Lexington Partners and AlpInvest Partners announced they are buying 50% of portfolio companies owned by JPMorgan Chase & Co.’s One Equity Partners, a private equity unit. The private equity firm plans to start a new investment advisory firm; OEP Capital Advisors LP, and become independent of JPMorgan Chase once the transaction is done. The new firm will continue to manage the assets being sold along with the investments JPMorgan Chase will retain. One Equity Partners managed investments valued at over $4 billion. The terms of the deal, which is expected to close by the end of the year, have not been disclosed.