BX Options History — May 2021

In May 2021, BX traded between $84.17 and $92.77. ATM implied volatility averaged 24.4%, placing in the 10.5% IV rank vs the trailing year. The 30-day expected move averaged 6.9%. IV traded below realized volatility by 2.6% (HV 20d: 27.0%). Max pain ranged from $82.50 to $88.00. Net GEX was positive for 20 of 20 trading days. Term structure was in contango for 16 of 20 days. Put/call ratio averaged 0.63.

Notable Days

  • 2021-05-20: Highest Volume — 27,961 contracts
  • 2021-05-12: Largest IV spike — 13.8% change
  • 2021-05-12: Highest IV Rank — 25.2%
  • 2021-05-12: Largest Expected Move — 8.1%

Monthly Statistics

MetricAvgMinMaxOpenClose
Price$89.07$84.17$92.77$88.59$92.77
Max Pain$84.58$82.50$88.00$88.00$85.00
ATM IV24.4%22.0%28.6%23.4%22.5%
Expected Move6.9%6.1%8.1%6.5%6.1%
HV 20d27.0%23.1%31.8%23.4%25.0%
HV 60d26.2%24.4%27.6%24.4%25.1%
IV Rank10.5%1.4%25.2%6.2%3.5%
IV Percentile7.1%0.4%37.7%2.8%2.4%
Term Structure0.3%-1.1%1.6%0.6%-0.2%
VWIV25.4%22.7%28.9%23.6%22.9%
Skew 25d3.9%2.2%5.5%4.2%3.3%
Skew 10d9.3%1.9%19.6%19.6%8.6%
Call IV 25d23.3%21.1%27.0%22.9%21.5%
Put IV 25d27.2%24.1%31.8%27.2%24.7%
Bid-Ask Spread %22.848.2247.2447.2427.18
Gamma HHI0.140.070.220.150.15
Net GEX11.6M2.3M21.4M9.0M21.2M
Net DEX-397.2M-597.5M-206.0M-365.2M-597.5M
Net VEX-1.7M-2.0M-1.4M-1.4M-1.9M
Div Yield0.0%0.0%0.0%0.0%0.0%
P/C Ratio0.630.221.381.080.47
Total Volume10,053.54,50227,9618,2146,958
Total OI190,951168,378218,703168,378218,703

Daily Data (20 trading days)

DatePriceMax PainATM IVExp MoveHV 20dIV RankVWIVSkew 25dTerm StrGEXDEXVEXP/CSpread %Call WallPut WallCall VolPut VolCall OIPut OI
2021-05-03$88.59$88.0023.4%6.5%23.4%6.2%23.6%4.2%0.6%9.0M-365.2M-1.4M1.0847.24N/AN/A3,9414,27374,45593,923
2021-05-04$87.95$88.0024.2%6.9%23.2%9.2%24.5%3.6%0.4%7.0M-335.2M-1.6M0.6341.80N/AN/A3,9962,52975,95497,058
2021-05-05$88.05$88.0022.9%6.5%23.3%4.7%22.7%2.5%0.3%7.7M-339.2M-1.5M0.3812.38N/AN/A3,2651,23777,78998,563
2021-05-06$88.22$82.5023.2%6.8%23.1%5.6%24.6%2.5%0.3%8.5M-352.1M-1.5M0.368.22N/AN/A3,6711,33978,44299,111
2021-05-07$90.35$82.5022.0%6.7%23.7%1.4%23.5%2.3%0.3%13.7M-444.9M-1.4M0.2219.83N/AN/A15,8213,41480,04299,709
2021-05-10$89.17$82.5023.6%6.6%24.8%7.3%23.4%2.2%0.4%10.8M-382.7M-1.5M0.2720.22N/AN/A5,9551,58380,09997,329
2021-05-11$87.76$82.5025.1%7.3%25.9%12.6%27.4%3.0%0.2%7.8M-326.2M-1.6M0.8022.10N/AN/A5,1714,13882,58898,422
2021-05-12$84.17$82.5028.6%8.1%30.8%25.2%28.9%4.8%0.3%2.3M-206.0M-1.6M1.3817.32N/AN/A6,8539,46783,77499,495
2021-05-13$85.70$82.5026.4%7.8%30.8%17.2%27.3%4.2%1.2%2.6M-243.8M-1.6M0.6421.22N/AN/A5,1083,25085,256103,379
2021-05-14$87.42$82.5024.0%6.8%31.2%8.5%25.3%5.3%-1.1%10.1M-315.4M-1.7M0.6735.92N/AN/A4,7563,20787,189104,394
2021-05-17$87.73$85.0024.6%7.1%31.2%11.1%26.8%4.8%-0.0%7.4M-323.4M-1.6M0.7317.98N/AN/A8,7506,39981,513102,492
2021-05-18$88.44$85.0025.1%7.2%31.1%13.7%25.7%4.3%0.6%8.8M-352.6M-1.8M0.5513.83N/AN/A4,5222,47282,970108,033
2021-05-19$87.28$85.0026.3%7.5%31.8%18.4%27.9%5.3%0.5%5.3M-299.5M-1.8M0.608.73N/AN/A2,8831,74384,980109,217
2021-05-20$89.31$85.0025.9%7.4%31.2%17.1%27.5%5.5%1.6%12.0M-391.5M-1.8M0.3327.71N/AN/A21,0476,91486,501109,589
2021-05-21$91.16$85.0025.7%7.4%26.1%16.3%26.4%3.9%-0.3%21.4M-542.1M-2.0M0.5928.15N/AN/A8,2624,880101,546112,828
2021-05-24$91.31$85.0024.2%6.8%26.1%10.2%28.0%4.7%0.5%17.7M-499.5M-1.9M0.7720.25N/AN/A2,7992,14995,841103,143
2021-05-25$91.58$85.0023.8%6.6%25.6%8.6%23.3%3.6%0.4%18.3M-513.1M-2.0M0.2215.57N/AN/A8,2751,84496,973104,809
2021-05-26$92.26$85.0023.3%6.6%25.7%6.4%23.9%4.9%0.2%20.6M-561.1M-1.9M1.2819.75N/AN/A5,0916,524101,533105,969
2021-05-27$92.15$85.0023.1%6.4%25.5%6.0%23.7%3.9%0.6%20.4M-553.6M-2.0M0.6031.32N/AN/A4,1162,468104,149111,260
2021-05-28$92.77$85.0022.5%6.1%25.0%3.5%22.9%3.3%-0.2%21.2M-597.5M-1.9M0.4727.18N/AN/A4,7422,216106,162112,541