repurchase transaction means a transaction governed by an agreement by which a counterparty transfers securities or guaranteed rights relating to title to securities where that guarantee is issued by a recognised exchange which holds the rights to the securities and the agreement does not allow a counterparty to transfer or pledge a particular security to more than one counterparty at a time, subject to a commitment to repurchase them, or substituted securities of the same description at a specified price on a future date specified, or to be specified, by the transferor, being a repurchase agreement for the counterparty selling the securities and a reverse repurchase agreement for the counterparty buying them;