Khang & Khang LLP (the "Firm") announces that it is investigating claims against Express Scripts Holding Company ("Express Scripts" or the "Company") (Nasdaq: ESRX) concerning possible violations of federal securities laws. If you purchased shares of Express Scripts and want more information, please contact Joon M. Khang, Esquire, of Khang & Khang LLP, 18101 Von Karman Avenue, 3rd Floor, Irvine, CA 92612, by telephone: (949) 419-3834, or by e-mail at email@example.com. The investigation focuses on whether Express Scripts and certain of its officers and/or directors violated federal securities laws. On April 24, 2017, the Company announced that it is losing its biggest customer, Anthem Inc., who claims that Express Scripts overcharged it by billions of dollars and so will not renew its contract with the Company when it expires in 2019. If you have any questions concerning this notice or your rights, please contact Joon M. Khang, a prominent litigator for almost two decades, by telephone: (949) 419-3834, or by e-mail at firstname.lastname@example.org. This press release may constitute Attorney Advertising in some jurisdictions.