FOSTER GROUP INC
Q4 2025 Form 13-F
WEST DES MOINES, IOWA
CIK 0001841544
· CRD 107148
· SEC-registered investment adviser
$3.3B Reported Value Total
FOSTER GROUP, INC. reports 7,346 total accounts under management (AUM). There are 6,514 discretionary accounts valued at $4,604,709,090, and 832 non-discretionary accounts valued at $170,805,714.
Source: Form ADV filed * Note that certain holdings are exempt from Form 13-F reporting, so the AUM totals may be greater than the Form 13-F total.
Source: Form ADV filed 2026-10-12
Reported value
$3.3B
Quarter over quarter
+2.3%
Holdings
300
Top-10 concentration
52.7%
Key People
Form ADV owners & control persons
Gregory John Olsen
CHIEF EXECUTIVE OFFICER, BOARD MEMBER
Mark Alan Stadtlander
OWNER
Brenton Lowell Carlson
LEAD ADVISOR, OWNER
Filing Navigation
13F Metrics
Loading 13F Metrics
Q4 2025 13F record
Q4 2025 13F filing summary
| Period of report | December 31, 2025 |
|---|---|
| Filed | January 12, 2026 |
| Form | 13F-HR |
| Reported value | $3.3B |
| Positions | 300 |
| Change in reported value | +3.8% |
| New positions | 43 |
| Exited positions | 11 |
| Position turnover | 17.4% |
| Top-10 concentration | 52.7% |
13F filings by quarter
| Quarter | Positions | Value |
|---|---|---|
|
Q3 2026 13F
Filed Oct 13, 2026
|
314 | $3.7B |
|
Q2 2026 13F
Filed Jul 7, 2026
|
318 | $3.8B |
|
Q1 2026 13F
Filed Apr 13, 2026
|
284 | $3.4B |
|
Q4 2025 13F
Filed Jan 12, 2026
|
300 | $3.3B |
|
Q3 2025 13F
Filed Oct 14, 2025
|
268 | $3.2B |
|
Q2 2025 13F
Filed Jul 14, 2025
|
264 | $2.9B |
|
Q1 2025 13F
Filed Apr 11, 2025
|
224 | $2.7B |
|
Q4 2024 13F
Filed Jan 23, 2025
|
198 | $2.6B |
|
Q3 2024 13F
Filed Oct 7, 2024
|
203 | $2.7B |
|
Q2 2024 13F
Filed Jul 30, 2024
|
196 | $2.5B |
|
Q1 2024 13F
Filed Apr 9, 2024
|
198 | $2.0B |
|
Q4 2023 13F
Filed Feb 1, 2024
|
168 | $1.6B |
|
Q3 2023 13F
Filed Oct 27, 2023
|
168 | $1.6B |
|
Q2 2023 13F
Filed Jul 10, 2023
|
171 | $1.7B |
|
Q1 2023 13F
Filed Apr 6, 2023
|
162 | $1.6B |
|
Q4 2022 13F
Filed Jan 24, 2023
|
146 | $1.3B |
|
Q3 2022 13F
Filed Oct 13, 2022
|
134 | $1.2B |
|
Q2 2022 13F
Filed Jul 25, 2022
|
140 | $1.4B |
|
Q1 2022 13F
Filed Apr 22, 2022
|
140 | $1.2B |
|
Q4 2021 13F
Filed Feb 2, 2022
|
140 | $1.2B |
4 earlier quarters on file — choose one from the quarter menu above.
Top 20 holdings · Q4 2025
| # | Holding | Reported value | % of portfolio |
|---|---|---|---|
| 1 | VTI VANGUARD INDEX FDS | $450.4M | 13.62% |
| 2 | VEA VANGUARD TAX-MANAGED FDS | $174.9M | 5.29% |
| 3 | BND VANGUARD BD INDEX FDS | $171.3M | 5.18% |
| 4 | DFIV DIMENSIONAL ETF TRUST | $154.8M | 4.68% |
| 5 | VGIT VANGUARD SCOTTSDALE FDS | $148.1M | 4.48% |
| 6 | QUAL ISHARES TR | $143.0M | 4.32% |
| 7 | DFLV DIMENSIONAL ETF TRUST | $141.7M | 4.28% |
| 8 | DFAE DIMENSIONAL ETF TRUST | $128.0M | 3.87% |
| 9 | VTV VANGUARD INDEX FDS | $116.9M | 3.53% |
| 10 | DUHP DIMENSIONAL ETF TRUST | $113.1M | 3.42% |
| 11 | IUSV ISHARES TR | $110.8M | 3.35% |
| 12 | MTUM ISHARES TR | $77.2M | 2.33% |
| 13 | AVUV AMERICAN CENTY ETF TR | $74.2M | 2.24% |
| 14 | DFUS DIMENSIONAL ETF TRUST | $71.5M | 2.16% |
| 15 | DFNM DIMENSIONAL ETF TRUST | $70.6M | 2.13% |
| 16 | IDEV ISHARES TR | $64.2M | 1.94% |
| 17 | IVV ISHARES TR | $63.5M | 1.92% |
| 18 | DFUV DIMENSIONAL ETF TRUST | $59.7M | 1.8% |
| 19 | DIHP DIMENSIONAL ETF TRUST | $53.7M | 1.62% |
| 20 | ICSH ISHARES TR | $53.1M | 1.6% |
Values as reported on the Q4 2025 Form 13F. Every position is in the holdings table below.