By CNBC hedge fund specialist Maneet Ahuja and "Squawk Box" host Becky Quick.
About Maneet Ahuja and Becky Quick
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Finance
Activist Investor William Ackman Makes His Biggest Bet Ever
Ackman's firm Pershing Square Capital Management has acquired a 9.8 percent position in industrial gas company Air Products & Chemicals, a stake valued at $2.2 billion.