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SANTANDER SECURITIES
Legal name: SANTANDER SECURITIES LLC
CRD 41791File 801-56796
APPROVED
Retail clients
Disclosure events
Filing as of Sep 17, 2026
Feed vintage Oct 1, 2026
Regulatory AUM
$3.14B
Top 25% of cohort (national)
Discretionary AUM
$3.14B
Clients
10,875
11,152 accounts
Employees
449
Above cohort median in MA
Identity & registration
ADV Item 1- Organization form
- Limited Liability Company
- Firm type
- Registered
- SEC region
- BRO
- Registration date
- Sep 2, 1999
- Principal office
- 75 STATE STREET, MAIL CODE: MA-SST-INV3, BOSTON, MA, 02109
- Phone
- 866-736-6475
Assets & accounts
ADV Item 5F- Total regulatory AUM
- $3.14B
- Discretionary AUM
- $3.14B
- Non-discretionary AUM
- $0
- Discretionary accounts
- 11,152
- Non-discretionary accounts
- 0
- Total accounts
- 11,152
- AUM per client
- $289K
Clients by type
ADV Item 5D| Client type | Clients | AUM |
|---|---|---|
| Other | 41 | $42.4M |
| Charitable organizations | 2 | $1.0M |
| Individuals (other than high net worth individuals) | 10,832 | $2.85B |
Compensation & activities
ADV Items 5E, 5GCompensation
- A percentage of assets under your management
Advisory activities
- Other advisory activities
- Financial planning services
- Selection of other advisers
- Portfolio management for individuals and/or small businesses
Custody
ADV Item 9- Firm Custody Cash
- No
- Firm Custody Assets
- No
- Firm Custody Clients
- No
- Firm Custody Securities
- No
- Related Person Custody Cash
- No
- Related Person Custody Assets
- No
- Related Person Custody Clients
- No
- Related Person Custody Securities
- No
Disclosure events
ADV Item 11- Q11
- Q11G
- Q11A2
- Q11C1
- Q11C2
- Q11C4
- Q11C5
- Q11D1
- Q11D2
- Q11D4
- Q11E2
- Q11H2
Filed changes
| Date | Field | From | To | Change |
|---|---|---|---|---|
| Aug 17, 2026 | Clients | 11,124 | 10,875 | decreased by249 |
| May 1, 2026 | Custody | Yes | No | |
| Apr 1, 2026 | Employees | 440 | 449 | increased by9 |
| Apr 1, 2026 | Custody | No | Yes | |
| Apr 1, 2026 | Clients | 10,401 | 11,124 | increased by723 |
| Apr 1, 2026 | AUM | $2,553,311,017 | $3,140,983,898 | increased by$587,672,881 |
| Apr 1, 2026 | Accounts | 10,401 | 11,152 | increased by751 |
| May 1, 2025 vs Oct 1, 2022 | Employees | 599 | 440 | decreased by159 |
| May 1, 2025 vs Oct 1, 2022 | Clients | 10,085 | 10,401 | increased by316 |
| May 1, 2025 vs Oct 1, 2022 | AUM | $2,245,567,681 | $2,553,311,017 | increased by$307,743,336 |
| May 1, 2025 vs Oct 1, 2022 | Accounts | 10,085 | 10,401 | increased by316 |
| Apr 1, 2022 | Employees | 767 | 599 | decreased by168 |
| Apr 1, 2022 | Clients | 8,590 | 10,085 | increased by1,495 |
| Apr 1, 2022 | AUM | $1,709,547,962 | $2,245,567,681 | increased by$536,019,719 |
| Apr 1, 2022 | Accounts | 8,590 | 10,085 | increased by1,495 |
On Form 5500, an adviser usually appears as a plan service provider (Schedule C), not the plan sponsor.
See plans that list “SANTANDER SECURITIES” as a service provider on 5500mcp →Matched by name only — Form ADV and Form 5500 share no identifier, and names are searched loosely (“SANTANDER SECURITIES” may also match similarly-named firms). Confirm identity against each filing.
Every value above is reproduced from this firm's Form ADV filing. Fields the firm left blank are shown as “Not reported” rather than filled in from other sources.