Thiel sold over $1 billion worth of Palantir stock over the last few days of September and the first day of October, according to Securities and Exchange Commission ( SEC) filings. Those sales came after the company officially joined the S&P 500 on Sept. 23. Thiel also shed about $400 million worth of Palantir stock earlier this year.

Peter Thiel sold almost $600 million of Palantir Technologies Inc. stock this week, bringing his total disposals this year to more than $1 billion. He sold more than 16 million shares over three days this week, according to a regulatory filing, adding to the 20 million shares he sold in March and May.

Palantir Chairman Peter Thiel just sold big blocks of shares of the data-analytics firm, and he still has a substantial amount of stock to sell. Thiel sold 16,178,415 Palantir shares from Tuesday through Thursday for a total of $597 million,

As data mining firm Palantir’s shares continue to climb, Thiel is cashing out. He’s not the only Palantir insider doing so.

Peter Thiel, a co-founder and current chair of data analytics company Palantir (PLTR), has sold nearly $600 million of company stock. According to

Peter Thiel, the Chairman of Palantir Technologies (NYSE:PLTR), sold over $600M worth of the company's stock this week, bringing his total disposals this year to over $1B. In December last year, Palantir disclosed that entities owned by Thiel had adopted a type of trading plan which public-company executives commonly used to schedule sales.