On Thursday,Cathie Wood-ledArk Investmade significant trades, withPalantir Technologies Inc.(NYSE:PLTR),Tesla Inc.(NASDAQ:TSLA),Reddit Inc.(NYSE:RDDT), andAmazon.com, Inc(NASDAQ:AMZN) taking center stage.

The Palantir Trade

Ark Invest's move to sell Palantir shares comes amid a tumultuous day for the company. Palantir's shares experienced a rollercoaster ride, initially dipping due to a downgrade from Jefferies, only to bounce back following an announced partnership withAmazon Web Services(AWS) andAnthropic.

Despite Jefferies analystBrent Thill downgrading Palantir from a Hold rating to an Underperform rating due to valuation...