This is where you say one should go to confirm volumes of short trading in a stock:
"In the United States, the Financial Industry Regulatory Authority, Inc. (FINRA) is a private corporation that acts as a self-regulatory organization (SRO). FINRA is the successor to the National Association of Securities Dealers, Inc. (NASD) and the member regulation, enforcement and arbitration operations of the New York Stock Exchange. It is a self-regulatory organization, a non-governmental organization that performs financial regulation of member brokerage firms and exchange markets. The government agency which acts as the ultimate regulator of the securities industry, including FINRA, is the Securities and Exchange Commission.