SPY Options History — September 2008

In September 2008, SPY traded between $111.38 and $127.99. ATM implied volatility averaged 32.5%, placing in the 76.4% IV rank vs the trailing year. The 30-day expected move averaged 8.4%. IV traded above realized volatility by 2.5% (HV 20d: 30.0%). Max pain ranged from $122.00 to $128.00. Net GEX was positive for 0 of 21 trading days. Term structure was in contango for 5 of 21 days. Put/call ratio averaged 1.53.

Notable Days

  • 2008-09-17: Highest Volume — 3,308,900 contracts
  • 2008-09-29: Largest IV spike — 147.1% change
  • 2008-09-17: Highest IV Rank — 100.0%
  • 2008-09-29: Largest Expected Move — 14.4%

Monthly Statistics

MetricAvgMinMaxOpenClose
Price$121.94$111.38$127.99$127.99$115.99
Max Pain$125.86$122.00$128.00$127.00$122.00
ATM IV32.5%20.0%105.8%20.8%40.8%
Expected Move8.4%5.7%14.4%6.0%11.7%
HV 20d30.0%17.4%49.4%19.8%49.4%
HV 60d24.4%19.5%33.0%19.5%33.0%
IV Rank76.4%30.0%100.0%46.0%30.0%
IV Percentile86.0%41.7%100.0%47.2%99.2%
Term Structure-2.2%-10.5%0.6%0.3%-6.3%
VWIV29.3%21.2%47.9%21.2%41.5%
Skew 25d6.6%4.4%10.7%4.7%8.5%
Skew 10d12.2%7.8%19.4%8.4%16.2%
Call IV 25d26.0%17.9%45.0%18.4%36.8%
Put IV 25d32.6%22.4%55.7%23.0%45.3%
Bid-Ask Spread %6.533.7114.904.687.48
Gamma HHI0.060.040.090.050.07
Net GEX-1.29B-1.75B-873.8M-1.00B-1.34B
Net DEX27.50B15.96B50.00B15.96B30.61B
Net VEX-168.5M-365.4M-141.4M-158.7M-160.8M
Div Yield0.0%0.0%0.0%0.0%0.0%
P/C Ratio1.531.082.051.231.68
Total Volume1,610,196.286640,9023,308,900640,9021,429,598
Total OI11,948,654.85710,428,56014,786,91310,428,56012,221,847

Daily Data (21 trading days)

DatePriceMax PainATM IVExp MoveHV 20dIV RankVWIVSkew 25dTerm StrGEXDEXVEXP/CSpread %Call WallPut WallCall VolPut VolCall OIPut OI
2008-09-02$127.99$127.0020.8%6.0%19.8%46.0%21.2%4.7%0.3%-1.00B15.96B-158.7M1.234.68N/AN/A287,302353,6004,032,4126,396,148
2008-09-03$127.88$127.0020.0%5.7%17.4%41.5%21.6%4.5%0.6%-1.05B16.57B-157.8M1.574.30N/AN/A387,375607,4334,082,6036,463,714
2008-09-04$124.03$127.0022.6%6.5%20.3%56.7%21.2%4.8%0.3%-1.46B28.09B-150.2M1.184.07N/AN/A714,591843,0974,156,8306,508,586
2008-09-05$124.42$127.0021.9%6.3%19.8%52.5%22.3%4.4%0.3%-1.50B27.03B-151.0M1.744.75N/AN/A467,825812,8444,274,5066,652,776
2008-09-08$126.99$127.0023.5%6.2%20.1%61.8%21.9%4.4%-0.2%-1.13B18.39B-157.8M1.695.10N/AN/A437,487739,1604,373,8396,821,607
2008-09-09$123.22$127.0027.2%7.1%22.1%84.0%24.1%4.9%-0.4%-1.58B31.25B-153.0M1.224.91N/AN/A563,577689,5984,455,2716,929,827
2008-09-10$123.72$128.0025.4%6.7%22.1%73.1%23.4%4.8%-0.2%-1.68B30.75B-156.4M1.193.71N/AN/A454,038540,6614,611,0457,247,172
2008-09-11$125.51$128.0022.7%6.5%22.8%57.4%24.0%5.2%0.2%-1.40B23.71B-162.0M2.025.01N/AN/A474,641956,6904,693,8157,256,951
2008-09-12$126.09$127.0024.1%6.9%22.6%65.5%25.0%5.5%-0.2%-1.24B20.39B-168.2M1.225.24N/AN/A434,446531,5394,849,1577,436,732
2008-09-15$120.09$127.0029.6%8.5%28.0%97.8%29.0%6.2%-2.1%-1.75B41.54B-147.0M2.054.79N/AN/A696,5691,428,2604,946,4517,521,393
2008-09-16$122.10$127.0028.2%8.1%28.7%89.4%28.4%6.5%-1.8%-1.74B35.08B-154.0M1.658.44N/AN/A1,042,5661,723,5705,097,6637,628,968
2008-09-17$116.61$126.0033.6%9.6%32.5%100.0%32.7%8.6%-3.8%-1.64B50.00B-141.4M1.519.87N/AN/A1,319,1991,989,7015,447,0817,951,299
2008-09-18$120.07$125.0030.4%8.7%34.5%84.6%32.2%9.5%-3.2%-1.69B39.95B-157.9M1.3714.10N/AN/A1,061,5541,452,8165,717,4268,412,234
2008-09-19$124.12$125.0029.6%8.5%36.8%80.6%30.5%8.6%-2.8%-1.08B19.22B-177.9M1.0814.90N/AN/A1,325,5731,429,4345,954,2478,832,666
2008-09-22$121.31$125.0032.1%9.2%37.1%93.0%31.4%7.8%-2.9%-873.8M22.45B-365.4M1.646.11N/AN/A372,943610,2775,895,0928,829,614
2008-09-23$118.55$125.0034.2%9.8%37.2%100.0%34.0%7.7%-3.3%-963.2M25.13B-165.9M1.633.81N/AN/A535,552870,3524,126,8346,345,720
2008-09-24$118.93$125.0034.4%9.9%37.3%100.0%34.4%7.3%-3.4%-1.03B24.77B-166.2M1.685.39N/AN/A453,902761,9734,230,2566,557,898
2008-09-25$120.79$124.0032.3%9.3%37.6%90.2%32.3%6.9%-3.1%-913.4M19.30B-169.6M1.415.49N/AN/A507,401716,1734,370,7456,641,466
2008-09-26$120.85$124.0042.8%10.0%37.2%100.0%35.6%7.4%-4.5%-889.8M18.75B-173.5M1.425.15N/AN/A483,067685,0024,519,6156,798,523
2008-09-29$111.38$123.00105.8%14.4%46.3%100.0%47.9%10.7%-10.5%-1.04B38.67B-144.7M1.979.91N/AN/A883,4581,739,2784,725,2096,906,514
2008-09-30$115.99$122.0040.8%11.7%49.4%30.0%41.5%8.5%-6.3%-1.34B30.61B-160.8M1.687.48N/AN/A534,263895,3354,938,5677,283,280