Investor · New York, NY
Bart Baum
Open Bart in the network graph →Filings
135
SEC Form D
Connections
79
co-filers
Capital
$38.3B
across filings
Active
Mar 2009
to Jan 2026
Most-connected co-filers (79)
Ionic Capital Management Llc · New York, NY131 sharedDaniel Stone · New York, NY131 sharedJohn Richardson · New York, NY131 sharedIonic Capital Management Llc · New York, NY130 sharedStuart Berman · New York, NY112 sharedJon Nagel · New York, NY92 sharedMatthew Begley · New York, NY90 sharedIonic Capital Management Llc · New York, NY87 sharedIonic Capital Advisors Llc · New York, NY83 sharedArthur Vaccarino · New York, NY76 sharedIonic Capital Advisors Llc · New York, NY59 sharedAdam Radosti · New York, NY51 sharedScott E. Dakers · Grand Cayman, Cayman Islands51 sharedDavid Dietz · New York, NY46 sharedAnchor Bolt Capital, LP · Chicago, IL39 sharedK. A. Macfarlane · Menlo Park, CA39 sharedDawn Cummings-Fritz · Schaumburg, IL37 sharedDavid S. Sargison · Bodden Town, Grand Cayman, Cayman Islands36 sharedSteven Vecchio · New York, NY31 sharedRichard Heymann · Carlsbad, CA20 sharedCathleen Kilgallen · Oakland, CA20 sharedMartin S. Lang · Grand Cayman, Cayman Islands17 sharedJohn R. Tozzi · Jackson, WY17 sharedDoug Mallach · New York, NY14 shared
Recent filings (135)
Foundation Devices, Inc.Jan 2026 · 2 co-filers$13.4MIonic Relative Value Volatility Fund LLCJan 2026 · 6 co-filersIonic Volatility Arbitrage Fund II LLCNov 2025 · 9 co-filersIonic Value Fund LLCNov 2025 · 9 co-filersIonic Volatility Arbitrage Fund II Ltd.May 2025 · 17 co-filersIonic Convex Strategies Fund LLCApr 2025 · 14 co-filersIonic Capital LLCMar 2025 · 11 co-filersIonic Capital International LtdMar 2025 · 19 co-filersIonic Relative Value Volatility Fund LLCJan 2025 · 9 co-filersIonic Value Fund LLCNov 2024 · 10 co-filersIonic Volatility Arbitrage Fund II LLCNov 2024 · 10 co-filersIonic Volatility Arbitrage Fund II Ltd.May 2024 · 19 co-filersIonic Convex Strategies Fund LLCApr 2024 · 14 co-filersIonic Capital LLCMar 2024 · 11 co-filersIonic Capital International LtdMar 2024 · 19 co-filersIonic Volatility Arbitrage Fund II LLCNov 2023 · 11 co-filersIonic Value Fund LLCNov 2023 · 19 co-filersIonic Volatility Arbitrage Fund II Ltd.May 2023 · 19 co-filersIonic Capital LLCMar 2023 · 11 co-filersIonic Capital International LtdMar 2023 · 19 co-filersTerrapin Realization Fund, LLCFeb 2023 · 8 co-filersIonic Value Fund LLCNov 2022 · 19 co-filersIonic Volatility Arbitrage Fund II LLCNov 2022 · 11 co-filersIonic Volatility Arbitrage Fund II LLCOct 2022 · 11 co-filersIonic Volatility Arbitrage Fund II Ltd.May 2022 · 19 co-filers
Derived from public SEC Form D (Reg D) filings; entities resolved probabilistically. See Bart in the interactive graph →