I was impressed when I learned that Oprah Winfrey made $71 million in just one day.

But the performance on Friday of Jeff Bezos--to say nothing of that of Larry Page, Sergey Brin, Mark Zuckerberg, and Bill Gates--makes her haul look like chump change.

Earnings reports came out Friday, and tech stocks soared on the news. The biggest winner of all was Bezos, because Amazon's stock closed at $599.03 per share on Friday. That represented a 6.2 percent jump in one day, which increased the value of Bezos's stake by $2.9 billion.

That means his net worth is now $53.2 billion, which means he lags behind only Gates and Warren Buffet as the third-richest American, according to Bloomberg.

(The reason for the jump: Amazon analysts and shareholders had braced for an expected loss of 13 cents per share, but the mega-retailer reported instead that it was in the black for the quarter--a 17 cents per share profit.)

He wasn't the only winner though, as Alphabet (the new parent company of Google), Facebook, Microsoft, and other technology stocks jumped, too. Here's how some of the other tech giants fared:

Larry Page, CEO of Alphabet saw his net worth jump at least $2.5 billion. (Alphabet stock rose 5.6 percent Friday, on news that its profit was up 16 percent from the same period a year ago.)

Page's co-founder, Sergey Brin's fortune rose $2.4 billion as a result of the same news. (They might not be celebrating that much however, since it's not the most they've seen in paper profits in a single day this year. On July 17, they made about $8 billion between them, according to Business Insider.)

Meantime, Microsoft rose 10 percent on the day--which meant the 223.4 million shares that Gates still owns gained $1.1 billion in value over the trading period. (Gates has sold a lot of stock over the years to fund his philanthropy.) And, Facebook (which hasn't even released its earnings report yet) rose another 2.5 percent, meaning Zuckerberg likewise made $1.1 billion on his stake.

In fact, if you add up the paper profits that just these five men made in a single day, it works out to $10 billion. To put that in context, it's more than the annual GDP for some small countries--more than The Bahamas for example--or as USA Today put it, "a big slice of the $90 billion in total market value created for all investors who own these shares"