What you need to know on Wall Street today

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JPMorgan's quant guru, Marko Kolanovic- a man whose opinion is valued so highly that it can move markets - doesn't think investors have learned their lesson from the meltdown that rocked stocks in early February.

That's because they've become used to a low-volatility environment - one that hasn't been conditioned to withstand sharp fluctuations. As a result, outsize price swings can hamper liquidity, making it difficult for markets to function properly when it's most crucial, says Kolanovic, JPMorgan's global head of quantitative and derivatives strategy.

If this dynamic still isn't clicking for you, Kolanovic offers a handy analogy, comparing market liquidity to Uber. Here's our story.

In other news, Larry Fink, CEO of $6.3 trillion manager BlackRock, said financial firms have 'done most investors poorly' - and laid out his ideal scenario for the next 10 years.

Elsehwere in finance news, Point72's head of HR is leaving, following the firm's former president out the door.

In markets news, the stock market's most important driver has already peaked - but Bank of America offers 5 reasons why you shouldn't panic.

And a top Wall Street strategist pinpointed the reasons why tech is going to become a stock market underdog.

Speaking of tech, there's a bunch of news to get through. Here goes: