Why Is Bill Ackman Selling His Stake in Canadian Pacific?

The transcript discusses Pershing Square's portfolio rebalance, focusing on its investment in CP Rail and the challenges faced by the company. It highlights Bill Ackman's influence on Valeant Pharmaceuticals, including his efforts to address debt and asset sales. The transcript also covers market expectations for Valeant's upcoming report, noting potential challenges and liquidity concerns.

What actions has Ackman taken regarding Valeant's leadership and practices?

What financial concerns are associated with Valeant Pharmaceuticals as mentioned in the text?