Index Securities registered pursuant to Section 12(b) of the Act: UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q (Mark One) Quarterly Report Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 For the quarterly period ended April 30, 2019 Transition Report Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Commission File Number: 0-7928 (Exact name of registrant as specified in its charter) (State or other jurisdiction of incorporatio ...