Cathie Wood had one of her busiest days on the trading floor in months on Tuesday. The co-founder, CEO, and ace stock picker at Ark Invest added to 17 different existing positions across her aggressive growth exchange-traded funds in a single day.

Cathie Wood’s comeback could continue through the year as most of her Ark Invest funds come roaring back alongside the tech trade. Though her broad basket of Ark funds hasn’t been as booming as your run-of-the-mill tech-centric index ETF (exchange-traded funds),

Cathie Wood and Ark Invest sold roughly $19.4 million worth of Palantir stock on February 11 and redirected funds toward defensive stocks.

Cathie Wood is the CEO and chief investment officer at ARK Investment Management. One feature that differentiates Wood from her peers in the wealth management industry is her appetite for more-speculative opportunities -- often assuming higher degrees of risk compared to blue chip stocks.

Star portfolio manager Cathie Wood’s Ark Investment Management filed its 13F holdings report for the fourth quarter on Feb. 4.  As usual, there were many moves into and out of the investment management firm’s holdings.

Cathie Wood and Ark Invest sold roughly $7,379,804 worth of Palantir stock — and spent $9,145,824 on three biotech stocks.

Cathie Wood, head of Ark Investment Management, is known for making bold bets — but she’s not afraid to change course when the market proves her wrong. That’s what she did this week. She unloaded a tech stock that tumbled nearly 50% last year.