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Proc-Type: 2001,MIC-CLEAR
Originator-Name: webmaster@www.sec.gov
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<SEC-DOCUMENT>0000806260-10-000011.txt : 20100211
<SEC-HEADER>0000806260-10-000011.hdr.sgml : 20100211
<ACCEPTANCE-DATETIME>20100211105433
ACCESSION NUMBER:		0000806260-10-000011
CONFORMED SUBMISSION TYPE:	SC 13G/A
PUBLIC DOCUMENT COUNT:		1
FILED AS OF DATE:		20100211
DATE AS OF CHANGE:		20100211

SUBJECT COMPANY:	

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			ATLAS ENERGY, INC.
		CENTRAL INDEX KEY:			0001279228
		STANDARD INDUSTRIAL CLASSIFICATION:	NATURAL GAS TRANSMISSION [4922]
		IRS NUMBER:				510404430
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		SC 13G/A
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	005-80454
		FILM NUMBER:		10590099

	BUSINESS ADDRESS:	
		STREET 1:		WESTPOINTE CORPORATE CENTER ONE
		STREET 2:		1550 CORAOPOLIS HEIGHTS RD. 2ND. FLOOR
		CITY:			MOONTOWNSHIP
		STATE:			PA
		ZIP:			15108
		BUSINESS PHONE:		412-262-2830

	MAIL ADDRESS:	
		STREET 1:		WESTPOINTE CORPORATE CENTER ONE
		STREET 2:		1550 CORAOPOLIS HEIGHTS RD. 2ND. FLOOR
		CITY:			MOONTOWNSHIP
		STATE:			PA
		ZIP:			15108

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	ATLAS AMERICA INC
		DATE OF NAME CHANGE:	20040209

FILED BY:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			MUNDER CAPITAL MANAGEMENT
		CENTRAL INDEX KEY:			0000806260
		IRS NUMBER:				383212521
		STATE OF INCORPORATION:			MI
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		SC 13G/A

	BUSINESS ADDRESS:	
		STREET 1:		480 PIERCE ST
		CITY:			BIRMINGHAM
		STATE:			MI
		ZIP:			48009
		BUSINESS PHONE:		2486479200

	MAIL ADDRESS:	
		STREET 1:		480 PIERCE STREET
		CITY:			BIRMINGHAM
		STATE:			MI
		ZIP:			48009
</SEC-HEADER>
<DOCUMENT>
<TYPE>SC 13G/A
<SEQUENCE>1
<FILENAME>atlasenergyinc-a.txt
<DESCRIPTION>ATLAS AMERICA 13GA MUNDER FILING
<TEXT>
<PAGE>
                     SECURITIES AND EXCHANGE COMMISSION
			    WASHINGTON, DC 20549

				SCHEDULE 13G
				(RULE 13d-102)

	   INFORMATION TO BE INCLUDED IN STATEMENTS FILED PURSUANT
		TO RULES 13d-1(b), (c), AND (d) AND AMENDMENTS THERETO FILED
			PURSUANT TO RULE 13d-2
			 (Amendment No. __1__)*

			     Atlas Energy, Inc.
                              (Name of Issuer)

				Common Stock
- --------------------------------------------------------------------------------
                       (Title of Class of Securities)

				49167109
- --------------------------------------------------------------------------------
                              (CUSIP Number)

				12/31/2009
- --------------------------------------------------------------------------------
            (Date of Event Which Requires Filing of this Statement)

	Check the appropriate box to designate the rule pursuant to which this
Schedule is filed:

            [X]    Rule 13d-1(b)

            [ ]    Rule 13d-1(c)

            [ ]    Rule 13d-1(d)

      *The remainder of this cover page shall be filled out for a reporting
person's initial filing on this form with respect to the subject class of
securities, and for any subsequent amendment containing information which would
alter the disclosures provided in a prior cover page.

      The information required in the remainder of this cover page shall not be
deemed to be "filed" for the purpose of Section 18 of the Securities Exchange
Act of 1934 ("Act")or otherwise subject to the liabilities of that section of
the Act, but shall be subject to all other provisions of the Act (however, see
the Notes).

<PAGE>


CUSIP No. 49167109                 	13G       	    Page  2   OF  5  Pages


- --------------------------------------------------------------------------------
1. 	NAMES OF REPORTING PERSONS

	Munder Capital Management
- -------------------------------------------------------------------------------
2.	CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP     	(a) [ ]
     	(see instructions)                                 	(b) [ ]
- --------------------------------------------------------------------------------
3.    SEC USE ONLY

- --------------------------------------------------------------------------------
4.    CITIZENSHIP OR PLACE OF ORGANIZATION

	State of Delaware
- --------------------------------------------------------------------------------
                  	5.       SOLE VOTING POWER

      NUMBER OF                     	2,893,214
        SHARES          -----------------------------------------------------
    BENEFICIALLY     	6.       SHARED VOTING POWER
	OWNED BY
  	EACH				0
     REPORTING          -----------------------------------------------------
    PERSON WITH         7.       SOLE DISPOSITIVE POWER

					2,893,214
                  	-----------------------------------------------------
           		8.       SHARED DISPOSITIVE POWER

                            		0
- --------------------------------------------------------------------------------
9.     AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

	2,893,214
- --------------------------------------------------------------------------------
 10.     CHECK IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN
        	SHARES (SEE INSTRUCTIONS)                                 [ ]

- --------------------------------------------------------------------------------
 11.     PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9)

	3.7%
- --------------------------------------------------------------------------------
 12.     TYPE OF REPORTING PERSON (SEE INSTRUCTIONS)

	IA
- --------------------------------------------------------------------------------

<PAGE>


CUSIP No. 49167109                  	13G       	    Page  3   OF  5  Pages


Item 1.

	(a)	Name of Issuer:

		Atlas Energy, Inc.

	(b)	Address of Issuer's Principal Executive Offices:

		1550 Coraopolis Heights Road
		Moon Township, PA 15108

Item 2.

	(a)	Name of Person Filing:

		Munder Capital Management ("Munder")

	(b)	Address of Principal Business Office:

		Munder Capital Center
		480 Pierce Street
		Birmingham, MI  48009

	(c)	Citizenship:

		Munder is a general partnership formed under the laws of the
		State of Delaware

	(d)	Title of Class of Securities:

		Common Stock

	(e)	CUSIP Number:

		49167109


Item 3.		If this statement is filed pursuant to 240.13d-1(b) or
		240.13d-2(b) or (c), check whether the person filing is a:

	(e)	[X]	An investment adviser in accordance with 240.13d-1
			(b)(1)(ii)(E);

Item 4.	Ownership

	(a)	Amount Beneficially Owned:

		2,893,214 shares (the "Common Stock")

	(b)	Percent of Class

		3.7%


CUSIP No. 49167109                  	13G       	    Page  4   OF  5  Pages


	(c)	Number of shares as to which such person has:

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

			2,893,214

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

			0

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

			2,893,214

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

			0

Item 5.		Ownership of Five Percent or Less of a Class

		If this statement is being filed to report the fact that as of
		the date hereof the reporting person has ceased to be the beneficial
		owner of more than five percent of the class of securities, check
		the following  [X].

Item 6.		Ownership of More than Five Percent on Behalf of Another Person

		Not Applicable.

Item 7.		Identification and Classification of the Subsidiary Which Acquired
		the Security Being Reported on by the Parent Holding Company

		Not Applicable.

Item 8.		Identification and Classification of Members of the Group

		Not Applicable.

Item 9.		Notice of Dissolution of Group

		Not Applicable.

<PAGE>

CUSIP No. 49167109                  	13G       	    Page  5   OF  5  Pages


Item 10.		Certification

		By signing below I certify that, to the best of my knowledge
		and belief, the securities referred to above were acquired and
		are held in the ordinary course of business and were not
		acquired and are not held for the purpose of or with the effect
		of changing or influencing the control of the issuer of the
		securities and were not acquired and are not held in connection
		with or as a participant in any transaction having that purpose
		or effect.


	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.

					February 8, 2010

					MUNDER CAPITAL MANAGEMENT,
					a Delaware general partnership


					By:	/s/ Mary Ann C. Shumaker
					Its:	Associate General Counsel


</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
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