Ownership Submission
FORM 4
Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).
UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934, Section 17(a) of the Public Utility Holding Company Act of 1935 or Section 30(h) of the Investment Company Act of 1940
OMB APPROVAL
OMB Number: 3235-0287
Expires: January 31, 2005
Estimated average burden hours per response... 0.5

(Print or Type Responses)
1. Name and Address of Reporting Person *
MAGELLAN HOLDINGS LP
   2. Issuer Name and Ticker or Trading Symbol
MAGELLAN HEALTH SERVICES INC [MGLN] 		5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
_____ Director _____ 10% Owner
_____ Officer (give title below) __X__ Other (specify below)
Former 10% Owner
(Last)
(First)
(Middle)
C/O ONEX INVESTMENT CORP.,, 712 FIFTH AVENUE		 3. Date of Earliest Transaction (Month/Day/Year)
11/09/2005
(Street)

NEW YORK, NY 10019		 4. If Amendment, Date Original Filed(Month/Day/Year)
 6. Individual or Joint/Group Filing(Check Applicable Line)
___ Form filed by One Reporting Person
_X_ Form filed by More than One Reporting Person
(City)
(State)
(Zip)
Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1.Title of Security
(Instr. 3)		 2. Transaction Date (Month/Day/Year) 2A. Deemed Execution Date, if any (Month/Day/Year) 3. Transaction Code
(Instr. 8)		 4. Securities Acquired (A) or Disposed of (D)
(Instr. 3, 4 and 5)		 5. Amount of Securities Beneficially Owned Following Reported Transaction(s)
(Instr. 3 and 4)		 6. Ownership Form: Direct (D) or Indirect (I)
(Instr. 4)		 7. Nature of Indirect Beneficial Ownership
(Instr. 4)
Code V Amount (A) or (D) Price

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB control number. SEC 1474 (9-02)

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned
(e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security
(Instr. 3)		 2. Conversion or Exercise Price of Derivative Security 3. Transaction Date (Month/Day/Year) 3A. Deemed Execution Date, if any (Month/Day/Year) 4. Transaction Code
(Instr. 8)		 5. Number of Derivative Securities Acquired (A) or Disposed of (D)
(Instr. 3, 4, and 5)		 6. Date Exercisable and Expiration Date
(Month/Day/Year)		 7. Title and Amount of Underlying Securities
(Instr. 3 and 4)		 8. Price of Derivative Security
(Instr. 5)		 9. Number of Derivative Securities Beneficially Owned Following Reported Transaction(s)
(Instr. 4)		 10. Ownership Form of Derivative Security: Direct (D) or Indirect (I)
(Instr. 4)		 11. Nature of Indirect Beneficial Ownership
(Instr. 4)
Code V (A) (D) Date Exercisable Expiration Date Title Amount or Number of Shares
Multiple and Variable Vote Restricted Conv. Common Stock $ 0 (1) 11/09/2005   S     3,762,713 11/09/2005   (2) Ordinary Common Stock 3,762,713 $ 28.18 0 (3) D  
Multiple and Variable Vote Restricted Conv. Common Stock $ 0 (1) 11/09/2005   S     3,762,713 11/09/2005   (2) Ordinary Common Stock 3,762,713 $ 28.18 0 (3) I By Magellan Holdings LP (4)
Multiple and Variable Vote Restricted Conv. Common Stock $ 0 (1) 11/09/2005   S     3,762,713 11/09/2005   (2) Ordinary Common Stock 3,762,713 $ 28.18 0 (3) I By Magellan Holdings LP (5)
Multiple and Variable Vote Restricted Conv. Common Stock $ 0 (1) 11/09/2005   S     3,762,713 11/09/2005   (2) Ordinary Common Stock 3,762,713 $ 28.18 0 (3) I By Magellan Holdings LP (6)

Reporting Owners

Reporting Owner Name / Address Relationships
 Director  10% Owner  Officer  Other
MAGELLAN HOLDINGS LP
C/O ONEX INVESTMENT CORP.,
712 FIFTH AVENUE
NEW YORK, NY 10019		       Former 10% Owner
Onex Partners GP LP
C/O ONEX INVESTMENT CORP.,
712 FIFTH AVENUE
NEW YORK, NY 10019		       Former 10% Owner
ONEX CORP
161 BAY STREET, 49TH FLOOR, P.O. BOX 700
TORONTO, ONTARIO CANADA M5J2S1		       Former 10% Owner
SCHWARTZ GERALD W
C/O ONEX CORPORATION,
161 BAY STREET, 49TH FLOOR, P.O. BOX 700
TORONTO, ONTARIO CANADA M5J2S1		       Former 10% Owner

Signatures

 /s/ Anthony Munk, Vice President of Onex Partners GP Inc., the general partner of Onex Partners GP LP, the general partner of Magellan Holdings LP   11/10/2005
**Signature of Reporting Person Date
 /s/ Robert M. Le Blanc, President of Onex Partners GP Inc., the general partner of Onex Partners GP LP   11/10/2005
**Signature of Reporting Person Date
 /s/ Donald Lewtas, Authorized Signatory   11/10/2005
**Signature of Reporting Person Date
 /s/ Donald Lewtas, Authorized Signatory for Gerald W. Schwartz   11/10/2005
**Signature of Reporting Person Date

Explanation of Responses:

* If the form is filed by more than one reporting person, see Instruction 4(b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations. See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
(1) Convertible on a share-for-share basis.
(2) No expiration.
(3) Pursuant to Item 4(b)(iv) of the Instructions to Form 4, all of the shares benefically owned by Magellan Holdings LP ("Holdings") are reported as benefically owned by each of Onex Corporation ("Onex"), Onex Partners GP LP ("Onex Partners") and Gerald W. Schwartz, notwithstanding the fact that each of Onex, Onex Partners and Mr. Schwartz has a pecuniary interest in less than 100% of the shares beneficially owned by Holdings; by doing so, none of Onex, Onex Partners or Mr. Schwartz concedes that it has a pecuniary interest in 100% of those shares.
(4) Onex Partners is the general partner of Holdings.
(5) Onex is an indirect investor in Holdings and indirectly owns the general partner of Onex Partners, the general partner of Holdings.
(6) Gerald W. Schwartz is the indirect holder of all the issued and outstanding Multiple Voting shares of Onex, which are entitled to elect sixty percent 60% of the members of Onex's Board of Directors and carry such number of votes in the aggregate as represents 60% of the aggregate votes attached to all voting shares of Onex. The indirect interest of Onex is described in footnote 4. Mr. Schwartz disclaims beneficial ownership of the shares reported hereunder.

Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.

Potential persons who are to respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB number.