MEMX Options History — October 2025 In October 2025, MEMX traded between $33.06 and $35.80. ATM implied volatility averaged 55.1%. The 30-day expected move averaged 11.5%. IV traded above realized volatility by 13.7% (HV 20d: 41.4%). Net GEX was positive for 0 of 23 trading days. Term structure was in contango for 0 of 23 days.
Notable Days 2025-10-13 : Largest IV spike — 77.6% change2025-10-02 : Largest Expected Move — 16.6%Monthly Statistics Metric Avg Min Max Open Close Price $34.25 $33.06 $35.80 $34.00 $35.40 ATM IV 55.1% 30.1% 132.8% 43.6% 43.7% Expected Move 11.5% 7.7% 16.6% 12.5% 12.5% HV 20d 41.4% 32.1% 46.9% 32.1% 44.2% HV 60d 31.6% 28.0% 34.2% 29.1% 34.1% Term Structure -13.9% -34.6% -4.7% -21.4% -17.8% Skew 25d -0.2% -28.2% 6.7% 1.7% -1.3% Skew 10d 0.9% -29.1% 14.1% 12.1% 8.6% Call IV 25d 42.3% 30.0% 63.2% 47.6% 44.1% Put IV 25d 42.1% 14.0% 69.9% 49.3% 42.8% Bid-Ask Spread % 168.43 166.27 172.24 166.96 167.09 Net GEX 0 0 0 0 0 Net DEX 0 0 0 0 0 Net VEX 0 0 0 0 0 Div Yield 0.0% 0.0% 0.0% 0.0% 0.0% Total Volume 0 0 0 0 0 Total OI 0 0 0 0 0
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 $34.00 $0.00 43.6% 12.5% 32.1% 0.0% 0.0% 1.7% -21.4% 0 0 0 0.00 166.96 N/A N/A 0 0 0 0 2025-10-02 $33.06 $0.00 58.0% 16.6% 33.9% 0.0% 0.0% 6.7% -34.6% 0 0 0 0.00 167.11 N/A N/A 0 0 0 0 2025-10-03 $34.00 $0.00 50.4% 14.5% 35.2% 0.0% 0.0% 0.5% -28.1% 0 0 0 0.00 166.27 N/A N/A 0 0 0 0 2025-10-06 $33.06 $0.00 84.4% 12.3% 36.8% 0.0% 0.0% -28.2% -12.6% 0 0 0 0.00 168.85 N/A N/A 0 0 0 0 2025-10-07 $34.00 $0.00 59.4% 8.6% 38.1% 0.0% 0.0% -1.3% -6.9% 0 0 0 0.00 169.39 N/A N/A 0 0 0 0 2025-10-08 $34.00 $0.00 66.8% 9.4% 38.1% 0.0% 0.0% 1.9% -7.4% 0 0 0 0.00 168.91 N/A N/A 0 0 0 0 2025-10-09 $35.28 $0.00 53.5% 7.7% 40.0% 0.0% 0.0% 1.6% -4.7% 0 0 0 0.00 169.19 N/A N/A 0 0 0 0 2025-10-10 $33.06 $0.00 74.8% 10.2% 46.9% 0.0% 0.0% 1.7% -8.1% 0 0 0 0.00 172.24 N/A N/A 0 0 0 0 2025-10-13 $33.06 $0.00 132.8% 13.1% 46.9% 0.0% 0.0% -4.4% -14.5% 0 0 0 0.00 169.32 N/A N/A 0 0 0 0 2025-10-14 $33.06 $0.00 132.2% 11.9% 46.9% 0.0% 0.0% -2.3% -11.7% 0 0 0 0.00 169.50 N/A N/A 0 0 0 0 2025-10-15 $33.06 $0.00 48.4% 13.9% 41.9% 0.0% 0.0% -5.5% -15.8% 0 0 0 0.00 168.52 N/A N/A 0 0 0 0 2025-10-16 $34.00 $0.00 40.2% 11.5% 37.8% 0.0% 0.0% 3.8% -12.3% 0 0 0 0.00 168.16 N/A N/A 0 0 0 0 2025-10-17 $34.00 $0.00 38.4% 11.0% 37.8% 0.0% 0.0% 3.2% -10.5% 0 0 0 0.00 168.96 N/A N/A 0 0 0 0 2025-10-20 $35.57 $0.00 30.1% 8.6% 40.8% 0.0% 0.0% 2.4% -7.2% 0 0 0 0.00 168.20 N/A N/A 0 0 0 0 2025-10-21 $34.00 $0.00 41.1% 11.8% 43.7% 0.0% 0.0% 3.5% -14.1% 0 0 0 0.00 168.80 N/A N/A 0 0 0 0 2025-10-22 $34.00 $0.00 40.5% 11.6% 43.6% 0.0% 0.0% 3.7% -12.6% 0 0 0 0.00 168.35 N/A N/A 0 0 0 0 2025-10-23 $34.00 $0.00 43.2% 12.4% 42.5% 0.0% 0.0% 2.3% -15.2% 0 0 0 0.00 168.95 N/A N/A 0 0 0 0 2025-10-24 $34.00 $0.00 46.0% 13.2% 42.5% 0.0% 0.0% 0.6% -16.9% 0 0 0 0.00 168.81 N/A N/A 0 0 0 0 2025-10-27 $35.80 $0.00 33.0% 9.5% 46.3% 0.0% 0.0% 1.3% -9.1% 0 0 0 0.00 168.04 N/A N/A 0 0 0 0 2025-10-28 $35.80 $0.00 34.7% 9.9% 46.2% 0.0% 0.0% 1.3% -13.3% 0 0 0 0.00 167.66 N/A N/A 0 0 0 0 2025-10-29 $35.80 $0.00 36.5% 10.5% 46.2% 0.0% 0.0% 0.3% -12.5% 0 0 0 0.00 167.29 N/A N/A 0 0 0 0 2025-10-30 $35.80 $0.00 36.6% 10.5% 44.8% 0.0% 0.0% 1.0% -12.7% 0 0 0 0.00 167.30 N/A N/A 0 0 0 0 2025-10-31 $35.40 $0.00 43.7% 12.5% 44.2% 0.0% 0.0% -1.3% -17.8% 0 0 0 0.00 167.09 N/A N/A 0 0 0 0
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