Amazon's fourth annual Prime Day kicked off Monday to much fanfare, but it didn't quite go off without a hitch.
Some users [reported](https://twitter.com/CNET/status/1018934859505385472) getting error messages, while others got stuck in a loop that kept redirecting them back to the main sale site.
The issues came in the opening minutes of what the e-commerce giant has touted as a shopping holiday bigger than Black Friday or Cyber Monday. Research firm eMarketer estimated the company could bring in revenues of as much as $3.4 billion during the event, eclipsing the estimated $2.4 billion spent last year.
Whether the glitches affect results will be closely watched by analysts and investors ー shares of Amazon, which hit all-time highs early in the day Monday, pared gains after news of the problems.
Prime Day began at 3 pm ET on Monday and lasts 36 hours. This year's event is six hours longer than last year's.
As the first half of the year comes to a close, a mixed market kicks off with the Nasdaq on pace for its best quarter in nearly four decades while the stock market looks to get its first positive session in seven tries as upbeat economic data comes in.
U.S. states could face some hurdles as they experiment with road usage charging programs aimed at one day replacing motor fuel taxes, which are generating less each year, in part due to fuel efficiency and the rise of electric cars.
