Published: Dec. 19, 2025 at 1:12 p.m. ET
It was a stock-market mystery.
On an otherwise quiet Friday at the end of the final full week of trading in the U.S. for 2025, U.S.-traded American depositary receipts of Infosys INFY, a $78 billion Indian information-technology company, spiked as much as 56% on extreme volume that forced multiple trading halts.
