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BIG SIOUX WEALTH MANAGEMENT
Legal name: BIG SIOUX FINANCIAL, INC.
CRD 299593File 801-118350
APPROVED
Retail clients
Filing as of Feb 27, 2026
Feed vintage Oct 1, 2026
Regulatory AUM
$235.2M
Below cohort median (national)
Discretionary AUM
$228.2M
Non-discretionary $7.0M
Clients
868
1,957 accounts
Employees
7
Above cohort median in SD
Identity & registration
ADV Item 1- Organization form
- Corporation
- Firm type
- Registered
- SEC region
- DRO
- Registration date
- Mar 30, 2020
- Principal office
- 1401 4TH ST NE, WATERTOWN, SD, 57201
- Phone
- 605-882-4280
Assets & accounts
ADV Item 5F- Total regulatory AUM
- $235.2M
- Discretionary AUM
- $228.2M
- Non-discretionary AUM
- $7.0M
- Discretionary accounts
- 1,930
- Non-discretionary accounts
- 27
- Total accounts
- 1,957
- AUM per client
- $271K
Clients by type
ADV Item 5D| Client type | Clients | AUM |
|---|---|---|
| Other | 10 | $4.2M |
| Charitable organizations | 15 | $2.0M |
| High net worth individuals | 246 | $167.9M |
| Individuals (other than high net worth individuals) | 597 | $61.1M |
Compensation & activities
ADV Items 5E, 5GCompensation
- Hourly charges
- A percentage of assets under your management
Advisory activities
- Other
- Financial planning services
- Selection of other advisers
- Portfolio management for other
- 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 11This firm answered no to every Item 11 disclosure question in this filing.
Filed changes
| Date | Field | From | To | Change |
|---|---|---|---|---|
| Mar 1, 2026 | Employees | 6 | 7 | increased by1 |
| Mar 1, 2026 | Clients | 1,169 | 868 | decreased by301 |
| Mar 1, 2026 | AUM | $200,749,508 | $235,177,047 | increased by$34,427,539 |
| Mar 1, 2026 | Accounts | 2,036 | 1,957 | decreased by79 |
| May 1, 2025 vs Oct 1, 2022 | Employees | 2 | 6 | increased by4 |
| May 1, 2025 vs Oct 1, 2022 | Clients | 1,009 | 1,169 | increased by160 |
| May 1, 2025 vs Oct 1, 2022 | AUM | $164,714,880 | $200,749,508 | increased by$36,034,628 |
| May 1, 2025 vs Oct 1, 2022 | Accounts | 1,286 | 2,036 | increased by750 |
| Mar 1, 2022 | Clients | 833 | 1,009 | increased by176 |
| Mar 1, 2022 | AUM | $131,848,333 | $164,714,880 | increased by$32,866,547 |
| Mar 1, 2022 | Accounts | 1,174 | 1,286 | increased by112 |
| Apr 1, 2021 | Registration | — | APPROVED |
On Form 5500, an adviser usually appears as a plan service provider (Schedule C), not the plan sponsor.
See plans that list “BIG SIOUX” as a service provider on 5500mcp →Matched by name only — Form ADV and Form 5500 share no identifier, and names are searched loosely (“BIG SIOUX” 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.