Tuesday, April 1, 2014

Michael Lewis’s Flawed New Book

The CatFish gets it. Felix Salmon writes at Reuters:
I’m halfway through the new Michael Lewis book – the one that has been turned into not only a breathless 60 Minutes segment but also a long excerpt in the New York Times Magazine. Like all Michael Lewis books, it’s written with great clarity and fluency: you’re not going to have any trouble turning the pages. And, like all Michael Lewis books, it’s at heart a narrative about a person — in this case, Brad Katsuyama, the founder of a small new stock exchange called IEX.

The narrative is interesting enough — but so far I haven’t seen anything that would qualify as the “lighting in a bottle” he promised Boris Kachka. We were promised scoops, but so far it’s hard to see what the scoops are supposed to be. The most interesting thing I’ve discovered so far is the existence of something called “latency tables” — a way for HFT shops to work out exactly which brokers were responsible for which orders. The trick is to realize that because every brokerage is in a slightly different physical location, each house’s trades will hit the various different stock exchanges in a slightly different order. And so by looking at the time difference between a given trade showing up on different exchanges, you can (or could, at one point) in theory identify the bank behind it...

ewis takes pains to tell us what happened to the number of trades per day between 2006 and 2009, for instance, but doesn’t feel the need to mention what has happened since then. (It is falling, quite dramatically.) The scale of the HFT problem — and the amount of money being made by the HFT industry — is in sharp decline: there was big money to be made once upon a time, but nowadays it’s not really there anymore. Because that fact doesn’t fit Lewis’s narrative, however, I doubt I’m going to find it anywhere in his book.

Similarly, Lewis goes to great lengths to elide the distinction between small investors and big investors. As a rule, small investors are helped by HFT: they get filled immediately, at NBBO. (NBBO is National Best Bid/Offer: basically, the very best price in the market.) It’s big investors who get hurt by HFT: because they need more stock than is immediately available, the algobots can try to front-run their trades. But Lewis plays the “all investors are small investors” card: if a hedge fund is running money on behalf of a pension fund, and the pension fund is looking after the money of middle-class individuals, then, mutatis mutandis, the hedge fund is basically just the little guy. Which is how David Einhorn ended up appearing on 60 Minutes playing the part of the put-upon small investor. Ha!

The full Salmon piece is here.

2 comments:

  1. 01 April 2014
    HFT: 60 Minutes Sanitizes Its Report - What Banks, What Exchanges?

    Two of the chief culprits of aiding and abetting high frequency traders, the New York Stock Exchange and the Nasdaq stock exchange, failed to come under scrutiny in the much heralded 60 Minutes broadcast on how the stock market is rigged.

    This past Sunday night, 60 Minutes’ Steve Kroft sat down with noted author Michael Lewis to discuss his upcoming book, “Flash Boys,” and its titillating revelations about how high frequency traders are fleecing the little guy.

    Kroft says to Lewis: “What’s the headline here?” Lewis responds: “Stock market’s rigged. The United States stock market, the most iconic market in global capitalism is rigged.”

    Kroft then asks Lewis to state just who it is that’s rigging the market. (This is where you need to pay close attention.) Lewis responds that it’s a “combination of these stock exchanges, the big Wall Street banks and high-frequency traders.”

    We never hear a word more about “the big Wall Street banks” and no hint anywhere in the program that the New York Stock Exchange and Nasdaq are involved.

    60 Minutes pulls a very subtle bait and switch that most likely went unnoticed by the majority of viewers.

    In something akin to its own “Flash Boys” maneuver, it flashes a photo of the floor of the New York Stock Exchange as Kroft says to the public that: “Michael Lewis is not talking about the stock market that you see on television every day. That ceased to be the center of U.S. financial activity years ago, and exists today mostly as a photo op.”

    That statement stands in stark contrast to the harsh reality that the New York Stock Exchange is one of the key facilitators of high frequency trading and making big bucks at it.

    http://jessescrossroadscafe.blogspot.com/2014/04/pam-martens-60-minutes-takes-pass-what.html

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  2. I would rather see a book about commodity price manipulation, i.e. gold. That book I would buy.

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