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State Street has expanded its partnership with Thornburg Investment Management to provide servicing for new ETF share classes, marking the second active ETF share-class mandate in the U.S. The collaboration, dating back to 1987, now includes end-to-end support for Thornburg’s active ETF offerings. This move underscores growing demand for specialized ETF structures and highlights State Street’s role as a key infrastructure provider in the asset management industry. For traders, this partnership could influence ETF liquidity and investor access to active strategies, particularly in markets where Thornburg’s products are listed. The development may also signal broader industry trends toward diversifying ETF share classes to meet institutional and retail investor needs.