Earlier quoted context omitted.
> Parking money in index/hedge funds is not "investing it back in the economy". Of course it is. What do you think those funds invest in? Piles of cash? > Bank lending is driven by demand, not deposits. If that were true, banks wouldn't need deposits and certainly wouldn't offer free checking. They're not charities.
Buying a stock on the secondary stock market is not investing in the economy. Buy that logic, high-frequency traders are investing in the economy. > If that were true, banks wouldn't need deposits That doesn't follow from what I said. Banks are required by law to back their loans up with reserves. So when they don't have enough reserves, they borrow on the interbank lending market or from the central bank. http://www…
Of course it is. Buying a piece of a company is investing in it.
> Buy that logic, high-frequency traders are investing in the economy.
And they are - even if they hold a particular stock for a millisecond. The aggregate invested across the market is what matters.
It's a bit like calculus. All those infinitesimal bits add up to real amounts.
> That doesn't follow from what I said.
Maybe you can explain why banks offer free checking.