SPY Options History — May 2008

In May 2008, SPY traded between $137.64 and $143.05. ATM implied volatility averaged 16.4%, placing in the 28.9% IV rank vs the trailing year. The 30-day expected move averaged 4.9%. IV traded above realized volatility by 1.5% (HV 20d: 14.9%). Max pain ranged from $138.00 to $140.00. Net GEX was positive for 4 of 21 trading days. Term structure was in contango for 15 of 21 days. Put/call ratio averaged 1.74.

Notable Days

  • 2008-05-16: Highest Volume — 1,009,370 contracts
  • 2008-05-02: Largest IV drop — 11.9% change
  • 2008-05-23: Highest IV Rank — 38.9%
  • 2008-05-08: Largest Expected Move — 5.3%

Monthly Statistics

MetricAvgMinMaxOpenClose
Price$140.47$137.64$143.05$141.12$140.35
Max Pain$139.62$138.00$140.00$138.00$140.00
ATM IV16.4%14.8%18.5%16.8%16.2%
Expected Move4.9%4.3%5.3%4.8%4.6%
HV 20d14.9%12.8%17.2%15.6%13.5%
HV 60d20.8%20.6%21.1%20.7%20.6%
IV Rank28.9%20.9%38.9%32.4%26.6%
IV Percentile27.1%17.9%38.5%30.2%23.0%
Term Structure0.4%-0.2%2.3%1.3%0.9%
VWIV17.7%15.3%19.5%17.5%16.2%
Skew 25d4.9%3.3%5.5%3.8%4.5%
Skew 10d9.1%6.1%10.1%7.6%8.2%
Call IV 25d14.7%13.3%16.2%14.8%14.0%
Put IV 25d19.6%16.8%21.3%18.5%18.5%
Bid-Ask Spread %3.181.665.942.155.54
Gamma HHI0.050.040.070.050.05
Net GEX-441.4M-1.02B344.5M-104.8M-713.5M
Net DEX699.5M-9.80B12.88B-4.73B4.11B
Net VEX-180.5M-186.2M-172.5M-182.6M-183.2M
Div Yield0.0%0.0%0.0%0.0%0.0%
P/C Ratio1.740.812.771.621.33
Total Volume717,603415,7091,009,370825,600415,709
Total OI10,161,641.7148,799,56311,209,8159,946,70210,097,926

Daily Data (21 trading days)

DatePriceMax PainATM IVExp MoveHV 20dIV RankVWIVSkew 25dTerm StrGEXDEXVEXP/CSpread %Call WallPut WallCall VolPut VolCall OIPut OI
2008-05-01$141.12$138.0016.8%4.8%15.6%32.4%17.5%3.8%1.3%-104.8M-4.73B-182.6M1.622.15N/AN/A314,726510,8743,889,7586,056,944
2008-05-02$141.51$138.0014.8%4.3%15.6%22.1%15.3%3.3%2.3%57.2M-6.26B-179.9M1.821.66N/AN/A299,050545,1063,931,0786,195,271
2008-05-05$140.83$139.0016.1%5.1%15.7%28.7%19.1%5.3%-0.1%-66.7M-3.85B-180.6M2.772.74N/AN/A163,919454,6654,036,4786,256,761
2008-05-06$142.05$139.0015.5%5.0%15.9%24.6%18.2%5.1%0.1%33.8M-7.46B-178.4M1.582.67N/AN/A352,047556,8964,016,6736,351,681
2008-05-07$139.52$139.0016.7%5.3%17.1%31.0%18.9%5.4%0.0%-592.7M1.89B-184.1M1.933.71N/AN/A265,560513,0694,114,9236,467,176
2008-05-08$139.16$139.0016.7%5.3%17.2%30.9%18.3%5.5%-0.0%-734.8M3.42B-183.5M2.142.97N/AN/A231,996497,1924,136,0506,554,618
2008-05-09$138.90$140.0016.0%5.3%15.4%26.8%18.7%5.3%0.0%-836.2M4.77B-181.7M2.293.45N/AN/A204,208468,6254,165,6276,667,059
2008-05-12$140.46$140.0015.8%5.1%15.6%25.8%18.3%5.5%0.1%-404.4M-1.49B-176.7M1.642.38N/AN/A236,378386,8504,178,1076,707,284
2008-05-13$140.48$140.0015.9%5.1%15.6%26.5%18.2%5.3%-0.1%-302.4M-1.76B-175.4M1.752.56N/AN/A199,328349,0164,183,4066,750,566
2008-05-14$140.77$140.0014.8%4.9%12.8%20.9%18.3%5.3%-0.2%-139.1M-3.17B-173.9M1.213.26N/AN/A377,560456,4184,207,4476,739,114
2008-05-15$142.53$140.0015.6%4.5%13.4%24.8%17.6%5.2%0.3%328.7M-9.47B-172.5M1.842.69N/AN/A302,972558,4664,243,7166,762,933
2008-05-16$142.66$140.0015.6%4.5%13.0%24.9%16.8%4.7%0.2%344.5M-9.80B-174.9M1.612.63N/AN/A386,237623,1334,287,8976,921,918
2008-05-19$143.05$140.0016.0%4.6%13.0%27.0%16.6%4.8%-0.2%-304.0M-3.19B-176.6M1.882.93N/AN/A269,434505,4073,470,3195,329,244
2008-05-20$141.89$140.0016.5%4.7%13.3%28.6%17.2%4.8%0.4%-541.9M776.5M-183.6M2.042.35N/AN/A234,003478,3553,579,3085,531,593
2008-05-21$139.49$140.0017.9%5.1%14.8%35.5%17.5%4.7%0.3%-793.1M7.30B-185.4M1.732.71N/AN/A282,868488,2353,647,0155,599,001
2008-05-22$139.51$140.0016.8%4.8%14.7%29.9%16.9%4.8%0.3%-831.9M7.32B-186.2M1.572.06N/AN/A185,260290,1083,702,6995,727,425
2008-05-23$137.64$140.0018.5%5.3%15.1%38.9%18.3%4.8%-0.1%-1.02B12.88B-185.2M1.502.74N/AN/A305,611459,9083,756,7675,793,891
2008-05-27$138.66$140.0018.0%5.2%15.4%36.4%19.5%5.2%0.8%-932.7M9.52B-183.4M2.084.60N/AN/A193,796403,5443,831,8945,891,046
2008-05-28$139.30$140.0017.8%5.1%15.4%34.9%18.0%4.8%0.7%-892.4M7.72B-182.4M1.414.98N/AN/A226,509318,6433,836,8765,936,108
2008-05-29$140.00$140.0016.8%4.8%15.4%29.9%16.7%4.5%1.1%-819.6M6.15B-179.2M0.815.94N/AN/A418,744339,2383,868,4815,972,398
2008-05-30$140.35$140.0016.2%4.6%13.5%26.6%16.2%4.5%0.9%-713.5M4.11B-183.2M1.335.54N/AN/A178,286237,4234,034,4706,063,456