UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
Notice of Effectiveness
Effectiveness Date:	June 12, 2018

Accession Number:	0001193125-18-188317
Submission Type:	POS 8C
CIK: 0001190935 Company Name: PIMCO CORPORATE & INCOME OPPORTUNITY FUND File Number: 333-215581