By Katy Burne 

International market supervisors, moving to fortify so-called "clearinghouses" that act as a key safety net for the financial system, are taking lessons from bank stress tests, said people familiar with the discussions.

Supervisors at the Bank for International Settlements' Committee on Payments and Market Infrastructures and the International Organization of Securities Commissions have been reaching out to officials involved with bank stress tests to ask how similar measures could work for their monitoring of clearinghouses, the people said.

Conceived in 2009 by the Federal Reserve, the stress tests are once-a-year snapshots of big banks' health, aimed at making sure large lenders have enough capital to weather a market shock or economic downturn. Supervisors want to make sure clearinghouses that backstop large volumes of derivatives trades called swaps are just as resilient.

Clearinghouses such as CME Group Inc. and LCH.Clearnet Group Ltd. are supposed to help prevent a market-wide collapse by ensuring either party in a swap would get paid if the other side falters. Swaps allow users to hedge or speculate on moves in everything from interest rates to the price of fuel.

International standards already require clearinghouses to carry out routine and rigorous stress tests to gauge their likely response in a range of hypothetical, extreme market scenarios.

Earlier this year, CPMI and IOSCO said they had begun reviewing those internal tests, as part of their attempts to take stock of how clearinghouse practices differ from company to company. They have also been asking market participants for more information about how the standards are being met, or to determine if more guidance is needed.

The goal now is to make sure those clearinghouses have the financial wherewithal to withstand severe market conditions, in particular after postcrisis regulations have pushed waves of swaps into clearinghouses that they previously didn't have to process.

The moves to learn from bank stress testing come as J.P. Morgan Chase & Co. and others have pushed clearinghouses to contribute larger resources from their own coffers or "skin in the game" to withstand a crisis, including a tumult caused by the default of its member firms.

Regulators and industry professionals are quick to point out that there are differences between bank and clearinghouse business models that could make applying details of the bank stress tests to clearers challenging.

"A level of standardization is possible, but context is required around what each clearing house does, and how they risk manage and protect themselves," said Daniel Maguire, global head of clearinghouse operator LCH's SwapClear service and listed rates.

Nonetheless, CMPI and IOSCO are reaching out to members of clearinghouses and others with insight into bank stress testing processes to see how those challenges may be overcome, according to people involved with the clearinghouse reviews.

Routine and standardized stress testing, like in the case of banks, is one possibility for clearinghouses, some of those people said.

CPMI and IOSCO are both bodies that help to set standards across global financial markets and work to promote the safety and soundness of clearing and trading systems.

For a clearinghouse to exhaust all of its capital, prompting regulators to step in, it would have to eat through all the cash and assets it holds from a defaulting member firm, its own contributions, a mutualized fund for covering defaults and other layers of obligations in the so-called "waterfall."

Write to Katy Burne at katy.burne@wsj.com

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