Welcome to Seeking Alpha's Wall Street Breakfast, where we cover the top news for investors every morning.

Good morning. Today is Monday, March 17th. I'm Julie Morgan. Buffett is boosting his bets. Forever 21 is doing something it's done before, and Joby teams up with Virgin Atlantic.

Warren Buffett's Berkshire Hathaway has raised its holdings in five Japanese trading houses.

Regulatory filings show Berkshire's stake in Mitsui and Co rose to 9.82% from 8.09%

while its holdings in Mitsubishi, Sumitomo, Itochu, and Marubini also rose by some

percentage points. Reuters reported this information, citing documents filed to Japan's

securities watchdog by National Indemnity Company. The filing showed Buffett's annual letter to Berkshire shareholders last month, where he said

the five trading houses agreed to moderately relax, limits that cap Berkshire's ownership

stakes below 10%.

Forever 21 filed for Chapter 11 bankruptcy on Sunday for the second time in six years amid week sales

and increasing competition from online retailers. Court documents showed that the company

filed for Chapter 11 bankruptcy in Delaware. In its petition, it listed assets of $100 million

to $500 million and liabilities of $1 billion to $10 billion.

The brand has 540 locations globally, according to its website.

A group of buyers, including Simon Property Group, Brookfield, and authentic brands

teamed up to buy Forever 21 out of bankruptcy through a venture called Spark Group.

Spark announced this year it was combining with JCPenney to form Catalyst's brands.

At the time of the merger, Catalyst said it was exploring strategic options for the operations of Forever 21.

Joby Aviation has partnered with Virgin Atlantic for the launch of Joby's Air Taxi

Service in the UK.

The companies made the announcement on Saturday.

The partnership builds on an existing agreement between Joby and Delta Airlines, which

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