Bill Ackman is reshaping his investment approach to mirror Warren Buffett's long-term model, emphasizing infinite time horizons and permanent capital. The billionaire investor argues that this strategy should yield enormous rewards over time. His latest moves suggest a fundamental shift from activist investing to building durable businesses.

Ackman's pivot comes as traditional hedge fund strategies face increasing scrutiny. By adopting Buffett's patient capital model, he aims to create sustainable value rather than pursue quick wins through proxy fights and board shakeups. This transformation represents a significant evolution for the investor known for high-profile activist campaigns.

The timing is notable as markets grapple with volatility and investors seek stability. Ackman's bet on permanent capital could signal a broader trend among activist investors moving toward longer-term ownership models. His success or failure may influence how other prominent investors structure their funds going forward.