ticker mapping

About this tag
The tag 'ticker mapping' on WindowsForum.com covers discussions around data-feed errors and technical glitches in financial trading systems, particularly involving American Depositary Receipts (ADRs). A prominent thread examines the Infosys ADR phantom rally on December 19, 2025, where a ticker mapping or data-feed error is cited as a potential cause for a sudden 50-56% intraday spike. The content explores how such errors interact with market microstructure, algorithmic trading, and volatility controls like Limit Up-Limit Down pauses. While the tag is specific to financial market incidents, it touches on broader themes of data integrity and system reliability relevant to IT professionals and traders.
  1. Infosys ADR Phantom Rally Explained: Ticker Mapping and Market Microstructure

    The sudden, intraday surge in Infosys Ltd.’s American Depositary Receipts (ADRs) on December 19, 2025 — a spike that briefly vaulted the stock as much as 50–56% before multiple Limit Up–Limit Down (LULD) volatility pauses clipped the move — appears to have been driven not by corporate...