On August 23, 2023, Renaissance Technologies, led by Jim Simons (Trades, Portfolio), executed a notable transaction in the stock market by adding 325,815 shares of PetMed Express Inc (NASDAQ:PETS) at a price of $11.33 per share. This addition has increased the firm's total holdings in PetMed Express to 1,344,284 shares, reflecting a 0.01% impact on the portfolio and marking a 6.36% ownership in the company.