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Hello and welcome to Slate Money, your weekly guide to the Important Business and Finance News of the Week.

I'm Felix Salmon, a fusion in New York.

And on the show this week, the Supreme Court decided the fate of Aereo, an internet television streaming service.

We'll dive into dark pools amid allegations that Barclays put its profits ahead of its customers.

Imagine that. and we'll also tell you why lots of

rich people are spending at least 183 days a year in Puerto Rico, I think you can probably

guess.

And last but certainly not least, we'll close with the numbers lightning round as we do every week.

First, let me introduce regular guest, Kathy O'Neill, head of the lead program for data journalism

at Columbia University.

Hello Kathy, what's your number this week?

My number is 0.25.

That's a low number. And we also have

slate's own moneybox columnist Jordan Weisman Jordan I'm assuming that your

number is going to be bigger than one quarter?

...