If you like stock trading, perhaps you'll like more hours of it.

I'm David Brancaccio. The New York Stock Exchange has announced plans to extend its hours.

If regulators approve its electronic platform Arca will be on 22 hours a day Monday through Friday,

up from 16, with a pause in the middle of the night, eastern.

This is the after hours or pre-market trading that you hear about, but more of it.

Marketplace's Savannah-M-R reports.

The lights are on at the New York Stock Exchange from 930 to 4 p.m. on weekdays. But a growing volume of trades are ordered outside those regular

hours on Arka, according to Evan Raleigh at the University of Connecticut.

People in Asia, people in Europe, you know, some people in the US after work want to go in and put in a trade.

The NYSE wants to extend Arca's window by a few more hours, as Raleigh says, established exchanges are facing more competition.

They're afraid that people are going to go to, say, Robin Hood, which allows users to trade certain stocks around the clock

Monday through Friday. So extended after hours could keep more trades moving through New York's

platforms.

Justin Schack with Rosenblatt securities says there's a relatively small constituency rooting

for this change.

And that's basically retail investors. But these non-professional traders could end up paying higher transaction costs at odd hours.

And Shax says institutional investors, plus the thousands of companies listed on the New York Stock Exchange.

May not be so excited about the prospect of trading going on for 22 hours a day.

In part, Shaq says because they'll need to staff up to react to late night price moves.

I'm Savannah Mar for Marketplace.

Now frustrated by what he sees as aggressive regulation in Washington of financial institutions,

the CEO of the biggest bank told an industry group yesterday that he's quote,

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