GAIN Capital's FOREX.com Releases Enhanced Android App

BEDMINSTER, New Jersey, June 6, 2011 -

GAIN Capital Holdings, Inc. (NYSE: GCAP), a global provider of online
trading services, announced today the launch of an enhanced Android mobile
trading app for its retail division, FOREX.com.

The new version of the app is now available in three languages: English,
Russian and Japanese, and features enhanced charting tools, expanded research
content and a new "Learn" section.

"FOREX.com's mobile trading volume increased 418 percent in Q1 2011
compared to the same period last year," said Samantha Roady, chief marketing
officer at GAIN Capital. "We expect the high growth rate to continue,
especially now that we have a native app for the fastest growing mobile
operating system in the world."

According to research firm Gartner, Android devices were the top selling
smartphones worldwide in Q1 2011, accounting for 36% of sales, versus 9% from
a year ago.

    FOREXTrader for Android features:

    - Real-time currency rates and charts for over 50 currency pairs,
      contracts for difference (CFDs), commodities and major equity indices*;
    - Multiple order types, including market, limit, stop, One Cancels Others
      (OCO), If Then, If Then / OCO and Trailing Stop;
    - High-resolution tick charts including candlestick, bar and line.
      Portrait or full-screen landscape displays with seven time intervals
      and "touch-and-hold" for precise time indicator. Trade directly from
      the chart;
    - Market research and commentary and an advanced economic calendar;
    - Real-time newsfeed from Dow Jones;
    - "Learn" section, including video tutorials, reference materials and
      more;

To download the free application, Android users may visit the Android
Marketplace directly from their devices and search for "FOREXTrader."

FOREX.com customers can use their existing user ID and password to access
their trading accounts via the app. Prospective customers can access all the
features of the Android app by registering for a free 30-day practice account
in-app.

The release of FOREXTrader for Android rounds out FOREX.com's suite of
mobile trading solutions, which includes a native app for iOS users on
iPhones and iPods, a mobile version of FOREX.com with full trading
capabilities optimized for smartphones such as Blackberry, Palm Pre, and
other Windows Mobile devices, and a WAP-enabled solution for older mobile
devices.

* Foreign exchange and other leveraged trading involves significant risk
of loss and is not suitable for all investors. Contracts for Difference
(CFDs) are not available to US residents.

About GAIN Capital

GAIN Capital Holdings, Inc. (NYSE:GCAP) is a global provider of online
trading services. GAIN's innovative trading technology provides market access
and highly automated trade execution services across multiple asset classes,
including foreign exchange (forex or FX), contracts for difference (CFDs) and
exchange-based products, to a diverse client base of retail and institutional
investors.

A pioneer in online forex trading, GAIN Capital operates FOREX.com(R),
one of the largest and best-known brands in the retail forex industry. GAIN's
other businesses include GAIN GTX, a fully independent FX ECN for hedge funds
and institutions, and GAIN Securities, Inc. (member FINRA/SIPC) a licensed
U.S. broker-dealer.

GAIN Capital and its affiliates have offices in New York City;
Bedminster, New Jersey; London; Sydney; Hong Kong; Tokyo; Singapore; and
Seoul.

For company information, visit www.gaincapital.com.

GAIN PUBLIC RELATIONS - In EMEA: Sorrel Beynon, +44-(0)20-3047-2368 or Laura Crooks, +44-(0)-20-3047-2366, both of Edelman, gain at edelman.com; or In North America: Christa Conte, +1-212-808-4902 or Savannah Tikotsky, +1-212-808-4903, both of Feintuch Communications, gain at feintuchpr.com; or GAIN INVESTOR RELATIONS - Henry Lyons of GAIN Capital, hlyons at gaincapital.com, +1-908-212-3980