FIRST BUSINESS FINANCIAL SER (FBIZ) 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 June 30, 2026. The institutional investors covered on this page collectively reported approximately $373.88M 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 $58.65M in its June 30, 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 $66.37M, representing an estimated gain of +13.17% since the filing period.
The top 10 institutional shareholders tracked on this page collectively account for approximately 57% of the total disclosed FBIZ value among the investors covered in this analysis. Major shareholders include Blackrock, Inc., Dimensional Fund Advisors Lp, Vanguard Capital Management Llc, 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
139
Total Reported Value
$373.88M
Largest Holder
Blackrock, Inc.
Largest Position
$58.65M
Insider Transactions (90d)
2
Latest Filing Quarter
Q2 2026
New Institutional Positions
103
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% | 928,380 | $58,645,765 | $66,369,886 | +$7,724,121 | +13.17% | |
| Dimensional Fund Advisors Lp | 0.01% | 498,430 | $31,485,980 | $35,632,761 | +$4,146,781 | +13.17% | |
| Vanguard Capital Management Llc | 0.00% | 343,482 | $21,697,758 | $24,555,528 | +$2,857,770 | +13.17% | |
| First Business Financial Services, Inc. | 1.67% | 340,189 | $21,489,739 | $24,320,112 | +$2,830,373 | +13.17% | |
| American Century Companies Inc | 0.01% | 272,788 | $17,232,018 | $19,501,614 | +$2,269,596 | +13.17% | |
| Manufacturers Life Insurance Company, The | 0.01% | 243,005 | $15,350,626 | $17,372,427 | +$2,021,801 | +13.17% | |
| Geode Capital Management, Llc | 0.00% | 214,987 | $13,583,502 | $15,369,421 | +$1,785,919 | +13.15% | |
| State Street Corp | 0.00% | 187,371 | $11,836,226 | $13,395,153 | +$1,558,927 | +13.17% | |
| Banc Funds Co Llc | 1.70% | 163,224 | $10,310,860 | $11,668,884 | +$1,358,024 | +13.17% | |
| Cutler Capital Management, Llc | 2.53% | 154,346 | $9,750,014 | $11,034,196 | +$1,284,182 | +13.17% | |
| Lsv Asset Management | 0.02% | 141,025 | $8,909,000 | $10,081,877 | +$1,172,877 | +13.17% | |
| Pacific Ridge Capital Partners, Llc | 1.60% | 139,808 | $8,831,671 | $9,994,874 | +$1,163,203 | +13.17% | |
| Aqr Capital Management Llc | 0.00% | 128,927 | $8,144,342 | $9,216,991 | +$1,072,649 | +13.17% | |
| Federated Hermes, Inc. | 0.01% | 125,563 | $7,931,815 | $8,976,499 | +$1,044,684 | +13.17% | |
| Renaissance Technologies LLC | Jim Simons | 0.01% | 120,865 | $7,635,042 | $8,640,639 | +$1,005,597 | +13.17% |
| Vanguard Portfolio Management Llc | 0.00% | 101,542 | $6,414,408 | $7,259,238 | +$844,830 | +13.17% | |
| De Lisle Partners Llp | 0.68% | 98,812 | $6,258,389 | $7,064,070 | +$805,681 | +12.87% | |
| Hillsdale Investment Management Inc. | 0.13% | 91,671 | $5,790,857 | $6,553,560 | +$762,703 | +13.17% | |
| Northern Trust Corp | 0.00% | 83,399 | $5,268,314 | $5,962,195 | +$693,881 | +13.17% | |
| Bridgeway Capital Management, Llc | 0.09% | 80,557 | $5,088,786 | $5,759,020 | +$670,234 | +13.17% | |
| Morgan Stanley | 0.00% | 79,994 | $5,053,324 | $5,718,771 | +$665,447 | +13.17% | |
| Two Sigma Investments, Lp | 0.00% | 73,566 | $4,647,164 | $5,259,233 | +$612,069 | +13.17% | |
| Qube Research & Technologies Ltd | 0.00% | 61,517 | $3,886,029 | $4,397,850 | +$511,821 | +13.17% | |
| Vanguard Fiduciary Trust Co | 0.00% | 54,400 | $3,436,448 | $3,889,056 | +$452,608 | +13.17% | |
| Acadian Asset Management Llc | 0.00% | 53,855 | $3,400,000 | $3,850,094 | +$450,094 | +13.24% | |
| Vista Investment Management | 1.00% | 52,349 | $3,306,889 | $3,742,430 | +$435,541 | +13.17% | |
| Ameriprise Financial Inc | 0.00% | 48,817 | $3,083,770 | $3,489,927 | +$406,157 | +13.17% | |
| Empowered Funds, Llc | 0.02% | 45,157 | $2,852,568 | $3,228,274 | +$375,706 | +13.17% | |
| Rosenthal {-} Henry Capital Advisors, Inc. | 2.49% | 45,000 | $2,842,650 | $3,217,050 | +$374,400 | +13.17% | |
| Goldman Sachs Group Inc | 0.00% | 42,680 | $2,696,095 | $3,051,193 | +$355,098 | +13.17% | |
| Alliancebernstein L.P. | 0.00% | 43,294 | $2,334,845 | $3,095,088 | +$760,243 | +32.56% | |
| Uncommon Cents Investing Llc | 0.46% | 33,878 | $2,140,073 | $2,421,938 | +$281,865 | +13.17% | |
| Bank Of New York Mellon Corp | 0.00% | 32,634 | $2,061,474 | $2,333,005 | +$271,531 | +13.17% | |
| Royal Bank Of Canada | 0.00% | 31,243 | $1,974,000 | $2,233,562 | +$259,562 | +13.15% | |
| First Trust Advisors Lp | 0.00% | 30,700 | $1,939,319 | $2,194,743 | +$255,424 | +13.17% | |
| Daytona Street Capital Llc | 1.37% | 29,623 | $1,875,210 | $2,117,748 | +$242,538 | +12.93% | |
| Squarepoint Ops Llc | 0.00% | 28,061 | $1,772,613 | $2,006,081 | +$233,468 | +13.17% | |
| Millennium Management Llc | 0.00% | 25,364 | $1,602,244 | $1,813,272 | +$211,028 | +13.17% | |
| Kennedy Capital Management Llc | 0.03% | 24,280 | $1,533,768 | $1,735,777 | +$202,009 | +13.17% | |
| Bank Of America Corp | 0.00% | 23,989 | $1,515,385 | $1,714,974 | +$199,589 | +13.17% | |
| Charles Schwab Investment Management Inc | 0.00% | 23,895 | $1,509,447 | $1,708,254 | +$198,807 | +13.17% | |
| Poehling Capital Management, Inc. | 0.32% | 23,848 | $1,506,478 | $1,704,894 | +$198,416 | +13.17% | |
| Stifel Financial Corp | 0.00% | 23,363 | $1,475,839 | $1,670,221 | +$194,382 | +13.17% | |
| Quantinno Capital Management Lp | 0.00% | 22,724 | $1,435,475 | $1,624,539 | +$189,064 | +13.17% | |
| Nuveen, Llc | 0.00% | 21,958 | $1,387,087 | $1,569,777 | +$182,690 | +13.17% | |
| Baird Financial Group, Inc. | 0.00% | 21,240 | $1,341,731 | $1,518,448 | +$176,717 | +13.17% | |
| Citadel Advisors Llc | 0.00% | 20,897 | $1,320,064 | $1,493,927 | +$173,863 | +13.17% | |
| Gsa Capital Partners Llp | 0.08% | 19,167 | $1,211,000 | $1,370,249 | +$159,249 | +13.15% | |
| Gator Capital Management, Llc | 0.24% | 17,835 | $1,126,637 | $1,275,024 | +$148,387 | +13.17% | |
| Barclays Plc | 0.00% | 17,247 | $1,089,492 | $1,232,988 | +$143,496 | +13.17% |
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.