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General Insight
AI and Analyst Sentiment
October 20, 2026
This paper discusses how the quantitative equity research team recently researched and implemented an enhancement to the research analyst sentiment score utilized within the MFS Blended Research portfolios. The new natural language processing (NLP) algorithm is materially better at contextualizing text within a document and as a result quantifying its sentiment. By leveraging sophisticated tools such as FinBERT to analyze MFS’ proprietary datasets we believe we can offer a differentiated alpha signal.