Sells government securities to raise funds. Short-term issuances of government securities allow the government to obtain cash until tax revenues are collected.
CommercialBanks
Issues treasury securities; sell certificates of deposits and extends loans; offer individual investor accounts that can be used to invest in money markets.
Privateindividual
Made their investment through money market mutual funds.
Commercial Non-Financial Institutions
Buy and sell money market securities to manage their cash i.e. to temporarily store excess funds in exchange of somewhat higher return and obtain short-term funds.
Investmentcompanies
Trade securities in behalf of their clients. Makes a market for money market securities through maintaining an inventory of financial instruments that can be bought or sold.
Finance/Commercial leasing companies
Raise money market instruments i.e. to commercial paper to lend funds to individual borrowers.
Insurance companies
Invest on money market to maintain liquidity level in case of unexpected demands most especially for property and casualty insurance companies.
Pension funds
Maintain funds in money market as preparation for long-term investing in stocks and bonds market.