BMAX Options History — September 2025 In September 2025, BMAX traded between $27.73 and $29.89. ATM implied volatility averaged 38.1%. The 30-day expected move averaged 10.2%. IV traded below realized volatility by 14.8% (HV 20d: 52.9%). Max pain ranged from $16.00 to $16.00. Net GEX was positive for 1 of 21 trading days. Term structure was in contango for 0 of 21 days. Put/call ratio averaged 0.67.
Notable Days 2025-09-05 : Highest Volume — 3 contracts2025-09-10 : Largest IV drop — 32.6% change2025-09-02 : Largest Expected Move — 15.2%Monthly Statistics Metric Avg Min Max Open Close Price $28.49 $27.73 $29.89 $29.89 $28.55 Max Pain $16.00 $16.00 $16.00 $16.00 $16.00 ATM IV 38.1% 30.8% 53.1% 53.1% 39.4% Expected Move 10.2% 8.0% 15.2% 15.2% 11.3% HV 20d 52.9% 39.0% 66.3% 62.1% 39.0% HV 60d 43.5% 41.2% 44.4% 41.2% 44.4% Term Structure -6.9% -12.6% -1.4% -7.2% -3.9% VWIV 83.5% 83.5% 83.5% 83.5% 83.5% Skew 25d 2.7% -18.9% 37.3% -18.9% -0.6% Skew 10d 3.9% -11.5% 65.7% -11.5% -2.1% Call IV 25d 37.6% 26.0% 65.8% 65.8% 47.1% Put IV 25d 40.3% 28.6% 72.9% 46.9% 46.6% Bid-Ask Spread % 136.59 129.71 142.32 136.89 138.69 Gamma HHI 0.50 0.43 0.62 0.56 0.45 Net GEX -450 -850 38 -483 -240 Net DEX 35.4K 19.9K 46.7K 19.9K 41.6K Net VEX -337 -356 -303 -350 -321 Div Yield 0.0% 0.0% 0.0% 0.0% 0.0% P/C Ratio 0.67 0.00 2.00 2.00 0.00 Total Volume 0.238 0 3 0 0 Total OI 49 46 50 46 50
Daily Data (21 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 2025-09-02 $29.89 $0.00 53.1% 15.2% 62.1% 0.0% 0.0% -18.9% -7.2% -483 19.9K -350 0.00 136.89 N/A N/A 0 0 13 33 2025-09-03 $27.94 $0.00 36.9% 10.6% 66.2% 0.0% 0.0% -5.3% -9.4% -804 43.0K -303 0.00 134.56 N/A N/A 0 0 13 33 2025-09-04 $28.51 $16.00 40.7% 8.0% 66.3% 0.0% 0.0% -4.2% -11.9% -255 32.9K -330 0.00 129.71 N/A N/A 0 0 13 33 2025-09-05 $27.73 $16.00 40.7% 8.7% 65.8% 0.0% 0.0% 3.3% -6.7% -688 37.2K -311 2.00 134.22 N/A N/A 1 2 13 33 2025-09-08 $28.41 $16.00 44.5% 8.6% 61.8% 0.0% 0.0% 5.7% -4.4% -850 46.7K -318 0.00 130.89 N/A N/A 0 0 14 35 2025-09-09 $28.04 $16.00 48.6% 9.3% 55.7% 0.0% 0.0% 5.1% -6.0% -651 36.9K -343 0.00 138.68 N/A N/A 0 0 14 35 2025-09-10 $27.91 $16.00 32.8% 9.4% 55.7% 0.0% 83.5% 2.3% -7.4% -543 38.0K -339 0.00 138.96 N/A N/A 1 0 14 35 2025-09-11 $27.91 $16.00 31.8% 9.1% 54.9% 0.0% 0.0% 2.1% -6.3% -568 37.9K -339 0.00 135.64 N/A N/A 0 0 14 35 2025-09-12 $28.41 $16.00 32.2% 9.2% 54.9% 0.0% 0.0% 2.5% -6.4% -572 34.3K -343 0.00 137.68 N/A N/A 1 0 14 35 2025-09-15 $28.40 $16.00 34.4% 9.9% 48.4% 0.0% 0.0% 7.2% -7.5% -575 33.5K -349 0.00 138.63 N/A N/A 0 0 15 35 2025-09-16 $28.69 $16.00 30.8% 8.8% 48.5% 0.0% 0.0% 9.0% -12.6% -395 33.2K -354 0.00 134.35 N/A N/A 0 0 15 35 2025-09-17 $28.22 $16.00 34.2% 9.8% 47.6% 0.0% 0.0% 3.5% -9.1% -540 35.4K -342 0.00 132.93 N/A N/A 0 0 15 35 2025-09-18 $29.19 $16.00 36.8% 10.6% 49.0% 0.0% 0.0% -0.8% -6.4% -474 28.3K -356 0.00 142.32 N/A N/A 0 0 15 35 2025-09-19 $29.21 $16.00 34.3% 9.8% 48.8% 0.0% 0.0% -1.4% -1.4% -374 28.9K -355 0.00 139.46 N/A N/A 0 0 15 35 2025-09-22 $29.01 $16.00 34.0% 9.8% 47.6% 0.0% 0.0% -4.2% -4.7% -112 31.4K -349 0.00 136.50 N/A N/A 0 0 15 35 2025-09-23 $28.35 $16.00 38.1% 10.9% 48.1% 0.0% 0.0% -1.7% -8.8% -409 35.2K -337 0.00 135.46 N/A N/A 0 0 15 35 2025-09-24 $28.76 $16.00 34.4% 9.9% 47.4% 0.0% 0.0% -2.3% -5.6% -216 33.5K -346 0.00 132.49 N/A N/A 0 0 15 35 2025-09-25 $28.64 $16.00 37.5% 10.7% 46.3% 0.0% 0.0% 37.3% -4.5% 38 34.9K -344 0.00 138.16 N/A N/A 0 0 15 35 2025-09-26 $27.73 $16.00 42.7% 12.2% 47.8% 0.0% 0.0% 2.5% -10.6% -468 38.3K -328 0.00 140.42 N/A N/A 0 0 15 35 2025-09-29 $28.77 $16.00 42.0% 12.0% 48.8% 0.0% 0.0% 15.6% -5.1% -269 43.0K -319 0.00 141.84 N/A N/A 0 0 15 35 2025-09-30 $28.55 $16.00 39.4% 11.3% 39.0% 0.0% 0.0% -0.6% -3.9% -240 41.6K -321 0.00 138.69 N/A N/A 0 0 15 35
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