Ackman sees an impressive turnaround story in the future for this top brand.Bill Ackman is well-known for buying large stakes in what he believes are undervalued companies and using his influence as a major shareholder to push management to make changes to unlock value.In May, Ackman revealed that he had established two new positions in his Pershing Square hedge fund, which holds an equity portfolio valued at over $10 billion. One of those positions, Brookfield Corp, has performed well since Ackman establis ...