Great Plains Advisory Services Llc
- Regulatory AUM
- $61.4M
- Discretionary
- $61.4M
- Clients
- 174
- Avg AUM / client
- $353K
- Accounts
- 319
- Employees
- 2
Who they serve
| Client type | Clients | AUM | % of AUM |
|---|---|---|---|
| Individuals (non-high net worth) | 80 | $10.4M | 17.0% |
| High net worth individuals | 92 | $50.5M | 82.3% |
| Charitable organizations | 2 | $463K | 0.75% |
People (2)
roster as of Jul 20, 2026| Name | Role / title | Credentials | With firm since | Ownership |
|---|---|---|---|---|
| Jeffrey Charles Wallgren | Registered representative | Jul 2024 (2y) | ||
| Richard William Engen | Registered representative | Chartered Financial Consultant | Jul 2024 (2y) |
Roster from the IAPD representatives feed; ownership and acquisition dates from Form ADV Schedule A/B. "Since" is the earliest filed registration or acquisition date.
Documents (1 archived)
| Form | Period | Size | |
|---|---|---|---|
| Form ADV (full filing) | 02/25/2026 | 1.28 MB | View · PDF · Source ↗ |
Archived copies of the firm's regulatory filings, versioned by content hash.
Disciplinary disclosures
This firm answered "yes" to a disciplinary item on its latest filing. Detailed disclosure pages for this filing have not been imported yet — see the source filing below.
How they charge
- • Percentage of assets under management
- • Hourly charges
- • Fixed fees
Services
- • Portfolio management for individuals/small businesses
- • Other services
Custody
Reported custodians
- Charles Schwab & Co. $61.4M (100% of AUM) Feb 2026
Amounts as reported in ADV Item 5.K.(3) (custodians holding 10%+ of SMA assets).
Firm reports having custody of client funds or securities (Item 9.A).
Source
All data on this page comes from this firm's Form ADV filings, reproduced without modification. Latest filing: Feb 25, 2026.
View current Form ADV (SEC/IAPD) ↗