Google's end-of-day prices are provided by Swiss-based SIX Financial Information while the intra-day prices are provided by New York-based Interactive Data Real-Time Services, Inc.
USA markets had closed early on Monday ahead of the Fourth of July holiday.
For Amazon, that would have meant a $398 billion drop in market capitalization.
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As of 11 p.m. ET, Google Finance said Amazon.com shares were down more than 87%, to $123.47.
Apple and Amazon stock did not crash nor did Mattel stock soar on Monday.
"As part of its normal process, the UTP distributed test data and certain third parties improperly propagated the data". On the other hand, Microsoft's close at $123.47 appears to show that the company's stock was up 79%. "Nasdaq is working third party vendors to resolve the matter". The biggest consequences appear to be a bit of confusion among traders and a fun day for companies like Sears and Zynga, who saw their stock prices suddenly jump by a few thousand percent. Joe Christinat, a Nasdaq spokesman, said no actual trades were affected by the glitch. The test data originated from Nasdaq's Unlisted Trading Privileges (UTP) service.
The NASDAQ's own website did not display any irregularities, and a system status message showed that the system was operating normally.