IQ Clean Oceans ETF (OCEN) is an exchange-traded fund that seeks to track the IQ Candriam Clean Oceans Index, providing investors exposure to global companies contributing to cleaner oceans through reduced pollution and increased resource efficiency; the index focuses on firms involved in pollution reduction, carbon efficiency, clean energy, sustainable oceans, and cleaner shipping. The ETF holds approximately 80 stocks, with top sectors including utilities (29.79%), producer manufacturing (24.2%), and electronic technology (19.97%); key holdings as of late 2023 feature Advanced Micro Devices, NXP Semiconductors, Intel, ABB Ltd, and Siemens AG, weighted by market capitalization with a focus on large-cap companies averaging $131.71 billion in market cap. Geographically, it operates with primary exposure to the United States (42.67%), Germany (11.99%), and France (11.44%), alongside allocations to Europe (48.82%), North America (41.06%), and Asia Pacific (10.03%); launched on October 21, 2021, and listed on NYSE Arca, the fund is managed by IndexIQ Advisors LLC, an affiliate of New York Life Investment Management LLC headquartered in New York, with total net assets around $5 million and an expense ratio of 0.45% after waivers. Recent major developments include New York Life Investments' announcement in February 2025 to liquidate OCEN alongside the NYLI Cleaner Transport ETF (CLNR), with trading ceasing after market close on April 9, 2025, and proceeds distributed to shareholders on or about April 16, 2025; this operational wind-down reflects a strategic contraction of the firm's thematic ESG ETF lineup amid low assets under management.