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Greenberg: What's Wrong With Twitter?

10/25/13 - 08:38 AM EDT

I love Twitter. It's my first read of the morning -- for news from around the world I may have missed overnight. Or for stories I probably would have missed during my quick morning scans of The New York Times and Wall Street Journal. Or from some publication or journal I never touch. (Somebody has often tweeted links to the best stories.). And then, if and only if I have something to say or share, I tweet it out.

The biggest misconception, however, is that you have to tweet at all. And that's what is wrong with Twitter. As the company plans to go public, with an initial valuation expected to be around $11 billion, it may want to heed the results of a recent Reuters poll that showed 36% of 1,067 people who have joined Twitter say they do not use it and 7% have shut their accounts down.


Greenberg: Icahn Couldn't Win Apple Proxy Fight

10/24/13 - 02:03 PM EDT

Apple is simply too iconic -- as opposed to Icahnic -- for any kind of activism, certainly right now.


Greenberg: The Golden Age of Momentum

10/22/13 - 08:42 AM EDT

"The Golden Age of Momentum," was the way one guy on Twitter responded to something I posted about Netflix. And what I posted was something I hadn't ever seen: A CEO and CFO being blunt and candid about the momentum propelling their company's stock


Greenberg: How Social, Cloud ETFs Defied Skeptics

10/21/13 - 10:18 AM EDT

When The Global-X Social Media ETF first rolled out in 2011, I was among the very first to mock it, but the fund proves that there are exceptions to every rule. Beyond the historic top-ticking of sector funds, there was reason to be leery and (for skeptics) even embolden: For more than a year the social media fund looked like a loser.


Greenberg: Hard Reset for Intuitive Surgical

10/18/13 - 10:18 AM EDT

The company's earnings miss follows months of questions about the oversell of its robotic surgery system.


Greenberg: Risk Finally Catches Up With IBM

10/17/13 - 10:48 AM EDT

Once, all investors cared about was that IBM beat earnings. But for the past 5 years, IBM's revenues have barely budged. Now, after quarters of pretending not to notice, investors are paying closer attention.


Greenberg: Don't Confuse Mattresses and Housing

10/17/13 - 09:27 AM EDT

People always want to believe there is a relationship between mattresses and housing. But if there is a relationship, it's merely coincidental and any further extrapolation spotlights a flaw in ETFs.


Greenberg: Dividends at Risk of Being Cut

10/15/13 - 09:59 AM EDT

The risk of dividends, especially those with high yields, is that they can be cut. And sometimes cut more than once. But the risk of cuts should never be minimized, especially of the highest-yielding companies and/or those who use most, if not all, of their cash flow to make the quarterly payment.


Greenberg: Fleckenstein to Restart Short Fund

10/11/13 - 07:00 AM EDT

From the looks of this pro-bulls market, you might think Bill Fleckenstein needs to have his head examined for announcing plans to restart his short-selling fund. As it turns out, he's one of several ex-short-sellers I've talked to in recent weeks who have said they think the time is right to return.


Greenberg: If Jos. A Bank Gets Men's Wearhouse...

10/09/13 - 09:23 AM EDT

The deal looks great for Men's Wearhouse, but Bank may be trying to patch over its holes. When a company's business appears to be falling faster than its larger competitor, it usually screams: Desperation.


Herb Greenberg is the editor of Herb Greenberg's Reality Check, a subscription newsletter designed to help investors better manage risk.

Greenberg has been a financial journalist for more than 30 years, working most recently as a senior stocks commentator on CNBC's business day programming and on He was also co-president of Greenberg Meritz Research & Analytics. He is a former weekend investor columnist for The Wall Street Journal and a former senior columnist for MarketWatch.

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Prior to joining MarketWatch, Greenberg was senior columnist forTheStreet. He previously spent 10 years as the "Business Insider" columnist for the San Francisco Chronicle and nearly seven years asFortune magazine's monthly "Against the Grain" columnist. Before that, he was the New York financial correspondent for the Chicago Tribune and a financial reporter in its Chicago newsroom. Greenberg has held various positions at other media outlets including Crain's Chicago Business and the St. Paul Pioneer Press.

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