Rates of adverse events (AEs) gave pause to some on Wall Street, and shares of Viking Therapeutics Inc. (NASDAQ:VKTX) fell 42%, or $17.73, to close Aug. 19 at $24.36 after the firm reported 13-week data from the phase II trial with the oral tablet form of VK-2735, the company's dual agonist of the glucagon-like peptide 1 (GLP-1) and glucose-dependent insulinotropic polypeptide (GIP) receptors.