MFS Blended Research International Equity Fund Class I (BRXIX) is an open-end mutual fund that seeks capital appreciation by investing primarily in equity securities of issuers located outside the United States, with at least 80% of net assets allocated to such foreign stocks including those in developed and emerging markets; it employs a proprietary Blended Research approach integrating fundamental and quantitative analysis to select high-quality companies trading at favorable valuations with identifiable catalysts for long-term growth. The fund maintains a diversified portfolio typically comprising 150-156 holdings across sectors such as financials, information technology, industrials, and consumer discretionary, with top holdings including Taiwan Semiconductor Manufacturing Co Ltd ADR, Tencent Holdings Ltd, Roche Holding AG, and Barclays PLC; geographic exposure emphasizes Europe ex-U.K. (around 30%), emerging markets (around 27-29%), Japan (13-14%), the United Kingdom (10%), and North America (8-9%), benchmarked against the MSCI All Country World ex-US Index with a targeted tracking error of approximately 2%. Launched on September 15, 2015, BRXIX forms part of the offerings from MFS Investment Management, a Boston, Massachusetts-headquartered firm founded in 1924 that manages approximately $659 billion in assets globally through offices in key financial centers including London, Tokyo, Sydney, Hong Kong, Singapore, and Toronto. In recent developments, MFS extended its Blended Research strategy beyond mutual funds by launching the MFS Blended Research International Equity ETF (NYSE: BRIE) in October 2025, alongside a U.S. core equity counterpart, to provide ETF access to the same disciplined bottom-up stock selection process; the firm also announced portfolio manager transitions and fee adjustments for certain Blended Research funds in late 2025, alongside ongoing net asset growth to over $2.2 billion across share classes as of November 2025.