Cathie Wood has cooled her buying activity in recent days. The co-founder and CEO of Ark Invest lightened a few positions on Monday, but she didn't add to a single stake. It's rare for her not to make any additions, but she was light on the trigger finger last week, too. She only bought shares of one company in two of the final three trading days of last week.

Ask Invest bought into just three stocks on Tuesday. Wood added to her stakes in Palantir Technologies (NYSE: PLTR), Datadog (NASDAQ: DDOG), and Rocket Lab USA (NASDAQ: RKLB) on Tuesday. Let's take a closer look at her three latest purchases.

The good news is that shares of Palantir have more than tripled since the start of last year. The bad news for recent investors is that the stock had more than quadrupled when it peaked two months ago. The software developer for the intelligence community took a big step down on Monday, after posting poorly received financial results.

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Source Fool.com