A few months ago, I came across an announcement that Citigroup, the parent company of Citibank, was to be honored, along with its chief executive, Vikram Pandit, for “Advancing the Field of Asset Building in America.” This seemed akin to, say, saluting BP for services to the environment or praising Facebook for its commitment to privacy. During the past decade, Citi has become synonymous with financial misjudgment, reckless lending, and gargantuan losses: what might be termed asset denuding rather than asset building. In late 2008, the sprawling firm might well have collapsed but for a government bailout. Even today the U.S. taxpayer is Citigroup’s largest shareholder.

For years, the most profitable industry in America has been one that doesn’t design, build, or sell a single tangible thing. Illustration by Joost Swarte

The award ceremony took place on September 23rd in Washington, D.C., where the Corporation for Enterprise Development, a not-for-profit organization dedicated to expanding economic opportunities for low-income families and communities, was holding its biennial conference. A ballroom at the Marriott Wardman Park was full of government officials, lawyers, tax experts, and community workers, two of whom were busy at my table lamenting the impact of budget cuts on financial-education programs in Vermont.

Pandit, a slight, bespectacled fifty-three-year-old native of Nagpur, in western India, was seated near the front of the room. Fred Goldberg, a former commissioner of the Internal Revenue Service who is now a partner at Skadden, Arps, introduced him to the crowd, pointing out that, over the years, Citi has taken many initiatives designed to encourage entrepreneurship and thrift in impoverished areas, setting up lending programs for mom-and-pop stores, for instance, and establishing savings accounts for the children of low-income families. “When the history is written, Citi will be singled out as one of the pioneers of the asset movement,” Goldberg said. “They have demonstrated the capacity, the vision, and the will.”

Pandit, who moved to the United States at sixteen, is rarely described as a communitarian. A former investment banker and hedge-fund manager, he sold his investment firm to Citigroup in 2007 for eight hundred million dollars, earning about a hundred and sixty-five million dollars for himself. Eight months later, after Citi announced billions of dollars in writeoffs, Pandit became the company’s new C.E.O. He oversaw the company’s near collapse in 2008 and its moderate recovery since.

Clearly, this wasn’t the occasion for Pandit to dwell on his career, or on the role that Citi’s irresponsible actions played in bringing on the subprime-mortgage crisis. (In early 2007, his predecessor, Charles Prince, was widely condemned for commenting, “As long as the music is playing, you’ve got to get up and dance.”) Instead, Pandit talked about how well-functioning banks are essential to any modern society, adding, “As President Obama has said, ultimately there is no dividing line between Wall Street and Main Street. We will rise or we will fall together as one nation.” In the past couple of years, he went on, Citi had rededicated itself to “responsible finance.” Before he and his colleagues approved any transaction, they now asked themselves three questions: Is it in the best interests of the customer? Is it systemically responsible? And does it create economic value? Pandit indicated that other financial firms were doing the same thing. “Banks have learned how to be banks again,” he said.

About an hour later, I spoke with Pandit in a sparsely furnished hotel room. Citi’s leaders—from Walter Wriston, in the nineteen-seventies, to John Reed, in the nineteen-eighties, and Sanford Weill, in the late nineteen-nineties—have tended to be formidable and forbidding. Pandit affects a down-to-earth demeanor. He offered me a cup of coffee and insisted that I sit on a comfortable upholstered chair while he perched on a cheap plastic one. I asked him if he saw any irony in Citi being commended for asset building. His eyes widened slightly. “Well,” he said, “the award we are receiving is for fifteen years of work. It was work that was pioneered by Citi to get more financial inclusion. And it’s part of a broader reform effort we are involved in under the heading of responsible banking.”

Since Pandit took over, this effort has involved selling or closing down some of Citi’s riskier trading businesses, including the hedge fund that he used to run; splitting off the company’s most foul-smelling assets into a separate entity, Citi Holdings; and cutting the pay of some senior executives. For 2009 and 2010, Pandit took an annual salary of one dollar and no bonus. (He didn’t, however, give back any of the money from the sale of his hedge fund.) “This is an apprenticeship industry,” he said to me. “People learn from the people above them, and they copy the actions of the people above them. If you start from the top by acting responsibly, people will see and learn.”

Barely two years after Wall Street’s recklessness brought the global economy to the brink of collapse, the sight of a senior Wall Street figure talking about responsible finance may well strike you as suspicious. But on one point Pandit cannot be challenged. Since the promulgation of Hammurabi’s Code, in ancient Babylon, no advanced society has survived without banks and bankers. Banks enable people to borrow money, and, today, by operating electronic-transfer systems, they allow commerce to take place without notes and coins changing hands. They also play a critical role in channelling savings into productive investments. When a depositor places money in a savings account or a C.D., the bank lends it out to corporations, small businesses, and families. These days, Bank of America, Citi, JPMorgan Chase, and others also help corporations and municipalities raise money by issuing stocks, bonds, and other securities on their behalf. The business of issuing securities used to be the exclusive preserve of Wall Street firms, such as Morgan Stanley and Goldman Sachs, but during the past twenty years many of the dividing lines between ordinary banks and investment banks have vanished.

When the banking system behaves the way it is supposed to—as Pandit says Citi is now behaving—it is akin to a power utility, distributing money (power) to where it is needed and keeping an account of how it is used. Just like power utilities, the big banks have a commanding position in the market, which they can use for the benefit of their customers and the economy at large. But when banks seek to exploit their position and make a quick killing, they can cause enormous damage. It’s not clear now whether the bankers have really given up their reckless practices, as Pandit claims they have, or whether they are merely lying low. In the past few years, all the surviving big banks have raised more capital and become profitable again. However, the U.S. government was indirectly responsible for much of this turnaround. And in the country at large, where many businesses rely on the banks to fund their day-to-day operations, the power still isn’t flowing properly. Over-all bank lending to firms and households remains below the level it reached in 2008.

The other important role of the banking industry, historically, has been to finance the growth of vital industries, including railroads, pharmaceuticals, automobiles, and entertainment. “Go back and pick any period in time,” John Mack, the chairman of Morgan Stanley, said to me recently. “Let’s go back to the tech boom. I guess it got on its feet in the late eighties, with Apple Computer and Microsoft, and really started to blossom in the nineteen-nineties, with Cisco, Netscape, Amazon.com, and others. These are companies that created a lot of jobs, a lot of intellectual capital, and Wall Street helped finance that. The first investors were angel investors, then venture capitalists, and to really grow and build they needed Wall Street.”

Mack, who is sixty-six years old, is a plainspoken native of North Carolina. He attended Duke on a football scholarship, and he retains the lean build of an athlete. We were sitting at a conference table in his large, airy office above Times Square, which features floor-to-ceiling windows with views of the Hudson. “Today, it’s not just technology—it’s clean tech,” he went on. “All of these industries need capital—whether it is ethanol, solar, or other alternative-fuel sources. We can give you a list of companies we’ve done, but it’s not just Morgan Stanley. Wall Street has been the source of capital formation.”

There is something in what Mack says. Morgan Stanley has raised money for Tesla Motors, a producer of electric cars, and it has invested in Bloom Energy, an innovator in fuel-cell technology. Morgan Stanley’s principal rivals, Goldman Sachs and JPMorgan, are also canvassing investors for ethanol producers, wind farms, and other alternative-energy firms. Banks, of course, raise money for less environmentally friendly corporations, too, such as Ford, General Electric, and ExxonMobil, which need cash to fund their operations. It was evidently this business of raising capital (and creating employment) that Lloyd Blankfein, Goldman’s chief executive, was referring to last year, when he told an interviewer from a British newspaper that he and his colleagues were “doing God’s work.”

Yet Wall Street’s role in financing new businesses is a small portion of what it does. The market for initial public offerings (I.P.O.s) of stock by U.S. companies never fully recovered from the tech bust. During the third quarter of 2010, just thirty-three U.S. companies went public, and they raised a paltry five billion dollars. Most people on Wall Street aren’t finding the next Apple or promoting a green rival to Exxon. They are buying and selling securities that are tied to existing firms and capital projects, or to something less concrete, such as the price of a stock or the level of an exchange rate. During the past two decades, trading volumes have risen exponentially across many markets: stocks, bonds, currencies, commodities, and all manner of derivative securities. In the first nine months of this year, sales and trading accounted for thirty-six per cent of Morgan Stanley’s revenues and a much higher proportion of profits. Traditional investment banking—the business of raising money for companies and advising them on deals—contributed less than fifteen per cent of the firm’s revenue. Goldman Sachs is even more reliant on trading. Between July and September of this year, trading accounted for sixty-three per cent of its revenue, and corporate finance just thirteen per cent.

In effect, many of the big banks have turned themselves from businesses whose profits rose and fell with the capital-raising needs of their clients into immense trading houses whose fortunes depend on their ability to exploit day-to-day movements in the markets. Because trading has become so central to their business, the big banks are forever trying to invent new financial products that they can sell but that their competitors, at least for the moment, cannot. Some recent innovations, such as tradable pollution rights and catastrophe bonds, have provided a public benefit. But it’s easy to point to other innovations that serve little purpose or that blew up and caused a lot of collateral damage, such as auction-rate securities and collateralized debt obligations. Testifying earlier this year before the Financial Crisis Inquiry Commission, Ben Bernanke, the chairman of the Federal Reserve, said that financial innovation “isn’t always a good thing,” adding that some innovations amplify risk and others are used primarily “to take unfair advantage rather than create a more efficient market.”

Other regulators have gone further. Lord Adair Turner, the chairman of Britain’s top financial watchdog, the Financial Services Authority, has described much of what happens on Wall Street and in other financial centers as “socially useless activity”—a comment that suggests it could be eliminated without doing any damage to the economy. In a recent article titled “What Do Banks Do?,” which appeared in a collection of essays devoted to the future of finance, Turner pointed out that although certain financial activities were genuinely valuable, others generated revenues and profits without delivering anything of real worth—payments that economists refer to as rents. “It is possible for financial activity to extract rents from the real economy rather than to deliver economic value,” Turner wrote. “Financial innovation . . . may in some ways and under some circumstances foster economic value creation, but that needs to be illustrated at the level of specific effects: it cannot be asserted a priori.”

Turner’s viewpoint caused consternation in the City of London, the world’s largest financial market. A clear implication of his argument is that many people in the City and on Wall Street are the financial equivalent of slumlords or toll collectors in pin-striped suits. If they retired to their beach houses en masse, the rest of the economy would be fine, or perhaps even healthier.

Since 1980, according to the Bureau of Labor Statistics, the number of people employed in finance, broadly defined, has shot up from roughly five million to more than seven and a half million. During the same period, the profitability of the financial sector has increased greatly relative to other industries. Think of all the profits produced by businesses operating in the U.S. as a cake. Twenty-five years ago, the slice taken by financial firms was about a seventh of the whole. Last year, it was more than a quarter. (In 2006, at the peak of the boom, it was about a third.) In other words, during a period in which American companies have created iPhones, Home Depot, and Lipitor, the best place to work has been in an industry that doesn’t design, build, or sell a single tangible thing.

From the end of the Second World War until 1980 or thereabouts, people working in finance earned about the same, on average and taking account of their qualifications, as people in other industries. By 2006, wages in the financial sector were about sixty per cent higher than wages elsewhere. And in the richest segment of the financial industry—on Wall Street, that is—compensation has gone up even more dramatically. Last year, while many people were facing pay freezes or worse, the average pay of employees at Goldman Sachs, Morgan Stanley, and JPMorgan Chase’s investment bank jumped twenty-seven per cent, to more than three hundred and forty thousand dollars. This figure includes modestly paid workers at reception desks and in mail rooms, and it thus understates what senior bankers earn. At Goldman, it has been reported, nearly a thousand employees received bonuses of at least a million dollars in 2009.

Not surprisingly, Wall Street has become the preferred destination for the bright young people who used to want to start up their own companies, work for NASA, or join the Peace Corps. At Harvard this spring, about a third of the seniors with secure jobs were heading to work in finance. Ben Friedman, a professor of economics at Harvard, recently wrote an article lamenting “the direction of such a large fraction of our most-skilled, best-educated, and most highly motivated young citizens to the financial sector.”

Most people on Wall Street, not surprisingly, believe that they earn their keep, but at least one influential financier vehemently disagrees: Paul Woolley, a seventy-one-year-old Englishman who has set up an institute at the London School of Economics called the Woolley Centre for the Study of Capital Market Dysfunctionality. “Why on earth should finance be the biggest and most highly paid industry when it’s just a utility, like sewage or gas?” Woolley said to me when I met with him in London. “It is like a cancer that is growing to infinite size, until it takes over the entire body.”

From 1987 to 2006, Woolley, who has a doctorate in economics, ran the London affiliate of GMO, a Boston-based investment firm. Before that, he was an executive director at Barings, the venerable British investment bank that collapsed in 1995 after a rogue-trader scandal, and at the International Monetary Fund. Tall, soft-spoken, and courtly, Woolley moves easily between the City of London, academia, and policymaking circles. With a taste for Savile Row suits and a keen interest in antiquarian books, he doesn’t come across as an insurrectionary. But, sitting in an office at L.S.E., he cheerfully told me that he regarded himself as one. “What we are doing is revolutionary,” he said with a smile. “Nobody has done anything like it before.”

At GMO, Woolley ran several funds that invested in stocks and bonds from many countries. He also helped to set up one of the first “quant” funds, which rely on mathematical algorithms to find profitable investments. From his perch in Angel Court, in the heart of the City, he watched the rapid expansion all around him. Established international players, such as Citi, Goldman, and UBS, were getting bigger; new entrants, especially hedge funds and buyout (private equity) firms, were proliferating. Woolley’s firm did well, too, but a basic economic question niggled at him: Was the financial industry doing what it was supposed to be doing? Was it allocating capital to its most productive uses?