Investors are holding more cash than at any time since the Lehman Brothers collapse to protect themselves against volatile financial markets, presenting them with a dilemma - where to hold that money when banks are looking shaky.
When the European Central Bank stepped up efforts to provide liquidity to banks in late 2011, financial markets settled down and the chances of a catastrophe scenario, in which banks fail and depositors lose their money, became more remote.
But investors are still mindful that the unthinkable, while highly unlikely, is not impossible, giving pause for thought to institutions and wealthy individuals with sums too large to be covered by existing compensation schemes.
A monthly survey of British investment managers showed in December cash holdings were at their highest for more than two years, prompted by worries over the euro crisis.
The panic about bank solvency has not yet reached the levels seen in the wake of the collapse of Lehman Brothers four years ago, investors said. One senior private banker said at the height of the post Lehman turmoil in 2009, a particularly eccentric rich client had enquired about putting large amounts of their wealth in gold and then burying it on their land.
But closer scrutiny of counterparty risks by investors is currently leading to more use of alternatives to bank deposits like short-dated debt issued by AAA-rated governments or cash-like instruments such as money market funds.
It's a small chance it'll happen but it's big enough that we think there's no point in looking for a few extra basis points (of investment performance) for taking the risk, said William Drake, co-founder of London-based investment manager Lord North Street.
Drake said the firm favors putting more money in short- dated UK government bonds as an alternative to deposits in a bank, while the crisis continues.
We think you should be absolutely sure you are going to get 100 pence back out of every pound you put in. he said.
Britain's Financial Services Compensation Scheme guarantees recovery of up to 85,000 pounds ($134,800) per person if a bank fails, protecting the savings of most people but falling short of the amounts deposited by rich investors or institutions.
David Scott, chief executive of London-based upmarket investment manager Vestra Wealth, favors parking clients' cash in UK banks that were bailed out by the government during the earlier crisis of 2008 to 2009.
Royal Bank of Scotland
Having stopped people losing their savings once, the British government is likely to do it again should the need arise, Scott argues.
There's no way the UK government will let a high street bank go, he said.
Xenfin Capital, a London-based hedge fund trades using a small amount of the capital it holds for its clients, mostly very rich private investors, placing the rest on deposit at cooperatively-owned Dutch lender Rabobank
Unlike its main Dutch rivals ABN AMRO
We use Rabobank as a counterparty due to their high credit standing, and due to the fact that the London FX Prime Broking desk only deals in spot FX, and has no exposure to more exotic instruments, said Nick Hocart, head of business development at Xenfin.
Many of the investors contacted by Reuters said they are less nervous now about the chances of financial catastrophe than they were during 2008-2009.
Efforts by monetary authorities late in 2011 to provide liquidity to struggling European banks are widely seen as evidence of firm political will to avert collapse, said Rob Burgeman, a divisional director at investment manager Brewin Dolphin
You have to do your due diligence but at the same time if you are with a basket of blue chip banks it is inconceivable that the world will watch this go to hell in a handcart, he said.
But four years of financial crisis and extreme events like Lehman Brothers have undermined assumptions about banks and led to long term shifts in attitudes about how to manage cash, said Frances Hudson, global strategist at Standard Life Investments.
Lehmans started counterparty risk awareness and that'll be a lesson that will stay with us for some time, she said.
One would hope things would ease at some point but there's still a credibility deficit from governments and from the banking system. ($1 = 0.6306 British pounds)
(Editing by Mark Potter)