$87.94$90.0049.6%14.2%72.5%39.5%49.2%12.2%-0.0%-217.4M21.93B-100.1M1.097.30N/AN/A587,083642,6445,938,7767,948,753
2008-12-12$88.99$90.0048.6%13.9%69.3%38.4%48.5%11.8%0.3%-178.2M20.28B-101.4M1.227.15N/AN/A546,374664,1416,005,9628,047,311
2008-12-15$87.75$90.0051.0%14.6%66.9%41.1%54.2%12.2%-0.9%-234.1M22.50B-96.6M1.877.31N/AN/A361,460674,7836,082,9358,112,413
2008-12-16$91.88$90.0046.9%13.4%68.6%36.6%49.2%11.9%-0.2%10.9M15.14B-100.3M1.257.71N/AN/A532,886667,7526,164,4868,257,120
2008-12-17$90.99$90.0045.2%13.0%68.5%34.8%45.8%10.5%1.1%10.1M16.72B-98.9M0.986.08N/AN/A687,013671,0926,263,8908,419,283
2008-12-18$89.29$90.0042.7%12.2%64.1%32.1%42.3%10.1%1.6%-41.2M19.01B-91.6M0.186.29N/AN/A4,384,313772,4516,285,9588,361,258
2008-12-19$88.19$90.0040.7%11.7%56.9%29.9%40.1%9.1%0.6%-474.0M25.26B-86.5M0.967.52N/AN/A649,840621,8005,901,2278,416,548
2008-12-22$87.06$90.0040.4%11.6%54.8%29.6%39.9%9.0%0.5%-182.5M11.91B-83.2M0.944.74N/AN/A353,482331,1843,707,5204,917,580
2008-12-23$86.16$90.0041.7%12.0%49.7%31.0%40.7%9.1%0.2%-213.5M12.97B-81.8M0.964.96N/AN/A338,475325,2683,758,2524,941,913
2008-12-24$86.66$90.0040.6%11.6%49.7%29.8%40.5%9.0%0.2%-211.1M12.28B-82.7M0.974.37N/AN/A104,321100,8933,837,4165,025,860
2008-12-26$87.16$90.0039.3%11.4%47.8%28.4%40.2%9.3%0.6%-200.8M11.82B-81.4M1.534.70N/AN/A70,159107,1283,852,0005,056,585
2008-12-29$86.91$90.0050.0%11.5%47.6%39.9%42.2%9.3%0.5%-206.8M11.68B-78.2M1.823.90N/AN/A174,279316,3663,860,8775,097,838
2008-12-30$88.97$90.0038.7%10.7%34.9%26.3%37.9%8.5%0.9%-107.4M9.29B-79.8M1.033.25N/AN/A253,126261,2493,889,0695,180,724
2008-12-31$90.24$90.0034.4%9.9%32.8%21.6%35.6%7.0%1.7%-126.6M8.10B-76.1M1.223.90N/AN/A334,725409,2163,921,0445,204,831