What is the sentiment of this news? Please choose an answer from {strong negative/moderately negative/mildly negative/neutral/mildly positive/moderately positive/strong positive}.

Cathie Wood-led Ark Investment Management bought over 31,000 shares of Nvidia Corporation (NASDAQ: NVDA), via two of the firm's exchange-traded funds, valued at over $4.2 million based on Tuesday's closing price.
moderately positive