An investment in a Texas oil and gas company went sour for Mayo Clinic, which saw its stake in Black Stone Minerals lose $45 million in the first quarter alone.
The Post-Bulletin reports on the stock loss in Houston-based Black Stone, which fell from a value of $72.4 million on Dec. 24 to just $26.7 million on March 30.
Shares of Black Stone (NYSE: BSM) dropped from $12.72 at the start of the year to $4.19 at the end of March — one of many energy stocks to plummet in March as the Covid-19 pandemic…
