BX Options History — October 2025 In October 2025, BX traded between $146.13 and $168.76. ATM implied volatility averaged 36.7%, placing in the 26.1% IV rank vs the trailing year. The 30-day expected move averaged 10.2%. IV traded above realized volatility by 4.2% (HV 20d: 32.5%). Max pain ranged from $162.50 to $172.50. Net GEX was positive for 4 of 23 trading days. Term structure was in contango for 7 of 23 days. Put/call ratio averaged 0.80.
Notable Days 2025-10-23 : Highest Volume — 35,736 contracts2025-10-16 : Largest IV spike — 21.6% change2025-10-16 : Highest IV Rank — 43.4%2025-10-16 : Largest Expected Move — 12.8%Monthly Statistics Metric Avg Min Max Open Close Price $158.95 $146.13 $168.76 $168.76 $146.13 Max Pain $167.50 $162.50 $172.50 $172.50 $162.50 ATM IV 36.7% 31.9% 45.9% 35.8% 33.1% Expected Move 10.2% 9.0% 12.8% 9.3% 9.6% HV 20d 32.5% 24.9% 35.7% 32.0% 33.8% HV 60d 29.8% 28.2% 30.8% 29.9% 30.7% IV Rank 26.1% 17.1% 43.4% 24.3% 19.3% IV Percentile 75.9% 49.6% 94.0% 78.2% 59.1% Term Structure -0.4% -2.3% 3.6% -1.2% 0.6% VWIV 35.0% 28.7% 45.5% 32.8% 28.7% Skew 25d 5.5% 2.6% 10.9% 4.7% 4.4% Skew 10d 9.7% -7.4% 23.1% 10.0% 10.3% Call IV 25d 34.3% 30.8% 41.4% 33.7% 31.2% Put IV 25d 39.8% 34.4% 50.2% 38.4% 35.6% Bid-Ask Spread % 54.70 42.87 62.21 48.48 55.95 Gamma HHI 0.06 0.05 0.12 0.05 0.08 Net GEX -4.5M -19.0M 6.7M 1.9M -19.0M Net DEX 6.0M -340.7M 445.0M -340.7M 445.0M Net VEX -7.3M -7.6M -6.9M -7.3M -6.9M Div Yield 0.0% 0.0% 0.0% 0.0% 0.0% P/C Ratio 0.80 0.20 1.90 1.36 0.69 Total Volume 13,407.13 5,193 35,736 8,808 22,680 Total OI 317,503.522 298,011 338,996 311,071 338,996
Daily Data (23 trading days) Date Price Max Pain ATM IV Exp Move HV 20d IV Rank VWIV Skew 25d Term Str GEX DEX VEX P/C Spread % Call Wall Put Wall Call Vol Put Vol Call OI Put OI 2025-10-01 $168.76 $172.50 35.8% 9.3% 32.0% 24.3% 32.8% 4.7% -1.2% 1.9M -340.7M -7.3M 1.36 48.48 N/A N/A 3,733 5,075 135,042 176,029 2025-10-02 $167.19 $172.50 34.7% 9.4% 31.3% 22.2% 29.3% 5.0% 3.6% -2.9M -252.4M -7.6M 1.90 42.87 N/A N/A 3,066 5,815 136,483 179,359 2025-10-03 $168.37 $172.50 35.9% 9.0% 31.4% 24.5% 31.5% 4.9% -0.7% -766.5K -298.7M -7.6M 0.76 46.50 N/A N/A 4,355 3,296 137,026 179,952 2025-10-06 $166.53 $170.00 36.4% 10.2% 30.9% 25.4% 35.6% 4.9% -0.2% -1.5M -214.2M -7.6M 0.53 56.28 N/A N/A 5,926 3,116 123,529 179,132 2025-10-07 $165.00 $170.00 37.1% 10.1% 31.0% 26.9% 34.8% 5.1% -0.7% -3.4M -181.2M -7.4M 0.97 44.86 N/A N/A 3,949 3,831 124,695 179,634 2025-10-08 $162.87 $170.00 37.6% 10.2% 29.3% 27.7% 35.3% 4.2% -1.5% -8.1M -91.7M -7.3M 1.09 57.99 N/A N/A 5,906 6,415 126,086 181,634 2025-10-09 $160.56 $170.00 37.2% 10.2% 24.9% 26.9% 35.5% 4.5% -0.8% -12.5M 11.7M -7.3M 0.79 46.24 N/A N/A 6,254 4,910 127,093 182,352 2025-10-10 $153.87 $170.00 40.9% 11.1% 27.7% 34.0% 37.8% 5.5% -0.3% -9.8M 244.8M -7.2M 0.99 58.65 N/A N/A 11,548 11,424 127,484 182,823 2025-10-13 $157.81 $165.00 39.5% 10.6% 29.4% 31.4% 37.2% 5.6% -2.3% -7.6M 75.1M -7.5M 0.20 59.47 N/A N/A 14,002 2,785 127,651 183,410 2025-10-14 $163.69 $170.00 38.5% 10.6% 33.2% 29.4% 37.1% 6.5% -0.7% 187.4K -198.7M -7.5M 0.20 53.33 N/A N/A 7,852 1,583 131,533 184,630 2025-10-15 $163.44 $170.00 37.8% 10.7% 33.2% 28.0% 36.6% 5.6% -0.4% -764.7K -166.3M -7.5M 0.37 57.40 N/A N/A 5,581 2,042 132,581 185,042 2025-10-16 $156.69 $170.00 45.9% 12.8% 33.4% 43.4% 45.5% 8.8% -1.8% -5.8M 119.4M -7.5M 1.27 62.21 N/A N/A 6,995 8,879 133,657 185,458 2025-10-17 $156.38 $170.00 42.1% 11.9% 33.3% 36.2% 40.0% 9.1% -1.2% -2.2M 147.1M -7.4M 1.02 60.25 N/A N/A 4,957 5,032 135,219 187,823 2025-10-20 $160.44 $165.00 38.6% 11.0% 35.4% 29.5% 35.7% 7.8% -1.5% -47.6K -71.0M -7.4M 0.29 58.38 N/A N/A 16,225 4,708 120,666 177,345 2025-10-21 $161.94 $165.00 37.4% 10.7% 35.7% 27.4% 36.9% 6.3% -1.8% 6.4M -166.1M -7.6M 0.66 49.84 N/A N/A 3,120 2,073 132,759 180,067 2025-10-22 $162.10 $165.00 37.9% 10.9% 33.3% 28.3% 37.2% 10.9% -0.7% 6.7M -167.7M -7.5M 1.00 55.75 N/A N/A 6,556 6,558 133,410 180,646 2025-10-23 $155.48 $165.00 33.4% 9.6% 35.7% 19.8% 31.7% 4.8% -1.4% -5.4M 112.8M -7.1M 0.48 54.58 N/A N/A 24,186 11,550 137,376 182,642 2025-10-24 $154.88 $165.00 32.9% 9.4% 35.7% 18.8% 32.6% 4.3% 0.7% -10.7M 118.8M -7.2M 0.79 55.53 N/A N/A 6,047 4,805 143,720 186,829 2025-10-27 $153.82 $165.00 31.9% 9.5% 35.5% 17.1% 32.8% 5.0% 0.5% -2.4M 151.1M -7.0M 0.39 54.74 N/A N/A 9,912 3,856 138,644 182,930 2025-10-28 $151.71 $162.50 33.4% 9.5% 33.4% 19.7% 33.2% 3.1% 1.0% -3.2M 226.9M -7.0M 0.49 60.26 N/A N/A 10,074 4,894 144,642 184,810 2025-10-29 $149.05 $162.50 34.0% 9.6% 33.7% 21.0% 34.4% 2.6% 0.1% -8.7M 317.5M -6.9M 0.43 58.97 N/A N/A 7,131 3,068 147,541 186,956 2025-10-30 $149.16 $162.50 32.6% 9.9% 33.8% 18.3% 34.0% 3.7% 0.6% -12.8M 315.8M -7.0M 1.67 59.46 N/A N/A 4,723 7,871 149,653 187,592 2025-10-31 $146.13 $162.50 33.1% 9.6% 33.8% 19.3% 28.7% 4.4% 0.6% -19.0M 445.0M -6.9M 0.69 55.95 N/A N/A 13,399 9,281 149,613 189,383
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