Morgan Stanley Falls Below 5% for Nuveen BXMX

Nuveen S&P 500 BuyWrite Income Fund ownership update: Morgan Stanley and Morgan Stanley Smith Barney LLC each report 0.0% beneficial ownership of the fund's Common Stock as of the filing.

Rhea-AI Filing Summary

Nuveen S&P 500 BuyWrite Income Fund ownership update: Morgan Stanley and Morgan Stanley Smith Barney LLC each report 0.0% beneficial ownership of the fund's Common Stock as of the filing. The amendment states both firms "have ceased to be the beneficial owner of more than five percent of the class of securities."

The filing identifies the issuer's principal office at 333 West Wacker Drive, Chicago, IL, includes Exhibit 99.1 (Joint Filing Agreement) and Exhibit 99.2 (Item 7 information), and is signed by authorized signatories with signature dates of 04/08/2026.

Insights

Institutional Ownership Specialist

Large institutional holders report falling below the 5% reporting threshold.

This Schedule 13G/A amendment records that Morgan Stanley and Morgan Stanley Smith Barney LLC no longer beneficially own more than 5% of the Common Stock. The filing updates ownership disclosures under Section 13 and preserves the vendor exhibits for subsidiary identification.

Impact is procedural: this reduces the set of >5% holders on public record. Subsequent filings would be needed to show any re-accumulation above reporting thresholds.

Key Figures

Reported beneficial ownership: 0.0% Trigger threshold referenced: 5 percent Signature date: 04/08/2026 +2 more

5 metrics

Reported beneficial ownership 0.0% Amount beneficially owned reported in Item 4

Trigger threshold referenced 5 percent Ceased to be beneficial owner of more than 5% of the class

Signature date 04/08/2026 Authorized signatories dated the amendment

Document date/cusip line 03/31/2026 Date appearing near cover/cusip line

Issuer address 333 West Wacker Drive, Chicago, IL Issuer principal executive offices listed in Item 1

Key Terms

Schedule 13G/A, beneficial owner, Release No. 34-39538, Joint Filing Agreement

4 terms

Schedule 13G/A regulatory

"Amendment No. 12 ) Nuveen S&P 500 BuyWrite Income Fund Common Stock"

A Schedule 13G/A is an amended public filing with the U.S. securities regulator that updates a previous Schedule 13G, disclosing when an individual or group holds a substantial (typically over 5%) stake in a company and is claiming a passive, non‑controlling intent. Investors monitor these updates because rising or falling holdings can signal changing confidence, potential future moves, or shifts in voting power — like watching a public ledger where large shareholders quietly adjust their positions.

beneficial owner financial

"has ceased to be the beneficial owner of more than five percent of the class of securities"

A beneficial owner is the person who ultimately owns or controls a financial asset or property, even if their name isn't directly on official documents. Think of it like someone who secretly holds the keys to a safe deposit box—others may appear to have access, but the true owner is the one who benefits from what's inside. Identifying beneficial owners helps ensure transparency and prevent illegal activities like money laundering or fraud.

Release No. 34-39538 regulatory

"In Accordance with the Release No. 34-39538 (January 12, 1998)"

Joint Filing Agreement legal

"Exhibit 99.1 Joint Filing Agreement"

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What does the Schedule 13G/A for BXMX mean?

It updates large-holder disclosure showing reduced ownership. The amendment reports Morgan Stanley entities now hold 0.0%, indicating they have "ceased to be the beneficial owner of more than five percent." It amends prior 13G holdings per SEC requirements.

Which Morgan Stanley entities filed the amendment for BXMX?

Morgan Stanley and Morgan Stanley Smith Barney LLC filed the amendment. Both list Delaware as their place of organization and share the address 1585 Broadway, New York, NY 10036 in the filing.

When were the signatures dated on the 13G/A amendment?

Signatures are dated April 8, 2026. Authorized signatories Claire Gordon and David Galasso signed the Schedule 13G/A amendment on 04/08/2026, certifying the updated ownership status.

Does this filing change the fund's outstanding share count or CUSIP?

No share count changes are disclosed in this amendment. The filing lists the CUSIP and class (Common Stock) but does not provide outstanding share totals or any amendment to the CUSIP-related amounts.

What exhibits accompany the Schedule 13G/A amendment?

Exhibits 99.1 and 99.2 are attached. Exhibit 99.1 is the Joint Filing Agreement and Exhibit 99.2 provides Item 7 subsidiary identification information as required under the referenced Release.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Accepted by SEC EDGAR 04/08/2026 - 05:03 PM Learn about SEC filing dates

SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

SCHEDULE 13G

UNDER THE SECURITIES EXCHANGE ACT OF 1934

(Amendment No. 12)

Nuveen S&P 500 BuyWrite Income Fund

(Name of Issuer)

Common Stock

(Title of Class of Securities)

6706ER101

(CUSIP Number)

03/31/2026

(Date of Event Which Requires Filing of this Statement)

Check the appropriate box to designate the rule pursuant to which this Schedule is filed:

Rule 13d-1(b)

Rule 13d-1(c)

Rule 13d-1(d)

schemaVersion:

SCHEDULE 13G

CUSIP Number(s): 6706ER101

1

Names of Reporting Persons

Morgan Stanley

2

Check the appropriate box if a member of a Group (see instructions)

(a)
(b)

3

Sec Use Only

4

Citizenship or Place of Organization

DELAWARE

Number of Shares Beneficially Owned by Each Reporting Person With:

5	Sole Voting Power 0.00
6	Shared Voting Power 0.00
7	Sole Dispositive Power 0.00
8	Shared Dispositive Power 0.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

0.00

10

Check box if the aggregate amount in row (9) excludes certain shares (See Instructions)

11

Percent of class represented by amount in row (9)

0.0 %

12

Type of Reporting Person (See Instructions)

HC, CO

Comment for Type of Reporting Person: As of the date hereof, Morgan Stanley has ceased to be the beneficial owner of more than five percent of the class of securities.

SCHEDULE 13G

CUSIP Number(s): 6706ER101

1

Names of Reporting Persons

Morgan Stanley Smith Barney LLC

2

Check the appropriate box if a member of a Group (see instructions)

(a)
(b)

3

Sec Use Only

4

Citizenship or Place of Organization

DELAWARE

Number of Shares Beneficially Owned by Each Reporting Person With:

5	Sole Voting Power 0.00
6	Shared Voting Power 0.00
7	Sole Dispositive Power 0.00
8	Shared Dispositive Power 0.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

0.00

10

Check box if the aggregate amount in row (9) excludes certain shares (See Instructions)

11

Percent of class represented by amount in row (9)

0 %

12

Type of Reporting Person (See Instructions)

BD, IA, CO

Comment for Type of Reporting Person: As of the date hereof, Morgan Stanley Smith Barney LLC has ceased to be the beneficial owner of more than five percent of the class of securities.

SCHEDULE 13G

Item 1.
(a)	Name of issuer: Nuveen S&P 500 BuyWrite Income Fund
(b)	Address of issuer's principal executive offices: 333 WEST WACKER DRIVE, CHICAGO, IL, 60606
Item 2.
(a)	Name of person filing: 1: Morgan Stanley 2: Morgan Stanley Smith Barney LLC
(b)	Address or principal business office or, if none, residence: 1: 1585 Broadway, New York, NY 10036 ;2: 1585 Broadway, New York, NY 10036
(c)	Citizenship: 1: Delaware 2: Delaware
(d)	Title of class of securities: Common Stock
(e)	CUSIP No.:
Item 3.	If this statement is filed pursuant to §§ 240.13d-1(b) or 240.13d-2(b) or (c), check whether the person filing is a:
(a)	Broker or dealer registered under section 15 of the Act (15 U.S.C. 78o);
(b)	Bank as defined in section 3(a)(6) of the Act (15 U.S.C. 78c);
(c)	Insurance company as defined in section 3(a)(19) of the Act (15 U.S.C. 78c);
(d)	Investment company registered under section 8 of the Investment Company Act of 1940 (15 U.S.C. 80a-8);
(e)	An investment adviser in accordance with § 240.13d-1(b)(1)(ii)(E);
(f)	An employee benefit plan or endowment fund in accordance with § 240.13d-1(b)(1)(ii)(F);
(g)	A parent holding company or control person in accordance with § 240.13d-1(b)(1)(ii)(G);
(h)	A savings associations as defined in Section 3(b) of the Federal Deposit Insurance Act (12 U.S.C. 1813);
(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 (15 U.S.C. 80a-3);
(j)	A non-U.S. institution in accordance with § 240.13d-1(b)(1)(ii)(J). If filing as a non-U.S. institution in accordance with § 240.13d-1(b)(1)(ii)(J), please specify the type of institution:
(k)	Group, in accordance with Rule 240.13d-1(b)(1)(ii)(K).
Item 4.	Ownership
(a)	Amount beneficially owned: See the response(s) to Item 9 on the attached cover page(s).
(b)	Percent of class: 0.0 %
(c)	Number of shares as to which the person has:
	(i) Sole power to vote or to direct the vote: See the response(s) to Item 5 on the attached cover page(s).
	(ii) Shared power to vote or to direct the vote: See the response(s) to Item 6 on the attached cover page(s).
	(iii) Sole power to dispose or to direct the disposition of: See the response(s) to Item 7 on the attached cover page(s).
	(iv) Shared power to dispose or to direct the disposition of: See the response(s) to Item 8 on the attached cover page(s).
Item 5.	Ownership of 5 Percent or Less of a Class.
	Ownership of 5 percent or less of a class
Item 6.	Ownership of more than 5 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 or Control Person.
	If a parent holding company has filed this schedule, pursuant to Rule 13d-1(b)(ii)(G), so indicate under Item 3(g) and attach an exhibit stating the identity and the Item 3 classification of the relevant subsidiary. If a parent holding company has filed this schedule pursuant to Rule 13d-1(c) or Rule 13d-1(d), attach an exhibit stating the identification of the relevant subsidiary. See Exhibit 99.2
Item 8.	Identification and Classification of Members of the Group.
	Not Applicable
Item 9.	Notice of Dissolution of Group.
	Not Applicable

Item 10.

Certifications:

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 the securities and were not acquired and are not held in connection with or as a participant in any transaction having that purpose or effect, other than activities solely in connection with a nomination under ?? 240.14a-11. * In Accordance with the Securities and Exchange Commission Release No. 34-39538 (January 12, 1998) (the "Release"), this filing reflects the securities beneficially owned, or that may be deemed to be beneficially owned, by certain operating units (collectively, the "MS Reporting Units") of Morgan Stanley and its subsidiaries and affiliates (collectively, "MS"). This filing does not reflect securities, if any, beneficially owned by any operating units of MS whose ownership of securities is disaggregated from that of the MS Reporting Units in accordance with the Release.

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.

Morgan Stanley

Signature:	Claire Gordon
Name/Title:	Authorized Signatory, Morgan Stanley
Date:	04/08/2026

Morgan Stanley Smith Barney LLC

Signature:	David Galasso
Name/Title:	Authorized Signatory, Morgan Stanley Smith Barney LLC
Date:	04/08/2026

Exhibit Information

EXHIBIT NO. EXHIBITS ------------------ ------------------------------------ 99.1 Joint Filing Agreement 99.2 Item 7 Information * Attention. Intentional misstatements or omissions of fact constitute federal criminal violations (see 18 U.S.C. 1001).