S&P Global Inc. said it would buy technology startup Kensho Technologies Inc. for about $550 million, its second investment in the artificial intelligence sector this year.

The deal is the latest sign of Wall Street embracing AI. Almost one-fifth of banks and financial-services companies surveyed by Greenwich Associates have implemented AI technology into their businesses, according to an October report by the research firm. Banks have tapped machine learning for their research, trading and compliance, the report said.

Kensho, based in Cambridge, Mass., uses AI to provide data analysis for financial institutions.

“Kensho’s capabilities are critical for S&P Global to be at the forefront of the technology transformation taking place within the financial markets,” said S&P Global Chief Financial Officer Ewout Steenbergen.

The company was founded in 2013. Its staff consists of former employees of Google parent Alphabet Inc., Facebook Inc. and Twitter Inc., an S&P Global spokesman said.