April 19 (Reuters) - Alliance Data Systems Corp:
* Q1 REVENUE $1.88 BILLION VERSUS I/B/E/S VIEW $1.94 BILLION
* Q1 EARNINGS PER SHARE VIEW $4.23 — THOMSON REUTERS I/B/E/S
* REITERATING 2018 GUIDANCE Source text for Eikon: Further company coverage: (Reuters.Briefs@thomsonreuters.com)