Monday 31 October 2011

Should France still be Triple A?

During the recent negotiations in Brussels around the European sovereign credit crisis, the French President Nicolas Sarkozy was heard whispering to one of his advisors: “If we loose our Triple A, I'm dead...”. Politically speaking that is to say.

When I read that story, I actually wondered how come it's not already done by now. And here, I am obviously talking about the Triple AAA rating that France has managed to keep so far, even though I am not exactly one of Sarkozy's fans.

Indeed, it intuitively sounded to me like the data that could be gathered around France, both on a stand alone basis and on a comparative basis, would not be shiny. But I had to confess that I had never checked for myself in details. So to be as fair as possible, I decided to give it a go. And here is the outcome.

Zooming on France itself, the main macro-economic benchmarks and public budget data which can be extracted from the IMF and OECD public databases speak for themselves. Indeed it appears that between 2007 and 2010:
→ The average annual GDP growth was as low as 0.77%;
→ The public debt increased from 2.70% of the GDP to 7.00% of the GDP;
→ The public deficit increased as well, from 64.22% of the GDP to 82.33% of the GDP;
→ The average unemployment rate hit 8.87%.
Looks pretty bad for a Triple A nation...

Now, one could argue that during that period, the whole world underwent a massive financial crisis which heavily impacted all major economies. And that is indeed true. Hence the necessity to conduct a comparative analysis to check how well or bad France has actually managed the crisis versus other big players, including also being Triple A.

To do so, I got hold of the annual GDP growths, the public debt levels and unemployment rates of all 17 Euro zone countries for years 2007 to 2012 (IMF data, using their economic analysis department forecasts for 2011 and 2012). Then, I ranked these countries by averaging their “performances” on these indicators (using equal weights for all 3), and added their current S&P sovereign ratings next to the output. Finally, for benchmarking reasons, I computed the same elements on the G7 countries which are not part of the Euro zone, and on the BRIC countries (minus the ranking).

The indicators selection and the computing method are of course not perfect, but sufficiently representative for a high level analysis, and they give a good sense of who stands where. They use very significant indexes which truly reflect the health of an economy and the quality of public budget management, and project those in 2012, just like rating agencies do when assessing sovereign ratings. And as a matter of fact, the figure below confirms that France is not doing so well:

In brief, France end ups ranked number 12, with averages of 0.64% for the GDP growth, 78.32% of the GDP for the public debt and 9.03% for the unemployment rate. All other AAA countries of the Euro zone have better ranking, and even countries like Cyprus with a BBB rating come on top of France. And looking down at the BRIC countries which all have poorer ratings than France,well...

To close the loop, I ran a similar analysis on all Euro zone, G7 and BRIC countries which hold a Triple AAA rating today. There 8 of them. And ranking them, France comes last:
In conclusion, I don't hold a crystal ball, but it may get tough for France to hold on to its platinum rating. And if a downgrade does happen, one of the two Euro zone leaders will be hit. May get a bit shaky then, and not only for the French President...

Cheers,
Olivier

Thursday 27 October 2011

Delta hedging in practice: back to the basics?

Sometimes, I try to put on fancy trades. Some work well. Some not so well, even if the overall balance is in my favor (at least so far... :-) ).


Then the other day I remembered that some guy once said that "the best trades are always the simplest ones". So I thought "what about the old delta hedging trick for a change?". It's simple. It's been explained numerous times in the academic literature, with Hull and Natenberg at the top of the list. Every derivatives market apprentice went through it again and again before each interview...

So I told myself: just buy cheap options or sell expensive ones, then continuously hedge the resulting delta at no transaction costs based on the future realized volatility. Like in the books... Continuously... At no transaction costs... Based on the future realized volatility... Hein!

Guess you got me here: not that simple in practice right! One needs to assess the impact of discreet re-balancing, transaction costs and volatility forecasting accuracy on the performance of trades. And that's when we start discussing delta - gamma hedging, daily re-balancing efficiency simulations, GARCH models...

Does not mean it's not possible to make money out of this strategy. Just means it takes a bit of reading and analysis to pick the right spots with the right tools.

On the reading part, thank god some smart dudes put some thought into it. So let me share the following links:

-> Michael Kamal and Emmanuel Derman on the risks associated to non-continuous hedging:
http://www.ederman.com/new/docs/risk-non_continuous_hedge.pdf

-> Riaz Ahmad and Paul Wilmott on volatility arbitrage and delta hedging:
http://www.math.ku.dk/~rolf/Wilmott_WhichFreeLunch.pdf

Hope you enjoy those!

Cheers,
Olivier

Wednesday 26 October 2011

EURUSD Free Fall

Great day for a first post!


When I opened my browser 2 hours ago to create this blog, EURUSD was trading above 1.39 and even reached 1.3965 plus a bit later. And then... withing 50 mins it dropped to 1.3805!


We all know the reasons for this, or at least people keeping an eye on the markets do know. Other have can have a good guess just by watching the evening news. Since last July, EU leaders have been the live actors of the poorest crisis management in modern financial history...
Indeed, 3 years after shooting at bankers, traders and their bonuses, making them responsible for anything even vaguely related with the word "credit", European politicians are now proving us that:

-> It's easier to pretend to be united when the wind blows in the right direction, making Euro-skeptics smile and others wonder if we should not have either (1) done nothing or (2) gone the whole way, when we discussed and signed the Maastricht Treaty in 1992;

-> It's tough to add up integers and reach equilibrium when you are a professional politician chasing re-election;

-> When time has come to take tough decisions, none of them is strong enough to stand the pressure of the street.

Looks like it's easier to criticize bankers than to manage a public deficit...


Anyway, that being said and back to trading, the comment of the day if that more than ever, this situation has lead to a lot of headline trading quickly dismissed after news turn into fake rumors.

One of the best examples is probably the EURUSD 50 pips rally during NY hours on Oct. 18 after the Guardian announced that France and Germany had agreed an increase of the EFSF envelope to EUR 2 trillions (see http://www.guardian.co.uk/business/2011/oct/18/france-and-germany-move-towards-2tn-euro-fund). Indeed the "news" got proved unfounded 30 mins or so later, leading to a violent reversal.

And the same thing happened today again: market players are really nervous about the EURUSD and over-react on any rumor, getting the spot to swing all over. But it does not take much to dig a bit behind the headlines by sticking to the fundamentals of the situation and ripping profits on the way.

Because all in all, the public deficit issues of the PIGS (and France soon??!!) combined with the hassle of finding an agreement 17 voices are preaching their own interest will no matter what make this process long and painful. So no magic will happen and sticking to the basics rather than trading on the sneezing of some finance minister should help one's P&L.

Actually, in a parallel world, there would be a solution, but it'd take to have Warren Buffet as President:

"I could end the deficit in 5 minutes. You just pass a law that says that anytime there is a deficit of more than 3% of GDP, all sitting members of Congress are ineligible for re-election".


Cheers,
Olivier