The Facebook founder bought 60 million shares of his company for just 6 cents during the IPO. The IRS treats that as income, even if he hasn't sold those shares.
Bloomberg pegs the deal at close to $1 billion, while the AllThingsD site estimates it as $200 million at most.
The number of choices available to investors is in a long-term decline. Companies are getting bought out or delisted, and the IPO market remains shaky.
The good news for Apple and Samsung isn't so bullish for HP or Dell.
An industry insider warns that the much-hyped effort to digitize medical records is being compromised by theft of personal data, putting patients -- and investors -- at risk.
After being sheltered for so many years, the online retailer ironically may be backing a change for buyers.
Model N debuted on the market Wednesday and saw shares jump 44%.
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Shares of Twitter surged 73 percent jumping from an IPO price of $26. In the month since the stock price has gained five cents.
The Market Dispatches column has been discontinued. Here's where to find the latest stock and business news on MSN Money, and the latest from market writer Charley Blaine.
MONEY & POLITICS
Breaking up big banks is an untested solution to the too big to fail problem that attempts to isolate and dismantle large, troubled institutions while protecting the rest of the economy.
Even those who don't like to shop are probably hitting the stores this month. Here's what to be on the lookout for and here's what to avoid.
The IRS is struggling to combat identify thieves who file fraudulent tax returns in the names of older residents who don't need to file.