Byline Bancorp BY Institutional Ownership

NYSE BY

$37.42 -0.20 (-0.53%)

As of: Oct 21, 2026 · 3:59 PM EDT

Institutions by Trading Activity

205 Institutions

Increased 113 55.1%

Unchanged 36 17.6%

Reduced 56 27.3%

Ownership Statistics

13F · as of 30 Jun, 2026

Institutional Ownership

55.15%

▲+0.07 pp QoQ

Shares Held by Institutions

24.92Mn

of 45.19Mn outstanding

▼-0.43% QoQ

Shares Outstanding

45.19Mn

20.27Mn held outside 13F filers

Institutional Investors

205

filed 13F for Jun 2026

▲+17 vs prior quarter

Net Shares Added (QoQ)

-107.50K

distributed since last quarter

Value of Holdings

$937.59Mn

reported market value

Shares Owned by Institutions

Shares held % of outstanding

Latest —

Average ownership —

Peak ownership —

Shares Purchased/Sold by Institutions

Accumulated Distributed

Latest quarter —

Net over range —

Accumulating quarters —

Ownership Summary

Updated Oct 11, 2026

Byline Bancorp, Inc. (NYSE:BY) appeared in the 13F filings of 205 institutional investors for the quarter ended June 30, 2026.

Collectively, these holders controlled 55.15% of Byline Bancorp's outstanding shares in Q2 2026, up from 55.08% in Q1 2026.
Total shares held in Byline Bancorp fell 0.43% versus Q1 2026, while the number of holders rose 23.49% versus Q2 2025.
Among the 205 holders of Byline Bancorp, 113 added to their positions, 56 reduced their stakes and 36 left their positions unchanged.
In total, institutional investors held 24.92Mn shares of Byline Bancorp at the end of Q2 2026, down 107.5K from the prior quarter and up 1.31Mn from a year earlier.
As of June 30, 2026, BlackRock, Inc. held the largest stake in Byline Bancorp with 3.51Mn shares, or 7.77% of shares outstanding.
Among holders that already owned Byline Bancorp, the biggest buyers in Q2 2026 were T. Rowe Price Investment Management, Inc. (+880.88K shares), Federated Hermes, Inc. (+233.4K shares), BlackRock, Inc. (+215.97K shares), Arrowstreet Capital, Limited Partnership (+173.09K shares) and AQR Capital Management LLC (+148.47K shares).
The largest position reductions in BY for Q2 2026 were by FMR LLC (-643.71K shares), Wellington Management Group LLP (-535.49K shares), Ararat Capital Management LP (-133.16K shares), Qube Research & Technologies Ltd (-122.36K shares) and Maltese Capital Management LLC (-90.61K shares).
Byline Bancorp's 10 largest institutional shareholders as of Q2 2026 were BlackRock, Inc. (3.51Mn shares), Dimensional Fund Advisors LP (2.42Mn shares), T. Rowe Price Investment Management, Inc. (1.5Mn shares), Vanguard Capital Management LLC (1.19Mn shares), State Street Corp (1.09Mn shares), American Century Companies Inc (1.01Mn shares), Boston Partners (883.69K shares), Federated Hermes, Inc. (857.83K shares), AQR Capital Management LLC (813.86K shares) and Geode Capital Management, LLC (810.21K shares), per Business Quant data.

Form 13F Holdings

205 Institutional Holders

Report period 30 Jun, 2026

Total shares held 24.92Mn

Of outstanding 55.15%

#	Institution	CIK	Shares Held	% of Outstanding	Change (QoQ)	Change (%)	Value (USD)
1	BlackRock, Inc.	0002012383	3,510,896	7.77%	▲215,973	+6.55%	$132.22Mn
2	DIMENSIONAL FUND ADVISORS LP	0000354204	2,424,824	5.37%	▲58,224	+2.46%	$91.32Mn
3	T. Rowe Price Investment Management, Inc.	0001897612	1,495,588	3.31%	▲880,879	+143.30%	$56.32K
4	VANGUARD CAPITAL MANAGEMENT LLC	0002100119	1,191,625	2.64%	▼66,974	-5.32%	$44.88Mn
5	State Street Corp	0000093751	1,089,293	2.41%	▲58,231	+5.65%	$41.02Mn
6	AMERICAN CENTURY COMPANIES INC	0000748054	1,009,951	2.23%	▲104,762	+11.57%	$38.03Mn
7	Boston Partners	0001386060	883,689	1.96%	▼34,760	-3.78%	$33.20Mn
8	Federated Hermes, Inc.	0001056288	857,825	1.90%	▲233,404	+37.38%	$32.31Mn
9	AQR CAPITAL MANAGEMENT LLC	0001167557	813,855	1.80%	▲148,469	+22.31%	$30.65Mn
10	GEODE CAPITAL MANAGEMENT, LLC	0001214717	810,208	1.79%	▲22,175	+2.81%	$30.52Mn
11	Jpmorgan Chase & Co	0000019617	507,652	1.12%	▲48,235	+10.50%	$19.09Mn
12	Ararat Capital Management LP	0001768757	490,609	1.09%	▼133,163	-21.35%	$18.48Mn
13	WELLINGTON MANAGEMENT GROUP LLP	0000902219	488,460	1.08%	▼535,488	-52.30%	$18.40Mn
14	Nuveen, LLC	0001871926	437,302	0.97%	▲12,435	+2.93%	$16.47Mn
15	BRIDGEWAY CAPITAL MANAGEMENT, LLC	0001107261	424,253	0.94%	▲728	+0.17%	$15.98Mn
16	VANGUARD PORTFOLIO MANAGEMENT LLC	0002100121	362,683	0.80%	▲26,844	+7.99%	$13.66Mn
17	TWO SIGMA INVESTMENTS, LP	0001179392	350,081	0.77%	▲143,127	+69.16%	$13.18Mn
18	Morgan Stanley	0000895421	301,094	0.67%	▲19,103	+6.77%	$11.34Mn
19	Northern Trust Corp	0000073124	295,900	0.65%	▲29,488	+11.07%	$11.14Mn
20	CHARLES SCHWAB INVESTMENT MANAGEMENT INC	0000884546	269,067	0.60%	▲620	+0.23%	$10.13Mn

Showing 1 to 20 of 205 holders