A key strategy in JPMorgan Asset and Wealth Management’s Quantitative Beta Strategies (QBS) team lies in event-driven investing, specifically in systematically investing in M&A deals, alongside equity long/short strategies. But the team struggled with sifting the wheat from the chaff in the vast volume of information that it consumed every day. Thus, NewsFilter was born. Introduced five years ago, the tool was simple in design and relied on keyword searches to identify merger announcements or deal failures. It has since evolved, backed by the power of machine learning and natural-language processing.
“The latest instantiation took approximately three months to develop and was built through strong partnership across the investment team and the technology team, with two members of the investment team with PhDs in artificial intelligence, and three technologists—two focused on the server side, and one focused on the graphical user interface front-end—focused on the project,” says Kent Zheng, head of global research technology for EMEA at JPMorgan Asset Management. The tool sifts through hundreds of news sources received through providers including Bloomberg and FactSet, along with wider unstructured data each day, using a recurrent neural network that is continuously trained by manually labelled data to pick up patterns that distinguish M&A-related news articles from others. “The NewsFilter picks up words from unstructured news articles in free text format and filters out uninformative components, forming a domain-specific vocabulary and transforming the input into a structured form. We use a distributed representation to translate the words in the text to predictive features. This allows semantically similar words to cluster in a high-dimensional space. In addition, we initialize our deep-learning process with pre-trained vector embeddings to leverage the rich semantic domain knowledge captured by large studies carried out on billions of news items and Wikipedia articles,” says Zheng.
The tool is useful in removing potential sources of “idiosyncratic risk,” says Yazann Romahi, chief investment officer of QBS at the firm. This is useful in the rumor-mired world of M&A. Romahi estimates that the machine-learning enhancements have improved performance in long/short by up to 0.5 percent per year, by filtering out and avoiding up to eight potential shorts per year. NewsFilter is under continuous development. Along with the ongoing training of the neural network, it also takes into account “user feedback to dynamically improve its predictions,” Zheng says. “This is a fast-moving field, and we regularly carry out model comparisons to incorporate the newest methodologies into our solution. On top of relevance, we are also expanding the classification framework to be able to distinguish between actionable news items versus rumors. We are also looking to develop a novelty factor component that can verify whether a news article contains new deal information that was not captured by articles that preceded it,” he says.
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