General Partner (GP) à In general usage, the term General Partner, or GP, refers to a private equity firm, or fund manager / advisory or investment management company (AMC).
Institutional Investors à Pension and endowment funds, insurance companies and other major financial institutions who invest capital in private equity funds.
Limited Partner (LP) à Generic term for Investors in a private equity fund.
Portfolio Company à A company which has received funding from a private equity fund and therefore constitutes part of its Portfolio. Also known as an Investee Company. In other words, a company in which the Private Equity firm has invested into.