UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

SCHEDULE 13D

Under the Securities Exchange Act of 1934

(Amendment No. 25)

ALLIANCEBERNSTEIN HOLDING L.P.

(f/k/a Alliance Capital Management Holding L.P.)

(Name of Issuer)

Units Representing Assignments of Beneficial Ownership of Limited Partnership Interests

(Title of Class of Securities)

01855A101

(CUSIP Number)

Anders Malmström

Senior Executive Vice President and Chief Financial Officer

AXA Equitable Holdings, Inc.

1290 Avenue of the Americas

New York, New York 10104

(212) 554-1234

(Name, Address and Telephone Number of Person Authorized to Receive Notices and Communications)

With a copy to:

Helen Browne, General Counsel

AXA, 25, avenue Matignon

75008 Paris, France

011-331-40-75-57-00

October 1, 2018

(Date of Event which Requires Filing of this Statement)

If the filing person has previously filed a statement on Schedule 13G to report the acquisition which is the subject of this Schedule 13D, and is filing this schedule because of ss. 240.13d-1(e), 240.13d-1(f) or 240.13d-1(g), check the following box.  ☐

NOTE: Schedules filed in paper format shall include a signed original and five copies of the schedule, including all exhibits. See Rule 13d-7 for other parties to whom copies are to be sent.

The information required on 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).

(Continued on following pages)

CUSIP No. 01855A101

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This Amendment No. 25 amends the Statement on Schedule 13D (“Schedule 13D”) initially filed on August 4, 1992 with the Securities and Exchange Commission by AXA, Midi Participations, Finaxa (which merged in AXA as of December 16, 2005), the Mutuelles AXA (as herein defined) and the Trustees of a Voting Trust (which was dissolved on June 30, 2017), as amended by Amendment No. 1 to the Schedule 13D filed on July 29, 1993, Amendment No. 2 to the Schedule 13D filed on September 14, 1994, Amendment No. 3 to the Schedule 13D filed on October 22, 1996, Amendment No. 4 to the Schedule 13D filed on July 11, 1997, Amendment No. 5 to the Schedule 13D filed on September 4, 1997, Amendment No. 6 to the Schedule 13D filed on April 9, 1999, Amendment No. 7 to the Schedule 13D filed on November 4, 1999, Amendment No. 8 to the Schedule 13D filed on June 23, 2000, Amendment No. 9 to the Schedule 13D filed on November 27, 2002, and Amendment No. 10 to the Schedule 13D filed on March 9, 2004, Amendment No. 11 to the Schedule 13D filed on December 22, 2004, Amendment No. 12 to the Schedule 13D filed on March 7, 2007, Amendment No. 13 to the Schedule 13D filed on December 19, 2008, Amendment No. 14 to the Schedule 13D filed on January 8, 2009, Amendment No. 15 to the Schedule 13D filed on April 1, 2009, Amendment No. 16 to the Schedule 13D filed on December 16, 2011, Amendment No. 17 to the Schedule 13D filed on September 23, 2013, Amendment No. 18 to the Schedule 13D filed on December 20, 2013, Amendment No. 19 to the Schedule 13D filed on January 5, 2016, Amendment No. 20 to the Schedule 13D filed on May 1, 2017, Amendment No. 21 to the Schedule 13D filed on July 3, 2017, Amendment No. 22 to the Schedule 13D filed on December 13, 2017, Amendment No. 23 to the Schedule 13D filed on March 6, 2018 and Amendment No. 24 to the Schedule 13D filed on April 25, 2018, which Schedule 13D relates to units (“Units”) representing assignments of beneficial ownership of limited partnership interests of AllianceBernstein Holding L.P. (formerly known as Alliance Capital Management Holding L.P.), a Delaware limited partnership (“AB Holding”).

Item 2 of the Schedule 13D is hereby amended and restated in its entirety as follows.

This statement is being filed by (i) AXA S.A., a company organized under the laws of France (“AXA”), (ii) AXA Assurances I.A.R.D. Mutuelle and AXA Assurances Vie Mutuelle, two mutual insurance companies organized under the laws of France (the “Mutuelles AXA”), (iii) AXA Equitable Holdings, Inc., a Delaware corporation (“Equitable Holdings”), (iv) AXA Equitable Financial Services, LLC, a Delaware limited liability company (“AXAFS”), (v) AXA Equitable Life Insurance Company, a New York stock life insurance company, which is wholly owned by AXAFS (“AXA Equitable”), (vi) ACMC, LLC, a Delaware limited liability company (“ACMC”), (vii) MONY Life Insurance Company of America, an Arizona stock life insurance company, which is wholly owned by AXAFS (“MLOA”), and (viii) AXA-IM Holding U.S. Inc., a Delaware corporation, which is wholly owned by Equitable Holdings (“AXA-IM Holding”). AXA, the Mutuelles AXA, Equitable Holdings, AXAFS, AXA Equitable, ACMC, MLOA, and AXA-IM Holding are hereinafter collectively referred to as the “Reporting Persons.”

AXA. AXA is a holding company for an international group of insurance and related financial service companies, including each of the Reporting Persons. The address of AXA’s principal business and office is 25, avenue Matignon, 75008 Paris, France. As of December 31, 2017, the Mutuelles AXA, directly beneficially owned 14.13% of AXA’s ordinary shares (representing 23.97% of the voting power). In addition, as of December 31, 2016, 0.02% of the ordinary shares of AXA without the power to vote were owned by certain subsidiaries of AXA.

The Mutuelles AXA. AXA Courtage Assurance Mutuelle was merged into AXA Assurances I.A.R.D Mutuelle as of December 31, 2006. Each of the Mutuelles AXA is a mutual insurance company organized under the laws of France. The address of each of the Mutuelles AXA’s principal place of business and office is 313 Terrasses de l’Arche, 92727 Naterre Cedex, France.

Equitable Holdings and Subsidiaries. Equitable Holdings is a holding company for a group of insurance and related financial service companies, including AXAFS and its subsidiaries. The address of Equitable Holdings’ principal place of business and office is 1290 Avenue of the Americas, New York, New York 10104.

AXAFS and Subsidiaries. AXAFS is a holding company. AXAFS and its subsidiaries (including AXA Equitable and MLOA, each an indirect wholly owned subsidiary) provide diversified financial services to a broad spectrum of financial advisory, insurance and investment management customers. AXAFS wholly owns (i) AXA Equitable, which in turn wholly owns ACMC, and (ii) MLOA. ACMC is a holding company. The address of the principal place of business and office of AXAFS, AXA Equitable and ACMC is 1290 Avenue of the Americas, New York, New York 10104 and of MLOA is 525 Washington Boulevard, Jersey City, New Jersey 07310.

AXA-IM Holding. AXA-IM Holding is a holding company. The address of AXA-IM Holding’s principal place of business and office is 1290 Avenue of the Americas, New York, New York 10104.

The (i) name, (ii) residence or business address, (iii) present principal occupation or employment and the name, principal place of business and address of any corporation or other organization in which such employment is conducted and (iv) citizenship of each of the executive officers and directors of each of the Reporting Persons are set forth on Exhibit 5 hereto. None of the Reporting Persons nor, to the knowledge of any Reporting Person, any natural person named in Exhibit 5 hereto has, during the last five years, been convicted in a criminal proceeding (excluding traffic violations or similar misdemeanors) or was a party to a civil proceeding of a judicial or administrative body of competent jurisdiction and as a result of which any such Reporting Person or person was or is subject to a judgment, decree or final order enjoining future violations of, or prohibiting or mandating activities subject to, Federal or state securities laws or finding any violation with respect to such laws.

Item 3 of the Schedule 13D is hereby amended by inserting the following paragraph as set forth below.

See Item 4 below.

Item 4 of the Schedule 13D is hereby amended by inserting the following paragraph as set forth below.

On October 1, 2018, AXA Financial, Inc. (“AXF”) merged with and into its direct parent, Equitable Holdings, with Equitable Holdings continuing as the surviving entity. As a result of the merger, Equitable Holdings acquired direct beneficial ownership of 43,032,758 AB Capital Units, which were previously directly beneficially owned by AXF.

Items 5(a), (b) and (c) are hereby amended and restated in their entirety as set forth below.

(a) & (b) At the close of business on October 1, 2018 and immediately following the transactions described in Item 4 above, Equitable Holdings beneficially owned directly 2,312,163 Units representing approximately 2.4% of the Units outstanding and 51,192,758 units of limited partnership interest of AllianceBernstein L.P. (“AB Capital Units”) representing approximately 18.9% of the AB Capital Units outstanding; AXA Equitable did not beneficially own directly any Units or AB Capital Units; ACMC beneficially owned directly 1,444,356 Units representing approximately 1.5% of the Units outstanding and 74,406,933 AB Capital Units representing approximately 27.5% of the AB Capital Units outstanding; MLOA did not beneficially own directly any Units and beneficially owned directly 2,587,472 AB Capital Units representing approximately 1.0% of the AB Capital Units outstanding; and AXA-IM Holding did not beneficially own directly any Units and beneficially owned directly 41,934,582 AB Capital Units representing approximately 15.5% of the AB Capital Units outstanding. Equitable Holdings, ACMC, MLOA and AXA-IM Holding have the sole power to vote or direct the vote and the sole power to dispose or direct the disposition of each of their respective directly owned Units and AB Capital Units. By reason of its ownership interest in AXAFS, ACMC, AXA Equitable, MLOA and AXA-IM Holding, Equitable Holdings may be deemed to beneficially own indirectly, and to have voting and dispositive power with respect to the 1,444,356 Units owned directly by ACMC which, together with the 2,312,163 Units owned directly by Equitable Holdings, represent approximately 3.8% of the Units outstanding, and the 74,406,933 AB Capital Units owned directly by ACMC, the 41,934,582 AB Capital Units owned directly by AXA-IM Holding and the 2,587,472 AB Capital Units owned directly by MLOA, which, together with the 51,192,758 AB Capital Units owned directly by Equitable Holdings, represent approximately 63.0% of the AB Capital Units outstanding. By reason of its ownership interest in ACMC, AXA Equitable and MLOA, AXAFS may be deemed to beneficially own indirectly, and to have voting and dispositive power with respect to, the 1,444,356 Units owned directly by ACMC representing approximately 1.5% of the Units outstanding, and the 74,406,933 AB Capital Units owned directly by ACMC, and the 2,587,472 AB Capital Units owned directly by MLOA which collectively represent approximately 28.5% of the AB Capital Units outstanding. By reason of its ownership interest in ACMC, AXA Equitable may be deemed to beneficially own indirectly, and to have voting and dispositive power with respect to, the 1,444,356 Units owned directly by ACMC representing approximately 1.5% of the Units outstanding, and the 74,406,933 AB Capital Units owned directly by ACMC representing 27.5% of the AB Capital Units outstanding.

(This excludes Units acquired by the Reporting Persons and their affiliates solely for investment purposes on behalf of client discretionary accounts.)

AXA, by reason of its direct ownership of approximately 71.9% of the outstanding shares of common stock of Equitable Holdings, may be deemed to beneficially own all of the Units and AB Capital Units owned directly and indirectly by Equitable Holdings. In addition, the Mutuelles AXA, as a group, may be deemed to be beneficial owners of such Units and AB Capital Units. Each of AXA and the Mutuelles AXA expressly declares that the filing of this Schedule 13D shall not be construed as an admission that it is, for purposes of Section 13(d) of the Securities Exchange Act of 1934, as amended, the beneficial owner of such Units or AB Capital Units.

Other than as described in Item 4 above, none of the Reporting Persons owns any Units or AB Capital Units or options or other rights to acquire Units or AB Capital Units presently or within 60 days.

To the knowledge of the Reporting Persons, none of the directors and executive officers of the Reporting Persons listed in Exhibit 5 hereto own any Units or AB Capital Units or options or other rights to acquire Units or AB Capital Units presently or within 60 days.

(c) Other than as described in Item 4 above, during the 60 days preceding the filing of this Amendment, no transactions in Units or AB Capital Units were made by the Reporting Persons, or, to the knowledge of the Reporting Persons, any natural person named in Exhibit 5 hereto.

SIGNATURES

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.

Date: October 1, 2018

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.

Date: October 1, 2018

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.

Date: October 1, 2018

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.

Date: October 1, 2018

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.

Date: October 1, 2018

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.

Date: October 1, 2018

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.

Date: October 1, 2018