Alex Dumortier, CFA

What's ailing "value" stocks, what's the true cost of gold, and is Advance Auto Parts, Inc. getting credit for some hard choices?

Kraft Heinz has a bologna problem, there's a possible merger candidate for Goldman Sachs, and Berkshire Hathaway vice-chairman Charlie Munger warns of a "noxious poison."

Cryptocurrencies certainly aren't money, but they've become pure vehicles for speculation -- which is a loser's game.

More proof that branded consumer staples aren't what they used to be, why the bitcoin rally's last gasp may have been the result of manipulation, and Goldman Sachs warns that a market correction is on the horizon.

Even the optimistic long-term forecast for U.S. stocks is sobering, Citigroup's $18.3 billion quarterly loss isn't a problem, and Bill Ackman tenders for shares of his Pershing Square Holdings.

Branded consumer staples aren't what they used to be, the rise of robot investors, and Berkshire Hathaway takes one step closer to implementing its post-Buffett succession.

Dow 25,000 doesn't matter as much as another milestone. Cryptocurrency mania is rewriting the rich lists. And why willpower isn't the best way to achieve your goals.

This year's Nobel laureate in economics, Richard Thaler, is an expert in how people deviate from rationality in their economic decision-making. Here are nine of his quotes that could make you a better investor.

iRobot Corporation is the leader in a high-growth industry, but there is simple reason preventing me from buying its stock.

The main mortgage rates were roughly unchanged on Wednesday, as the Federal Reserve decided to stand pat on interest rates. Caution may be warranted as the Fed steps onto a different tightrope, courtesy of the new administration.

Exchanged-traded funds (ETFs) represent a legitimate advance in the fund management industry -- one that has been validated by their success. Here are three ETF trends from 2016 that investors can expect will continue shaping the sector through 2017.

In April 2016, Facebook introduced a plan to create a new share class that would amount to a 3-for-1 stock split.

In his 2015 letter, Warren Buffett warned Berkshire Hathaway shareholders that prospects for the reinsurance industry had dimmed. However, as this week's $1.5 billion deal with The Hartford illustrates, five operating principles will enable Berkshire's reinsurance activity to beat competitors and remain comfortably profitable.

Penny stocks are low-priced shares belonging to very small companies, with offering documents that the SEC hasn't vetted. What does 2017 hold for these stocks? Fraud, market manipulation, and ultimately, massive losses.

You'll need to go somewhat off the beaten path, but it is possible -- easy, even -- to lose all your money in the stock market if you know where to look. Here are two ways to do it.

That Tesla shareholders approved the acquisition-bailout of SolarCity proves that investing in the company has become an act of blind faith, not a rational financial decision.

Switch off the self-appointed oracles on CNBC and stop reading forecasts for 2017: You're betting off not caring what happens this year in the market.

Warren Buffett's net worth increased by $11 billion in 2016 -- a performance that surpassed all his billionaire peers. To explain that performance, other numbers illustrate two of Berkshire Hathaway's "Owner-Related Business Principles."

Stock market strategists are forming a tight herd when it comes to forecasting the S&P 500's prospects in 2017, demonstrating the absurdity of this game. Investors should be paying more attention to something that matters: forecasts of mediocre long-term returns.

Berkshire Hathaway Inc. has achieved extraordinary success under Warren Buffett's leadership. Here are three things you probably didn't know about his masterwork.