Exchange of cash flows between loans
A PTRS is a simple exchange of cash flows between two counterparties based on a notional amount. On one side, the buyer, taking a long position on commercial property, pays a fixed percentage interest rate or LIBOR plus a spread. In return, he or she receives a cashflow based on the annual total return of the property index. The seller, taking the equivalent short position, pays and receives cashflows that are exactly opposite.
The interest rate used by the market is typically the three-month LIBOR. The spread that is added reflects expectations of the future performance of the index, and what buyers and sellers are prepared to accept to take the position (see the property spread). In January 2008, many banks switched from the LIBOR-based to a fixed interest rate convention.
In the event that the annual total return is negative, i.e. if the capital value drops sufficiently to wipe out income returns, the total return buyer pays that negative return to the seller, in addition to the quarterly interest payments. The property index commonly used is an annual index, which is based on the actual performance of a large number of institutional portfolios and comprises an income or rental and a capital growth element.
In addition to swaps, contracts-for-difference (CFDs) are used as trading instruments. For deals on residential indices, such as the Halifax House Price Index, CFDs are already common. A CFD represents an index that is artificially set at 100 when the deal is done. Investors and hedgers then state the price at which they are willing to buy or sell the index at maturity. If two counterparties agree on a three-year deal at 112 and the index rises to 116, then the buyer receives 116 ? 112 = 4 times the contract size from the seller. The transactions are cash free until maturity, when profits and losses are settled. Many market participants find CFDs more intuitive than swaps.
The Credit Property Total Return Swap
By December 2007, property derivatives deals have been made public in Australia, France, Germany, Hong Kong, Italy, Japan, Switzerland, the UK and the US. Deals were referenced to both commercial and residential properties. Derivatives that reflect commercial real estate are typically tied to appraisal-based indices while derivatives that reflect owner-occupied residential housing usually use transaction-based indices as the underlying instrument (see property indices).
Most contracts are still executed as matched bargain trades between a buyer and a seller, with pricing determined through negotiations between them. As the market becomes more liquid, standardized contracts will become available directly from intermediaries. They will price the contracts and assume the risk of finding a suitable counterparty.
Several derivative structures have been developed and traded. So far, the bulk of trades has been structured as over-the-counter (OTC) swap contracts. In addition, a few derivatives are listed and traded on public exchanges. Most market participants are aiming to create derivatives that replicate the familiar characteristics of direct property investment, i.e. quarterly rental income and annual capital growth. As the market expands, the variety of structures increases. Derivative markets have a particular order of development and it is not unusual for options to develop after futures and swaps, because the option writers require these instruments to be liquid in order to hedge their positions.
The Property Total Return Swap (PTRS) is the most popular format and, in principle, swaps a fixed or floating interest payment for an amount calculated with reference to total returns on the property index, which consists of both rental income and capital gains (see swap transactions). The swap structure is quite simple and the variations usually only involve the choice of the index (country, sector and rental, and/or capital growth index), the tenor and the payment conventions.

