PARIS, March 15 — In the wake of the collapse of Silicon Valley Bank that has shaken world markets, Nobel economics prize laureate Joseph Stiglitz told AFP that US authorities "did the right thing" to protect deposits but said the financial system needs a rethink.

Has the risk of a major financial crisis been averted?

"That's one of the things that one can't tell. The banks are sounder than they were before, in 2008. There has been progress, not as much as there should be. But the new technologies make runs much easier, which people didn't fully think about.

They used to think that bank accounts were sticky. But if everybody has internet banking, it's much easier to take your money out and put it somewhere else. The question about the stability of the financial system has to be rethought, recognising the new technologies.

And I'm not sure that it has been done. Before the SVB collapse, there had been very little discussion about how technology had changed the probability of bank runs. But now there's a lot of discussion."

You have said SVB's collapse was foreseeable. Will others fail in the coming days?

"The banking system is very complex. There are always rumours about particular banks who have vulnerabilities, and unless you know their balance sheets, their exposures and (how they've done) with the stress tests, you can't really know.

There may be rumours. What was interesting about one particular aspect of SVB was that there were no negative discussions about its lending portfolio. In most bank runs in the past, like in 2008, the complaint was 'silly banks have made loans for mortgages that were basically fraudulent'.

We didn't realise in 2008 the magnitude of the fraud that all the major banks had engaged in. Only after the mass of suits that went on, we saw how bad things were, but we knew that the lending was bad.

In this case its not a lending problem, it's a maturity mismatch and that can happen anywhere in our economic system."

What do you think of the reaction of US authorities?

"There was an enormous stress from Thursday to Sunday night. In the end they did the right thing I think, but they reacted very slowly. It would have been a lot better if they had acted more quickly, and in particular assuring that the depositors with more than US$250,000 were not going to lose their money.

But the most important thing, in terms of the macroeconomics, is they finally assured those with deposits over US$250,000 they would be able to get their money back. If they hadn't done that, (there was a) possibility of a massive financial crisis or a massive movement to the too big to fail banks.

One has to understand the amount of stress that that put on all the workers in the whole sector. It's a trauma from which I think they will have longer lasting effects." — AFP