MacroShares Oil (UCR and DCR) Reaches an Early Termination Trigger

MADISON, N.J.--(Business Wire)--
The NYMEX light sweet crude oil futures contract for June closed
at $114.36 on Wednesday, April 16th at 2:30. This marked the third
consecutive business day that the reference price for MacroShares Oil
Up and Down (UCR and DCR respectively) closed at or above $111. This
triggered an early termination event for the securities.

The last day of trading for UCR and DCR will be June 25, 2008.

On July 3rd, a final distribution payment will be made to the UCR
and DCR shareholders of record as of June 30th based on the underlying
value of the Up and Down MacroShares Trusts. The underlying value of
the trusts will be determined based on the June 25th closing price of
the NYMEX light sweet crude oil futures contract for August.

MacroShares Oil was launched on the American Stock Exchange on
November 30, 2006, as the first product in a family of new, patented
securities. MacroShare Oil's unique paired structure is comprised of
an Up Trust (UCR) and a Down Trust (DCR) that are equally
collateralized. As MacroShares Up increases in value, MacroShares Down
decreases in value by the same dollar amount.

Sam Masucci, CEO of MacroMarkets, which created and manages the
products, commented "UCR and DCR were our first MacroShare products.
Since they launched, we've been educating investors on this unique
structure, and gauging the market's reaction. Currently, the
securities have over $300 Million in assets under management and are
trading over 3 Million shares per day, which clearly demonstrate the
market's acceptance and willingness to trade the product."

Many investors have asked if there will be another MacroShare Oil
product. Sam noted, "We recently filed a prospectus with the SEC to
offer a new MacroShares Oil product based on a benchmark Crude Oil
price of $100. MacroShares $100 Oil, as well as several other new
MacroShares products, are currently under development and are in
direct response to the market's interest in applying our unique
structure to important asset classes."

Macro Securities Depositor, LLC is a Delaware limited liability
company and is acting as the depositor for the MacroShares Oil Up and
Down trusts. A registration statement (including prospectus) has been
filed with the Securities and Exchange Commission (SEC) for the
offering to which this communication relates. Before you invest, you
should read the prospectus in the registration statement and other
documents the issuer has filed with the SEC for more complete
information about the issuer and this offering. You may get these
documents for free by visiting EDGAR on the SEC website at
www.sec.gov. Alternatively, Macro Securities Depositor, LLC, any
underwriter or dealer participating in the offering will arrange to
send you the prospectus if you request by calling toll-free (888)
Macros1 extension 200. You may also request a copy of the prospectus
by accessing the MacroShares website at www.MacroShares.com.

MacroMarkets LLC is the Administrative Agent and its subsidiary,
Macro Financial, LLC, is the marketing agent for the MacroShares
Holding and Tradeable Trusts. Macro Financial is registered with the
SEC as a broker-dealer and is a member of the Financial Industry
Regulatory Authority.

Important Risks

This Information does not represent an offer to sell securities of
the MacroShares Holding and Tradeable Trusts and it is not soliciting
an offer to buy securities of these Trusts. There can be no assurance
that the Trusts will achieve their investment objectives. An
investment in a MacroShare Holding or Tradeable Trust involves
significant risks, including the risk of loss of substantially all of
your investment. There is no guarantee as to the amount of any
quarterly distribution or the amount of the final distribution to
shareholders. You should review the risk factors in the prospectus
prior to investing in a Holding or Tradeable Trust.

The Holding Trusts continuously offer shares through Authorized
Participants. MacroShares Holding Shares may be converted to
MacroShares Tradeable Shares, which can be bought and sold on the
American Stock Exchange. There is no guarantee that a market for any
MacroShares Holding or Tradeable Shares will continue.

Fluctuations in the underlying value of a Tradeable Trust or its
related Holding Trusts and other factors may affect the market price
of your MacroShares investment. An investment in a Tradeable Trust or
its related Holding Trust will not resemble a direct investment in the
asset being tracked. The price of the asset being tracked by a
Tradeable Trust or its related Holding Trust may be volatile. It may
be difficult to predict whether in the long-term the price of the
asset being tracked will reflect a generally upward or downward trend.
There are risks associated with investing in a product linked to a
benchmark. A substitute price may be used as the reference price of
the benchmark asset.

MacroMarkets LLC and their respective affiliates do not provide
tax advice. Investors are urged to consult their tax advisor to fully
understand the tax implications associated with and investment in any
Tradeable Trust (or its related Holding Trust). Investors are hereby
notified that: (A) any discussion of federal tax issues in this press
release is not intended or written to be relied upon, and cannot be
relied upon by investors for the purpose of avoiding penalties that
may be imposed on investors under the Internal Revenue Code; (B) such
discussion is being used in connection with the promotion or marketing
by Macro Securities Depositor, LLC and the Holding and Tradeable
Trusts of the transactions or matters addressed herein; and (C)
investors should seek advice based on their particular circumstances
from an independent tax advisor.

Additional Information about MacroShares Oil can be found at
www.MacroShares.com

Macro Securities Depositor, LLC
For general inquires:
888-Macros1
or
For press inquiries:
Diane Masucci, 973-889-1973 x 103

Copyright Business Wire 2008