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Is your joy for stats just as big as Hans Rosling's enthusiasm shows?
Just watch how Hans tells the developing story of Lifespan against Income in more than 200 years, showing around 200 countries in a 120.000 numbers flowing chart!
It's clear, we actuaries can learn from Hans with his (1) 'sticky enthusiasm' and (2) 'keeping the issue on headlines'.....
You can play for your own with the data Hans uses on Gapminder World
No doubt..., your next board presentation will be dynamic and flowing.
To conclude... If you as an actuary think you know more about the actuarial world than a chimp, please take Hans Rosling's
Last week I gave a Risk Management training about pension funds. After illustrating several times the importance of adequate risk management dashboards, one of the attendees suddenly stated:
'No matter how impressive your dashboard, you should keep your eyes on the road!'........
Right he was! A driver who's constantly focused on his dashboard will sooner or later end up in the bush and finally crash.
We, actuaries and risk managers all trust on our dashboards, but at the same time we should keep our eyes open to anticipate on coming events in a changing marketplace.
Sometimes it's even better to just leave the road, as the next video shows...
How did you interpret the title of this Blog......?
Can you read it in more than one way? In how many ways can you read it?
Still confused?
Enough questions to start this blog.
In short: the more ways you are able to read this title, the more successful you'll probably be in defining and executing 'Stress Tests" in practice.
Let's dive a little deeper to illustrate this important 'multi interpretation talent' you need, to make stress testing a success.
Although there are far more ways (please add some interesting suggestions as comments to this blog) to interpret the title 'stress test stress test', we'll analyze in this blog two interesting interpretations that follow from the fact that 'stress test' can be interpreted as a noun or as a verb.
1. stress test [noun] stress test [noun]
Interpreting the title as two nouns could:
make you aware of the importance of stress tests
emphasize the importance of repetitive execution of stress tests
illustrate the feeling of disinterest and apathy that occur when important words are repeated to often without enough plowing depth..
2. stress test [verb] stress test [noun]
This perhaps the most interesting interpretation.
How can you really stress test your stress test?
The way we stress test at financial institutions like banks, insurance companies and pension funds, is basically more or less as follows:
Project historical crisis crash-data into the future. Simulate what would happen and take a look at the consequences
Test crash scenarios on basis of the question: What would happen if.... (prices go down, S&P 500 collapses, etc., etc.)
Take several economic scenarios. Project them on your balance sheet and see what happens.
To stress-test a stress test we have to develop a different view on stress tests.
A view based on the answer of the next leading question:
How many sides has a coin?
Let's demonstrate this new crucial view on a stress test.
A Different View on Stress Tests
Some examples:
Inverted Stress Test
An interesting way of stress testing is 'working the other way around': Try to define financial situations where you never want to end up in (e.g. equity< -5%, etc.) and try to imagine scenarios that could lead to this unwanted financial situation Paul Duijsens, ALM Principal Mercer Investment Consulting, mentions this approach).
Idiot Proof Stress Test Andrea Enria, chairman of Europe’s new banking regulator stated recently: A stress test is only as good as the scenarios you plug into it
Therefore, make stress tests 'idiot proof' as much as possible.
Once a stress test is developed, don't present it to the board directly. Organize a 'second opinion' from a professional company that's undependable and critical enough to seriously test and analyze your stress test and its assumptions.
Presenting a stress test without clear statements about the limits, vulnerabilities, constraints and shortcomings (every test has shortcomings) is like playing with fire and offering your board 'the wrong end of the stick'.
So we can add another conclusion quote:
A good stress test transparently presents its weaknesses
If nobody can find a weak spot spot in your stress test: ask a 5 year old child to ask some simple questions.....
Compare Stress Tests
Please think about :
'One stress test' = 'No stress test'
Comparing successively executed stress tests on assumptions, methods and outcomes is essential for a correct understanding of the impact and consequences.
Not only compare tests of your own company, compare also with tests of other financial institutions. Questions like: why do we as a [pension fund] have different assumptions and methods than an international [bank], are key to a correct understanding of your own risks.
Surpass Regulator Constructed Stress Tests
Regulator Constructed Stress Tests(RCS-tests) seem relatively easy to implement.
As a risk manager or board member you don't have to think about scenarios or methods. That's all been taken care of by the Regulator. Easy, isn't it?......... Wrong!
Heedlessly implementing RCS-tests is risky. First of all, the regulator's principles are partly biased. As an example, take the risk of treasury bonds on your balance sheet. Treasury bonds are commonly seen (and valued) as save (AAA-rating). However, some countries (Greece, Spain,Ireland etc.) have already been downgraded. Which countries will follow? Does the RCS-test includes this non-hypothetical risk? No? Does your own test includes this risk?
By definition regulators have to act and communicate in a responsible and 'prudent' way about government financial issues. If they wouldn't, world wide financial chaos would be the inevitable result.
The other side of this 'prudent coin' is that the actual risks are probably larger than can be concluded from the government (treasury) interest rates and interest spreads in a particular country. Here you'll have to develop your own risk model or - if data fail - formulate your own risk approach (get out!).
Key is that, given the general level of systemic risk, all financial institutions must be able to withstand haircuts on all their own sovereign debt holdings.
A 'third side' of this coin is the fact that regulators (in time) might decrease risks on certain asset categories that are not in line with your own risk view. Stay awake to prevent from becoming 'Supervisory Stress Compliant'.........
Unmask Derivatives
Market valuation with respect to derivatives is tricky business and probably only valid as long as there's a 'normal' market activity. Nobody is able to value derivatives under severe market conditions as is the case in stress tests. So, depending on the size and characteristics of a stress test, don't hesitate to to unmask your derivatives by applying a large discount on the value of your derivatives.
Conclusion
Stress testing is not for dummies, but for professionals.
It turns out that the more you're able to look different, critical and 'out of the box', the more stress testing will be successful.
Making your audience aware that a coin has three sides instead of two, is probably the essence of an actuary's or risk manager's profession.
It has become clear that analyzing assumptions, models, outcomes,constraints and shortcomings of a stress test is no superfluous luxury. So stress test your stress test!
Actuary Info is a brain teaser Blog with non-conventional, witty, remarkable and serendipitous financial and actuarial related news.
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One of the trickiest parts of Risk Management is that we often are trying to avoid Risk at any price.
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