SEC-registered wealth management firm Broker-dealer affiliated
Santander Securities
As of its Form ADV filed September 17, 2026, Santander Securities, an SEC-registered, broker-dealer affiliated wealth management firm in Boston, Massachusetts, reported $3.1 billion in regulatory assets under management across 11,152 accounts, ranking #32 among all wealth firms in Massachusetts by assets.
Registration
- Registration
- SEC-registered, Approved
- CRD number
- 41791
- SEC file number
- 801-56796
- Registered since
- September 2, 1999
- Latest Form ADV filing
- September 17, 2026
- Legal name
- SANTANDER SECURITIES LLC
- Organized as
- Limited Liability Company
- Fiscal year ends
- December
- Other offices
- 417
Key figures
- Regulatory assets under management
- $3.1 billion
- Discretionary
- $3.1 billion (100.0%)
- Non-discretionary
- $0
- Accounts
- 11,152 (11,152 discretionary)
- Clients
- 11,124, approximate as reported
- Employees
- 449
- Advisory staff
- 108 performing investment advisory functions
- Average account
- $281,652
- Asset growth, 1 year
- 23.0% (from $2.6 billion a year earlier)
- Asset growth, 3-year annual rate
- 19.3% (from $1.8 billion three years earlier)
- Asset growth, 5-year annual rate
- 12.9% (from $1.7 billion five years earlier)
- Client growth, 1 year
- 7.0% (from 10,401)
Broker-dealer affiliated. The firm is itself a broker-dealer as well as an investment adviser (Form ADV Item 6.A(1)). It is ranked among all wealth firms, the directory's view that includes wirehouses and broker-dealer firms, not in the main lists of independent RIAs. How firms are classed.
Growth rates come from the SEC's yearly snapshots and are left blank when the years are not comparable.
Rankings
Among all wealth firms, including wirehouses and broker-dealer firms.
Assets over time
Data table
| As of | RAUM |
|---|---|
| October 1, 2010 | $213.2 million |
| October 3, 2011 | $125.9 million |
| October 1, 2012 | $96.6 million |
| October 1, 2013 | $142.6 million |
| October 1, 2014 | $195.8 million |
| October 1, 2015 | $448.0 million |
| October 3, 2016 | $556.1 million |
| October 2, 2017 | $610.0 million |
| October 1, 2018 | $897.0 million |
| October 1, 2019 | $1.0 billion |
| October 1, 2020 | $1.4 billion |
| October 4, 2021 | $1.7 billion |
| October 3, 2022 | $2.2 billion |
| October 5, 2023 | $1.8 billion |
| October 1, 2024 | $2.1 billion |
| September 2, 2025 | $2.6 billion |
| October 2, 2026 | $3.1 billion |
Clients and services
Client mix
| Measure | Bar | RAUM |
|---|---|---|
| Individuals (other than high net worth) 10,832 clients | $2.9 billion | |
| Other 249 clients | $245.5 million | |
| Corporations or other businesses 41 clients | $42.4 million | |
| Charitable organizations 2 clients | $1.0 million |
How the firm is paid
- A percentage of assets under management
Advisory services
- Financial planning
- Portfolio management for individuals or small businesses
- Selection of other advisers
- Other
Financial planning clients (Item 5.H): 2500.
Wrap fee program sponsor or portfolio manager: yes.
Other business, affiliations and custody
Other business activities (Item 6.A)
- Broker-dealer
- Insurance broker or agent
Financial industry affiliations (Item 7.A)
- Broker-dealer
- Other investment adviser
- Banking or thrift institution
- Insurance company or agency
Custody (Item 9)
The firm reported no custody of client cash or securities.
Investment adviser representatives
- IARs registered with the firm
- 161
- Also registered through a broker-dealer
- 161
- Employees who are IARs (Form ADV 5.B(3))
- 107
Designations held by the firm's IARs: CFP 7, CFA 2, ChFC 2.
Between 39 and 67 of the firm's 161 IARs are registered in jurisdictions that require IAR CE. The source counts registrations by jurisdiction, and many IARs are registered in more than one, so the exact number is not knowable from it. IAR CE requirements by state.
Counts only. AdvisorIQ does not list individual people.
Disclosures
On Form ADV Item 11 the firm answered yes to 11 disclosure questions. See the detail on IAPD.
Succession and acquired firms
On Form ADV Item 4 the firm did not report succeeding to another adviser's business.
Similar-sized firms in Massachusetts
| Firm | City | RAUM |
|---|---|---|
| Flagship Harbor Advisors, LLC | Boston | $3.4 billion |
| Northeast Investment Management Inc | Boston | $3.3 billion |
| Winthrop Wealth | Boston | $3.1 billion |
| SVB Wealth | Boston | $3.1 billion |
| Birch Hill Investment Advisors LLC | Boston | $2.9 billion |
The five wealth firms, broker-dealer affiliated firms included, nearest in regulatory assets with a main office in the same state.
Elsewhere
- Santander Securities on IAPD: Form ADV, brochures and disclosure detail.
- Firm website: www.santanderbank.com/personal/investing
- Wealth management firms in Massachusetts
Firm data as of October 2, 2026, from ia100226.zip. Figures are as the firm reported them; corrections are made on Form ADV and appear after the next monthly reload.
Data as of October 2, 2026, from Form ADV. Sources: SEC registered adviser data (ia100226.zip) and IAPD compilation reports. How the directory is built.