Thrive Capital has announced the close of its largest fund to date. : It’s a good week to be Josh Kushner, venture capitalist, founder of the health insurance unicorn Oscar, brother to President Donald Trump’s senior advisor Jared Kushner and son of real estate tycoon Charles Kushner. Days after marrying supermodel Karlie Kloss, Kushner’s VC firm Thrive Capital has announced the close of $1 billion in new capital for its sixth flagship venture fund. The firm has raised $600 million for late-stage deals and an additional $400 million for earlier bets.