New York, April 4, 2007— The American Stock Exchange® (Amex®) will launch trading in options on Thursday, April 5, 2006 on the following Nasdaq Stock Market and New York Stock Exchange listed stocks of:

• Equinix, Inc. (Option Symbol: FQS/Stock Symbol: EQIX)
• Gmarket, Inc. (Option Symbol: QMF/Stock Symbol: GMKT)
• Hercules Offshore, Inc. (Option Symbol: HIQ/Stock Symbol: HERO)
• Visicu, Inc.  (Option Symbol: QJU/Stock Symbol: EICU)
• Technical Olympic USA, Inc. (Symbol: TOA)

Equinix, Inc. options will open with position limits of 7,500,000 shares.  The options will trade on the March expiration cycle. The specialist will be AGS Specialist, LLC.  Equinix, Inc. provides core Internet exchange services to networks, Internet infrastructure companies, enterprises and content providers.

Gmarket, Inc. options will open with position limits of 7,500,000 shares.  The options will trade on the March expiration cycle. The specialist will be Trinity Derivatives Group, LLC.  Gmarket, Inc. operates a retail e-commerce marketplace.

Hercules Offshore, Inc. options will open with position limits of 7,500,000 shares.  The options will trade on the January expiration cycle. The specialist will be Group One Trading, LP.  Hercules Offshore, Inc. offers shallow water drilling and liftboat services.

Visicu, Inc. options will open with position limits of 5,000,000 shares.  The options will trade on the March expiration cycle. The specialist will be Group One Trading, LP. Visicu, Inc. provides healthcare information technology and clinical solutions.

Technical Olympic USA, Inc. options will open with position limits of 25,000,000 shares.  The options will trade on the March expiration cycle. The specialist will be Group One Trading, LP.  Technical Olympic USA, Inc. designs, builds and markets single-family residences, town-homes, patio homes and condominiums.