無料のKindleアプリをダウンロードして、スマートフォン、タブレット、またはコンピューターで今すぐKindle本を読むことができます。Kindleデバイスは必要ありません。
ウェブ版Kindleなら、お使いのブラウザですぐにお読みいただけます。
携帯電話のカメラを使用する - 以下のコードをスキャンし、Kindleアプリをダウンロードしてください。
A Demon of Our Own Design: Markets, Hedge Funds, and the Perils of Financial Innovation ハードカバー – 2007/4/6
Why do markets keep crashing and why are financial crises greater than ever before? As the risk manager to some of the leading firms on Wall Streetfrom Morgan Stanley to Salomon and Citigroupand a member of some of the worlds largest hedge funds, from Moore Capital to Ziff Brothers and FrontPoint Partners, Rick Bookstaber has seen the ghost inside the machine and vividly shows us a world that is even riskier than we think. The very things done to make markets safer, have, in fact, created a world that is far more dangerous. From the 1987 crash to Citigroup closing the Salomon Arb unit, from staggering losses at UBS to the demise of Long-Term Capital Management, Bookstaber gives readers a front row seat to the management decisions made by some of the most powerful financial figures in the world that led to catastrophe, and describes the impact of his own activities on markets and market crashes. Much of the innovation of the last 30 years has wreaked havoc on the markets and cost trillions of dollars. A Demon of Our Own Design tells the story of mans attempt to manage market risk and what it has wrought. In the process of showing what we have done, Bookstaber shines a light on what the future holds for a world where capital and power have moved from Wall Street institutions to elite and highly leveraged hedge funds.
- 本の長さ276ページ
- 言語英語
- 出版社John Wiley & Sons Inc
- 発売日2007/4/6
- 寸法15.88 x 3.18 x 23.5 cm
- ISBN-100471227277
- ISBN-13978-0471227274
商品の説明
レビュー
著者について
登録情報
- 出版社 : John Wiley & Sons Inc (2007/4/6)
- 発売日 : 2007/4/6
- 言語 : 英語
- ハードカバー : 276ページ
- ISBN-10 : 0471227277
- ISBN-13 : 978-0471227274
- 寸法 : 15.88 x 3.18 x 23.5 cm
- Amazon 売れ筋ランキング: - 310,217位洋書 (洋書の売れ筋ランキングを見る)
- - 356位Accounting
- - 1,460位Professional & Technical Finance
- - 1,470位Business & Investing Finance
- カスタマーレビュー:
著者について
著者の本をもっと発見したり、よく似た著者を見つけたり、著者のブログを読んだりしましょう
-
トップレビュー
上位レビュー、対象国: 日本
レビューのフィルタリング中に問題が発生しました。後でもう一度試してください。
ブックステーバー氏は、ソロモン・ブラザーズのリスク管理責任者としてブラックマンデー(1987年10月19日の株価の大暴落)を経験し、その後、モルガン・スタンレーで同じ仕事をし、ロシア経済危機(1998年8月のロシア国債デフォルト、それをひとつの契機とするヘッジファンドLTCMの破綻)を経験、そして、ヘッジファンド大手ムーア・キャピタルのリスク管理責任者を歴任しきた。いくつもの金融危機を大手金融機関やヘッジファンドのリスク管理責任者の立場で観察し続けてきた経験に基づく氏のことばには重みがある。
他の国からのトップレビュー
The author explains numerous financial crises that occurred since the early eighties in technical details. However, on pg. 241, he synthesizes his analysis in just a few concise sentences. The 1987 crash was a vicious downward spiral caused by hedging actions (selling futures short associated with portfolio insurance) that reinforced the decline in stock values causing further hedging actions. The LTCM meltdown was caused by the forced asset sales at liquidation price triggered by creditors that resulted in further asset price decline. The dot.com bubble was due to the majority of traders being on the buy side of a very limited supply of hi-tech stocks that created a feedback loop of self-fulfilling prophecy. When dot.com IPOs met and exceeded investor demand, the market collapsed. In other parts of the book, he spends tens of pages on each of those crises. But, in a nutshell that is pretty much what they were about.
The key explanatory chapter is chapter 8 titled "Complexity, Tight Coupling, and Normal Accidents." Here the author explains how systems that are complex with many interconnected variables with unpredictable, nonlinear effects, that in turn are associated with tight coupling (denotes a chain-like reaction without much time to react or adapt to the consequence) are recipes for disasters. Those are called "normal accidents" meaning they are to be expected; but, you can't expect what they will be. So, you can't prevent them. "The more complex and tightly coupled the system, the greater the frequency of normal accidents." The author depicts numerous failures of complex systems with various levels of tight coupling including nuclear plants disasters (Three Mile Island, Chernobyl) and aerospace disasters (Challenger and Columbia missions that both killed seven crew members).
Financial derivatives make for perfect complex systems with tight coupling. They have numerous unpredictable nonlinear outcomes, high leverage, and lightning quick trading. Those characteristics make for what Warren Buffet called "financial weapons of mass destruction."
Adding to the vulnerability of financial complex systems is the "Butterfly Effect" (reference to Chaos theory). As financial models make even fractionally small errors, those tiny errors over multiple iterations compound and generate huge intractable outcome errors.
Another cause of complex vulnerability is scale. The business world has focused on economies of scale to extract a cost competitive edge. But, beyond a certain point scale does not contribute to economies but instead to complexities. In chapter 7 titled "Colossus" Bookstaber describes the forming of a financial conglomerate monster: Citigroup. He headed a market risk management group at Salomon that got acquired by Citi. And, he describes how the risk management function became unmanageable. Externally, tracking risk exposures globally in so many instruments, businesses, and geographies became impossible. Internally, the change in corporate scale expanded his risk management group to a dysfunctionally large level.
Bookstaber indicates that regulations does not work in reducing the risk within financial complex systems. By forcing banks to reduce existing risk exposures, they are forced to sell assets. Those forced sales cause asset values to drop further forcing further asset sales. This relates to Fisher's The Debt-Deflation Theory of Great Depressions . "Trying to control the risk ends up creating a liquidity crisis."
Forcing hedge funds towards increasing transparency is a self-defeating proposition. Hedge funds competitive edge are proprietary strategies. If their accounts become transparent, they pretty much go out of business.
Bookstaber makes an interesting connection between Heisenberg's Uncertainty Principle and finance (pg. 223). In the quantum world, you can't improve the measurement of an electron's speed without impairing the measurement of its location. In the finance world, you can't increase transparency without decreasing liquidity. As mentioned, transparency would impair the hedge fund sector. And, the latter is the major liquidity provider for illiquid assets. Without hedge funds many such markets would not be viable.
If upcoming regulatory constraints do not impair the hedge fund sector, Bookstaber anticipates it could become a dominant force within the institutional investment world. His take is that if you take two equally brilliant investors, and the first one is limited to "long" strategies only and the other one is not and can avail himself to all sorts of other investment strategies, the latter one should prevail. And, that describes the difference between a traditional mutual fund and a hedge fund.
However, that is one instance where I may question Bookstaber's opinion. The hedge fund has to deliver gross returns that are so much higher than the mutual fund because it charges so much more (1% operating expense and 20% of profits vs only the 1% for the regular mutual fund). Bookstaber suggests the hedge fund compensates for that because of the inherent leverage in hedge fund strategies. But, by doing so a hedge fund takes on risk that renders it much more fragile than a regular fund. Earlier, Bookstaber states that many hedge funds "win a little, win a little, than lose a lot." Thus, hedge funds blow ups are more frequent than mutual fund ones. Additionally, there is already too much money in hedge funds to chase too few market inefficiencies. This ultimately makes a case for neither hedge funds or regular mutual funds but index funds instead.
Bookstaber addresses the Efficient Market Hypothesis (EMH) in a most interesting way. He understands the subject better than most as he wrote his economics PhD thesis on the transmission of information through the markets. Bookstaber states that stock prices are driven by two components: one is information, and the other is liquidity factors. The EMH covers only partly the information component. That's because it makes some liberal assumptions such as that traders are perfectly rational, and that their actions do not affect the markets. But, the EMH does not cover the liquidity factors. Those include the actual float or supply of each stocks, transaction costs, and leverage constraints. And, often liquidity factors are the predominant drivers of investment prices. Bookstaber states on pg 213 "[liquidity] is the primary driver of crashes and bubbles as well." This makes sense. The information component is disseminated instantly and should be fully reflected in stock prices at all times (the EMH take). But, liquidity factors can get markets out of whack. As Bookstaber explained, the dot.com bubble was mainly fueled by a very small float (short supply) of hi-tech stock at the onset.
Bookstaber describes interesting statistical arbitrage strategies (paired stock trading) devised to differentiate between the information component of a stock price, that typically does not mean revert in the short term, vs the liquidity component that does. He indicates that this is easier said than done. As usual, the early traders who devised those strategies made a lot of money. But, the market is a rapidly learning machine and those Alpha returns were pretty much arbitraged out a long time ago. So, that's the puzzling thing about the EMH. The theory is far from perfect. Yet the markets are brutally efficient. Alpha returns depend on traders coming out with new investment strategies until they are replicated. At such point, they are forced to uncover Alpha returns some place else. So, efficiency is a moving target.
In the conclusion, Bookstaber makes recommendations on how to reduce the fragility of our financial system. We should reduce the tight coupling within the system. He proposes to do that by reducing leverage which in turn reduces liquidity and the speed of market activity (tight coupling). He also recommends selective evaluation of financial innovations to prevent dangerous complexities. Insiders will not like Bookstaber's recommendations and will argue that financial innovation has greatly improved wealth creation worldwide. But, you have to distinguish between benign vs complex financial innovations. It is easy to argue in favor of ATMs, debit cards, new mobile payment mechanisms, and online banking innovations. But, did we benefit from MBS, CDOs, and SIVs? Certainly not lately!
Richard Bookstabber, gelernter Mathematiker und MIT Ökonom, verfügt über 25 Jahre Erfahrung in der Industrie, hat mit den "ganz großen" im Geschäft gearbeitet und war auch selbständig (mit seinen Söhnen) an den Märktem aktiv....und geht mit sich selbst und seinem "Wirken und Schaffen" durchaus hart ins Gericht. Es ist bestimmt selbst für einen Experten bestimmt nicht leicht seine Erfahrungen, Ideen, Theorien didaktisch sinnvoll und auch für Normalsterbliche einigermaßen nachvollziehbar aufzubereiten....aber ich denke Bookstabber ist es gelungen. Für "Neulinge" in der Thematik ist das Buch bestimmt nicht gänzlich ohne Anstrengung zu verstehen...aber wer hat gesagt, daß Wissenserwerb schmerzfrei ist:).
Die Frage die er in den ersten Kapiteln stellt ist interessant. "Realwirtschaftlich" gesehen ist die Welt so stabil wie NIE ZUVOR IN DER GESCHICHTE DER MENSCHHEIT! Ein offener Welthandel, moderne Technologie, politische Stabilität sorgen für Planungssicherheit und erhöte Diversifikation ( na zumindest für uns Europäer und die USA). Aber warum wird diese erhöte Stabilität nicht an den Kapitalmärkten widergespiegelt? Bookstabber liefert ein ziemlich einleuchtenden Erklärungsansatz......und das "alternative Investment" Gschäft spielt da eine entscheidende Rolle...ganz ohne amerikanische, russische oder chinesische Verschwörungstheorien....ohne Böse Saudis und Strippenzieher im Hintergrund mit dem Masterplan...mit Teilnehmern und Verursachern die im schlimmsten Fall habgierig und ignorant sind, aber nicht betrügerisch,kriminell oder machtbesessen...ein ganz einleuchtender aber selbstzerstörerischer Prozess...
Fazit: nicht immer einfach, aber denoch unterhaltsam...
Warnung: Das Buch will keine "Hilfe" für Kleinanleger sein, wie die Bücher von Max Otte oder Dirk Müller....ergo keine "Tipps" ( un bessä is das....finde ich)
We generally think of risk managers as "Don't do that, Maud" types. In fact the reverse is true. Far from preventing the firm from betting the farm, the risk managers job is to help to bet the farm, but only on a sure thing. Hence the development of risk strategies which allow firms to profit from market imperfections.
Bookstaber gives a history of these strategies, enlivened often by amusing anecdotes and a dry wit. Some of them (statistical arbitrage, for example) appear to have been invented almost by accident. All of them lose their edge over time and become just another part of the market with very low returns for the risk. Most users of these risk strategies provide liquidity to the market, which Bookstaber shows is necessary and (less convincingly) under-rewarded.
By this analysis the financial markets were almost programmed to blow up. Recessions and depressions come always from the financial markets to the real economy, not the other way round as Galbraith alleged.
Now that the crisis is upon us, what does Bookstaber recommend? If he had a good plan I'd elect him world president right away, but this is unsurprisingly the weakest part of the book. But he's good on what won't help. More regulations? Useless, because they'll only control the obvious. Ban short trading / hedge funds? Likewise. Better risk management? Of limited use, because some risk is unpredictable and so unmeasurable. He recommends eschewing the more exotic derivatives. No doubt they are already untradeable (and so worthless) but if someone wants to buy one you can be sure that Wall St will find a way to sell it. Less leverage? Well, we've already got that with a vengeance, without any new legislation.
I repeat: this is a terrific book, buy it. The author should be congratulated for not mentioning Faust or Prometheus once in 260 pages.