- plural form of security
securities - Investment & Finance Definition
Financial instruments such as stocks, bonds, futures, or options contracts. Securities may be traded on organized exchanges or on over-the-counter exchanges.
securities - Legal Definition
Stocks, bonds, and the like; any instrument of secured indebtedness or of a right to participate in the profits or assets of a profit making concern. Traditionally, securities have been a major area of investment and speculation by individuals and banks.