Societe Generale: From Napoleon III's Decree to the Kerviel Trading Scandal

Paris. Sunday night, the twentieth of January, two thousand and eight. A handful of executives in a room, staring at a number on a screen. Fifty billion euros of positions nobody knew existed. Put there by one trader. And they have about three days to get out of every single one of them without a person on Earth noticing.

Without anyone noticing? That's like sneaking an aircraft carrier out of a harbour. In daylight.

And if they're seen, the bank is finished. Nearly a hundred and fifty years old... gone by Wednesday.

Okay. So how does a bank that old end up in that room? Who even started it?

<cite index="20-1">On the fourth of May, eighteen sixty-four, Napoleon the Third signed a decree creating Societe Generale, with the mission of promoting the development of trade and industry.</cite> Not a garage. Not a pitch deck. A decree.

The original top-down launch.

<cite index="21-3">Behind it were three men. Joseph-Eugene Schneider, a captain of industry. Paulin Talabot, an entrepreneur. And Edward Blount, a diplomat.</cite> <cite index="21-5,21-7">Schneider had taken over the Creusot forges and turned them into the largest factory in Europe. They called him the King of Iron, and he was the one close enough to the emperor to get that signature.</cite>

So the founding move was... knowing a guy.

The founding move was knowing THE guy. And it worked, fast. <cite index="22-5">By eighteen seventy they had fifteen branches in Paris, thirty-two in the provinces, and a permanent London office a year later.</cite>

And it just stays in private hands the whole time?

No. After the war, France took the banks. <cite index="36-1,36-2">Britannica dates the takeover to nineteen forty-six, acting on legislation passed the year before, when the state took over the Banque de France and the four leading commercial banks, which between them held about half of all French banking assets.</cite> <cite index="36-3">Societe Generale doesn't get privatised again until nineteen eighty-seven.</cite>

Eighty-seven. So it walks back into the market exactly as finance gets... weird.

As finance gets mathematical. And that's where the identity forms. <cite index="31-2">Reporting on the scandal years later still described the bank as having long had a reputation for cutting-edge financial engineering.</cite> Equity derivatives. Clever products. French quants were legendary. Hold onto that, because it's the thing that nearly kills them.

A brilliant reputation right up until it isn't.

So. Back to January. <cite index="32-1">The bank's own account says that on the eighteenth, alerted by its control systems, it investigated and found that a trader, Jerome Kerviel, had created fictitious trades to conceal a transaction.</cite> <cite index="32-6">Over the nineteenth and twentieth, they uncover massive positions totalling some fifty billion euros, hidden behind fake trades.</cite>

One person. How do you even hide something that size?

Trades that don't exist, booked to balance out the ones that do. On paper, nothing's there. <cite index="32-7">So on Monday the twenty-first, and the three days after, the bank liquidates the lot in the greatest secrecy, while complying with market rules.</cite> <cite index="33-1">Three days of trading, in a period when equity indices were falling hard.</cite>

Oh, that's brutal. They're selling into a falling market and they can't tell a soul why.

<cite index="32-8">Then on the twenty-fourth of January they go public. The fraud, and the final loss. Four point nine billion euros. And in the same breath, a capital increase they'd already secured.</cite>

Hang on, though. Is it genuinely credible that nobody above him knew? Because that's what everyone thinks.

That's the live dispute, and it never fully closed. <cite index="31-5">Kerviel maintained the bank and his bosses tolerated his risk-taking as long as it made money.</cite> <cite index="33-3">He also argued the losses were caused by panic selling by the bank itself.</cite> The bank says no. He knew the limits, and nobody encouraged him.

And the court took the bank's version?

<cite index="31-1">Convicted on all counts. Five years, two suspended. And damages of four point nine billion euros, a sum so staggering it drew gasps in the courtroom.</cite> <cite index="31-4">Forgery, breach of trust, unauthorised computer use, covering bets worth nearly fifty billion.</cite>

Sure. He'll wire the four point nine over on Friday.

<cite index="31-0">Reporting at the time said it plainly. A punishment nobody realistically expects him to repay.</cite>

But the bank lives. That's the headline. It survived.

It survived. And then it paid, for a decade. <cite index="41-5,41-6">In June twenty eighteen it agreed to one point three billion dollars over bribing Gaddafi-era Libyan officials and manipulating Libor. Five hundred and eighty-five million on the Libya scheme, two hundred and seventy-five million on Libor.</cite>

And that's one year. One.

<cite index="42-2,42-3">That November, another one point four billion dollars to US authorities, one point three four of it over dollar transactions that violated US sanctions.</cite> <cite index="42-9">From two thousand and three to twenty thirteen, authorities said, it had executed billions in illegal transactions involving Iran, Sudan, Cuba and Libya.</cite>

What did they actually say about that? Banks usually say nothing.

<cite index="42-7,42-8">Frederic Oudea, chief executive at the time, said they acknowledged and regretted the shortcomings, and that these resolutions let the bank close a chapter on its most important historical disputes.</cite>

So who's running it now?

<cite index="49-1">Slawomir Krupa, chief executive since May twenty twenty-three, after twenty-six years inside the bank.</cite> And here's the lovely bit. <cite index="48-7">From twenty sixteen to twenty twenty-one he ran Societe Generale Americas, rebuilding the relationship with the Fed</cite><cite index="48-3">, negotiating with the US over exactly those embargo, Libya and rate-rigging cases.</cite>

The guy who cleaned up the mess got the keys.

And what's he doing with them? <cite index="49-9">Slimming down the risky activities that were the bank's hallmark. Derivatives.</cite> <cite index="47-7,47-8">The twenty twenty-three plan targets a cost-to-income ratio under sixty percent by twenty twenty-six, and a return on tangible equity of nine to ten percent.</cite> Boring. Deliberately boring.

A bank founded by an emperor, aspiring to dull.

And that's the thing worth taking home. The skill that made Societe Generale famous, that brilliance with derivatives, is the same skill that almost ended it. <cite index="32-2">Its own published account of the affair asks the question out loud. Why didn't the bank know?</cite>

Because the thing you're best at is the thing nobody checks.

That's it. Whatever you're brilliant at is where your blind spot lives. The alarm went off on a Friday... in the one room nobody thought to watch.