I wrote about the phenomenon of tech stock doppelgängers showering riches on people who can act quickly, but mostly parting fools from their money.

Zoom Technologies is carrying on a long American tradition: making people rich by accident.

Not to be confused with Zoom Video Communications, a unicorn that went public in April, making its backers truly wealthy, the similarly named penny stock appears to have benefited from mistaken identity. A $1,000 investment in late March would have been worth over half a million dollars by mid-April. Even now, assuming one were able to find a buyer, it would be worth $175,000.

Zoom joins the likes of doppelgangers Tweeter and Snap Interactive. Similarly confusing episodes happened in the last tech bull market. For example, penny stock Appian Technology surged by nearly 19,000% because it shared a ticker with a hot initial public offering on Nasdaq, AppNet, in 1999.

Of course all of these scenarios enriched people already owning the shares of the “wrong” company, and only if they acted quickly. Buyers fooled by similar names or tickers usually regret it. Not always, though. Mistaken buyers of food company Sysco back in March 2000—when red-hot Cisco Systems briefly the world’s most valuable company—have made 571% since then compared with a loss of 12% by owning the “correct” stock.