Amid easy money, IPOs scamper from out of the woodwork

Empire State Building
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It's shaping up to be a busy week for initial public offerings (IPOs): at the NASDAQ alone, for example, there are seven.

This morning FireEye (FEYE) which provides protection for corporations against cyber attacks, priced 15.2 million shares, more than the 14 million expected, at $20 each--above the $15 to $17 price range.

Rocket Fuel (FUEL), which places digital advertising for clients, priced four million shares at $29 apiece, the high end of the $27 to $29 price talk.

ClubCorp (MYCC) is set to debut on the NYSE this morning after pricing 18 million shares at $14 each, below the $16 to $18 range. The company owns and operates private golf and country clubs, as well as business, sports, and alumni clubs in North America.

Know your IPO

Lots of well-known names have recently announced IPO plans, including the owners of the Empire State Building. Empire State Realty Trust plans to launch an initial public offering of 71.5 million shares between $13 and $15 per share, according to a regulatory filing on Thursday. The offering is expected to price Oct. 1.

(Read more: Why Twitter is moving ahead with its IPO now)

Hilton Worldwide said last week it intends to raise $1.25 billion from an IPO. The hotel operator didn't disclose how many shares it planned to price nor the anticipated price range.

Univision, a U.S. Spanish broadcaster, has held discussions with banks in recent weeks regarding an IPO, according to reports. Univision was taken private in 2007 by firms including Madison Dearborn Partners, Providence Equity Partners, TPG Capital, and Thomas H. Lee Partners.

1) The Quadruple witching (the quarterly expiration of individual stock and index futures as well as options, is today. But more important is the quarterly re-weighting in the S&P 500 Index that will take place at the close. Companies that have announced substantial additions or reductions in their stock float through buybacks or secondaries, for example, get re-weighted in the S&P. Investment companies that are indexed to the S&P 500 must buy or sell stock, depending on the changed weightings.

According to S&P, Apple is the biggie - it will reduce its share count by 3.2 percent, when it did its index record breaking buybacks of $16 billion. Google is the big gainer, with an increase of 4.1 percent. General Motors was also notable, and even Berkshire.

2) Also, there will be a change to the main gold mining index, the NYSE Arca Gold Miners Index (GDM), which will be expanded to include more names. This is the index that is used by the main gold mining ETF, the (GDX).

3) Four Federal Reserve speakers are on tap for Friday: Esther George, Daniel Tarullo, James Bullard, and non-voting member Narayana Kocherlakota. Bullard, speaking on Bloomberg, said the Fed could taper in October and that Bernanke has broached the possibility of holding a press briefing after that meeting.

(Read more: Do markets really just want Bernanke to stay?)

Confused yet?

By CNBC's Bob Pisani