On December 29, 2023, Renaissance Technologies, led by Jim Simons (Trades, Portfolio), made a notable adjustment to its investment in Potbelly Corp (NASDAQ:PBPB), a company known for its sandwich shops. After this transaction, Renaissance Technologies holds a total of 1,469,154 shares in Potbelly Corp, which corresponds to a 5.00% stake in the company and a 0.03% position ratio in the firm's portfolio, despite the trade having a 0% impact.