Money Minute: Big Investors' Bold Moves; More Cable Industry Mergers?

A look at what some of Wall Street's biggest and most successful investors are doing now.

A lot of investors like to follow the lead of the big boys -- the world's best-known investors. Well, many of them filed reports with the government late Friday about stocks they added or cut from their portfolios during the fourth quarter.

Carl Icahn bought more Apple (AAPL), but he sold Netflix (NFLX). Daniel Loeb, Leon Cooperman and others bought more shares of General Motors (GM).

Warren Buffett's Berkshire Hathaway (BRK-A) (BRK-B) added to its positions in General Electric (GE) and USG (USG), while unloading positions in GlaxoSmithKline (GSK) and Dish Network (DISH). %VIRTUAL-article-sponsoredlinks%George Soros, meanwhile, bought banking giants JPMorgan Chase (JPM) and Citigroup (C), but he also increased his bet that the overall market would retreat.

Here on Wall Street, the Dow Jones industrial average (^DJI) and the Standard & Poor's 500 index (^GPSC) both gained 2.3 percent last week, and the Nasdaq composite (^IXIC) rallied nearly 3 percent. The Nasdaq starts the week at its highest level since July 2000.

One of the big stories last week was Comcast's (CMCSA) (CMCSK) $45 billion buyout of Time Warner Cable. Now, analysts say the pressure is on smaller rivals to find new dance partners. They say Charter Communications (CHTR), Cox Communications and Cablevision Systems (CVC) will be on the lookout to get bigger in order to stay competitive, and all of that consolidation may not be good for consumers.

Electric and hybrid cars are slowly making a dent in the market, but one thing holding many buyers back is the hassle of plugging them in every day. Well, Toyota (TM) is testing out a wireless charging system. The idea is to park your car on top of magnetic coils to get a cordless charge. The hope is that this could lead to the development of a universal charging system, that works for all electric cars, regardless of the make or model.

Finally, Sony (SNE) has sold 5.3 million units of its Playstation 4 video game console since it launched on Black Friday last year. That tops its target for the full year.

-Produced by Drew Trachtenberg.