To make smart money, astute investors should keep an eye on the regulatory filings of the top money managers. Most of them have significant exposure to the so-called magnificent seven stocks — Microsoft, Apple, NVIDIA, Amazon, Google parent Alphabet, Meta Platforms and Tesla, as well as other noteworthy AI stocks.But this isn’t the case for billionaire hedge fund manager Bill Ackman, the CEO of Pershing Square Capital Management. He is well-known for keeping a selective number of stocks in his investment po ...