Pedestrians walk near the New York Stock Exchange (NYSE) in New York, U.S., on Friday, Oct. 7, 2016. U.S. stocks fell after jobs data showing steady growth in the labor market likely kept the Federal Reserve on track to tighten monetary policy this year as investors turn to the third-quarter earnings season. (Bloomberg/Bloomberg via Getty Images)

Merriam-Webster's Dictionary defines "speculation" in 31 words. The key ones are "risk of a large loss." When Paul Volcker, the former U.S. Federal Reserve chairman,  in January 2009 proposed banning speculation by federally insured banks to reduce risk to the world economy, he did it in one paragraph. Four years later, the nation's regulators issued a final rule based on Volcker's proposal. It ran close to 100 pages, with hundreds more in supporting material — and no one was quite sure how it would be enforced. While that was being figured out, still more paper piled up in bank lawsuits challenging parts of the rule and in lobbying drives for regulatory tweaks and extensions. By the time the rule finally took effect in July 2015, it had become a lesson in how complicated simplifying Wall Street can be.

The Situation

True to his campaign promise, President Donald Trump on Feb. 3 signed an order to review the Volcker Rule and other regulations growing out of the 2010 Dodd-Frank financial reform law. A House Republican proposal to change the Dodd-Frank law would waive the Volcker Rule if banks increase their capital. But because Republicans lack the Democratic votes they would need to amend the law, the White House wants the five regulatory agencies that wrote the rule under the Barack Obama administration to rewrite it and soften its effect. Trump's choice to lead the Fed, Jerome Powell, has supported a similar strategy. Regulators began working on a potential revision in July 2017, following a U.S. Treasury report that suggested several small changes to give banks more leeway. Most banks have shut down the desks they used for trading for their own accounts – what's known as proprietary trading – but weakening the Volcker Rule could make it easier to do other kinds of bank trading. One involves the steady stream of securities banks buy, sell and hold so their customers can always buy what they want to buy and sell what they want to sell, an activity called market-making. Another involves trades to offset the risks of a bank's own transactions, known as hedging. The rule approved in December 2013 was more lenient on market-making and tougher on hedging than was originally proposed: Regulators had grown wary after JPMorgan Chase's $6.2 billion London Whale loss, which many saw as closer to gambling than to hedging. In the European Union, regulators hope to put their own, even narrower rules in place – by 2020.

The Background

After the Great Depression, Congress created federal deposit insurance to prevent runs at commercial banks. In return, the banks had to concentrate on making loans while leaving the fancy stuff to investment banks. That dividing line blurred in the '90s and was erased entirely in 1999 when the Glass-Steagall Act was repealed at the behest of banks like Citigroup that promptly grew big trading operations. The financial crisis of 2008 had its seeds in bad mortgages, but what brought banks to the brink, Volcker noted when he proposed his idea, wasn't bad loans but the exotic trades they had made around them. The six largest U.S. banks made $15.6 billion in trading profits during 13 of the 18 quarters that spanned mid-2006 to 2010. They racked up bigger losses during the five remaining quarters when their bets turned sour. Even after the meltdown and unpopular taxpayer bailouts, taking a step back toward Glass-Steagall met Wall Street resistance. That's why, when President Obama adopted the idea, he wrapped it in Volcker's name, in the hope that the towering stature of the man who tamed 1970s inflation would lend it greater weight. The idea became law in the Dodd-Frank reforms of 2010, but the rule-writing took another three years.

The Argument

Even after the Volcker Rule regulations were released, many on Wall Street continued to insist that they would prove unworkable. Distinguishing between different categories of trades and assessing appropriate risks is either impossible or highly subjective, they say. Jamie Dimon, the chief executive officer of JPMorgan Chase, said in 2012 that every trader would need a psychologist and a lawyer by his side to make sure he wasn't breaking the rule. Volcker responded that the rule could accommodate a range of trading and still stay fairly simple. "It's like pornography," Volcker said of prop trades. "You know it when you see it." Instead of blanket bans, however, regulators sought to define each situation and carve out a string of exemptions, which is how the rule grew and grew. A small band of bipartisan voices in Washington continued to say they would rather push for a more radical simplification — bringing back Glass-Steagall — if the Volcker Rule proves tougher on paper than in practice. For the most part, by the time the rule took effect, many in the investment world seemed to have learned to live with it, though investors and congressional Republicans worried that new risks had been created in the effort to stamp out old ones.

First published Dec.

To contact the writer of this QuickTake: Yalman Onaran in New York at yonaran@bloomberg.net.

To contact the editor responsible for this QuickTake: Paula Dwyer at pdwyer11@bloomberg.net.

©2017 Bloomberg L.P.