Stanley Druckenmiller dumped more than 2 million Uber shares, but other tech names like Netflix and Amazon are getting plenty of love from billionaire money managers

Reuters / Brendan McDermid

Stanley Druckenmiller soured on Uber in the third quarter.

• New regulatory filings posted Thursday detail the biggest stock purchases and sales from billionaire fund managers in the third quarter.
• Investors like Stanley Druckenmiller, Carl Icahn, Chase Coleman, and more, made significant changes to their multi-billion-dollar portfolios. Druckenmiller sold more than 2 million shares of Uber in the third quarter.
• The hottest buys were well-known tech stocks - Amazon, Netflix - that have been beloved by these investors for years. Chase Coleman's Tiger Global increased its bet on Alibaba as well.
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Competitors, analysts, journalists, and more all just got their quarterly peek inside the stock portfolios of the biggest fund managers in the world.

Secretive funds like Chase Coleman's Tiger Global revealed the changes they made to their holdings in the third quarter, and some of the biggest names were very active.

Billionaire Carl Icahn sold off some of his third-biggest holding, Occidental Petroleum, which is currently trading at a low for the year, filings showed on Thursday. Stanley Druckenmiller's family office ditched almost all of its Uber stake, selling more than 2 million shares in the quarter.

Continue reading below to see some of the biggest moves from the biggest managers.