ASPM Aspect Medical Systems (MM)

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CUSIP NO. 045235108 13D PAGE 2 OF 8
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 1 NAMES OF REPORTING PERSONS.
 I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY).

 CCM Master Qualified Fund, Ltd.* 98-0363044
 Coghill Capital Management, LLC.+* 36-4313801
 Clint D. Coghill+*
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 2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (SEE INSTRUCTIONS)
 (a)[ ]
 (b)[x]
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 3 SEC USE ONLY

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 4 SOURCE OF FUNDS (SEE INSTRUCTIONS)
 WC

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 5 CHECK IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO
 ITEMS 2(d) or 2(e) [ ]

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 6 CITIZENSHIP OR PLACE OF ORGANIZATION

 CCM Master Qualified Fund, Ltd.* - Cayman Islands
 Coghill Capital Management, LLC.+* - Delaware, USA
 Clint D. Coghill+* - USA

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 7 SOLE VOTING POWER
 0

 NUMBER OF ------ -------------------------------------------
 SHARES 8 SHARED VOTING POWER
 BENEFICIALLY 2,798,515
 OWNED BY
 EACH ------ -------------------------------------------
 REPORTING 9 SOLE DISPOSITIVE POWER
 PERSON 0
 WITH
 ------ -------------------------------------------
 10 SHARED DISPOSITIVE POWER
 2,798,515

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 11 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

 2,798,515
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 12 CHECK IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES
 (SEE INSTRUCTIONS) [ ]

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 13 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
 16.2%
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 14 TYPE OF REPORTING PERSON (SEE INSTRUCTIONS)

 CCM Master Qualified Fund, Ltd.* - CO
 Coghill Capital Management, LLC.+* - IA
 Clint D. Coghill+* - IN

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CUSIP NO. 045235108 13D PAGE 3 OF 8
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 Schedule 13D

Item 1. Security and Issuer.
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 This statement relates to the Common Stock, of Aspect Medical
Systems, Inc. (the "Issuer"). The address of the Issuer's principal offices is:

141 Needham Street
Newton, MA 02464-1505
United States

Item 2. Identity and Background.
 -----------------------

 (a) The name of the reporting persons are: CCM Master
Qualified Fund, Ltd*, Coghill Capital Management, LLC+*, and
Clint D. Coghill+*.

 (b) The address of principal business office is:
1 N. Wacker Dr. Ste. #4350
Chicago, IL 60606

 (c) Coghill Capital Management LLC+*, is an investment advisor.

 (d) During the five years prior to the date hereof, CCM
Master Qualified Fund, Ltd*, Coghill Capital Management, LLC+*, and
or Clint D. Coghill+* have not been convicted in a criminal proceeding
 (excluding traffic violations or similar misdemeanors).

 (e) During the five years prior to the date hereof, CCM
Master Qualified Fund, Ltd*, Coghill Capital Management, LLC+*, and
or Clint D. Coghill+* have not been a party to a civil proceeding
ending in a judgment, decree or final order enjoining future violations
of, or prohibiting or mandating activities subject to, federal
or state securities laws or finding a violation with respect to such
laws.

 (f) Coghill Capital Management, LLC is incorporated in Delaware, USA.

Item 3. Source and Amount of Funds or Other Consideration.
 -------------------------------------------------

 Working Capital of CCM Master Qualified Fund, Ltd.*

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CUSIP NO. 045235108 13D PAGE 4 OF 8
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Item 4. Purpose of Transaction.
 ----------------------

The Reporting Persons plan to engage in discussions with management and
representatives of the board of directors of the Issuer concerning its
capital and cost structure, its direction and leadership, and various
strategic alternatives including potential extraordinary transactions that
could result in a change of control of the Issuer. The Reporting Persons
intend to continue to closely evaluate the performance of the Issuer,
including, but not limited to, its share price, business, assets, operations,
financial condition, capital structure, management and prospects.
Depending upon the outcome of their discussions with the Issuer, the Reporting
Persons reserve the right to formulate a plan or proposal with respect to the
Issuer, including a plan or proposal that could result in any of the actions
enumerated in clauses (a) through (j) of Item 4 of Schedule 13D. Further
the Reporting Persons reserve the right revise their plans or intentions
and to take any and all actions that they may deem appropriate to maximize
the value of their investment in the Issuer in light of their general
investment policies, market conditions, and subsequent developments affecting
the Issuer. The Reporting Persons have not at this time elected to pursue
any particular course of action. The Reporting Persons have no plans or
proposals as of the date of this filing which, other than as expressly set
forth above, relate to, or would result in, any of the actions enumerated
in clauses (a) through (j) of Item 4 of Schedule 13D.



(1) acquire additional securities of the Issuer, or dispose of securities of
the Issuer which the Reporting Persons hold,

(2) seek to cause the Issuer to enter into an extraordinary corporate
transaction, such as a merger, reorganization or liquidation, involving the
Issuer or any of its subsidiaries,

(3) seek to cause the sale or transfer of a material amount of assets of the
Issuer or any of its subsidiaries,

(4) seek changes in the present board of directors or management of the Issuer,
including proposals to change the number or term of directors,

(5) seek material changes in the present capitalization or dividend policy of
the Issuer,

(6) seek other material changes in the Issuer's business or corporate
structure,

(7) seek changes in the Issuer's Articles of Incorporation and By-laws or take
other actions which may impede the acquisition of control of the Issuer by any
person,

(8) seek to cause a class of securities of the Issuer to be delisted from a
national securities exchange or to cease to be authorized to be quoted in an
inter-dealer quotation system of a registered national securities association,

(9) seek to cause a class of equity securities of the Issuer becoming eligible
for termination of registration pursuant to Section 12(g)(4) of the Securities
Exchange Act of 1934 (the "Act") or

(10) take any action similar to any of those enumerated above, or any other
action the Reporting Persons may determine to be in their interest.

Although the Reporting Persons intends to have discussions with
representatives of the Issuer regarding its business prospects and strategy and
various strategic alternatives, the Reporting Persons have no definitive plans
or proposals related to the items described in (1) through (10) above, and have
not elected to pursue any particular course of action.




Item 5. Interest in Securities of the Issuer.
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(a) CCM Master Qualified Fund, Ltd*, Coghill Capital Management,
LLC+*, and Clint D. Coghill+* have beneficial ownership of 2,798,515
shares (16.2%).

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CUSIP NO. 045235108 13D PAGE 5 OF 8
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 (b) Number of Shares as to which CCM Master Qualified
Fund, Ltd*, Coghill Capital Management, LLC+*, and Clint D.
Coghill+* have:

 (i) sole power to vote or to direct the vote:

 0 shares of Common Stock.

 (ii) shared power to vote or to direct the vote:

 2,798,515 shares of Common Stock (16.2%).

 (iii) sole power to dispose or to direct the disposition:

 0 shares of Common Stock.

 (iv) shared power to dispose or to direct the disposition:

 2,798,515 shares of Common Stock (16.2%).

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CUSIP NO. 045235108 13D PAGE 6 OF 8
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 (c) Transaction occurring during the past sixty days: N/A

 (d) N/A

 (e) N/A

Item 6. Contracts, Arrangements, Undertakings or Relationships with Respect
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 to Securities of the Issuer.
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In addition to the Shares beneficially held by the Reporting Persons,
between August 22, 2006 and August 31, 2007, the CCM Master Qualified Fund,
Ltd. (the "Master Fund") entered into certain total return equity swap
agreements (the "Swaps") with securities brokers relating to
488,478 shares in the aggregate (the "Reference Shares"). Under the
terms of these Swaps (i) the Master Fund will be obligated to pay to
the broker any capital depreciation of the Reference Shares as of
maturity, plus interest, and (ii) the broker will be obligated to pay
to the Master Fund any capital appreciation of the Reference Shares as
of maturity. Any dividends received by the broker on the Reference
Shares during the term of the Swaps will be paid to the Master Fund.
All balances will be cash settled at maturity and there will be no
transfer of voting or dispositive power over the Reference Shares.


Item 7. Material to be Filed as Exhibits.
 --------------------------------

Explanation of Responses:
* The reporting persons disclaim beneficial ownership of the securities
except to the extent of their pecuniary interest therein.

+ Principal of the investment manager or investment manager to the
investment management entity in whose account the reported securities
are held

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CUSIP NO. 045235108 13D PAGE 7 OF 8
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 SIGNATURE

 After reasonable inquiry and to the best of my knowledge and belief, I
certify that the information set forth in this statement is true, complete and
correct.

Date: March 11, 2009


/S/ Clint D. Coghill+*
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Clint D. Coghill+*

/S/ Coghill Capital Management, LLC+*
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Coghill Capital Management, LLC+*

/S/ CCM Qualified Master Fund, Ltd.*
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CCM Qualified Master Fund, Ltd.*

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CUSIP NO. 045235108 13D PAGE 8 OF 8
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Exhibit A

JOINT FILING AGREEMENT

In accordance with Rule 13d-1(k)(1) under the Securities Exchange Act of 1934,
as amended, each of the the undersigned agrees that this Schedule 13D dated
March 11, 2009 and relating to the Common Stock, par value $0.01 of ASPECT
MEDICAL SYSTEMS, INC. (ASPM) shall be filed on behalf of the undersigned.

_____/s/ Clint D. Coghill+*_____ _________ March 11, 2009__________
 Clint D. Coghill+* Date
Signature of Reporting Person

Coghill Capital Management, L.L.C.+*
__By:/s/ Clint D. Coghill+*_____ _________ March 11, 2009__________
 Clint D. Coghill+* Date
 Managing Member

CCM Master Qualified Fund, Ltd.*
__By:/s/ Clint D. Coghill_______ _________ March 11, 2009__________
 Clint D. Coghill Date
 Director