One of the biggest trends of 2020 in markets has been the stunning explosion in stock trading among amateur investors.
It has been a phenomenon seen on both sides of the Atlantic and has been driven largely by millennials.
In the UK, hundreds of thousands of young investors have this year signed up with platforms like Freetrade, attracted by commission-free trading and the chance to make more meaningful returns than they can obtain from keeping cash on deposit.
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Dave Portnoy rechristened himself 'Davey Day Trader' during the lockdown
In the US, meanwhile, the trend has been even more pronounced.
There are a couple of reasons for this.