WMT Options History — September 2008

In September 2008, WMT traded between $19.47 and $21.06. ATM implied volatility averaged 29.7%, placing in the 36.2% IV rank vs the trailing year. The 30-day expected move averaged 8.6%. IV traded above realized volatility by 4.1% (HV 20d: 25.6%). Max pain ranged from $18.33 to $20.00. Net GEX was positive for 21 of 21 trading days. Term structure was in contango for 8 of 21 days. Put/call ratio averaged 1.10.

Notable Days

  • 2008-09-19: Highest Volume — 448,170 contracts
  • 2008-09-09: Largest IV spike — 26.4% change
  • 2008-09-29: Highest IV Rank — 67.4%
  • 2008-09-29: Largest Expected Move — 11.4%

Monthly Statistics

MetricAvgMinMaxOpenClose
Price$20.17$19.47$21.06$19.88$19.96
Max Pain$19.76$18.33$20.00$18.33$20.00
ATM IV29.7%22.5%39.7%23.2%33.9%
Expected Move8.6%6.6%11.4%6.7%9.7%
HV 20d25.6%18.9%32.9%32.5%32.9%
HV 60d28.1%26.6%30.7%27.2%30.7%
IV Rank36.2%14.0%67.4%16.1%49.2%
IV Percentile74.1%23.4%99.2%31.0%96.4%
Term Structure-0.9%-5.0%1.5%1.2%-1.2%
VWIV30.4%23.3%37.6%23.3%34.1%
Skew 25d6.0%4.0%8.7%5.1%6.8%
Skew 10d11.8%8.3%16.4%11.2%14.4%
Call IV 25d27.5%21.5%34.9%21.5%32.0%
Put IV 25d33.5%25.8%43.6%26.6%38.7%
Bid-Ask Spread %5.161.7612.381.768.54
Gamma HHI0.190.140.500.180.16
Net GEX28.5M575.2K79.5M31.0M11.7M
Net DEX-1.70B-2.54B-895.7M-1.65B-1.20B
Net VEX-11.7M-12.7M-10.9M-11.6M-12.0M
Div Yield0.0%0.0%0.0%0.0%0.0%
P/C Ratio1.100.342.431.190.66
Total Volume184,325.71478,360448,170100,098108,882
Total OI4,251,920.7143,713,9344,752,7084,224,0993,974,271

Daily Data (21 trading days)

DatePriceMax PainATM IVExp MoveHV 20dIV RankVWIVSkew 25dTerm StrGEXDEXVEXP/CSpread %Call VolPut VolCall OIPut OI
2008-09-02$19.88$18.3323.2%6.7%32.5%16.1%23.3%5.1%1.2%31.0M-1.65B-11.6M1.191.7645,76254,3361,977,1292,246,970
2008-09-03$19.93$18.3323.2%6.6%30.3%15.9%24.4%4.0%1.5%30.7M-1.65B-11.5M2.432.4237,10490,1801,984,8482,270,346
2008-09-04$19.93$18.3324.3%7.0%30.2%19.5%24.5%4.2%1.2%30.9M-1.68B-11.4M1.052.4172,24975,5041,989,8222,276,589
2008-09-05$20.25$20.0024.6%7.4%19.2%20.5%25.8%4.7%0.6%36.1M-1.93B-11.6M0.834.0659,56249,4462,007,8132,283,849
2008-09-08$20.67$20.0022.5%7.0%19.6%14.0%24.9%5.2%1.1%42.0M-2.25B-11.0M1.932.3877,625149,6672,023,0922,296,479
2008-09-09$20.38$20.0028.5%8.0%20.3%32.4%27.2%5.0%-0.3%36.5M-2.04B-11.5M1.262.7560,08175,6632,046,0572,331,885
2008-09-10$20.67$20.0024.1%7.4%20.5%18.8%27.0%5.1%0.9%40.3M-2.25B-11.2M1.054.3952,97755,7252,041,6532,335,089
2008-09-11$21.06$20.0026.2%7.5%18.9%25.3%26.8%4.9%0.9%42.4M-2.54B-10.9M0.793.72109,47986,9342,046,2972,346,120
2008-09-12$20.80$20.0027.5%7.9%19.8%29.5%27.9%5.2%0.5%38.2M-2.38B-11.3M1.864.8579,773148,2872,088,1982,368,776
2008-09-15$20.54$20.0030.1%8.6%19.3%37.5%32.0%6.1%-0.8%34.7M-2.11B-11.5M2.225.5778,966175,2152,085,8042,419,209
2008-09-16$20.71$20.0029.6%8.5%19.0%35.8%31.0%6.3%-0.6%36.5M-2.21B-11.5M1.195.11142,104168,7682,082,4892,460,735
2008-09-17$19.88$20.0037.0%10.6%24.2%59.1%37.6%8.1%-5.0%18.7M-1.38B-12.7M1.227.04158,877193,2872,107,5782,510,820
2008-09-18$20.49$20.0032.7%9.4%26.3%45.5%36.7%7.7%-3.9%37.4M-2.10B-11.6M1.199.44156,081185,1422,128,3952,531,733
2008-09-19$19.90$20.0033.2%9.5%28.7%47.2%32.5%6.5%-4.5%79.5M-1.59B-11.9M0.345.75335,487112,6832,153,6582,599,050
2008-09-22$19.63$20.0032.7%9.4%28.5%45.6%33.9%6.0%-1.7%575.2K-971.1M-12.0M0.545.58115,66862,3731,674,0302,039,904
2008-09-23$19.47$20.0035.6%10.2%28.2%54.6%34.3%6.8%-2.3%5.3M-895.7M-12.5M0.643.3763,67840,5451,791,0782,076,996
2008-09-24$19.64$20.0033.3%9.6%28.2%47.5%35.2%6.9%-1.7%7.9M-1.01B-12.4M0.804.6043,56034,8001,814,0342,083,560
2008-09-25$20.04$20.0030.1%8.6%29.1%37.4%30.1%6.3%-0.4%12.7M-1.28B-11.9M0.475.1779,75537,2601,811,8832,091,987
2008-09-26$20.24$20.0031.5%9.0%29.1%41.9%31.2%6.2%-1.2%16.0M-1.41B-11.9M0.637.0265,76341,7241,833,9722,092,833
2008-09-29$19.48$20.0039.7%11.4%31.8%67.4%37.2%8.7%-2.5%10.5M-1.16B-12.1M0.8812.3847,81142,0571,851,9002,113,404
2008-09-30$19.96$20.0033.9%9.7%32.9%49.2%34.1%6.8%-1.2%11.7M-1.20B-12.0M0.668.5465,42143,4611,857,2522,117,019