Trump had a negative 89% stock return according to a graph at the link while the average Dow Jones casino index gain for gaming companies was 160%.
So, a 160% overall gain for casinos versus an 89% loss for Trump.
“For 10 years between 1995 and 2005, Donald Trump ran Trump Hotels & Casino Resorts – and he did it so badly and incompetently that it collapsed into Chapter 11 bankruptcy. His stockholders were almost entirely wiped out, losing a staggering 89% of their money. The company actually lost money every single year. In total it racked up more than $600 million in net losses over that period.
Trump was chairman of the board throughout the entire time, and CEO as well for about half of it.”