FIRST BUSINESS FINANCIAL SER (FBIZ) Top Institutional Shareholders
FIRST BUSINESS FINANCIAL SER (FBIZ) is currently reported in institutional portfolios tracked by InsiderSet based on the latest available SEC Form 13F filings for the quarter ended March 31, 2026. The institutional investors covered on this page collectively reported approximately $296.70M in FBIZ holdings during the latest filing period.
Blackrock, Inc. is currently the largest disclosed institutional shareholder of FBIZ tracked by InsiderSet, reporting ownership valued at approximately $46.93M in its March 31, 2026 SEC Form 13F filing. Based on current market prices and the latest disclosed share count, the position is now estimated to be worth approximately $51.79M, representing an estimated gain of +10.35% since the filing period.
The top 10 institutional shareholders tracked on this page collectively account for approximately 59% of the total disclosed FBIZ value among the investors covered in this analysis. Major shareholders include Blackrock, Inc., Dimensional Fund Advisors Lp, First Business Financial Services, Inc., and several other long-term asset managers with concentrated positions in FIRST BUSINESS FINANCIAL SER (FBIZ).
This page ranks the largest institutional FBIZ shareholders using publicly disclosed SEC Form 13F data, including reported values, estimated current holding values, portfolio allocation percentages, ownership concentration metrics, and historical holding changes across major hedge funds and investment firms.
Institutional Holders
141
Total Reported Value
$296.70M
Largest Holder
Blackrock, Inc.
Largest Position
$46.93M
Insider Transactions (90d)
0
Latest Filing Quarter
Q1 2026
New Institutional Positions
154
Funds Exiting Positions
0
| Name | Investor/Manager | Portfolio % | Quantity | Reported Balance | Current Estimated Value | Gain/loss Since Filing | Estimated Portfolio Performance |
|---|---|---|---|---|---|---|---|
| Blackrock, Inc. | 0.00% | 870,202 | $46,929,995 | $51,785,721 | +$4,855,726 | +10.35% | |
| Dimensional Fund Advisors Lp | 0.01% | 499,716 | $26,950,059 | $29,738,099 | +$2,788,040 | +10.35% | |
| First Business Financial Services, Inc. | 1.73% | 361,311 | $19,485,502 | $21,501,618 | +$2,016,116 | +10.35% | |
| Vanguard Capital Management Llc | 0.00% | 340,538 | $18,365,214 | $20,265,416 | +$1,900,202 | +10.35% | |
| Manufacturers Life Insurance Company, The | 0.01% | 244,795 | $13,201,794 | $14,567,750 | +$1,365,956 | +10.35% | |
| American Century Companies Inc | 0.01% | 240,137 | $12,950,588 | $14,290,553 | +$1,339,965 | +10.35% | |
| Geode Capital Management, Llc | 0.00% | 199,772 | $10,775,918 | $11,888,432 | +$1,112,514 | +10.32% | |
| State Street Corp | 0.00% | 173,718 | $9,368,612 | $10,337,958 | +$969,346 | +10.35% | |
| Banc Funds Co Llc | 1.67% | 166,224 | $8,964,460 | $9,891,990 | +$927,530 | +10.35% | |
| Cutler Capital Management, Llc | 2.30% | 154,590 | $8,337,063 | $9,199,651 | +$862,588 | +10.35% | |
| Pacific Ridge Capital Partners, Llc | 1.65% | 140,892 | $7,598,306 | $8,384,483 | +$786,177 | +10.35% | |
| Renaissance Technologies LLC | Jim Simons | 0.01% | 122,465 | $6,604,537 | $7,287,892 | +$683,355 | +10.35% |
| Federated Hermes, Inc. | 0.01% | 116,133 | $6,263,053 | $6,911,075 | +$648,022 | +10.35% | |
| De Lisle Partners Llp | 0.64% | 98,812 | $5,339,261 | $5,880,302 | +$541,041 | +10.13% | |
| Aqr Capital Management Llc | 0.00% | 94,627 | $5,103,244 | $5,631,253 | +$528,009 | +10.35% | |
| Vanguard Portfolio Management Llc | 0.00% | 92,269 | $4,976,067 | $5,490,928 | +$514,861 | +10.35% | |
| Hillsdale Investment Management Inc. | 0.12% | 83,071 | $4,480,020 | $4,943,555 | +$463,535 | +10.35% | |
| Northern Trust Corp | 0.00% | 79,473 | $4,285,979 | $4,729,438 | +$443,459 | +10.35% | |
| Bridgeway Capital Management, Llc | 0.08% | 77,382 | $4,173,211 | $4,605,003 | +$431,792 | +10.35% | |
| Morgan Stanley | 0.00% | 75,719 | $4,083,595 | $4,506,038 | +$422,443 | +10.34% | |
| Qube Research & Technologies Ltd | 0.00% | 60,458 | $3,260,500 | $3,597,856 | +$337,356 | +10.35% | |
| Alliancebernstein L.P. | 0.00% | 58,984 | $3,202,831 | $3,510,138 | +$307,307 | +9.59% | |
| Goldman Sachs Group Inc | 0.00% | 55,399 | $2,987,668 | $3,296,794 | +$309,126 | +10.35% | |
| Vista Investment Management | 0.95% | 52,770 | $2,845,889 | $3,140,343 | +$294,454 | +10.35% | |
| Vanguard Fiduciary Trust Co | 0.00% | 51,693 | $2,787,803 | $3,076,250 | +$288,447 | +10.35% | |
| Ameriprise Financial Inc | 0.00% | 48,457 | $2,613,286 | $2,883,676 | +$270,390 | +10.35% | |
| Rosenthal {-} Henry Capital Advisors, Inc. | 2.37% | 45,000 | $2,426,850 | $2,677,950 | +$251,100 | +10.35% | |
| Empowered Funds, Llc | 0.01% | 41,982 | $2,264,089 | $2,498,349 | +$234,260 | +10.35% | |
| Uncommon Cents Investing Llc | 0.43% | 34,003 | $1,833,782 | $2,023,519 | +$189,737 | +10.35% | |
| Millennium Management Llc | 0.00% | 33,175 | $1,789,128 | $1,974,244 | +$185,116 | +10.35% | |
| Two Sigma Investments, Lp | 0.00% | 31,696 | $1,709,365 | $1,886,229 | +$176,864 | +10.35% | |
| Daytona Street Capital Llc | 1.32% | 30,790 | $1,708,383 | $1,832,313 | +$123,930 | +7.25% | |
| Royal Bank Of Canada | 0.00% | 31,022 | $1,673,000 | $1,846,119 | +$173,119 | +10.35% | |
| Bank Of New York Mellon Corp | 0.00% | 30,809 | $1,661,528 | $1,833,444 | +$171,916 | +10.35% | |
| First Trust Advisors Lp | 0.00% | 29,413 | $1,586,243 | $1,750,368 | +$164,125 | +10.35% | |
| Poehling Capital Management, Inc. | 0.29% | 25,615 | $1,381,417 | $1,524,349 | +$142,932 | +10.35% | |
| Kennedy Capital Management Llc | 0.03% | 25,277 | $1,363,189 | $1,504,234 | +$141,045 | +10.35% | |
| Gator Capital Management, Llc | 0.29% | 24,815 | $1,338,273 | $1,476,741 | +$138,468 | +10.35% | |
| Bank Of America Corp | 0.00% | 24,024 | $1,295,614 | $1,429,668 | +$134,054 | +10.35% | |
| Stifel Financial Corp | 0.00% | 23,190 | $1,250,633 | $1,380,037 | +$129,404 | +10.35% | |
| Charles Schwab Investment Management Inc | 0.00% | 22,373 | $1,206,576 | $1,331,417 | +$124,841 | +10.35% | |
| Baird Financial Group, Inc. | 0.00% | 21,240 | $1,145,473 | $1,263,992 | +$118,519 | +10.35% | |
| Nuveen, Llc | 0.00% | 19,520 | $1,052,713 | $1,161,635 | +$108,922 | +10.35% | |
| Us Bancorp \De\ | 0.00% | 17,884 | $964,484 | $1,064,277 | +$99,793 | +10.35% | |
| Franklin Resources Inc | 0.00% | 17,867 | $963,568 | $1,063,265 | +$99,697 | +10.35% | |
| Barclays Plc | 0.00% | 17,680 | $953,481 | $1,052,137 | +$98,656 | +10.35% | |
| Lazard Asset Management Llc | 0.00% | 16,773 | $904,568 | $998,161 | +$93,593 | +10.35% | |
| Integrated Quantitative Investments Llc | 0.15% | 15,622 | $842,494 | $929,665 | +$87,171 | +10.35% | |
| Ubs Group Ag | 0.00% | 14,389 | $775,999 | $856,289 | +$80,290 | +10.35% | |
| Squarepoint Ops Llc | 0.00% | 14,380 | $775,513 | $855,754 | +$80,241 | +10.35% |
Frequently asked questions about FBIZ
Who owns the most FBIZ stock?
The largest holders of FBIZ are typically major institutional investors such as asset managers and hedge funds reporting on Form 13F. The table above ranks tracked superinvestors by reported position size using the latest available filings for FIRST BUSINESS FINANCIAL SER (FBIZ).
Is FBIZ widely held by superinvestors?
Many widely followed stocks like FBIZ appear across numerous superinvestor portfolios because of liquidity, index inclusion, and fundamentals. The holder count and table above show how broadly FBIZ is represented among the institutional managers we track.
What do “Current Estimated Value”, “Gain/loss Since Filing”, and “Estimated Portfolio Performance” mean?
Current Estimated Value is reported share quantity from the latest 13F times our most recent split-adjusted U.S. session close. Gain/loss Since Filing is that estimate minus the reported 13F dollar value; Estimated Portfolio Performance is that difference as a percent of the reported value. Green means the estimate is above the filing value; red means below (not purchase cost). If many filers share the same implied filing price per share, the performance % may match across rows. These are not official fund marks or live quotes.