Borish is chairman and CEO of Computer Trading Corporation (CTC), and a current investor and advisor to 444 Capital, the D'Amelio family fund.
Borish also served as the CEO and member of the board of Twinfields Capital Management, a global macro hedge fund focused on the fixed income sector, from 2005 to 2008.
[12][4][13][14][15] In addition to the foregoing leadership positions, Borish has also served as a board advisor of ValueStream Labs, an accelerator for financial services technologies, since 2013 and as a trustee of RMB Investors Trust, an open-end management investment company since 2015.
Borish has engaged in substantial philanthropy and nonprofit work, having helped found, and, since 1988, having served on the board of directors of, the Robin Hood Foundation,[16][17] which funds New York City educational projects for disadvantaged children.
[1][2][19] Borish is a founding board member of the Robin Hood Foundation (along with Paul Tudor Jones and Glenn Dubin),[16][17] a charitable organization that attempts to alleviate problems caused by poverty in New York City.
[20][21] He is also a founding board member of Math for America, a nonprofit organization that seeks to improve mathematics education in United States public schools.