SEC Form 4

FORM 4		UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934 or Section 30(h) of the Investment Company Act of 1940	OMB APPROVAL OMB Number: 3235-0287 Estimated average burden hours per response: 0.5
	Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

1. Name and Address of Reporting Person* TUDOR INVESTMENT CORP ET AL (Last) (First) (Middle) ATTN: STEPHEN N. WALDMAN 1275 KING STREET (Street) GREENWICH CT 06831-2936 (City) (State) (Zip)	2. Issuer Name and Ticker or Trading Symbol RCN CORP /DE/ [ RCNIV ]	5. Relationship of Reporting Person(s) to Issuer (Check all applicable) Director X 10% Owner Officer (give title below) Other (specify below)
	3. Date of Earliest Transaction (Month/Day/Year) 10/11/2006
	4. If Amendment, Date of 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

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
Common Stock, par value $0.01 per share	10/11/2006(1)(2)		A		125,307(2)	A	$0(2)	7,173,512	I(3)(4)	See Footnotes(3)(4)

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 Securities Underlying Derivative Security (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: 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

1. Name and Address of Reporting Person* TUDOR INVESTMENT CORP ET AL (Last) (First) (Middle) ATTN: STEPHEN N. WALDMAN 1275 KING STREET (Street) GREENWICH CT 06831-2936 (City) (State) (Zip) Relationship of Reporting Person(s) to Issuer Director X 10% Owner Officer (give title below) Other (specify below)

1. Name and Address of Reporting Person* JONES PAUL TUDOR II (Last) (First) (Middle) C/O TUDOR INVESTMENT CORPORATION 1275 KING STREET (Street) GREENWICH CT 06831-2936 (City) (State) (Zip) Relationship of Reporting Person(s) to Issuer Director 10% Owner Officer (give title below) X Other (specify below) Chairman of Tudor

Explanation of Responses:

1. This Form 4 filing is being filed voluntarily to update the number of shares held by the reporting persons.

2. On October 11, 2006 RCN Corporation (the "Company") released additional shares of Common Stock that were previously held back in escrow at the time of the Company's reorganization in December 2004. As a result, The Tudor BVI Global Portfolio Ltd. ("BVI"), The Raptor Global Portfolio Ltd. ("Raptor"), The Altar Rock Fund L.P. ("Altar Rock"), and Tudor Proprietary Trading, L.L.C. ("TPT") received the following escrowed shares, respectively: 20,603, 92,649, 1,017, and 11,038.

3. Tudor Investment Corporation ("TIC") is the investment adviser, trading advisor, or general partner to each of BVI, Raptor, and Altar Rock, and is an affiliate of TPT. TIC disclaims beneficial ownership of the securities reported herein as indirectly owned except to the extent of its pecuniary interest in such securities.

4. The Common Stock (the "Shares) are reported herein as indirectly beneficially owned by Paul Tudor Jones II, and certain of the Shares are owned indirectly by TIC (see Footnote 3). The Shares are owned directly by BVI (1,179,555 Shares), Raptor (5,303,727 Shares), Altar Rock (58,290 Shares), and TPT (631,940 Shares). Because Mr. Jones is the controlling shareholder of TIC and the indirect controlling equity holder of TPT, Mr. Jones may be deemed to beneficially own the Shares deemed beneficially owned by each of such entities. Mr. Jones expressly disclaims such beneficial ownership.

	TUDOR INVESTMENT CORPORATION by /s/ Stephen N. Waldman, Managing Director	10/30/2006
	/s/ Paul Tudor Jones II	10/30/2006
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* 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).
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