Statistical and applied probabilistic knowledge is the core of knowledge; statistics is what tells you if something is true, false, or merely anecdotal; it is the "logic of science"; it is the instrument of risk-taking; it is the applied tools of epistemology; you can't be a modern intellectual and not think probabilistically—but... let's not be suckers. The problem is much more complicated than it seems to the casual, mechanistic user who picked it up in graduate school. Statistics can fool you. In fact it is fooling your government right now. It can even bankrupt the system (let's face it: use of probabilistic methods for the estimation of risks did just blow up the banking system).
The current subprime crisis has been doing wonders for the reception of any ideas about probability-driven claims in science, particularly in social science, economics, and "econometrics" (quantitative economics). Clearly, with current International Monetary Fund estimates of the costs of the 2007-2008 subprime crisis, the banking system seems to have lost more on risk taking (from the failures of quantitative risk management) than every penny banks ever earned taking risks. But it was easy to see from the past that the pilot did not have the qualifications to fly the plane and was using the wrong navigation tools: The same happened in 1983 with money center banks losing cumulatively every penny ever made, and in 1991-1992 when the Savings and Loans industry became history.
Note: Thanks to agatesystems from MSN BRK Shareholders Board for the original reference
Showing posts with label Credit Crisis. Show all posts
Showing posts with label Credit Crisis. Show all posts
Thursday, September 18, 2008
Sunday, September 14, 2008
Confessions of a risk manager
An insider explains why it is so hard to stop traders behaving recklessly
IN JANUARY 2007 the world looked almost riskless. At the beginning of that year I gathered my team for an off-site meeting to identify our top five risks for the coming 12 months. We were paid to think about the downsides but it was hard to see where the problems would come from. Four years of falling credit spreads, low interest rates, virtually no defaults in our loan portfolio and historically low volatility levels: it was the most benign risk environment we had seen in 20 years.
As risk managers we were responsible for approving credit requests and transactions submitted to us by the bankers and traders in the front-line. We also monitored and reported the level of risk across the bank’s portfolio and set limits for overall credit and market-risk positions.
The possibility that liquidity could suddenly dry up was always a topic high on our list but we could only see more liquidity coming into the market—not going out of it. Institutional investors, hedge funds, private-equity firms and sovereign-wealth funds were all looking to invest in assets. This was why credit spreads were narrowing, especially in emerging markets, and debt-to-earnings ratios on private-equity financings were increasing. “Where is the liquidity crisis supposed to come from?” somebody asked in the meeting. No one could give a good answer.
IN JANUARY 2007 the world looked almost riskless. At the beginning of that year I gathered my team for an off-site meeting to identify our top five risks for the coming 12 months. We were paid to think about the downsides but it was hard to see where the problems would come from. Four years of falling credit spreads, low interest rates, virtually no defaults in our loan portfolio and historically low volatility levels: it was the most benign risk environment we had seen in 20 years.
As risk managers we were responsible for approving credit requests and transactions submitted to us by the bankers and traders in the front-line. We also monitored and reported the level of risk across the bank’s portfolio and set limits for overall credit and market-risk positions.
The possibility that liquidity could suddenly dry up was always a topic high on our list but we could only see more liquidity coming into the market—not going out of it. Institutional investors, hedge funds, private-equity firms and sovereign-wealth funds were all looking to invest in assets. This was why credit spreads were narrowing, especially in emerging markets, and debt-to-earnings ratios on private-equity financings were increasing. “Where is the liquidity crisis supposed to come from?” somebody asked in the meeting. No one could give a good answer.
Tuesday, August 19, 2008
The Elusive Bottom
We aren't past the halfway point of this recession
My sense is that we probably aren't even past the halfway point yet of this recession, the credit losses or the house price deflation. Looking at whether equities may have bottomed or not on an intermediate basis, maybe the recent action to the negative side was an important inflection. In terms of what I do, which is trying to tie the macro into the markets, I have a very tough time believing that we have reached anything close to a fundamental low, either in the S&P 500 or in the long-bond yield, for that matter.
300-point rallies in the Dow happen in bear markets
We're in a very confusing atmosphere. People didn't really know what to make of a 300-point rally in the Dow the other day, but my main message was that 300point rallies from the Dow don't happen in bull markets. In fact, they never happened in the bull market from October '02 to October '07, but it has happened 6 times in this bear market and happened 12 times in the last bear market. You don't get moves like that in bull markets. As Rich Bernstein has said time and again, "This is the hallmark of a recession and a hallmark of a bear market."
Profit as a share of GDP was at unheard of levels
The next question, of course, is what levels are we talking about? Again, I'm going to take what I do, which is earnings, and then talk about the appropriate multiple. What is the appropriate multiple at the low in a recession? In terms of earnings, I think that we have to understand where we're coming from in this cycle. We're coming from a situation where, because of all the leverage in the system, profits in the share of GDP went into this recession and bear market at 14% of GDP, which is unheard of. That's never happened before. A lot of the reason why profits soared was because everybody turned to financials. There was this tremendous amount of leverage, and that accounted for half of just about everything in the cycle from GDP growth to employment to profits.
The profits share of GDP, again, as a proxy for margins, is now down to 12%. Think about that for a second. This terrible earnings recession so far has taken the share of profits from 14% down to 12%. The question is, if I'm right on a recession, where does the profit share of GDP go to at a recession trough? Well, consistently it goes to 7%.
My sense is that we probably aren't even past the halfway point yet of this recession, the credit losses or the house price deflation. Looking at whether equities may have bottomed or not on an intermediate basis, maybe the recent action to the negative side was an important inflection. In terms of what I do, which is trying to tie the macro into the markets, I have a very tough time believing that we have reached anything close to a fundamental low, either in the S&P 500 or in the long-bond yield, for that matter.
300-point rallies in the Dow happen in bear markets
We're in a very confusing atmosphere. People didn't really know what to make of a 300-point rally in the Dow the other day, but my main message was that 300point rallies from the Dow don't happen in bull markets. In fact, they never happened in the bull market from October '02 to October '07, but it has happened 6 times in this bear market and happened 12 times in the last bear market. You don't get moves like that in bull markets. As Rich Bernstein has said time and again, "This is the hallmark of a recession and a hallmark of a bear market."
Profit as a share of GDP was at unheard of levels
The next question, of course, is what levels are we talking about? Again, I'm going to take what I do, which is earnings, and then talk about the appropriate multiple. What is the appropriate multiple at the low in a recession? In terms of earnings, I think that we have to understand where we're coming from in this cycle. We're coming from a situation where, because of all the leverage in the system, profits in the share of GDP went into this recession and bear market at 14% of GDP, which is unheard of. That's never happened before. A lot of the reason why profits soared was because everybody turned to financials. There was this tremendous amount of leverage, and that accounted for half of just about everything in the cycle from GDP growth to employment to profits.
The profits share of GDP, again, as a proxy for margins, is now down to 12%. Think about that for a second. This terrible earnings recession so far has taken the share of profits from 14% down to 12%. The question is, if I'm right on a recession, where does the profit share of GDP go to at a recession trough? Well, consistently it goes to 7%.
Wednesday, February 13, 2008
This Credit Crisis Has a Long Way to Run
Interview with Jeremy Grantham, Chief Investment Strategist, GMO
ONE OF THE GRANDEST OF THINKERS AND MOST ELOQUENT of oracles, Jeremy Grantham has long been the voice of reason in an industry prone to excesses and embellishment. By taking the long view, blending quantitative strategies and technical analysis with sound and experienced judgment, Grantham, chairman of Boston-based GMO, consistently uncovers with his team the best values among a wide range of global asset classes.
The payoff is outstanding performance and risk management. In return, clients have entrusted the firm with about $150 billion. As the man who warned early of a worldwide bubble forming, we turned to him as that bubble has started bursting.
ONE OF THE GRANDEST OF THINKERS AND MOST ELOQUENT of oracles, Jeremy Grantham has long been the voice of reason in an industry prone to excesses and embellishment. By taking the long view, blending quantitative strategies and technical analysis with sound and experienced judgment, Grantham, chairman of Boston-based GMO, consistently uncovers with his team the best values among a wide range of global asset classes.
The payoff is outstanding performance and risk management. In return, clients have entrusted the firm with about $150 billion. As the man who warned early of a worldwide bubble forming, we turned to him as that bubble has started bursting.
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