M2 consists of M1 plus (1) small-denomination time deposits (time deposits in amounts of less than $100,000) less individual retirement account (IRA) and Keogh balances at depository institutions; and (2) balances in retail money market funds (MMFs) less IRA and Keogh balances at MMFs. Seasonally adjusted M2 is constructed by summing small-denomination time deposits and retail MMFs, each seasonally adjusted separately, and adding the result to seasonally adjusted M1.