Check out which companies are making headlines after the bell Wednesday:

Nokia - The Wall Street Journal reported that Microsoft held talks with the Finnish cellphone maker this month about buying the phone company's devices business, citing sources familiar with the matter. Nokia shares soared in extended-hours trading, while MIcrosoft slipped.

(Read More: Dow Skids 200, Stocks End Down 1% After Fed)

Separately, Microsoft confirmed that its Xbox One videogame console will not require Internet connection to play games and players can play any disc-based game after a one-time system set-up without ever connecting online again. In addition, the company said there will be no limitations to using and sharing games. Videogame software retailer Gamestop spiked higher in extended-hours trading following the announcement.

Take a look at some of Wednesday's midday movers:

bluebird bio – The biotech IPO surged more than 50 percent above its $17 offering price. The company works on gene therapy for "sever genetic and orphan diseases."

Men's Warehouse – Founder and Executive Chairman George Zimmer was terminated by the company's board of directors. Men's Warehouse was scheduled to hold its shareholder meeting Wednesday, but the event has been delayed so the company can put together a new slate of directors. Men's Warehouse has not commented on the reason for its move, while Zimmer said in a statement that "the Board has inappropriately chosen to silence my concerns (about the direction of the company) through termination as an executive officer."

Whatever Federal Reserve Chairman Ben Bernanke says Wednesday afternoon threatens to rock some part of the financial markets.

"That's how I see it. Tomorrow is dangerous," said Art Cashin, director of NYSE floor operations at UBS.

Financial markets always watch the Fed, and they always hang on every word of Fed policy. But the Fed's post-meeting statement or comments from the Fed chairman Wednesday will either give credence to or conflict with a recent fundamental shift in market perception – and that is that there will be a slow creep to higher rates as the Fed slows and then ultimately ends its bond purchase program.

Check out which companies are making headlines after the bell Tuesday:

Adobe Systems - The computer software company posted earnings of 36 cents a share, topping expectations for 33 cents a share, while revenue was in line with consensus at $1.01 billion. For the current quarter, Adobe expects earnings of 29 cents to 35 cents a share vs. expectations of 35 cents a share. Shares rallied in extended-hours trading.

(Read More: Stocks Rally, Russell Ends at All-Time High)

La-Z-Boy - The furniture manufacturer posted earnings of 30 cents a share on sales of $360 million, edging past estimates for 28 cents a share on sales of $358 million. Shares climbed in extended-hours trading.

Anxiety is mounting over Fed Chairman Ben Bernanke's presser tomorrow. Perhaps inadvertently, President Obama has added fuel to the fire by telling Charlie Rose in a PBS interview that Bernanke has "already stayed a lot longer than he wanted or he was supposed to."

Immediately, traders began speculating that Mr. Bernanke might announce he was leaving tomorrow.

Last week D.A. Davidson Analyst Tim Ramey, who calls Herbalife his "single best idea," issued a report saying that "the bear case is in tatters."

With Herbalife's stock price up nearly 40 percent since mid-April and almost double from its lows of December, he was suggesting the bears are wrong in their claim that Herbalife operates a pyramid scheme. (Never mind that it is still well below its 2012 highs.)

Check out which companies are making headlines before the bell on Tuesday:

Smithfield Foods — The pork producer will study the letter sent by major shareholder Starboard Value earlier in the day. That letter proposed a breakup of the company, saying it yielded far more value than the $34 per share buyout deal struck with China's Shuanghui Holdings.

Sony — Hedge fund operator Third Point raised its stake to 7 percent from about 6.3 percent. Third Point also asked for the chance to present its case for a spin-off of Sony's entertainment unit to the board of directors.

Boeing — Boeing formally launched a new version of its Dreamliner, the 787-10, and announced commitments for 102 of the jets from five customers including United Airlines.

There's a wide divide on Wall Street over whether further bond purchases by the Federal Reserve can help lower interest rates, which have been rising since early May.

Economists, analysts and fund managers, who participated in the latest CNBC Fed survey, were almost evenly split on the question. Of the 60 respondents, 45.8 percent said further bond purchases could help lower yields, while 44 percent said they do not believe it would. Another 10.2 percent said they were unsure. More results of the survey will be reported Tuesday by CNBC Senior Economic Correspondent Steve Liesman, starting at 7 a.m. ET on CNBC's "Squawk Box."

The answer to the question on yields suggests that Wall Street is losing faith in the ability of the Fed's quantitative easing program to suppress rates. In April, 54 percent who answered the CNBC Fed survey said they thought QE could lower bond yields, while 35 percent did not.

(Read More: Stocks End Higher, but Fed Taper Talk Weighs; Dow Rallies 100)

Check out which companies are making headlines after the bell Monday:

Korn/Ferry International - The executive search firm posted earnings of 32 cents a share, excluding one-time items, edging past expectations by a penny a share. Revenue of $239 million topped estimates for $224 million. In addition, the company said it expects to see current-quarter earnings above Wall Street forecasts. Shares rallied in extended-hours trading.

(Read More: Stocks End Higher, but Fed Taper Talk Weighs)

Host Hotels & Resorts - The lodging real estate investment trust boosted its quarterly dividend by 10 percent to 11 cents a share. Shares were largely unchanged in extended-hours trading.

Take a look at some of Monday's midday movers:

Embraer United Technologies – Embraer received a big order for the newest version of its E-Jet planes. Skywest will be the launch customer with a firm order of 100 planes and options for another 100. Embraer has also received letters of intent to buy 265 E-Jets from others. United Technologies' Pratt & Whitney unit will provide the engines for the planes.

Medivation, Johnson & Johnson – Medivation fell sharply after Johnson & Johnson announced a deal to buy privately-held Aragon Pharmaceutical. The deal strengthens J&J's position in the prostate cancer space and puts pressure on Medivation's prostate cancer drug Xtandi.