This point in the PR is one we should all clearly understand, due to the high Short Sale volume and its induced volatility on MCLN:
However, because short sellers may profit on the decline in a company’s stock price, they may seek ways to drive downward the stock prices in the companies in which they invest. And while most short selling is legal, some is not. As the GAO report notes: “short selling also may be used to illegally manipulate the prices of securities. Generally speaking, it is prohibited for any person to engage in a series of transactions to create actual or apparent active trading in a security or to depress the price of a security for the purpose of inducing the purchase or sale of the security by others.”
I am currently doing an analysis of the published bi-monthly FTD reports by SEC against the daily short volume.