SPMB Options History — September 2025 In September 2025, SPMB traded between $22.09 and $22.59. ATM implied volatility averaged 28.3%, placing in the 13.8% IV rank vs the trailing year. The 30-day expected move averaged 7.2%. IV traded above realized volatility by 23.4% (HV 20d: 4.9%). Max pain ranged from $21.00 to $21.00. Net GEX was positive for 21 of 21 trading days. Term structure was in contango for 0 of 21 days.
Notable Days 2025-09-10 : Largest IV drop — 44.9% change2025-09-09 : Highest IV Rank — 24.8%2025-09-03 : Largest Expected Move — 9.1%Monthly Statistics Metric Avg Min Max Open Close Price $22.41 $22.09 $22.59 $22.09 $22.43 Max Pain $21.00 $21.00 $21.00 $21.00 $21.00 ATM IV 28.3% 22.8% 43.9% 31.6% 25.1% Expected Move 7.2% 6.1% 9.1% 9.0% 7.2% HV 20d 4.9% 4.4% 5.3% 4.4% 4.5% HV 60d 4.5% 4.4% 4.6% 4.6% 4.4% IV Rank 13.8% 9.9% 24.8% 16.1% 11.6% IV Percentile 24.5% 2.0% 61.9% 38.1% 17.1% Term Structure -7.8% -11.6% -3.6% -10.3% -11.6% Skew 25d -4.1% -29.3% 21.8% -29.3% -4.6% Skew 10d 4.3% -4.1% 22.7% -1.8% 2.0% Call IV 25d 30.8% 11.8% 41.7% 40.8% 40.3% Put IV 25d 26.7% 11.5% 35.7% 11.5% 35.7% Bid-Ask Spread % 149.89 146.16 152.41 149.66 149.79 Gamma HHI 0.49 0.44 0.57 0.49 0.45 Net GEX 1.1K 312 2.9K 945 384 Net DEX -10.6K -18.5K -3.8K -7.5K -4.4K Net VEX -73 -115 -37 -115 -37 Div Yield 0.0% 0.0% 0.0% 0.0% 0.0% Total Volume 0 0 0 0 0 Total OI 54 32 65 65 32
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 $22.09 $21.00 31.6% 9.0% 4.4% 16.1% 0.0% -29.3% -10.3% 945 -7.5K -115 0.00 149.66 N/A N/A 0 0 40 25 2025-09-03 $22.16 $21.00 31.8% 9.1% 4.5% 16.2% 0.0% -27.9% -10.6% 1.1K -9.1K -112 0.00 148.42 N/A N/A 0 0 40 25 2025-09-04 $22.24 $21.00 33.4% 6.1% 4.6% 17.4% 0.0% 0.5% -3.6% 1.2K -10.9K -110 0.00 152.12 N/A N/A 0 0 40 25 2025-09-05 $22.36 $21.00 36.5% 6.5% 4.9% 19.6% 0.0% 0.6% -4.9% 1.3K -13.6K -111 0.00 152.41 N/A N/A 0 0 40 25 2025-09-08 $22.46 $21.00 40.9% 6.7% 4.9% 22.7% 0.0% 0.8% -5.2% 1.5K -15.8K -101 0.00 152.08 N/A N/A 0 0 40 25 2025-09-09 $22.43 $21.00 43.9% 6.9% 5.0% 24.8% 0.0% 0.6% -7.0% 1.4K -15.1K -98 0.00 148.83 N/A N/A 0 0 40 25 2025-09-10 $22.46 $21.00 24.2% 6.9% 5.0% 10.9% 0.0% 0.6% -5.8% 1.5K -15.7K -96 0.00 152.26 N/A N/A 0 0 40 25 2025-09-11 $22.52 $21.00 23.9% 6.9% 4.9% 10.7% 0.0% 0.6% -5.5% 1.6K -17.1K -93 0.00 151.82 N/A N/A 0 0 40 25 2025-09-12 $22.49 $21.00 24.3% 7.0% 4.6% 11.0% 0.0% 1.9% -5.9% 2.9K -16.5K -81 0.00 146.46 N/A N/A 0 0 40 25 2025-09-15 $22.59 $21.00 24.5% 7.0% 4.8% 11.1% 0.0% -14.6% -6.2% 1.8K -18.5K -79 0.00 146.16 N/A N/A 0 0 40 25 2025-09-16 $22.56 $21.00 24.9% 7.1% 4.8% 11.4% 0.0% 0.5% -6.5% 1.6K -17.8K -73 0.00 151.21 N/A N/A 0 0 40 25 2025-09-17 $22.52 $21.00 25.2% 7.2% 4.9% 11.6% 0.0% 0.5% -6.9% 1.6K -16.9K -70 0.00 150.28 N/A N/A 0 0 40 25 2025-09-18 $22.41 $21.00 26.4% 7.6% 5.3% 12.5% 0.0% 0.3% -7.4% 1.4K -14.2K -64 0.00 151.47 N/A N/A 0 0 40 25 2025-09-19 $22.45 $21.00 26.8% 7.7% 5.3% 12.7% 0.0% -0.6% -7.6% 332 -4.4K -50 0.00 151.47 N/A N/A 0 0 40 25 2025-09-22 $22.39 $21.00 28.5% 8.2% 5.0% 13.9% 0.0% -20.4% -9.0% 331 -3.8K -45 0.00 146.62 N/A N/A 0 0 21 11 2025-09-23 $22.45 $21.00 28.9% 8.3% 5.0% 14.3% 0.0% 21.8% -9.1% 312 -4.3K -42 0.00 149.16 N/A N/A 0 0 21 11 2025-09-24 $22.41 $21.00 22.8% 6.5% 5.0% 9.9% 0.0% -6.9% -9.8% 450 -4.2K -40 0.00 146.62 N/A N/A 0 0 21 11 2025-09-25 $22.39 $21.00 22.8% 6.5% 5.1% 9.9% 0.0% -3.3% -10.0% 352 -4.1K -41 0.00 150.31 N/A N/A 0 0 21 11 2025-09-26 $22.38 $21.00 23.3% 6.7% 5.0% 10.3% 0.0% -3.3% -9.8% 346 -4.0K -40 0.00 150.66 N/A N/A 0 0 21 11 2025-09-29 $22.44 $21.00 24.4% 7.0% 5.1% 11.0% 0.0% -4.4% -10.8% 386 -4.5K -38 0.00 149.88 N/A N/A 0 0 21 11 2025-09-30 $22.43 $21.00 25.1% 7.2% 4.5% 11.6% 0.0% -4.6% -11.6% 384 -4.4K -37 0.00 149.79 N/A N/A 0 0 21 11
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