Cynthia Koons

JPMorgan Tests Its Amazon-Berkshire Health Venture On Bank Employees

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The new plans don’t require the employees to pay deductibles, unlike their existing insurance offering.

Billionaire Paulson Joins Valeant Board After Ackman's Exit

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Paulson's firm became Valeant’s biggest shareholder after Bill Ackman bailed out in March.

Ackman Sells Valeant Stake After At Least $2.8 Billion Loss

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Billionaire Bill Ackman’s big, concentrated bets and brash personality have made him one of the most polarizing names in investing.