Confusion over stock names of Zoom, NIO, and SIGL show how Wall Street’s lax naming rules breed doppelganger stocks
- While Zoom Video Communications’ popularity boosted its share price fourfold last year, it inadvertently lifted another Chinese company, Zoom Technologies
- Zoom Technologies, a maker of mobile phone components, was asked by US regulators to change its ticker sign from ZOOM to ZTNO to avoid confusion among investors

Of the many bizarre happenings in stock trading, one that stands out is the classic tale of mistaken identity on Wall Street. Similar ticker symbols have occasionally sent the wrong stock flying, but last year’s rip-roaring market increased the frequency and Nasdaq is keen for investors to not mess up.
The Silicon Valley start-up trades under the ticker symbol ZM, while the latter previously went by ZOOM, causing confusion among some investors.
Between two companies with similar names or tickers, trades made by mistake could account for 5 per cent of trading turnover for the smaller firm, according to a study by New Jersey-based Rutgers University in 2019. Such investor confusion could cost an average of US$1.1 million a year in transaction costs.

And despite the confusion on doppelganger stock mix-ups, bourse operators maintain a more hands-off approach with ticker confusion.