New Delhi, Dec 20 || A suspected data‑feed anomaly and algorithm‑driven buying — rather than company‑specific news -- seems to have triggered the sudden surge of around 50 per cent in Infosys Ltd’s American Depository Receipts (ADRs), a report has said.
The report from The Chronicle Journal said the spike in Infosys ADRs on December 19, 2025, was likely caused by a ticker‑mapping error across multiple financial data platforms that confused automated trading systems and set off a self‑reinforcing buying loop in a thinly traded counter.
The sharp move prompted multiple Limit Up–Limit Down volatility halts on the New York Stock Exchange, the report said.
Several data providers had erroneously mapped the “INFY” ticker to an unrelated entity while continuing to attach it with Infosys‑specific metrics and headlines.
This mismatch led algorithmic models to interpret as a pricing anomaly and triggered aggressive buy orders, and the impact was magnified by low liquidity and thin trading volumes.