Why would I trust him? Vivek scammed his American investors and became rich after claiming he had the cure for Alzheimers.

The Pump-and-Dump Scammer, Vivek Ramaswamy. 
Dr. Greg Maguire, Ph.D.

With money from QVT, a hedge fund, Vivek’s company purchased a failed drug from GSK, renamed it, and performed a non-scientific post-hoc analysis of the failed drug where they cherry picked data and spun it to pump up the company’s stock. 

Once the stock price soared after the media, such as CNBC, talked up the stock, Mr. Ramaswamy sold-off (the dump part) a big portion of the stock. 

Once the company’s own clinical trial failed, the stock crashed and investors lost their money, but Ramaswamy was sitting high on a pile of cash from his pump-and-dump scheme.