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Published: Wed, July 05, 2017
Economy | By Melissa Porter

Amazon, Apple sees shares drop after NASDAQ tech glitch

Amazon, Apple sees shares drop after NASDAQ tech glitch

US stock markets were open for half a day on Monday and are closed Tuesday for Independence Day.

Depending on which tech stocks you own, you're not as rich or not as poor as you might think. Imagine your shock when you checked your portfolio just a few hours later to find out that the same Amazon share was now listed at $123.47.

Apple shares were similarly skewed, with both Google and Yahoo Finance saying they were down 14%, also to $123.47.

Share traders around the world got a shock today after seeing dramatically changed prices for well-known companies after third-party providers improperly propagated test data sent out by the Nasdaq exchange.

Meanwhile, the same test data showed eBay Inc., Mattel Inc. and Microsoft Corp. shares soaring 253 percent, 473 percent and 79 percent, respectively.

Page views to MarketWatch's stock pages - which remained accurate - soared as investors double-checked exactly what was going on yesterday evening. The company blamed third-party data providers. Nasdaq is working with UTP and third parties to resolve the matter.

The Nasdaq figures were, we're told, not reflected in actual trading, only in the publicly listed prices, so no one lost any money.

Bloomberg and Yahoo Finance appeared as if the two were showing correct ticker data by 11 p.m. on Monday, but Google Finance still had the test data showing. "This is now being fixed and we hope to update our stock price data shortly".

Bloomberg, Yahoo and Google did not immediately respond to CNBC's request for comment.

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