going long: When you own a security or other asset, you are said to be long that security. When you go long (that is, buy) a security, you’re bullish, or positive on the market, and you expect the price of that security to go up.

Government-Sponsored Enterprise; GSE: Privately held corporations created by Congress to work for the common good—generally to facilitate borrowing for homeowners, farmers, and other specific groups. Examples of GSEs include Fannie Mae, Freddie Mac, and the Federal Farm Credit Bank.