Janus Henderson Group plc filed Amendment No. 14 to a Schedule 13G/A reporting beneficial ownership of 8,425,246 shares of SS&C Technologies Holdings, Inc. common stock, representing 3.5% of the class. The filing states the holdings arise through multiple registered asset-manager subsidiaries that exercise investment and voting discretion for client Managed Portfolios.
The filing shows shared power to vote on 8,425,246 shares and reports shared dispositive power of 14,017,309 shares. The Asset Managers disclaim rights to dividends or sale proceeds for those Managed Portfolios. Signature: Head of North America Compliance.
Positive
None.
Negative
None.
Insights
Large passive position disclosed by an investment group across managed accounts.
The filing identifies 8,425,246 shares as beneficially owned by Janus Henderson Group plc through multiple Asset Managers and reports this as 3.5% of the class. The disclosure notes voting and dispositive powers are exercised on behalf of client Managed Portfolios rather than held for corporate control.
Key dependencies include client mandates and account-level holdings; subsequent amendments or Form 13D/13G updates would show material changes to this position.
Amendment clarifies attribution and power structure across subsidiaries.
The schedule attributes shared voting power of 8,425,246 shares and shared dispositive power of 14,017,309 shares, and references an Exhibit identifying the specific subsidiary classification. The filing includes a standard disclaimer that Asset Managers lack rights to dividends or proceeds linked to those Managed Portfolios.
Investors should note the filing is a passive disclosure of holdings; any changes in voting/dispositive authority would be disclosed in future amendments.
Key Figures
Beneficial ownership:8,425,246 sharesPercent of class:3.5%Shared dispositive power:14,017,309 shares
3 metrics
Beneficial ownership8,425,246 sharesBeneficially owned as reported in Item 4
Percent of class3.5%Percent of common stock class reported in Item 4(b)
Shared dispositive power14,017,309 sharesNumber reported in Item 4(iv)
Key Terms
Beneficial owner, Managed Portfolios, Shared dispositive power
3 terms
Beneficial ownerregulatory
"may be deemed to be the beneficial owner of 8,425,246 common stock"
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.
Managed Portfoliosfinancial
"Managed Portfolios have the right to receive all dividends from, and the proceeds"
Shared dispositive powerregulatory
"Shared power to dispose or to direct the disposition of: 14017309"
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
SCHEDULE 13G
UNDER THE SECURITIES EXCHANGE ACT OF 1934
(Amendment No. 14)
SS&C TECHNOLOGIES HOLDINGS, INC.
(Name of Issuer)
Common Stock
(Title of Class of Securities)
78467J100
(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):
78467J100
1
Names of Reporting Persons
JANUS HENDERSON GROUP PLC
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
JERSEY
Number of Shares Beneficially Owned by Each Reporting Person With:
5
Sole Voting Power
0.00
6
Shared Voting Power
8,425,246.00
7
Sole Dispositive Power
0.00
8
Shared Dispositive Power
8,425,246.00
9
Aggregate Amount Beneficially Owned by Each Reporting Person
8,425,246.00
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)
3.5 %
12
Type of Reporting Person (See Instructions)
HC
SCHEDULE 13G
Item 1.
(a)
Name of issuer:
SS&C TECHNOLOGIES HOLDINGS, INC.
(b)
Address of issuer's principal executive offices:
80 LAMBERTON RD
WINDSOR, CT 06095
Item 2.
(a)
Name of person filing:
Janus Henderson Group plc
(b)
Address or principal business office or, if none, residence:
201 Bishopsgate
EC2M 3AE, United Kingdom
(c)
Citizenship:
Y9
(d)
Title of class of securities:
Common Stock
(e)
CUSIP No.:
78467J100
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:
Janus Henderson Group plc (JHG) is the ultimate parent of a number of SEC-registered investment advisers and foreign equivalents thereof, including but not limited to Janus Henderson Investors US LLC, Janus Henderson Investors UK Limited, Janus Henderson Investors Australia Institutional Funds Management Limited, Janus Henderson Investors Middle East Limited, Janus Henderson Investors (Jersey) Limited, Janus Henderson Investors (Japan) Limited, Janus Henderson Investors (Singapore) Limited, Kapstream Capital Pty Limited, Privacore Capital Advisors LLC, Tabula Investment Management Limited, and Victory Park Capital Advisors LLC (each, an Asset Manager and together, the Asset Managers). The Asset Managers generally exercise investment and/or voting discretion on behalf of their clients which include investment companies, other investment advisers, institutional separate accounts and retail separate accounts (collectively referred to herein as Managed Portfolios).
As a result of their exercise of investment and/or voting discretion on behalf of the Managed Portfolios, the Asset Managers may be deemed to be the beneficial owner of 8,425,246 common stock of SS&C Technologies Holdings, Inc. However, the Asset Managers do not have the right to receive any dividends from, or the proceeds from the sale of, the securities held in the Managed Portfolios and disclaim any ownership associated with such rights.
(b)
Percent of class:
3.5 %
(c)
Number of shares as to which the person has:
(i) Sole power to vote or to direct the vote:
0
(ii) Shared power to vote or to direct the vote:
8425246
(iii) Sole power to dispose or to direct the disposition of:
0
(iv) Shared power to dispose or to direct the disposition of:
14017309
Item 5.
Ownership of 5 Percent or Less of a Class.
Not Applicable
Item 6.
Ownership of more than 5 Percent on Behalf of Another Person.
If any other person is known to have the right to receive or the power to direct the receipt of dividends from, or the proceeds from the sale of, such securities, a statement to that effect should be included in response to this item and, if such interest relates to more than 5 percent of the class, such person should be identified. A listing of the shareholders of an investment company registered under the Investment Company Act of 1940 or the beneficiaries of employee benefit plan, pension fund or endowment fund is not required.
The Managed Portfolios have the right to receive all dividends from, and the proceeds from the sale of, the securities held in their respective accounts.
Of the Managed Portfolios, none own more than five percent of the common stock of SS&C Technologies Holdings, Inc.
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.
Please refer to Exhibit 99.
Item 8.
Identification and Classification of Members of the Group.
If a group has filed this schedule pursuant to §240.13d-1(b)(1)(ii)(J), so indicate under Item 3(j) and attach an exhibit stating the identity and Item 3 classification of each member of the group. If a group has filed this schedule pursuant to §240.13d-1(c) or §240.13d-1(d), attach an exhibit stating the identity of each member of the group.
N/A
Item 9.
Notice of Dissolution of Group.
Notice of dissolution of a group may be furnished as an exhibit stating the date of the dissolution and that all further filings with respect to transactions in the security reported on will be filed, if required, by members of the group, in their individual capacity. See Item 5.
N/A
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.
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.
What stake does Janus Henderson Group plc report in SSNC?
Janus Henderson Group plc reports beneficial ownership of 8,425,246 shares, representing 3.5% of SS&C Technologies Holdings, Inc. common stock. The position is held through multiple registered asset-manager subsidiaries that manage client accounts.
Does Janus Henderson have voting power over these SSNC shares?
The filing states shared power to vote on 8,425,246 shares. Voting and disposition are exercised by Asset Managers on behalf of Managed Portfolios, per the disclosure in the amendment.
Who holds dispositive power for the reported SSNC shares?
The amendment reports shared dispositive power of 14,017,309 shares. These dispositive rights are exercised by the Asset Managers for their clients across the Managed Portfolios.
Do the Asset Managers receive dividends or sale proceeds for these shares?
The Asset Managers disclaim the right to receive dividends or proceeds from sales of the securities held in the Managed Portfolios. Managed Portfolios themselves retain rights to dividends and sale proceeds.
Who signed the Schedule 13G/A amendment for Janus Henderson?
The amendment is signed by Kristin Mariani, identified as Head of North America Compliance, with a signature date of 5/15/2026 on the filing.
