Author: mcastor

Michael Castor is the author of this blog, “Quintessential.” Michael is also the portfolio manager of the healthcare-focused hedge fund, Sio Capital Management, LLC, which he founded in 2006. Before starting Sio, Michael worked at Bernstein Investment Research and Management from 2001 to 2006 as the firm’s healthcare analyst and as the healthcare sector leader. Prior to Bernstein, Michael worked in the investment banking/equity capital markets division of JP Morgan where he focused on biotechnology and healthcare equity offerings. Before entering finance, Michael spent three years in clinical medicine. He completed his surgery internship at Indiana University Medical Center followed by two years of surgery and otolaryngology residency at Columbia Presbyterian Medical Center in New York. Michael earned a MD from The Ohio State University College of Medicine, where he graduated summa cum laude. He earned his undergraduate degree in biomedical engineering from Tulane University where he graduated summa cum laude with departmental honors.

Rising inventories – a potential concern?

Various economic data points catch my eye. One of these is the inventory to sales ratio. The current inventory to sales ratio is potentially concerning. As businesses operate, they anticipate future sales and buy inventory accordingly. High inventories are potentially worrisome for…

Earth has a cousin

On Friday July 24, NASA announced the discovery of Kepler 452b, a planet with characteristics similar to earth. Kepler 452b currently takes 385 days (slightly longer than our year) to orbit a sun-like star that is 1.5 billion years older…

Time Goes By So Slowly

Time is slowing down. Seriously. The Earth’s days are getting longer. I learned this when I looked into why post-market stock exchange trading closed five minutes early on Tuesday, June 30. The answer derives from the fact that the Earth’s…

The dangers of hyper-inflation

Zimbabwe is getting rid of their currency and switching to use the US dollar. Residents of Zimbabwe can exchange their currency at a rate of 175 quadrillion Zimbabwe dollars in exchange for $5 US. Just to see it in numbers:…