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* Osnoss Joseph (Last) (First) (Middle) C/O SILVER LAKE, 2775 SAND HILL ROAD, SUITE 100 (Street) MENLO PARK CA 94025 (City) (State) (Zip)	2. Issuer Name and Ticker or Trading Symbol Virtu Financial, Inc. [ VIRT ]	5. Relationship of Reporting Person(s) to Issuer (Check all applicable) X Director 10% Owner Officer (give title below) Other (specify below)
	3. Date of Earliest Transaction (Month/Day/Year) 11/18/2015
	4. If Amendment, Date of Original Filed (Month/Day/Year)	6. Individual or Joint/Group Filing (Check Applicable Line) X Form filed by One Reporting Person 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
Class C common stock(1)(2)	11/18/2015		C(2)		3,100,579	D	(2)	0	I	Held through SLP Virtu Investors, LLC(3)(4)(5)(6)
Class A common stock	11/18/2015		C(2)		3,100,579	A	(2)	3,100,579	I	Held through SLP Virtu Investors, LLC(3)(4)(5)(6)
Class A common stock	11/18/2015		S		2,975,258	D	$21.65	0	I	Held through SLP III EW Feeder I, L.P.(4)(5)(6)(7)
Class A common stock	11/18/2015		S		3,100,579	D	$21.65	0	I	Held through SLP Virtu Investors, LLC(3)(4)(5)(6)

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
Non-voting common interest units of Virtu Financial LLC(2)	(2)	11/18/2015		C(2)			3,100,579	(2)	(2)	Class A common stock	3,100,579	(2)	0	I	Held through SLP Virtu Investors, LLC(3)(4)(5)(6)

Explanation of Responses:

1. Shares of Class C common stock of the Issuer ("Class C Common Stock") have one vote per share but no economic rights (including rights to dividends and distributions upon liquidation) and are issued in an equal amount to the number of non-voting common interest units of Virtu Financial LLC ("Virtu Financial Units") held.

2. Pursuant to the terms of the Exchange Agreement, effective as of April 15, 2015, by and among the Issuer, Virtu Financial LLC and the equityholders of Virtu Financial LLC (the "Exchange Agreement"), Virtu Financial Units, together with a corresponding number of shares of Class C Common Stock, may be exchanged for shares of Class A common stock of the Issuer ("Class A Common Stock"), which have one vote per share and economic rights (including rights to dividends and distributions upon liquidation), on a one-for-one basis at the discretion of the holder. The exchange rights under the Exchange Agreement do not expire.

3. Reflects securities held directly by SLP Virtu Investors, LLC ("Investors LLC"). The managing member of Investors LLC is Silver Lake Partners III DE (AIV III), L.P., the general partner of which is Silver Lake Technology Associates III, L.P. ("Silver Lake Technology"). The general partner of Silver Lake Technology is SLTA III (GP), L.L.C, the sole member of which is Silver Lake Group, L.L.C.

4. As managing member of Investors LLC, Silver Lake Partners III DE (AIV III), L.P. may be deemed to share voting and dispositive power with respect to securities directly held by Investors LLC. As the general partner of each of Investors LLC and Feeder I (as defined below), Silver Lake Technology may be deemed to share voting and dispositive power with respect to securities directly held by each of Investors LLC and Feeder I. As the general partner of Silver Lake Technology, SLTA III (GP), L.L.C., and its managing member, Silver Lake Group, L.L.C., may each be deemed to share voting and dispositive power with respect to securities directly held by each of Investors LLC, Feeder I and Silver Lake Technology.

5. The Reporting Person, who serves as a director of the Issuer, also serves as a Managing Member of Silver Lake Group, L.L.C. and as a member of the investment committee of Silver Lake Technology and may be deemed to share voting and dispositive power with respect to any securities beneficially owned by Silver Lake Group, L.L.C. or Silver Lake Technology, but disclaims beneficial ownership of such securities, except to the extent of his pecuniary interest therein.

6. Pursuant to Rule 16a-1(a)(4) under the Securities Exchange Act of 1934, as amended (the "Exchange Act"), this filing shall not be deemed an admission that the Reporting Person is, for purposes of Section 16 of the Exchange Act or otherwise, the beneficial owner of any equity securities in excess of such Reporting Person's pecuniary interest therein.

7. Reflects securities held directly by SLP III EW Feeder I, L.P. ("Feeder I"). The general partner of Feeder I is Silver Lake Technology. The general partner of Silver Lake Technology is SLTA III (GP), L.L.C, the sole member of which is Silver Lake Group, L.L.C.

Remarks:

	JOSEPH OSNOSS: /s/ JOSEPH OSNOSS	11/18/2015
	** 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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