GLOSSARY Terms related to the Federal Reserve, banking and economics   A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z |   Office of the Comptroller of the Currency (OCC)   Office of Thrift Supervision (OTS) A bureau of the Treasury Department, established in August 1989, which has the authority to charter federal thrift institutions and serve as the primary regulator of approximately 2,000 federal and state-chartered thrifts.   open-end credit A line of credit that may be used repeatedly up to a certain limit, also called a charge account or revolving credit.   open-end lease A lease that may involve a balloon payment based on the value of the property when it is returned. Also called finance lease.   OTC margin bond A debt security not traded on the national securities exchange, which meets certain Regulation T requirements as to size of original offering, available information and status of interest payments.   over the counter (OTC ) Figurative term for the means of trading securities that are not listed on an organized stock exchange such as the New York Stock Exchange, as in OTC margin bonds. OTC trading is done by broker-dealers who communicate by telephone and computer networks.   overdraft checking account A checking account associated with a line of credit that allows a person to write checks for more than the actual balance in the account, with a finance charge on the overdraft.