ISE Plans to List Foreign Currency Options; ISE FX Options(TM) Offer New Investment Strategy

The International Securities Exchange (NYSE: ISE) today
announced its intent to create and list new foreign currency options,
called ISE FX Options(TM). With ISE FX Options, retail and
institutional investors will have a new investment strategy that
allows them to express their views on the strength or weakness of the
U.S. Dollar relative to foreign currencies. Similar to existing equity
and index options products, these securities will trade in U.S.
Dollars and will be readily available through traditional securities
brokerage accounts. ISE expects trading in ISE FX Options to begin in
the first quarter of 2007, pending regulatory approvals.
   David Krell, ISE's President and Chief Executive Officer, said,
"We are pleased to expand the range of asset classes available to
investors at ISE through the introduction of ISE FX Options. This
innovative new offering furthers our goal to create differentiated
products that are tailored to meet marketplace demand and that support
smarter, more efficient trading."
   ISE will initially list the following four currency pairs:
USD/EUR, USD/GBP, USD/JPY, and USD/CAD. All ISE FX Options will have
U.S. Dollar-based underlying values, which will be scaled as needed to
create an underlying value similar to traditional equity or index
options. For example, if the current USD/EUR rate is .7852, the
underlying value for the USD/EUR ISE FX Option would be 78.52. This
format will allow investors to easily adopt the trading strategies
they currently use for equity and index options. All products will be
cash-settled, which eliminates the need for investors to hold the
actual foreign currency.
   ISE has signed an agreement with Reuters, a leader in the foreign
exchange marketplace, to provide the underlying data for ISE FX
Options. Reuters' dealing community is among the largest in the world,
allowing it to provide ISE with comprehensive and accurate data to
support ISE FX Options.
   ISE will offer a new type of market maker membership class for
quoting in ISE FX Options. This membership will provide the
opportunity for both existing ISE members as well as new firms to
electronically trade ISE FX Options in a low-cost environment.
Electronic Access Members (EAMs) will be able to trade this new
innovative product using their current memberships.
   Interactive Brokers, currently a primary market maker on the ISE
options exchange, will become a market maker in the new ISE FX Options
product through its Timber Hill subsidiary. "As usual, ISE continues
to further the advancement of electronic trading and Interactive
Brokers fully supports these efforts. The new cash-settled currency
options are a first for listed electronic trading, and will be
welcomed as a complementary product for those traders who already
trade the cash and futures forex markets electronically," said Steve
Sanders, Managing Director for Business Development at Interactive
Brokers.

   ISE Background

   The International Securities Exchange, LLC (ISE), a wholly-owned
subsidiary of International Securities Exchange Holdings, Inc. (ISE
Holdings), is an innovative securities market, founded on the
principle that technology and competition create better, more
efficient markets for investors. ISE is the largest equity options
exchange and is among the leading options exchanges in the world. ISE
developed a unique market structure for advanced screen-based trading
systems and in May 2000 launched the first fully electronic US options
exchange. The ISE Stock Exchange LLC launched in September 2006 with
strategic partners and offers an innovative MidPoint Match platform,
which will be followed by a fully integrated displayed Best Bid Offer
(BBO) market in the fourth quarter. ISE Holdings is also a majority
owner of Longitude LLC, an innovative platform for events markets
trading. Additionally, ISE offers enhanced market data products for
sophisticated investors.
   ISE continually enhances its trading systems and develops new
products, including index options and market data, to provide
investors with the best marketplace and investment tools to trade
smarter. For more information about ISE, its options products and its
technology, visit www.iseoptions.com and for more information about
the ISE Stock Exchange LLC, visit www.isestock.com.

   About Interactive Brokers

   Interactive Brokers provides professional traders and investors
with direct access to stocks, options, futures, bonds, and forex on
over 60 market centers worldwide from a single IB Universal Account.
With consolidated equity capital that exceeds US $2.5 billion, IB and
its affiliates execute in excess of 500,000 trades/day and trade 22%
of US equity options. In 2006 Barron's awarded Interactive Brokers its
top star ranking overall and for lowest cost broker. For more
information, please see the Interactive Brokers Web site at
www.InteractiveBrokers.com.

   Forward Looking Statements

   Certain matters discussed in this press release are "forward
looking statements" intended to qualify for the safe harbor from
liability established by the Private Securities Litigation Reform Act
of 1995. These statements relate to future events or our future
financial performance, and involve known and unknown risks,
uncertainties and other factors that may cause our actual results,
levels of activity, performance or achievements, to be materially
different from those contemplated by the forward looking statements.
We undertake no ongoing obligation, other than that imposed by law, to
update these statements. Factors that could affect our results, levels
of activity, performance or achievements and cause them to materially
differ from those contained in the forward looking statements can be
found in our filings with the Securities and Exchange Commission,
including our annual report on Form 10-K, current reports on Form 8-K
and quarterly reports on Form 10-Q, as amended.