AdvisorCensus / Financial advisors / Massachusetts / Boston / Santander Securities
Santander Securities
Filed as SANTANDER SECURITIES · Legal name Santander Securities LLC
Santander Securities is an SEC-registered investment advisory firm in Boston, MA, registered since 1999, reporting $1 billion to $5 billion in regulatory assets under management in its Form ADV filing dated September 17, 2026.
Quick answers
From the filingHow is Santander Securities compensated?
On its Form ADV (Item 5.E, October 2026), Santander Securities reports these compensation arrangements: a percentage of assets under its management.
Where is Santander Securities located?
Santander Securities' principal office is in Boston, MA, according to its Form ADV; the October 2026 filing also lists 23 other offices (Schedule D, Section 1.F).
Is Santander Securities registered with the SEC or a state?
Santander Securities is an SEC-registered investment advisory firm, registered since 1999. Status as filed: Approved. CRD 41791.
How much does Santander Securities manage?
Santander Securities reports $3,140,983,898 in regulatory assets under management in its Form ADV filing dated September 17, 2026 (100% discretionary).
How have Santander Securities' assets and staff changed since 2021?
In the Form ADV data for Santander Securities: Regulatory assets under management: $1,709,547,962 in the October 2021 data and $3,140,983,898 in the October 2026 data, up 84%. Total employees: 767 in October 2021 and 449 in October 2026. Assets under management move with markets as well as with clients coming and going.
What types of clients does Santander Securities serve?
By number of clients on Form ADV Item 5.D: individuals (other than high net worth individuals) (10,832); other (249); corporations or other businesses not listed above (41).
Which custodians does Santander Securities use?
Santander Securities' most recent Form ADV filing (Schedule D, Section 5.K(3)) lists National Financial Services LLC as a custodian holding 10% or more of its separately managed account assets.
Does Santander Securities report any disciplinary disclosures?
Reports 11 disclosure items on Form ADV Item 11: yes answers to 1 question about criminal matters, 9 questions about regulatory matters, and 1 question about civil court matters (11.A(2), 11.C(1), 11.C(2), 11.C(4), 11.C(5), 11.D(1), 11.D(2), 11.D(4), 11.E(2), 11.G, 11.H(2)). Each question covers the firm and its advisory affiliates, and one event can produce several yes answers. The detail of any item is on the firm's SEC record: https://adviserinfo.sec.gov/firm/summary/41791
What changed in Santander Securities' recent Form ADV filings?
In the August 2026 filing data: Updated its list of owners and control persons (Schedule A).
From the Form ADV filing
Every figure below is as the firm filed it with regulators, as of October 2026.
How the firm is compensated
Item 5.E- A percentage of assets under your management
Item 5.E lists how the firm is compensated for its advice; Items 5.B, 6.A, and 7.A show whether its people or related companies can also earn commissions. Percentage of assets, fixed, hourly, subscription, and performance-based fees come from clients (a performance-based fee depends on investment results); commissions come with a sale or a trade, often from the company behind the product. How fees, commissions, and other arrangements differ
Fees and minimums
Form ADV Part 2ASee the firm's brochure (dated April 17, 2026) for its fees and any account minimum, on the SEC's IAPD site.
Regulatory assets under management
Item 5.F$3,140,983,898 as of October 2026, filing dated September 17, 2026.
A measure of scale, not skill or returns. Discretionary means the firm decides trades; non-discretionary means clients approve each one. What assets under management means
Who the firm serves
Item 5.DA firm with no individual clients is an institutional manager even if it manages billions; the mix tells you whom the practice is built around.
Advisory services
Item 5.G- Financial planning services
- Portfolio management for individuals and/or small businesses
- Selection of other advisers (including private fund managers)
- Other
Registration and firm details
Items 1, 2, 5- Legal name
- Santander Securities LLC
- Also doing business as
- SANTANDER INVESTMENT SERVICES, SANTANDER PRIVATE BANK, SANTANDER PRIVATE BANKING
- Registration
- SEC-registered investment adviser. Status as filed: Approved.
- Registered since
- 1999 (27 years)
- Employees
- Total: 449. Performing investment advisory functions: 108.
- Wrap fee program participation
- Yes.
- Custodians (Schedule D, Section 5.K(3))
-
Custodians holding 10% or more of the firm's separately managed account assets, as filed on Form ADV (Schedule D, Section 5.K(3)). A custodian holds client assets; it does not endorse or supervise the firm. AdvisorCensus has no relationship with any custodian.
- Other offices (Schedule D, Section 1.F)
-
23 other offices, as of the October 2026 filing
- States registered or notice-filed
-
53 states or jurisdictions
SEC-registered investment advisers are examined by the SEC. SEC, state, and exempt registration
Disclosures
Item 1111 Reports 11 disclosure items on Form ADV Item 11. View on IAPD.
Questions answered yes on this filing
Criminal matters Items 11.A and 11.B
- 11.A(2) In the past ten years, has the firm or an advisory affiliate been charged with a felony?
Regulatory matters Items 11.C to 11.G
- 11.C(1) Has the SEC or the CFTC ever found that the firm or an advisory affiliate made a false statement or omission?
- 11.C(2) Has the SEC or the CFTC ever found that the firm or an advisory affiliate was involved in a violation of SEC or CFTC regulations or statutes?
- 11.C(4) Has the SEC or the CFTC ever entered an order against the firm or an advisory affiliate in connection with investment-related activity?
- 11.C(5) Has the SEC or the CFTC ever imposed a civil money penalty on the firm or an advisory affiliate, or ordered the firm or an advisory affiliate to cease and desist from an activity?
- 11.D(1) Has another federal regulator, a state regulator, or a foreign financial regulator ever found that the firm or an advisory affiliate made a false statement or omission, or was dishonest, unfair, or unethical?
- 11.D(2) Has another federal regulator, a state regulator, or a foreign financial regulator ever found that the firm or an advisory affiliate was involved in a violation of investment-related regulations or statutes?
- 11.D(4) In the past ten years, has another federal regulator, a state regulator, or a foreign financial regulator entered an order against the firm or an advisory affiliate in connection with investment-related activity?
- 11.E(2) Has a self-regulatory organization or a commodities exchange ever found that the firm or an advisory affiliate was involved in a violation of its rules, other than a minor rule violation under a plan the SEC approved?
- 11.G Is the firm or an advisory affiliate now the subject of a regulatory proceeding that could result in a yes answer to any part of 11.C, 11.D, or 11.E?
Civil court matters Item 11.H
- 11.H(2) Is the firm or an advisory affiliate now the subject of a civil proceeding that could result in a yes answer to any part of 11.H(1)?
Each question covers the firm and its advisory affiliates: its current employees other than clerical staff, its officers, partners, and directors, and anyone who controls the firm or is controlled by it. One event can produce yes answers to several questions. SEC-registered advisers and exempt reporting advisers may leave out events more than ten years old, and may answer 11.A(2) and 11.B(2) for pending charges only. What happened, and who was involved, is on the Disclosure Reporting Pages of the IAPD record. Reading a firm's disclosures
Assets and staff over time
Items 5.A, 5.F| Data period | Assets under management | Employees | Filing dated |
|---|---|---|---|
| October 2026 | $3,140,983,898 | 449 | September 17, 2026 |
| October 2025 | $2,553,311,017 | 440 | July 29, 2025 |
| October 2024 | $2,130,323,875 | 478 | September 9, 2024 |
| October 2023 | $1,848,708,275 | 530 | September 26, 2023 |
| October 2022 | $2,245,567,681 | 599 | September 23, 2022 |
| October 2021 | $1,709,547,962 | 767 | June 28, 2021 |
Regulatory assets under management: $1,709,547,962 in the October 2021 data and $3,140,983,898 in the October 2026 data, up 84%.
Total employees: 767 in October 2021 and 449 in October 2026.
As filed in each year's data for the same month. Assets under management move with markets as well as with clients coming and going; they measure scale, not skill or returns. Most firms update these figures once a year.
Changes in the filing
Last 12 months- August 2026
- Updated its list of owners and control persons (Schedule A).
- June 2026
- Updated its list of owners and control persons (Schedule A).
- April 2026
- Added the business name Santander Private Banking.
- Added the business name Santander Private Bank.
- Employees performing advisory functions went from 103 to 108.
- Regulatory assets under management went from $2,553,311,017 to $3,140,983,898 (+23%).
- Added an office in Jackson, NJ.
- Added an office in Manalapan, NJ.
- Added an office in Manhasset, NY.
- Added an office in Monroe Township, NJ.
- Added an office in Watertown, MA.
- No longer lists an office in East Providence, RI.
- No longer lists an office in Florham Park, NJ.
- No longer lists an office in Jersey City, NJ.
- No longer lists an office in Seekonk, MA.
- No longer lists an office in Toms River, NJ.
- Updated its list of owners and control persons (Schedule A).
- March 2026
- Updated its list of owners and control persons (Schedule A).
Compared month to month from the SEC's monthly adviser data and the state compilation feed. Owners and control persons are summarized, never named.
Websites listed on Form ADV
Item 1.ISource: Form ADV, as of October 2026. Values appear as filed; a value the firm did not report is shown as "Not reported."
Cite this page
AdvisorCensus. Santander Securities (CRD 41791): Form ADV filing data as of October 2026. https://advisorcensus.com/firm/santander-securities-boston-ma-41791