Alex Dumortier, CFA

Warren Buffett added to Berkshire Hathaway's huge investment in Phillips 66 last week. Investors now have the opportunity to pick up shares at prices below Berkshire's cost basis.

Saudi Aramco, the world's largest energy company, has announced that is is considering a stock market listing, with at least one estimate putting its value at $10 trillion.

Fitbit Inc is focused on a niche market and is dedicated to serving that market better than anyone else. The health-tracking device maker can co-exist profitably with Apple Inc.

Myopic concerns regarding quarterly iPhone sales continues to create an opportunity for long-term investors to pick up shares of Apple.

If Twitter CEO Jack Dorsey goes ahead with removing the 140-character cap on tweets, he will be doing enormous damage to Twitter's value.

In naming CEO Mary Barra to chair its board, General Motors is thumbing its nose at good corporate governance practices.

But for the dividend return, U.S. stocks were roughly flat on the year, but that still puts them ahead of other asset classes and other world markets.

Chinese stocks have their worst day in nine years, bringing markets down worldwide.

Jamie Dimon was named CEO at JPMorgan Chase 10 years ago to the day. What's his scorecard?

This year marks another five-year period in which Berkshire Hathaway has under-performed the S&P 500.

In 2015, Freeport-McMoRan, Kinder Morgan Inc. and HP Inc. proved that a high dividend yield is no panacea.

CEO J. Michael Pearson can't solve Valeant Pharmaceuticals International's fundamental problem: The company's growth strategy is broken.

Amazon.com's early reports suggest a strong holiday shopping period. Amazon Prime is one of the keys to that momentum.

In a move that will make waves in boardrooms across the U.S., Apple gives shareholders improved access to its board of directors.

A long history of consecutive annual dividend increases did not prevent Dividend Aristocrats Wal-Mart Stores, Archer Daniels Midland, and Franklin Resources from delivering awful returns in 2015.

Next year, as every year before it, will be an awful year for penny stock "investors".

New York University finance professor Aswath Damodaran identifies three misconceptions about growth when it comes to technology companies.

An E. coli outbreak has brought shares of Chipotle Mexican Grill, Inc. back to reasonably attractive levels.

At nearly 82 months, the present stock market rally is set to become the second longest in the modern era. Is this bull market geriatric?

The Seattle Times reports that Amazon.com is negotiating to lease 20 Boeing jets in the latest clue that the e-commerce giant could take on United Parcel Service and FedEx.