Eight initial public offerings are scheduled to price and begin trading the week of Sept. 21 in what is likely to become the busiest week for U.S. IPOs since December 2007.

The IPOs, from a broad array of companies, are expected to raise $3.5 billion in proceeds. Please see

Below is a list of the IPOs on deck in order of expected pricing date. All are expected to begin trading the day after they price. Dates and deal terms could change before an IPO prices.

SEPTEMBER 22:

COLONY FINANCIAL INC:

Estimated proceeds: $500 million - 25 mln shares, $20 each

Lead managers: Bank of America Merrill Lynch, Goldman Sachs, Morgan

Stanley and UBS Investment Bank

Ticker/Exchange: CLNY on the New York Stock Exchange

Company: newly organized real estate finance company that will acquire,

originate and manage a portfolio of real estate-related debt instruments

APOLLO COMMERCIAL REAL ESTATE FINANCE:

Estimated proceeds: $400 million - 20 mln shares, $20 each

Lead managers: JP Morgan, Citi, Barclays Capital

Ticker/Exchange: ARI on NYSE

Company: the private-equity backed REIT will originate, invest in, acquire

and manage senior performing commercial real estate mortgage loans and

commercial mortgage-backed securities.

VITACOST.COM INC: VITC.O

Estimated proceeds: $132 mln - 11 mln shares, $11-$13

Lead managers: Jefferies & Co and Oppenheimer & Co

Ticker/Exchange: VITC on Nasdaq

Company: online retailer and direct marketer of dietary supplements

SEPTEMBER 23:

ARTIO GLOBAL INVESTORS INC:

Estimated proceeds: $585 mln - 23.4 mln shares, $24-$26

Lead manager: Goldman Sachs

Ticker/Exchange: ART on NYSE

Company: U.S. asset management arm of Swiss Bank Julius Baer

A123 SYSTEMS INC:

Estimated proceeds: $225 million - 25.7 mln shares, $8-$9.50

Lead managers: Morgan Stanley, Goldman Sachs

Ticker/Exchange: AONE on Nasdaq

Company: Designs, develops, manufactures and sells advanced, rechargeable

lithium-ion batteries and battery systems used by carmakers.

SEPTEMBER 24

SHANDA GAMES LTD:

Estimated proceeds: $725 mln - 63 mln ADRs, $10.50-$12.50

Lead managers: Goldman Sachs (Asia), JP Morgan

Ticker/Exchange: GAME on Nasdaq

Company: Gaming unit of Chinese media co Shanda Interactive

FOURSQUARE CAPITAL CORP:

Estimated proceeds:$500 mln - 25 mln shares, $20

Lead managers: Bank of America Merrill Lynch, Morgan Stanley

Ticker/Exchange: FSQR on NYSE

Company: A REIT created by asset manager AllianceBernstein in part

to buy toxic assets under U.S. Treasury program

SELECT MEDICAL HOLDINGS CORP: SEM.N

Estimated proceeds: $400 mln - 33.3 mln shares, $11-$13

Lead managers: Goldman Sachs, Morgan Stanley, Bank of America Merrill

Lynch, JP Morgan.

Ticker/Exchange: SEM on NYSE

Company: operator of specialty hospitals, outpatient rehabilitation

clinics. Source: U.S. Securities and Exchange Commission filings, underwriters (Writing by Phil Wahba)