MACROSHARES OIL DOWN TRADEABLE (DOY)

[Soapy Bubbles]

<font color=red>*** UPDATE

MacroShares Oil Declares Final Proceed Amounts

MADISON, N.J., Jun 30, 2008 (PrimeNewswire via COMTEX) -- MacroMarkets LLC today
announced the final proceeds payable as a result of the liquidation of
MacroShares Oil Up and Down.

MacroShares Oil's last day of trading on the American Stock Exchange was June 25,
2008, and all proceeds will be paid out on July 3, 2008 to shareholders of record
as of June 30, 2008. The table below summarizes the breakdown of the proceeds at
liquidation for MacroShares Oil Up (UCR) and MacroShares Oil Down (DCR).


------ ----------- ------- ------- ---------- --------------------
Symbol/Fund RecordPayable FinalFinalMiscellaneous
Symbol NameDateDateUnderlying Liquid-Income
Valueation
Payment
------ ----------- ------- ------- ---------- --------------------
UCRMacroShares 6/30/08 7/3/08$40.000343 $40$0.000343
Oil Up
------ ----------- ------- ------- ---------- --------------------
DCRMacroShares 6/30/08 7/3/08$0$0$0
Oil Down
------ ----------- ------- ------- ---------- --------------------



The end of trading marks the culmination of the MacroShares Oil lifecycle; UCR
and DCR were launched on November 30, 2006 and concluded in a predetermined
termination trigger, which was hit as oil approached record highs.

MacroShares Oil was designed to transfer assets between the Up and Down trusts as
their NYMEX light sweet crude oil benchmark price moves. When launched, this
benchmark oil price was $60. Since the securities transfer assets on a
dollar-for-dollar basis, the Up Trust cannot deliver performance of the benchmark
oil price beyond $120 (Up Trust's underlying value hits a ceiling once the Down
Trust's underlying value is $0.00). With this in mind, MacroShares Oil originally
built an early termination event into the security structure once oil prices
approached $120. The early termination event occurred on April 16, 2008, when the
benchmark oil price closed at or above $111 for the third consecutive business
day.

The next MacroShares Oil products, MacroShares $100 Oil Up (AMEX:UOY) and Down
(AMEX:DOY) are scheduled to begin trading on the American Stock Exchange on July
1, 2008. The structure will be similar to that of the first MacroShares Oil (UCR
and DCR) and will allow investors to benefit from either the upward or downward
price movement of its benchmark NYMEX light sweet crude oil futures contact.
MacroShares $100 Oil will be based on a reference price of $100 for the
benchmarked NYMEX light sweet crude oil futures contract and will cover a range
of prices between $0 and $200, with a termination trigger occurring when the
benchmarked NYMEX light sweet crude oil price closes at or above $185 for three
consecutive business days.

For additional information, shareholders in these securities may call
MacroMarkets at 888-Macros1 x 200 or 973-889-1973 x200.

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 http://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 or 973-889-1973. You may also request a
copy of the prospectus by accessing the MacroShares website at
http://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
http://www.MacroShares.com.

This news release was distributed by PrimeNewswire, http://www.primenewswire.com

SOURCE: MacroShares Oil
MacroMarkets LLC
Richard Dukas
[e-mail]
Kristina Ferrari
[e-mail]
212/704-7385
Diane Masucci
973-889-1973x103
[e-mail]


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