BX Options History — August 2025

In August 2025, BX traded between $163.03 and $177.06. ATM implied volatility averaged 28.2%, placing in the 9.9% IV rank vs the trailing year. The 30-day expected move averaged 8.2%. IV traded below realized volatility by 0.0% (HV 20d: 28.2%). Max pain ranged from $155.00 to $160.00. Net GEX was positive for 17 of 21 trading days. Term structure was in contango for 14 of 21 days. Put/call ratio averaged 0.93.

Notable Days

  • 2025-08-01: Highest Volume — 49,464 contracts
  • 2025-08-22: Largest IV drop — 10.2% change
  • 2025-08-21: Highest IV Rank — 15.7%
  • 2025-08-21: Largest Expected Move — 9.0%

Monthly Statistics

MetricAvgMinMaxOpenClose
Price$170.21$163.03$177.06$169.86$171.20
Max Pain$157.14$155.00$160.00$160.00$160.00
ATM IV28.2%26.3%31.3%30.0%27.8%
Expected Move8.2%7.7%9.0%8.9%8.1%
HV 20d28.2%20.0%33.3%33.3%25.9%
HV 60d29.4%27.6%31.9%31.9%29.4%
IV Rank9.9%6.4%15.7%13.4%9.3%
IV Percentile21.3%8.3%47.6%37.3%16.7%
Term Structure0.3%-1.0%2.2%0.7%-0.8%
VWIV28.9%26.9%31.1%30.7%28.0%
Skew 25d5.2%3.5%11.0%5.0%3.9%
Skew 10d5.9%-6.8%14.7%8.4%8.1%
Call IV 25d25.6%18.0%29.1%29.1%26.1%
Put IV 25d30.8%28.4%34.1%34.1%30.0%
Bid-Ask Spread %58.0744.8066.5746.8944.80
Gamma HHI0.140.080.550.280.09
Net GEX6.4M-61.8M43.7M-14.4M11.1M
Net DEX-653.9M-1.06B-271.5M-699.5M-685.8M
Net VEX-7.1M-7.4M-6.9M-7.3M-7.1M
Div Yield0.0%0.0%0.0%0.0%0.0%
P/C Ratio0.930.252.190.360.94
Total Volume15,385.9522,74149,46449,4645,884
Total OI320,766.238291,749341,061341,061317,466

Daily Data (21 trading days)

DatePriceMax PainATM IVExp MoveHV 20dIV RankVWIVSkew 25dTerm StrGEXDEXVEXP/CSpread %Call WallPut WallCall VolPut VolCall OIPut OI
2025-08-01$169.86$160.0030.0%8.9%33.3%13.4%30.7%5.0%0.7%-14.4M-699.5M-7.3M0.3646.89N/AN/A36,39513,069152,441188,620
2025-08-04$170.77$155.0029.1%8.2%32.3%11.7%28.5%3.9%-0.4%13.9M-672.8M-7.3M0.8465.27N/AN/A4,3773,670126,261187,726
2025-08-05$167.88$155.0028.7%8.3%32.4%11.0%30.1%4.7%0.1%4.2M-501.9M-7.4M1.3462.37N/AN/A2,3123,099128,276189,288
2025-08-06$169.82$155.0029.0%8.2%32.4%11.5%30.3%4.0%-0.9%11.9M-637.3M-7.3M0.2760.22N/AN/A12,3763,395129,085189,769
2025-08-07$167.65$155.0029.6%8.4%30.9%12.6%31.1%4.5%-0.3%1.7M-503.4M-7.4M1.3263.58N/AN/A10,27313,559138,977191,908
2025-08-08$168.91$155.0028.2%8.0%30.7%9.9%29.5%5.8%0.1%2.6M-580.2M-7.3M0.5663.00N/AN/A4,1692,352141,320193,980
2025-08-11$170.69$155.0028.9%8.4%30.8%11.2%27.7%11.0%0.3%8.8M-669.1M-7.1M2.1964.66N/AN/A6,72014,719126,089192,219
2025-08-12$174.65$155.0026.7%7.7%30.7%7.0%27.0%3.7%0.1%28.4M-913.1M-6.9M0.8562.71N/AN/A7,1646,064131,193198,240
2025-08-13$177.06$155.0026.5%7.9%28.3%6.8%27.3%3.5%0.9%43.7M-1.06B-6.9M1.3266.57N/AN/A6,9369,190134,551197,443
2025-08-14$174.28$155.0026.6%7.8%26.5%7.0%27.5%10.9%0.7%24.3M-867.2M-6.9M1.1265.39N/AN/A6,1426,877132,964200,655
2025-08-15$172.21$155.0026.3%7.9%25.6%6.4%26.9%10.3%1.8%-61.8M-752.8M-7.0M0.8365.99N/AN/A3,3162,746133,275201,762
2025-08-18$169.52$155.0028.0%8.0%26.0%9.6%28.6%4.7%0.2%10.4M-595.3M-7.1M1.3652.59N/AN/A3,1944,350120,121171,628
2025-08-19$167.02$155.0029.4%8.4%25.7%12.3%30.2%4.3%-0.4%5.0M-500.0M-7.0M1.1957.30N/AN/A11,26013,439121,482174,463
2025-08-20$164.50$160.0029.2%8.4%25.9%11.9%30.0%4.3%0.0%-12.9M-326.7M-7.1M1.2055.07N/AN/A10,21112,227130,330186,424
2025-08-21$163.03$160.0031.3%9.0%20.0%15.7%31.0%4.4%-1.0%-7.2M-271.5M-7.3M1.4459.33N/AN/A10,81815,556134,955185,721
2025-08-22$170.81$160.0028.1%8.0%27.0%9.7%28.5%4.2%-0.0%21.8M-753.2M-7.0M0.6453.29N/AN/A22,38114,424142,519187,578
2025-08-25$169.51$160.0028.0%8.3%26.9%9.5%29.4%4.8%0.7%6.0M-633.3M-7.2M0.3658.52N/AN/A5,5381,992129,279184,246
2025-08-26$170.59$160.0026.9%8.1%27.0%7.6%28.3%4.3%1.4%8.4M-641.6M-7.3M0.4357.92N/AN/A2,8591,227128,494184,621
2025-08-27$172.18$160.0026.5%8.0%26.7%6.7%27.9%3.8%2.2%13.4M-723.0M-7.2M0.6548.15N/AN/A1,6661,075129,492185,255
2025-08-28$172.37$160.0026.6%7.7%26.7%6.9%27.2%3.6%0.6%14.7M-739.8M-7.1M0.2545.84N/AN/A4,8561,228130,049185,926
2025-08-29$171.20$160.0027.8%8.1%25.9%9.3%28.0%3.9%-0.8%11.1M-685.8M-7.1M0.9444.80N/AN/A3,0402,844131,090186,376