Which one of the following is not a 'Money Market Instrument'?

Money market instruments are debt securities that generally give the owner the unconditional right to receive a stated, fixed sum of money on a specified date.

There are several money market instruments in most Western countries, including treasury bills, commercial paper, bankers' acceptances, deposits, certificates of deposit, bills of exchange, repurchase agreements, federal funds, and short-lived mortgage- and asset-backed securities.