NYSE Amex Options trading Floor
The NYSE Amex options trading floor was opened in March of 2009 and offers both electronic and open outcry equity options trading. The new floor brings together options traders from the American Stock Exchange (Amex), which was acquired by NYSE Euronext, and the NYSE onto one trading floor and platform.

Nicholas-Applegate Capital Management
Nicholas-Applegate is an investment management firm based in San Diego, California.

Lightspeed Trading
Lightspeed Trading is a direct-access brokerage firm that focuses on the professional retail trader and small to midsize hedge funds, providing them with institutional-quality trading tools. The firm's New York headquarters include a trading floor built for 35 to 40 traders and also house the majority of Lightspeed's executive, IT and customer support staff.

JonesTrading
JonesTrading is an agency-only broker-dealer specializing in large block trades for its buy side customers. The firm's Westlake Village trading floor is home to 36 sales traders and 8 agency traders.

Russell Investments
Russell Investments is a global provider of investment products and services, as well as a pioneer in multimanager investing and the creator of the Russell Indexes.

Rosenblatt Securities
Rosenblatt Securities is a New York-based agency brokerage that was founded by Richard (Dick) Rosenblatt in 1979 as an NYSE floor brokerage. As trading has become more electronic, Rosenblatt has evolved into a boutique that helps its buy-side clients achieve best execution while navigating the new market structure.

The Philadelphia Stock Exchange
The Philadelphia Stock Exchange, created in 1790, was the first U.S. stock exchange. And in 1975, the exchange became the first regional exchange to trade equity options. The PHLX began as a floor-based exchange, trading via an auction market. It has evolved into a hybrid market with the AUTOM--Automated Options Market systemwhich was introduced in 1988. AUTOM, which is still used today, was created to allow electronic delivery of option orders from member firms to the exchange floor, automatic execution of certain orders, and electronic confirmation of orders.

Weeden & Co.
The trading floor at Weeden & Co.'s Greenwich, Conn., headquarters is designed to foster teamwork, cooperation and communication among the full-service institutional broker's 75-plus traders, sales traders and assistants on the floor, and about 25 other traders in its regional branches in Boston, San Francisco and Chicago. The floor services Weeden's 1,500 institutional clients with NYSE/Regional, Nasdaq/OTC and program trading.

BGC Partners
BGC Partners, a fixed-income, inter-dealer broker, spent the end of the year gearing up for two important technology upgrades. The first is an internal firm-wide roll out of BGC Trader, a trading graphical user interface developed for BGC by eSpeed. The firm, which has traditionally been a voice broker, plans to offer a hybrid model where traders can call orders into a broker or type in orders through a trading graphical user interface it calls BGC Trader.

UBS Trading Floor
With 1,400 seats, 2,000 computers and 5,000 monitors, the UBS trading floor is noted by the Guinness Book of World Records as the largest single trading floor in the world. The floor is home to traders, sales traders, quants, technology support, executives and others among its various groups, which include fixed income, commodities, currencies, money markets, derivatives, equities, international trading, algorithmic trading, direct market access, program trading and more.

ING Investment Management
ING Investment Management's equities trading operation has gone through a transformation over the past two years since Nanette Buziak, head equity trader, took the helm. When Buziak joined ING, she was charged with consolidating the firm's two trading floors — one in Hartford, Conn., and the other in New York.

Knight Capital Group
Knight's trading floor, built two years ago, currently accommodates 321 traders. Most of the technology used is proprietary, such as its order management system, which is a core technology for Knight's institutional business. In the photos that follow you can see how the floor is structured and who sit where, as well as some close-ups of the technology used on specific desks. Later on in the photo gallery we also take a peek at Knight's data center and describe its functions.