As a student, Horwitz worked on biotech startups.[4][5] While at Harvard, Horwitz met Sam Koppelman, with whom he would later found Mayday Health and Hunterbrook.[6][7]
Career
After graduating from Harvard, Horwitz joined RA Capital Management, a healthcare-focused investment firm.[8] While at RA Capital, Horwitz launched biotech companies.[9] He left RA Capital in 2023, before founding Hunterbrook.[10]
In 2022 Horwitz co-founded Mayday Health with Koppelman and Liv Raisner.[11] The 501(c)(3) nonprofit educates on abortion access and advocated for laws to shield healthcare providers who send abortion medicine to people in states with abortion bans.[12]
In 2023, Horwitz and Koppelman founded Hunterbrook, an investment fund and investigative journalism outlet,[13][14] with Horwitz as CEO. Hunterbrook later $100 million in 2024 "to make trades based on articles by its affiliated newsroom".[15][16] The company's name is partially derived from Horwitz's mother's last name.[17]
↑Sachs, Matt LevineMatt Levine is a Bloomberg Opinion columnist A. former investment banker at Goldman; Mergers, He Was a; Wachtell, acquisitions lawyer at; Lipton; Rosen; Circuit, Katz; a clerk for the U. S. Court of Appeals for the 3rd; Dealbreaker, an editor of (2024-04-02). "A Hedge Fund That's Also a Newspaper". Bloomberg.com. Retrieved 2025-10-10.{{cite news}}: |first7= has generic name (help)CS1 maint: multiple names: authors list (link) CS1 maint: numeric names: authors list (link)
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