Billionaire investor Bill Ackman is having a remarkable year, with his net worth soaring to $9.2 billion in 2025, up from $4.3 billion in 2024, according to Forbes. The surge comes on the back of exceptional performance by his hedge fund, Pershing Square Capital Management, and its flagship investment vehicle, Pershing Square Holdings, reports Barron's.Pershing Square Outperforms S&P 500Pershing Square Holdings, a London-listed closed-end fund also trading on OTC Markets under the ticker PSHZF, has delivere ...