NEW YORK – Shoppers weren’t the only ones celebrating Amazon’s Prime Day Monday, even though there were some difficulties.

Amazon investors, including CEO Jeff Bezos, should be in a festive mood, too.

Amazon’s stock hit a new all-time high Monday. That means Bezos — the world’s wealthiest person — is now worth more than $150 billion, according to Forbes.

For perspective, Bezos is worth more than Microsoft co-founder Bill Gates and Google co-founder Larry Page combined.

Berkshire Hathaway’s Warren Buffett is the third richest person on the planet behind only Bezos and Gates. But the Oracle of Omaha trails Bezos by nearly $70 billion.

Bezos, who also personally owns The Washington Post and space exploration company Blue Origin, has most of his net worth tied up in Amazon stock. He is the company’s largest shareholder, with a more than 16% stake.

Amazon’s growing clout in retail, cloud computing, media and numerous other areas has put the company closer to surpassing Apple as the world’s most valuable company.

Amazon’s stock is up nearly 60% this year and the company has a market value of more than $890 billion. Apple’s market value is a little more than $935 billion.

Amazon will report its second quarter results on July 26. Analysts are forecasting a more-than-40% jump in sales and a more than sixfold surge in earnings per share.

The company has reliably topped Wall Street’s forecasts and if Amazon delivers another blowout quarter, the company could soon find itself worth more than $1 trillion.

That would put the net worth of Bezos closer to $175 billion.

Rocky start

The news was not as good for Amazon’s self-created Prime Day holiday, which got off to a rocky start.

The retailing giant’s website experienced periodic outages on desktop and mobile on Monday afternoon, right after the Prime Day sale began at 3 p.m. ET. Many shoppers hoping to score deals were instead met with photos of cute dogs, the company’s standard error page.

That put Amazon in the doghouse with upset customers, many of whom have gone on social media to complain.

The issues appeared to affect other Amazon products and services. According to Downdetector.com, a website that tracks outages, Amazon’s Alexa, Prime Video Services, and Amazon Web Services experienced brief outages.

In a statement to CNNMoney, Amazon said, “Some customers are having difficulty shopping, and we’re working to resolve this issue quickly. Many are shopping successfully — in the first hour of Prime Day in the U.S., customers have ordered more items compared to the first hour last year. There are hundreds of thousands of deals to come and more than 34 hours to shop Prime Day.”

Calls to Amazon’s customer service number were answered with an automated message saying, “We’ve heard some customers are having trouble with our website right now. We’re very sorry and we expect to have the website fully functioning again soon.”

Amazon Prime Day is the company’s annual sales bonanza. Lasting for 36 hours this year, it offers discounts on products to Prime Members. It’s predicted to reach $3.4 billion in sales this year, according to retail think tank Coresight Research — that is, if enough people can manage to make their purchases.

In addition to the revenue made on the day itself, it’s a marketing opportunity for Amazon, which is always trying to sign up new Prime Members.

“The worst part about it is it’s just embarrassing. They’re supposed to be the best company in the world from a retail and e-commerce standpoint,” said Sucharita Kodali, an ecommerce analyst at Forrester. “This just shows they’re human.”