BI Bell Industries,

CUSIP NO. 078107109 13G


1 Name of Reporting Person / IRS Identification Number:
 Advisory Research, Inc. / 36-2831881

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2 Check the Appropriate Box if a Member of a Group (a) [ ]
 (See Instructions) (b) [ ]

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3 SEC Use Only

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4 Citizenship or Place of Organization
 Delaware

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 Number of
 5 Sole Voting Power
 Shares 176017 Shares
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 Beneficially
 6 Shared Voting Power
 Owned By 0 Shares
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 Each
 7 Sole Dispositive Power
 Reporting 176017 Shares
 -----------------------------------------------
 Person
 8 Shared Dispositive Power
 With 0 Shares
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9 Aggregate Amount Beneficially Owned by Each Reporting Person
 176017 Shares

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10 Check if the Aggregate Amount in Row (9) Excludes Certain
 Shares [ ] (See Instructions)

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11 Percent of Class Represented by Amount in Row (9)
 2.035%

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12 Type of Reporting Person
 IA

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Item 1 (a) Name of Issuer: Bell Industries, Inc.
Item 1 (b) Name of Issuer's Principal Executive Offices:
 1960 E. Grand Avenue, Suite 560
 El Segundo, CA 90245

Item 2 (a) Person Filing: Advisory Research, Inc.
Item 2 (b) Address: 180 North Stetson St., Suite 5500
 Chicago, IL 60601

Item 2 (c) Citizenship: Advisory Research, Inc. is a
 Delaware Corporation

Item 2 (d) Title of Class of Securities: Common Stock
Item 2 (e) CUSIP Number: 078107109

Item 3 If this statement is filed pursuant to Rules
 13d-1(b) or 13d-2(b), check whether the person
 filing is a:

 (a) [ ] Broker or Dealer registered under Section
 15 of the Act

 (b) [ ] Bank as defined in Section 3(a)(6) of the
 Act

 (c) [ ] Insurance Company as defined in Section
 3(a)(19) of the Act

 (d) [ ] Investment Company registered under
 Section 8 of the Investment Company Act

 (e) [X] Investment Advisor in accordance with
 section 240.13d-1(b)(1)(ii)(E)

 (f) [ ] Employee Benefit Plan or Endowment Fund
 in accordance with section 240.13d-1(b)
 (1)(ii)(F)

 (g) [ ] Parent Holding Company or Control Person
 in accordance with section 13d-1(b)
 (1)(ii)(G)

 (h) [ ] A savings association as defined in
 section 3(b) of the Federal Deposit
 Insurance Act

 (i) [ ] A church plan that is excluded from
 the definition of an investment company
 under section 3(c)(14) of the Investment
 Company Act of 1940

Item 4 Ownership

 (a) Amount Beneficially Owned:
 Advisory Research, Inc. 176017 Shares

 (b) Percent of Class 2.035%

 (c) Number of shares as to which reporting person has:
 (i) Sole Voting Power 176017 Shares
 (ii) Shared Voting Power 0 Shares
 (iii) Sole Dispositive Power 176017 Shares
 (iv) Shared Dispositive Power 0 Shares

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 if Members of
 the Group: Not Applicable

Item 9 Notice of Dissolution of Group: Not Applicable

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 such securities and were not acquired and are
 not held in connection with or as a participant
 in any transaction having such purposes 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.

 02/13/2008
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 Date

 /s/ Brien M. O'Brien
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 Signature

 Brien M. O'Brien, Chairman & CEO
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 Name/Title