Stocks fell again on Monday, following four straight weeks of declines, as investors grew concerned that the soaring energy prices driven by Russia's war with Ukraine could potentially lead to even higher inflation and greater global economic damage. The Dow Jones Industrial Average has fallen over 800 points, while the S&P 500 Index and Nasdaq Composite dropped 2.9% and 3.6%, respectively.

Here's how the market settled to start the week:

S&P 500 Index (SPY  ): -2.96% or -127.98 points to 4,200.89

Dow Jones Industrial Average (DIA  ): -2.38% or -801.24 points to 32,813.56

Nasdaq Composite Index (QQQ  ): -3.62% or -482.48 points to 12,830.96

Amazon acquires Veeqo, a start-up that helps sellers manage their online businesses:

Amazon (AMZN  ) has acquired Veeqo, a company that makes tools to help online businesses sell products on and off the e-commerce giant's platform. Amazon quietly bought the company back in November, while Veeqo announced the deal in a blog post and investor Octopus Ventures confirmed the deal on Monday, CNBC reports.

"We're excited Veeqo has joined Amazon," a spokesperson told CNBC. "We plan to continue investing in new features and improvements to elp Veeqo serve sellers globally from its home in Wales, facilitate growth for sellers' multi-channel businesses, and enhance the experience of their customers."

Bed Bath & Beyond shares jump after GameStop chair reveals large stake:

Bed Bath & Beyond (BBBY  ) shares jumped over 30% on Monday after GameStop (GME  ) Chair Ryan Cohen revealed a 9.8% stake in the company through his investment company RC Ventures.

Cohen, who co-founded online pet retailer Chewy (CHWY  ), also wrote a letter to Bed Bath & Beyond's board, calling for a sweeping set of operational changes and for the board to consider alternatives, which include separating Buy Buy Baby and full sale of the company. He also criticized top executives for taking high compensation packages amid the company's underperformance.

In response to the letter, which the company said it had received on Sunday, Bed Bath & Beyond said it has had no prior contact with RC Ventures. "We will carefully review their letter and hope to engage constructively around the ideas they have put forth," the company said in a statement.

Here's how market benchmarks started trading soon after open:

S&P 500 Index (SPY  ): -0.17% or -7.19 points to 4,321.68

Dow Jones Industrial Average (DIA  ): -0.33% or -111.09 points to 33,503.71

Nasdaq Composite Index (QQQ  ): +0.14% or +14.94 points to 13,332.30