What is 'To Be Announced - TBA'

To be announced (TBA) is a term describing forward-settling mortgage-backed securities (MBS) trades. Pass-through securities issued by Freddie Mac, Fannie Mae and Ginnie Mae trade in the TBA market, and the term TBA is derived from the fact that the actual mortgage-backed security that will be delivered to fulfill a TBA trade is not designated at the time the trade is made. The securities are announced 48 hours prior to the established trade settlement date.

BREAKING DOWN 'To Be Announced - TBA'

A TBA serves as a contract to purchase or sell an MBS on a specific date, but it does not include information regarding the pool number, number of pools or the exact amount that will be included in the transaction. This is because the TBA market assumes MBS pools to be relatively interchangeable. The TBA process increases the overall liquidity of the MBS market by taking thousands of different MBS with different characteristics and trading them through a handful of contracts. The buyers and sellers of TBA trades agree on these parameters: issuer, maturity, coupon, price, par amount and settlement date.

To Be Announced Trade Settlement

The settlement procedures of MBS-TBA trades are established by the Bond Market Association. Each type of agency pass-through security is given a trade settlement date for each month. Trade counterparties are required to exchange pool information by 3:00 p.m. (EST) 48 hours prior to the established settlement date. Trades are allocated in $1 million lots.

To Be Announced Trade Risks

Due to the forward-settling nature of the investment, the risk of counterparty default is present during the period of time between the execution of the trade and the actual settlement. The risk associated with this form of default is that, especially in highly volatile markets, the nondefaulting party will be unable to secure a deal with similar terms once the defaulting party’s intentions are known. Risk may be mitigated through the assignment of collateral to the transaction, though not all firms have immediate access to collateral management services.

In January 2014, when average daily trading volumes in the TBA market were reaching over $186 billion, the Financial Industry Regulatory Authority (FINRA) set margin requirements designed to assist in lowering risks for TBA transactions with longer settlement dates. This rule only applies to specific individuals or institutions and is not deemed necessary for transactions with short settlement periods.

Mortgage-Backed Securities

An MBS is a bond that is secured, or backed, by mortgage loans. Loans with similar traits are grouped together to form a pool, and that pool is subsequently sold to stand as collateral for the associated MBS. Interest and principal payments are issued to investors at a rate based on the principal and interest payments made by the borrowers of the associated mortgages. Investors receive interest payments on a monthly basis instead of semiannually.

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