# Big Sioux Wealth Management

> Big Sioux Wealth Management is an SEC-registered investment advisory firm in Watertown, SD, registered since 2020, reporting $100 million to $500 million in regulatory assets under management in its Form ADV filing dated February 27, 2026.

- CRD: 299593
- Filed as: BIG SIOUX WEALTH MANAGEMENT
- Legal name: Big Sioux Financial, Inc.
- Registration: SEC-registered investment adviser (status as filed: Approved)
- Location: Watertown, SD
- Filing period: October 2026
- Form ADV filing dated: February 27, 2026
- SEC record (IAPD): https://adviserinfo.sec.gov/firm/summary/299593
- AdvisorCensus page: https://advisorcensus.com/firm/big-sioux-wealth-management-watertown-sd-299593

## Quick answers

**How is Big Sioux Wealth Management compensated?**
On its Form ADV (Item 5.E, October 2026), Big Sioux Wealth Management reports these compensation arrangements: a percentage of assets under its management; hourly charges.

**Where is Big Sioux Wealth Management located?**
Big Sioux Wealth Management's principal office is in Watertown, SD, according to its Form ADV; the March 2026 filing also lists 1 other office (Schedule D, Section 1.F).

**Is Big Sioux Wealth Management registered with the SEC or a state?**
Big Sioux Wealth Management is an SEC-registered investment advisory firm, registered since 2020. Status as filed: Approved. CRD 299593.

**How much does Big Sioux Wealth Management manage?**
Big Sioux Wealth Management reports $235,177,047 in regulatory assets under management in its Form ADV filing dated February 27, 2026 (97% discretionary).

**How have Big Sioux Wealth Management's assets and staff changed since 2021?**
In the Form ADV data for Big Sioux Wealth Management: Regulatory assets under management: $131,848,333 in the October 2021 data and $235,177,047 in the October 2026 data, up 78%. Total employees: 2 in October 2021 and 7 in October 2026. Assets under management move with markets as well as with clients coming and going.

**What types of clients does Big Sioux Wealth Management serve?**
By number of clients on Form ADV Item 5.D: individuals (other than high net worth individuals) (597); high net worth individuals (246); charitable organizations (15).

**Which custodians does Big Sioux Wealth Management use?**
Big Sioux Wealth Management's most recent Form ADV filing (Schedule D, Section 5.K(3)) lists Charles Schwab & Co., Inc. as a custodian holding 10% or more of its separately managed account assets.

**Does Big Sioux Wealth Management report any disciplinary disclosures?**
Reports no disclosure items on Form ADV Item 11. The detail of any item is on the firm's SEC record: https://adviserinfo.sec.gov/firm/summary/299593

**Does Big Sioux Wealth Management state an account minimum?**
Its Form ADV Part 2A brochure dated February 27, 2026 says: "In general, we require a minimum asset level of $ 100,000 to establish an investment advisory relationship. This minimum account size may be waived at the Firm’s discretion."

**What changed in Big Sioux Wealth Management's recent Form ADV filings?**
In the March 2026 filing data: Employees performing advisory functions went from 3 to 5. Regulatory assets under management went from $200,749,508 to $235,177,047 (+17%). Updated its list of owners and control persons (Schedule A).

## From the Form ADV filing

### Compensation (Item 5.E)
- A percentage of assets under your management
- Hourly charges

### Fees and minimums (Form ADV Part 2A brochure dated February 27, 2026)

- Account minimum: $100,000 (the brochure says it may be waived or negotiated)

> In general, we require a minimum asset level of $ 100,000 to establish an investment advisory relationship. This minimum account size may be waived at the Firm’s discretion.

As stated in the firm's brochure. Fees can differ by service and may be negotiable.

### Custodians (Schedule D, Section 5.K(3))
- Charles Schwab & Co., Inc.

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.

### Regulatory assets under management (Item 5.F)
- Total: $235,177,047
- Discretionary: $228,162,927
- Non-discretionary: $7,014,120

### Clients (Item 5.D)

| Client type | Clients | Assets |
| --- | --- | --- |
| Individuals (other than high net worth individuals) | 597 | $61,114,522 |
| High net worth individuals | 246 | $167,903,807 |
| Banking or thrift institutions | 0 | $0 |
| Investment companies | 0 | $0 |
| Business development companies | 0 | $0 |
| Pooled investment vehicles (other than investment companies and business development companies) | 0 | $0 |
| Pension and profit sharing plans (but not the plan participants or government pension plans) | 0 | $0 |
| Charitable organizations | 15 | $2,000,452 |
| State or municipal government entities (including government pension plans) | 0 | $0 |
| Other investment advisers | 0 | $0 |
| Insurance companies | 0 | $0 |
| Sovereign wealth funds and foreign official institutions | 0 | $0 |
| Corporations or other businesses not listed above | 10 | $4,158,266 |

### Advisory services (Item 5.G)
- Financial planning services
- Portfolio management for individuals and/or small businesses
- Pension consulting services
- Selection of other advisers (including private fund managers)
- Educational seminars/workshops

### Firm details
- Registered since: 2020 (6 years)
- Employees: 7 total, 5 performing advisory functions
- Wrap fee program participation: No
- States registered or notice-filed: AZ, FL, IA, MN, ND, SD, TX
- Disclosures (Item 11): Reports no disclosure items on Form ADV Item 11.

### Other offices (Schedule D, Section 1.F), as of the March 2026 filing
- Sioux Falls, SD

### Websites listed on Form ADV (Item 1.I)
- bigsiouxwealth.com

## Assets and staff over time

| Data period | Regulatory assets under management | Employees | Filing dated |
| --- | --- | --- | --- |
| October 2021 | $131,848,333 | 2 | March 24, 2021 |
| October 2022 | $164,714,880 | 2 | February 14, 2022 |
| October 2023 | $189,305,897 | 3 | September 13, 2023 |
| October 2024 | $187,790,035 | 3 | January 31, 2024 |
| October 2025 | $200,749,508 | 6 | April 16, 2025 |
| October 2026 | $235,177,047 | 7 | February 27, 2026 |

Regulatory assets under management: $131,848,333 in the October 2021 data and $235,177,047 in the October 2026 data, up 78%.
Total employees: 2 in October 2021 and 7 in October 2026.

## Changes in the filing (last 12 months)

### March 2026
- Employees performing advisory functions went from 3 to 5.
- Regulatory assets under management went from $200,749,508 to $235,177,047 (+17%).
- Updated its list of owners and control persons (Schedule A).

### February 2026
- Registered or notice-filed in IA.

## Source

Form ADV as filed, October 2026. Values appear as filed. Cite as: AdvisorCensus. Big Sioux Wealth Management (CRD 299593): Form ADV filing data as of October 2026.