BY Institutional Ownership & Shareholders
BYLINE BANCORP INC (BY) is currently held by 211 institutional investors tracked by InsiderSet, with a combined reported market value of approximately $936.31M based on the latest available SEC Form 13F filings for the quarter ended June 30, 2026.
Blackrock, Inc. is currently the largest disclosed institutional shareholder of BY tracked by InsiderSet, reporting ownership valued at approximately $132.22M 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 $135.17M, representing an estimated gain of +2.23% since the filing period.
The top 10 institutional shareholders tracked on this page collectively account for approximately 57% of the total disclosed BY value among the investors covered in this analysis. Major shareholders include Blackrock, Inc., Dimensional Fund Advisors Lp, T. Rowe Price Investment Management, Inc., and several other long-term asset managers with concentrated positions in BYLINE BANCORP INC (BY).
This page ranks the largest institutional BY 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
211
Total Reported Value
$936.31M
Largest Holder
Blackrock, Inc.
Largest Position
$132.22M
Insider Transactions (90d)
9
Latest Filing Quarter
Q2 2026
New Institutional Positions
55
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% | 3,510,896 | $132,220,327 | $135,169,496 | +$2,949,169 | +2.23% | |
| Dimensional Fund Advisors Lp | 0.02% | 2,424,824 | $91,319,164 | $93,355,724 | +$2,036,560 | +2.23% | |
| T. Rowe Price Investment Management, Inc. | 0.04% | 1,495,588 | $56,324,000 | $57,580,138 | +$1,256,138 | +2.23% | |
| Vanguard Capital Management Llc | 0.00% | 1,191,625 | $44,876,598 | $45,877,563 | +$1,000,965 | +2.23% | |
| State Street Corp | 0.00% | 1,089,293 | $41,022,774 | $41,937,781 | +$915,007 | +2.23% | |
| American Century Companies Inc | 0.02% | 1,009,951 | $38,034,755 | $38,883,114 | +$848,359 | +2.23% | |
| Boston Partners | 0.03% | 883,689 | $33,198,565 | $34,022,027 | +$823,462 | +2.48% | |
| Federated Hermes, Inc. | 0.05% | 857,825 | $32,305,689 | $33,026,263 | +$720,574 | +2.23% | |
| Aqr Capital Management Llc | 0.01% | 813,855 | $30,649,796 | $31,333,418 | +$683,622 | +2.23% | |
| Geode Capital Management, Llc | 0.00% | 810,208 | $30,516,178 | $31,193,008 | +$676,830 | +2.22% | |
| Jpmorgan Chase & Co | 0.00% | 507,652 | $19,092,792 | $19,544,602 | +$451,810 | +2.37% | |
| Ararat Capital Management Lp | 8.65% | 490,609 | $18,476,335 | $18,888,447 | +$412,112 | +2.23% | |
| Wellington Management Group Llp | 0.00% | 488,460 | $18,395,403 | $18,805,710 | +$410,307 | +2.23% | |
| Nuveen, Llc | 0.00% | 437,302 | $16,468,794 | $16,836,127 | +$367,333 | +2.23% | |
| Bridgeway Capital Management, Llc | 0.28% | 424,253 | $15,977,368 | $16,333,741 | +$356,373 | +2.23% | |
| Vanguard Portfolio Management Llc | 0.00% | 362,683 | $13,658,642 | $13,963,296 | +$304,654 | +2.23% | |
| Two Sigma Investments, Lp | 0.01% | 350,081 | $13,184,050 | $13,478,119 | +$294,069 | +2.23% | |
| Morgan Stanley | 0.00% | 301,094 | $11,339,243 | $11,592,119 | +$252,876 | +2.23% | |
| Northern Trust Corp | 0.00% | 295,900 | $11,143,594 | $11,392,150 | +$248,556 | +2.23% | |
| Charles Schwab Investment Management Inc | 0.00% | 269,067 | $10,133,063 | $10,359,080 | +$226,017 | +2.23% | |
| Millennium Management Llc | 0.01% | 250,593 | $9,437,332 | $9,647,831 | +$210,499 | +2.23% | |
| Arrowstreet Capital, Limited Partnership | 0.00% | 245,280 | $9,237,245 | $9,443,280 | +$206,035 | +2.23% | |
| Endeavour Capital Advisors Inc | 1.84% | 238,671 | $8,988,350 | $9,188,834 | +$200,484 | +2.23% | |
| Qube Research & Technologies Ltd | 0.01% | 219,168 | $8,253,867 | $8,437,968 | +$184,101 | +2.23% | |
| Empowered Funds, Llc | 0.04% | 213,253 | $8,031,108 | $8,210,241 | +$179,133 | +2.23% | |
| Goldman Sachs Group Inc | 0.00% | 212,551 | $8,004,670 | $8,183,214 | +$178,544 | +2.23% | |
| Vanguard Fiduciary Trust Co | 0.00% | 210,966 | $7,944,980 | $8,122,191 | +$177,211 | +2.23% | |
| Denali Advisors Llc | 0.70% | 185,516 | $6,986,533 | $7,142,366 | +$155,833 | +2.23% | |
| Fmr Llc | 0.00% | 182,355 | $6,867,473 | $7,020,668 | +$153,195 | +2.23% | |
| Bank Of New York Mellon Corp | 0.00% | 167,130 | $6,294,104 | $6,434,505 | +$140,401 | +2.23% | |
| Detalus Advisors, Llc | 1.19% | 163,050 | $6,005,132 | $6,277,425 | +$272,293 | +4.53% | |
| Thrivent Financial For Lutherans | 0.01% | 157,091 | $5,916,000 | $6,048,004 | +$132,004 | +2.23% | |
| Bank Of America Corp | 0.00% | 151,407 | $5,701,987 | $5,829,170 | +$127,183 | +2.23% | |
| Curi Capital, Llc | 0.08% | 143,042 | $5,386,966 | $5,507,117 | +$120,151 | +2.23% | |
| Zacks Investment Management | 0.04% | 139,641 | $5,258,919 | $5,376,179 | +$117,260 | +2.23% | |
| Mariner, Llc | 0.01% | 137,192 | $5,166,647 | $5,281,892 | +$115,245 | +2.23% | |
| Bartlett & Co. Wealth Management Llc | 0.06% | 134,158 | $5,052,390 | $5,165,083 | +$112,693 | +2.23% | |
| Maltese Capital Management Llc | 0.89% | 130,000 | $4,895,800 | $5,005,000 | +$109,200 | +2.23% | |
| Mendon Capital Advisors Corp | 1.66% | 125,000 | $4,707,500 | $4,812,500 | +$105,000 | +2.23% | |
| First Trust Advisors Lp | 0.00% | 123,776 | $4,661,404 | $4,765,376 | +$103,972 | +2.23% | |
| Fiducient Advisors Llc | 0.60% | 110,850 | $4,174,611 | $4,267,725 | +$93,114 | +2.23% | |
| Jacobs Levy Equity Management, Inc | 0.01% | 106,896 | $4,025,703 | $4,115,496 | +$89,793 | +2.23% | |
| Trexquant Investment Lp | 0.02% | 98,544 | $3,711,167 | $3,793,944 | +$82,777 | +2.23% | |
| Ubs Group Ag | 0.00% | 96,743 | $3,643,342 | $3,724,606 | +$81,264 | +2.23% | |
| Point72 Asset Management, L.P. | 0.01% | 90,304 | $3,400,849 | $3,476,704 | +$75,855 | +2.23% | |
| Man Group Plc | 0.01% | 88,827 | $3,345,225 | $3,419,840 | +$74,615 | +2.23% | |
| Renaissance Technologies LLC | Jim Simons | 0.00% | 80,600 | $3,035,396 | $3,103,100 | +$67,704 | +2.23% |
| Blair William & Co/Il | 0.01% | 79,924 | $3,009,936 | $3,077,074 | +$67,138 | +2.23% | |
| Citadel Advisors Llc | 0.00% | 73,908 | $2,783,376 | $2,845,458 | +$62,082 | +2.23% | |
| Tudor Investment Corp Et Al | 0.01% | 68,297 | $2,572,065 | $2,629,435 | +$57,370 | +2.23% |
Frequently asked questions about BY
Who are the largest institutional holders of BY?
The largest institutional holders of BY reported in the latest SEC Form 13F filings include Blackrock, Inc., Dimensional Fund Advisors Lp, T. Rowe Price Investment Management, Inc., Vanguard Capital Management Llc, and State Street Corp. InsiderSet ranks institutional holders by their latest reported BY position.
What is BY institutional ownership?
This page tracks BY positions reported by institutional investment managers through SEC Form 13F. BYLINE BANCORP INC (BY) institutional ownership on InsiderSet reflects disclosed 13F holdings among the managers we analyze, not every shareholder of the stock.
How many institutions own BY?
InsiderSet currently tracks 211 institutional managers reporting BY holdings in the latest available 13F data. This count reflects institutions included in the SEC Form 13F filings analyzed by InsiderSet and should not be interpreted as the total number of BY shareholders.
How much BY stock do institutions own?
Institutional investment managers disclosed approximately $936.31M in BY holdings for Q2 2026. This figure is reported 13F value as of the filing period, not necessarily today's market value.
When was BY institutional ownership last updated?
The latest BY institutional ownership data on InsiderSet is based on SEC Form 13F filings for the quarter ended June 30, 2026. Form 13F filings are generally reported after the quarter ends, so the holdings shown represent the latest publicly disclosed positions rather than real-time institutional holdings.
Are institutional BY holdings real-time?
No. Form 13F data is not real-time. It represents positions reported by institutional investment managers as of the end of the reporting quarter. An institution may have changed its BY position after the reporting date.
Are institutions buying or selling BY?
Institutional buying and selling can be analyzed by comparing BY positions across consecutive 13F reporting periods. InsiderSet's BY Ownership Changes page shows institutions that increased, reduced, initiated, or exited positions based on reported 13F holdings. View BY ownership changes.
How has BY institutional ownership changed over time?
InsiderSet tracks BY institutional holdings across multiple 13F reporting periods, allowing investors to compare institutional holder counts, reported value, and reported shares over time.