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* NATIONAL ASSOCIATION OF SECURITIES DEALERS INC (Last) (First) (Middle) 1735 K. STREET, N.W. (Street) WASHINGTON DC 20006 (City) (State) (Zip)	2. Issuer Name and Ticker or Trading Symbol NASDAQ STOCK MARKET INC [ NDAQ ]	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) 03/30/2006
	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
Common Stock, par value $0.01 per share	03/30/2006		S		21,200	D	$16	10,516,542	D

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

Explanation of Responses:

Remarks:

As of the date of this filing, National Association of Securities Dealers, Inc. ("NASD") had issued and outstanding 10,516,542 warrants ("Warrants"), each exercisable for one share of The Nasdaq Stock Market, Inc.'s ("Nasdaq") common stock, par value $0.01 per share (the "Common Stock"), held by NASD is each of four approximately one year consecutive exercise periods (the first, second and the third of which expired at the close of business on June 27, 2003, June 25, 2004 and June 27, 2005, respectively, and the fourth of which expires on June 27, 2006). Until Nasdaq is operating as an exchange, the shares of Common Stock underlying the Warrants are subject to a voting trust agreement (the "Voting Trust") whereby a voting trustee will vote all shares of Common Stock underlying unexpired and unexercised Warrants, as directed by NASD. In addition, until the earlier to occur of the time Nasdaq satisfies conditions established by the Securities and Exchange Commission to operate as an exchange or the effectiveness of a registration statement filed by Nasdaq with the Securities and Exchange Commission with respect to the shares of Common Stock sold upon exercise of Warrants, the voting trustee will vote all such shares of Common Stock sold upon the exercise of Warrants, as directed by NASD (although NASD no longer has an economic interest in such shares). This Form 4 reflects the exercise of Warrants for the purchase of a total of 21,200 shares of Common Stock and the sale by NASD of such shares. As of the date hereof, NASD owns 10,516,542 shares of Common Stock underlying unexercised Warrants and thus subject to the Voting Trust.

	/s/ Scott C. Anderson, Vice President, Finance	04/05/2006
	** Signature of Reporting Person	Date
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