FIRST BUSINESS FINANCIAL SERVICES, INC. FBIZ
CIK 0001521951 · CUSIP 319390100
Quarter-end disclosures, not live holdings.
Top 20 institutions
Weight means this stock's share of the manager's own portfolio.
| # | Manager | Value | Manager weight | Change vs prior | Source | |
|---|---|---|---|---|---|---|
| 01 | BlackRock, Inc. CIK 2012383 · View history | $45.23M 882,267 shares | 0.00% | -64.50K(-6.80%)Reduced | SEC filing ↗ Nov 12, 2025 | ▾ |
| 02 | DIMENSIONAL FUND ADVISORS LP CIK 354204 · View history | $25.92M 505,577 shares | 0.01% | -3.81K(-0.70%)Reduced | SEC filing ↗ Nov 12, 2025 | ▾ |
| 03 | VANGUARD GROUP INC CIK 102909 · View history | $24.69M 481,681 shares | 0.00% | +30.50K(+6.80%)Added | SEC filing ↗ Nov 7, 2025 | ▾ |
| 04 | First Business Financial Services, Inc. CIK 1521951 · View history | $19.18M 374,233 shares | 1.76% | -20.26K(-5.10%)Reduced | SEC filing ↗ Oct 30, 2025 | ▾ |
| 05 | MANUFACTURERS LIFE INSURANCE COMPANY, THE CIK 928047 · View history | $13.06M 254,821 shares | 0.01% | -5.27K(-2.00%)Reduced | SEC filing ↗ Nov 14, 2025 | ▾ |
| 06 | GEODE CAPITAL MANAGEMENT, LLC CIK 1214717 · View history | $11.73M 228,703 shares | 0.00% | +43.34K(+23.40%)Added | SEC filing ↗ Nov 12, 2025 | ▾ |
| 07 | AMERICAN CENTURY COMPANIES INC CIK 748054 · View history | $10.16M 198,245 shares | 0.01% | +26.75K(+15.60%)Added | SEC filing ↗ Nov 12, 2025 | ▾ |
| 08 | BANC FUNDS CO LLC CIK 1029311 · View history | $9.92M 193,524 shares | 1.73% | -70.95K(-26.80%)Reduced | SEC filing ↗ Nov 14, 2025 | ▾ |
| 09 | STATE STREET CORP CIK 93751 · View history | $8.15M 158,961 shares | 0.00% | +3.25K(+2.10%)Added | SEC filing ↗ Nov 14, 2025 | ▾ |
| 10 | Cutler Capital Management, LLC CIK 1353098 · View history | $7.97M 155,493 shares | 2.55% | -306(-0.20%)Reduced | SEC filing ↗ Nov 14, 2025 | ▾ |
| 11 | Pacific Ridge Capital Partners, LLC CIK 1591546 · View history | $7.41M 144,623 shares | 1.63% | -3.32K(-2.20%)Reduced | SEC filing ↗ Nov 12, 2025 | ▾ |
| 12 | RENAISSANCE TECHNOLOGIES LLC CIK 1037389 · View history | $7.26M 141,565 shares | 0.01% | -9.10K(-6.00%)Reduced | SEC filing ↗ Nov 13, 2025 | ▾ |
| 13 | LSV ASSET MANAGEMENT CIK 1050470 · View history | $6.38M 124,389 shares | 0.01% | +38.36K(+44.60%)Added | SEC filing ↗ Nov 6, 2025 | ▾ |
| 14 | De Lisle Partners LLP CIK 2011184 · View history | $4.80M 93,640 shares | 0.59% | +5.00K(+5.60%)Added | SEC filing ↗ Nov 13, 2025 | ▾ |
| 15 | Hillsdale Investment Management Inc. CIK 1368465 · View history | $4.30M 83,971 shares | 0.13% | -20.10K(-19.30%)Reduced | SEC filing ↗ Nov 10, 2025 | ▾ |
| 16 | AQR CAPITAL MANAGEMENT LLC CIK 1167557 · View history | $4.29M 83,617 shares | 0.00% | +58.97K(+239.30%)Added | SEC filing ↗ Nov 14, 2025 | ▾ |
| 17 | NORTHERN TRUST CORP CIK 73124 · View history | $4.25M 82,993 shares | 0.00% | +2.73K(+3.40%)Added | SEC filing ↗ Nov 14, 2025 | ▾ |
| 18 | BRIDGEWAY CAPITAL MANAGEMENT, LLC CIK 1107261 · View history | $3.69M 72,061 shares | 0.08% | -9.84K(-12.00%)Reduced | SEC filing ↗ Nov 14, 2025 | ▾ |
| 19 | FEDERATED HERMES, INC. CIK 1056288 · View history | $3.68M 71,865 shares | 0.01% | +611(+0.90%)Added | SEC filing ↗ Nov 3, 2025 | ▾ |
| 20 | ALLIANCEBERNSTEIN L.P. CIK 1109448 · View history | $3.66M 71,334 shares | 0.00% | -500(-0.70%)Reduced | SEC filing ↗ Nov 14, 2025 | ▾ |
Showing 20 / 136 institutions. The complete set is available through the API.
Coverage & totals by quarter
Reporting institutions by quarter
Counts also change with data coverage and reporting entities; they do not measure net buying. Distinct managers with a live stock row in this CUSIP; totals may include overlapping filings and are not a share of the company.
Explore all 136 reporting institutions.
This page includes 20 of 136 reporting institutions. Log in to look up the full history beyond 3 years, use advanced screening & filtering, download CSV, and get the complete set through the Akkru API.
- Download CSV
- Earlier quarters
- Advanced screening & filtering
- API & AI access
＋ New accounts get free API credits to explore data beyond ownership filings.
For AI agents & developers
The initial HTML of this page carries its exact data as script#research-data (JSON): values, units, scope, preview limits and SEC sources. Read it directly, no script or API key needed; script#research-access says what needs an account. This page lists 20 of 136 reporting institutions; totals use the complete disclosed data.
Without an account: the last 3 years, with the row caps stated on the page. A free account opens all history on file on these pages and the CSV of what a page shows. Rows beyond the caps and bulk retrieval go through the authenticated API / MCP / CLI.
MCP https://api.akkrudata.ai/mcp
akkru_institutional_holdings
{"action":"holders","cusip":"319390100","quarter":"2025Q3","type":"positions","page_size":100}Connect to MCP with OAuth and follow the returned pagination. Credits and usage limits depend on the account.
- MCP endpoint
- https://api.akkrudata.ai/mcp
- API / MCP / CLI documentation
- /documents
- llms.txt
- /llms.txt
Sources, coverage & how to read this data
Figures are as reported to the SEC and merged with later amendments where Akkru could match them. Preview limits apply to what is listed, not to the totals, which come from the complete reported data. Nothing is zero-filled: a missing quarter or month is shown as missing.