quinta-feira, 17 de abril de 2014

Michael Lewis: 'Wall Street has gone insane'. Michael Lewis has shown how tech nerds rigged the stock markets. But who will guard the geeks?


"At first sight, the modus operandi of high-frequency traders seems so outrageous that one assumes it must be illegal. In its review, the Economist came up with a useful everyday analogy: high-frequency traders are like "the people who offer you tasty titbits as you enter the supermarket to entice you to buy; but in this case, as you show appreciation for the goods, they race through the aisles to mark the price up before you can get your trolley to the chosen counter".

If you thought Wall Street was about alpha males standing in trading pits hollering at each other, think again. That world is dead. Now, the world's money is traded by computer code, inside black boxes in heavily guarded buildings. This title tells the story of how one group of ingenious oddballs and misfits set out to expose what was going on.


Michael Lewis has shown how tech nerds rigged the stock markets. But who will guard the geeks?
The Moneyball author's latest book is a warning about the 'politics of expertise' – about how access to complex technologies confers incredible power and an ability to outsmart public regulation and oversight
John Naughton

Light travels at 186,000 miles a second in a vacuum, which is another way of saying that it covers 186 miles in a milli-second – a thousandth of a second. Given that much of our contemporary electronic communications are conveyed by pulses of light travelling along fibreoptic cables, we are given to extravagant hyperbole about the "death of distance". After all, if a message – or a file – can traverse the globe in the blink of an eye, it doesn't matter whether your hard drive is on your desktop or in a server farm in Nebraska or Sweden.

But it turns out that the speed of light is of great practical interest to some people. One group of them have shelled out $300m to lay a fibreoptic cable in a straight line from Chicago to New York. This involves, among other things, drilling through mountains and under urban areas. And for what? So that the time taken to send a signal between New York and Chicago could be reduced from 17 milliseconds to 13. For that apparently infinitesimal improvement, stock market traders were willing to pay $14m a year, plus a substantial upfront payment, to use the cable.

Therein lies the tale of Michael Lewis's enthralling new book, Flash Boys, which joins an elite but growing list of volumes that set out to explain how computing is reshaping our world. For it turns out that for people armed with the right kit, software and networking skills, an advantage of a few milliseconds is enough to let them turn a $14m annual subscription into annual profits of $20bn.

These people are called high-frequency traders – "high-frequency" because they are incredibly active (they submit almost 99% of the orders on US stock markets) and buy and sell shares in milliseconds. They are not really "traders" in any normal sense of the term, but software algorithms, and they now dominate the most important stock markets in the capitalist world.

Most of us knew that, sort of. We knew about computerised trading and probably naively assumed that it was more efficient than the old system of guys in coloured jackets bellowing at one another on the floor of an exchange. Well, it is more efficient – for some. But the significance of Lewis's book is that it explains in user-friendly terms how the colossal profits of high-frequency traders really amount to an unconscionable tax on the ordinary investor, or at any rate on the pension funds and other financial institutions on which our livelihoods depend.

Flash Boys follows the usual Lewis formula: find a scandalous situation that is too arcane for most people to comprehend; locate some smart guys (they are usually male) who have spotted the scam and plan to do something with or about it; and tell their story.

In his earlier book The Big Short, Lewis focused on the smallish group of shrewd investors who understood that the sub-prime mortgage boom was sure to go bust and bet against it. In his new book, the white hat is worn by Brad Katsuyama, a Royal Bank of Canada trader who discovered the extent to which high-frequency traders were skewing the stock market and screwing investors and, in the end, set up a new stock exchange (IEX) designed to level the playing field by making sure everyone's trading instructions arrived at the same time.

But the most interesting thing about Flash Boys is what it reveals about the networked world into which we have stumbled. Once upon a time the New York stock exchange was a place; now it's a set of more than a dozen "stock exchanges" scattered around New York and New Jersey. But these exchanges are not places either: they are server farms, air-conditioned warehouses filled with rack-mounted computers, complete with blinking lights and whirring discs.

So the stock market has become a virtual space – an interactive, computer-driven system of staggering complexity. And it turns out that there are several sides to this complexity: for the banks and the high-frequency traders who exploit it, it's a marketing tool for bamboozling investors and a means of intimidating regulators; and for smart programmers and entrepreneurs it offers limitless opportunities to play the system.

"From the point of view of the most sophisticated traders," Lewis writes, "the stock market wasn't a mechanism for channelling capital to productive enterprise but a puzzle to be solved."

For society, the system's complexity is dangerous, because complex systems are intrinsically unpredictable and nobody really understands this one as a whole – which means that catastrophic failure is always a remote but finite possibility.

At first sight, the modus operandi of high-frequency traders seems so outrageous that one assumes it must be illegal. In its review, the Economist came up with a useful everyday analogy: high-frequency traders are like "the people who offer you tasty titbits as you enter the supermarket to entice you to buy; but in this case, as you show appreciation for the goods, they race through the aisles to mark the price up before you can get your trolley to the chosen counter". How, one wonders, can it be legal for a handful of insiders to operate at faster speeds than the rest of the market and, in effect, steal from investors?

But it is legal, and for an interesting reason. In 2004 the US Securities and Exchange Commission discovered that some traders in the old New York stock exchange were exploiting the discretion then allowed to them in choosing the time to execute a deal. The following year the SEC passed a new regulation, known as Reg NMS, which obliged traders to seek "the best price" for a security.

What the SEC did not anticipate was that in the new fragmented system of a dozen virtual exchanges, this provided the opportunity for high-frequency traders to outrun the market while staying within the law. Reg NMS was a well-intentioned measure to restore equality of opportunity in the US stock market. But instead, as Lewis points out, "it institutionalised a more pernicious inequality. A small class of insiders with the resources to create speed were now allowed to preview the market and trade on what they had seen."

This is a good illustration of one of the central problems that society will have to address in the coming decades: the collision between analogue mindsets and digital realities.

Software is pure "thought-stuff". The only resource needed to produce it is human intelligence and expertise. This has two implications. The first is that attempting to regulate the things that it creates is like trying to catch quicksilver using a butterfly net.

The Edward Snowden disclosures about the US National Security Agency have revealed how difficult it is to bring this stuff under effective democratic control. Lewis's account of how high-frequency trader geeks have run rings around the regulators suggests that much the same holds true in civilian life. This technology can easily run out of control.

The second implication is that what one might call the politics of expertise will become much more important. Mastery of these technologies confers enormous power on those who have it. Sed quis custodiet ipsos custodes and all that. So in addition to wondering who will guard the guardians, we may have to start thinking about who is going to guard the geeks.
 
Michael Lewis exposes the nefarious world of high-frequency trading in Flash Boys. Photograph: Richard Saker
Michael Lewis: 'Wall Street has gone insane'
Flash Boys, an exposé of the murky world of 'rigged' high-frequency trading, has sold 130,000 copies in its first week and is already being turned into a film. Its author, Michael Lewis, explains why the story is so compelling – and why our brightest minds make the most dangerous bankers
Emma Brockes


On a sliding scale of difficulty, writing a general-interest book about high-frequency trading is slightly harder than making baseball statistics interesting, but easier than animating the role played by quantitative analysis in the 2007 financial collapse. "Collateralised debt obligations," says Michael Lewis, who has written about all three, "are impossible to describe. There's nothing harder. However, trying to show a reader how a market moves? How stock prices move? You can already see them tuning out."

That was the concern when he wrote Flash Boys, an investigation into what he calls the "rigged" underbelly of Wall Street trading. In the event, the book has sold a staggering 130,000 copies in the US in its first week of publication. (By comparison, The Big Short, his biggest seller to date, sold 60,000 in its first week.)

Lewis has been on every talk show and financial news panel in the land, arguing with, among others, Bill O'Brien, the president of the Bats Global Markets stock exchange, about whether or not he and his cohorts are ripping off their customers. If the 53-year-old started off angry, opposition to the book has sharpened his stance into a moral crusade. "I find this story really upsetting," he says over lunch in LA, where his publicity tour just ended. "The idea that the smartest, richest elites of society find this an acceptable activity. This predatory activity."

If it's emotional for Lewis, then the responses have been emotional too, given how unequivocal his accusations are. The cornerstone of Flash Boys is a discovery made by an obscure Canadian banker, Brad Katsuyama, who noticed that whenever he tried to execute a trade, the stock price moved before the order went through. A long and tortured investigation revealed that the variable speeds at which trading information travels down fibre-optic cables to the exchanges was being exploited by brokers and high-frequency traders – so-called for the volume of trades they make – to jump the queue, buy the stocks in question and sell them back at a higher price to the person who expressed the original interest.

"Someone out there was using the fact that stock market orders arrived at different times at different exchanges to front-run [orders]," writes Lewis. It was a side-effect of automated trading and a tough thing for bankers to wrap their heads around, let alone laypeople. In plain English, as a colleague of Katsuyama's put it: "My role was to walk around and say to clients, 'Don't you understand you're being fucked?'"

Lewis looks and sounds a lot like the people he is writing about. He is slick, well manicured and fluent in the language of finance – about as far from the Occupy movement as you can get, and much more dangerous to Wall Street, given that he actually knows what he is talking about. Since the book came out, the FBI, the US department of justice and the New York attorney general's office have all launched investigations into high-frequency trading practices, and Goldman Sachs has discussed the possibility of shutting down its "dark pool" – the anonymous trading venue that, argues Lewis, gives high-frequency traders their unfair advantage.

"I thought it would create a shitstorm," he says. "Then I thought, it's too complicated and I've got a nice Canadian guy as my main character – I'm not sure how much of a shitstorm this is going to create, because I don't know if even my mother is going to pick it up. But the noise level has been so great."
Not all of it has been positive. Prominent in reviews of the book has been the critique that Lewis has created a false set of heroes and – particularly from financial journalists – that none of this stuff is new in the first place.

"And that's a ton of horseshit, because I've watched Katsuyama educate the world. It's his story. His knowledge starts in '08. And if you knew this already, why didn't you do something about it?"

Lewis has also been accused of wringing fake drama from a story wherein the victims, when it comes down to it, are billionaire hedge fund managers, not the so-called little guys. "Little people – their money is largely managed by big institutions: mutual funds, pension funds, endowments, insurance companies – that's where their money is. It's true that this is a weird place where the interests of mom and pop happen to be the same as the interests of a billionaire hedge fund manager. But that doesn't reduce the level of interest of mom and pop."

To outsiders, Lewis's banking expertise looks pretty solid, which is as much a function of how little most of us know about that world as it is of Lewis's verisimilitude. As he himself points out, he really didn't work in the banking sector for long, starting a career in his mid-20s as a bond salesman at Salomon Brothers and getting out at the age of 27 to become a writer.

Still, for those short years, which he mostly spent at the Salomon offices in London, he was very successful, riding the 1980s boom and gathering material for his hugely enjoyable memoir about the period, Liar's Poker. The common strand in Lewis's work is his combination of systems analysis with great human interest. Moneyball, which was made into the 2011 movie starring Brad Pitt, told the history of baseball through one man's effort to redefine notions of value in the sport's talent pool.
The Blind Side, his book about American football, was made into a blockbuster that earned Sandra Bullock an Oscar. Hollywood pitched it as a heart-warming tale of an unusual family, whereas the actual book contains pages and pages of football analysis, centred around the geeky proposition that quarterbacks are "only as good as the system they played in". The Big Short put human faces on the bankers who profited from the housing collapse.

It was while he was still at Salomon that Lewis realised he had a set of skills that, if he wanted to become a writer, would give him an advantage in that particular marketplace: understanding of a world that most writers had no contact with. After an art history degree at Princeton, he studied for a master's in economics at the London School of Economics under the former governor of the Bank of England Mervyn King. ("He was fabulous. A lot of the professors I had were crusty old English guys with hair coming out of their ears. They weren't worldly. He was; he was very smart.")

There was a crossover between the two disciplines, trading and journalism, which Lewis identifies now as "a certain sneakiness. Getting stories often requires an amount of sneakiness. Beyond that, a certain social ability. You have to get along with people. It helps to have the minimum necessary analytical ability."

While still at Salomon he started writing anonymous dispatches from the trading floor and publishing them in the Spectator and the Sunday Telegraph, and could see from the response that he was on to something. "They would go the equivalent of viral before the internet. People would photocopy them and hand them out on the trading floor. No one knew it was me. So I could see that it was working."

Liar's Poker did so well, says Lewis, that "I thought: I'm a free man. A lot of the stuff I did afterwards was all over the place. It was magazine stuff. I'd write essays, I wrote about everything. There was no pattern to the stuff I was doing. I covered politics for the New Republic." The books he wrote ranged across genres, too, so that he thinks of himself these days as more of a sports writer than anything else. "Or a travel writer. If I had to pick one genre of non-fiction, it'd be travel writing." Liar's Poker, he says, was in some ways a travel book – the story of "me moving through space".

Of all Lewis's books, it was The Blind Side that did least well when it was first published, tanking until the film came out and drove a million sales. "The problem is that people who like football do not read. And if they read, they don't want an emotional chick flick buried in their book. It was not a good business idea."
More recently, he wrote a huge, moony profile of Barack Obama for Vanity Fair, the most incisive part of which was Lewis's analysis of the president's basketball skills: "Not flashy, but he slides in to take charges, passes well, and does a lot of little things well," he wrote. "The only risk he takes is his shot, but he shoots so seldom, and so carefully, that it actually isn't much of a risk at all." The rest of it reads along the lines of a 15-year-old's daydream after a Justin Bieber concert ("I gazed up to find Obama staring down at me …" "'I feel a little creepy being here,' I said. 'Why don't I get out of your hair?' He laughed. 'C'mon,' he said …" etc). We all have our weaknesses.

Thanks to the success of Lewis's books, people frequently ring him with ideas about what to do next, which most of the time he ignores. In 2009, he received a call from an old contact, a lawyer, who said he had a client Lewis might be interested in writing about. This was Sergey Aleynikov, the former Goldman Sachs programmer arrested by the FBI and ultimately jailed for "stealing code" from the bank. "It's an incredible story," says Lewis, "and I said yeah, yeah, yeah and ignored him for a year and a half." During that time, he mulled over what could be so valuable as to justify what looked, from the outside, like an extraordinary overreaction on the part of Goldman Sachs.

"I didn't understand the code – what had he taken? It was very fishy, the way Goldman Sachs reacted to it. No matter how valuable it was, calling the FBI was a really extreme thing to do. And to do it so quickly. And it was pretty clear from the newspaper descriptions that no one understood what he'd taken." Lewis spoke to a few investors, started looking into high-frequency trading, and was ultimately told about someone who would go on to motor his whole story, Brad Katsuyama, or as he was described to Lewis at the time: "There's this one guy who works for the Royal Bank of Canada."

One of the criticisms of the book has been that it doesn't identify any one villain, something Lewis says was deliberate. "I made a very conscious decision at the beginning not to do that. The reason is: everyone's involved." Does he understand the 10 lines of code that execute a trader's orders? No. "But there's a predator, and a guy figures out he's the prey. Then he figures out how the predator's trying to kill him and tries to stop the predator. The basic story was pretty simple."

Given how large the financial stakes are, it's surprising, I suggest, that there isn't more corporate assassination. Lewis laughs. "Brad asked me if he should get security. And I thought maybe before the book came out. But now, it'd be a little obvious."

Lewis takes roughly 18 months to write a book: a year on the research and structure, and five months to hammer it out. At the same time, he continues with his journalism, writes screenplays and with his wife Tabitha Soren, a photographer and former reporter for MTV News, raises their three children. Lewis's book Home Game was about fatherhood and his memoir Coach was the story of his high-school baseball experiences, which is in the process of being turned into a film.

As is Flash Boys. The day before we meet, Lewis sold the rights to Columbia Pictures and Scott Rudin, who successfully made Moneyball. The irony is that when Lewis quit banking, it was for a $40,000 (£24,000) book contract that indicated he would never make the kind of money he had as a 25-year-old bond salesman. Although actually, he says, looking at the kinds of figures earned by the characters in Flash Boys, who knows?

"I might still have done better in banking. The thing is, I have a sense of what my trajectory inside the financial world would've been and I would've ended up in long-term capital management at Salomon Brothers, and that collapsed. They lost all their money. I'd have been wiped out."

Anyway, he thought it would be a meaningless life. "I didn't belong there. It's hard to remember what it feels like to be 27; you're immortal. You can do anything you want."

The accident of his career is, he says, that he has been so well-placed to document an industry "that has gone insane. The financial markets have generated this fantastic material. I don't think anything else like this will walk in my door."

And he hopes the fact that the world's best and brightest – French particle physicists, Russian aerospace engineers, wunderkind Chinese programmers – all go into banking these days, because the financial rewards are so huge, is a historical anomaly.

"It's very odd. We think of it as normal, but those sorts of people throughout history have not gone into banking. They've done useful things. The sorts of people who used to go into banking were pleasant, jolly chaps, the class monitor who gets on with everyone. That's who should be in banking. That's what we need!"

Why? "Because the smart people are too dangerous. They find ways to game the system."


• Michael Lewis is speaking at the Royal Geographical Society, London, on 30 April. Buy tickets at 5x15.com.

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