Byline Bancorp Ownership | Who Owns Byline Bancorp?

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Byline Bancorp Ownership Summary

Byline Bancorp is owned by 54.56% institutional investors, 32.73% insiders, and 12.71% retail investors. Blackrock is the largest institutional shareholder, holding 6.70% of BY shares. Vanguard Total Stock Mkt Idx Inv is the top mutual fund, with 2.21% of its assets in Byline Bancorp shares.

BY Ownership Benchmark

Type	Name	% Inst	% Insiders	% Retail
Stock	Byline Bancorp	54.56%	32.73%	12.71%
Sector	Financial Services Stocks	51.64%	15.54%	32.82%
Industry	Regional Banks Stocks	53.95%	12.38%	33.68%

Institutional Shareholders

Top Institutional Shareholders by Total Shares

Holder	Shares	% Holding	Value
Blackrock	2.90M	6.70%	$68.80M
Blackrock funding, inc. /de	2.34M	5.34%	$62.50M
Dimensional fund advisors lp	2.13M	4.89%	$61.75M
Vanguard group	1.56M	3.59%	$45.35M
Fmr	1.05M	2.41%	$30.38M
State street	913.74K	2.10%	$26.50M
Aristotle capital boston	893.31K	2.04%	$23.88M
Ararat capital management lp	801.92K	1.84%	$23.26M
American century companies	735.06K	1.68%	$19.65M
Boston partners	722.29K	1.66%	$20.84M

Top Institutional Shareholders by % of Total Assets

Holder	Shares	% Assets	Value
Ararat capital management lp	801.92K	9.28%	$23.26M
Mendon capital advisors	125.00K	1.62%	$3.34M
Detalus advisors	202.44K	1.45%	$5.61M
Endeavour capital advisors	150.00K	1.38%	$4.01M
Aristotle capital boston	893.31K	1.22%	$23.88M
Maltese capital management	256.60K	0.96%	$6.86M
Ejf capital	30.00K	0.64%	$801.90K
Next century growth investors	247.81K	0.51%	$6.62M
Banc funds	107.61K	0.43%	$2.88M
Bridgeway capital management	522.75K	0.34%	$15.16M

Top Buyers

Holder	Shares	% Assets	Change
Boston partners	722.29K	0.03%	643.63K
Blackrock	2.90M	0.00%	596.15K
T. rowe price investment management	596.83K	0.01%	299.04K
Maltese capital management	256.60K	0.96%	256.60K
Endeavour capital advisors	150.00K	1.38%	150.00K

Top Sellers

Holder	Shares	% Assets	Change
Blackrock funding, inc. /de	2.34M	0.00%	-470.62K
Assenagon asset management	-	-	-140.63K
Next century growth investors	247.81K	0.51%	-82.11K
Atom investors lp	-	-	-54.23K
Cresset asset management	-	-	-53.95K

New Positions

Holder	Shares	% Assets	Change	Value
Maltese capital management	256.60K	0.96%	256.60K	$6.86M
Endeavour capital advisors	150.00K	1.38%	150.00K	$4.01M
First trust advisors lp	124.44K	0.00%	124.44K	$3.61M
Alyeska investment group	100.00K	0.01%	100.00K	$2.67M
Tudor investment corp et al	87.77K	0.01%	87.77K	$2.35M

Sold Out

Holder	Change
Advisor group	-2.00
Nelson, van denburg & campbell wealth management group	-4.00
Bokf, na	-12.00
Stephens consulting	-15.00
Versant capital management	-15.00

Institutional Ownership Trends

Date	Holdings	Change %	Shares	Change %	Ownership	Change %	Increased Position	Change %	Decreased Position	Change %
Jun 30, 2025	166	12.16%	23,889,884	18.35%	54	2.57%	101	53.03%	42	-22.22%
Mar 31, 2025	147	4.26%	20,172,583	0.69%	46	2.17%	66	-12.00%	53	39.47%
Dec 31, 2024	58	-58.27%	6,667,903	-65.34%	15	0.78%	29	-62.34%	13	-68.29%
Sep 30, 2024	139	4.51%	19,206,398	3.03%	44	2.38%	77	1.32%	42	7.69%
Jun 30, 2024	130	-2.99%	18,632,066	2.26%	43	2.08%	75	10.29%	38	-7.32%

Top Mutual Funds Shareholders

Holder	Shares	% Holding	Change
Vanguard Total Stock Mkt Idx Inv	1.02M	2.21%	-22.52K
Vanguard US Total Market Shares ETF	779.78K	1.75%	-
iShares Russell 2000 ETF	719.56K	1.57%	-
Avantis US Small Cap Value ETF	623.61K	1.36%	1.34K
FIAM Small Cap Core Composite	574.50K	1.26%	-4.20K
FIAM Small Cap Core CIT Cl B	552.10K	1.20%	-9.60K
DFA US Small Cap Value I	509.62K	1.11%	-
Federated Hermes MDT Small Cap Core IS	439.44K	0.96%	-
Federated Hermes MDT SCC Institutional	439.44K	0.96%	-
T. Rowe Price Small-Cap Value	364.93K	0.80%	-836.00

Recent Insider Transactions

Date	Name	Role	Activity	Value
Oct 28, 2025	ABRAHAM THOMAS	PRESIDENT, SBC	Sell	$91.72K
Oct 28, 2025	ABRAHAM THOMAS	PRESIDENT, SBC	Sell	$537.43K
Oct 28, 2025	KISTNER WILLIAM G	-	Buy	$1.79K
Sep 12, 2025	Rose Dana	CHIEF HUMAN RESOURCES OFFICER	Sell	$57.49K
Aug 28, 2025	Ptacin Brogan	HEAD OF COMMERCIAL BANKING	Sell	$343.73K

Insider Transactions Trends

Date	Buy	Sell
2025 Q4	1	2
2025 Q3	1	2
2025 Q2	6	2
2025 Q1	2	2
2024 Q4	1	3

BY Ownership FAQ

Who Owns Byline Bancorp?

Byline Bancorp shareholders are primarily institutional investors at 54.56%, followed by 32.73% insiders and 12.71% retail investors. The average institutional ownership in Byline Bancorp's industry, Regional Banks Stocks, is 53.95%, which Byline Bancorp exceeds.

Who owns the most shares of Byline Bancorp?

Byline Bancorp’s largest shareholders are Blackrock (2.9M shares, 6.70%), Blackrock funding, inc. /de (2.34M shares, 5.34%), and Dimensional fund advisors lp (2.13M shares, 4.89%). Together, they hold 16.93% of Byline Bancorp’s total shares outstanding.

Does Blackrock own Byline Bancorp?

Yes, BlackRock owns 6.70% of Byline Bancorp, totaling 2.9M shares as of Jun 2024. This represents 0.00% of BlackRock's total assets, with a market value of 68.8M$. In the last quarter, BlackRock increased its holdings by 596.15K shares, a 25.90% change.

Who is Byline Bancorp’s biggest shareholder by percentage of total assets invested?

Ararat capital management lp is Byline Bancorp’s biggest shareholder by percentage of total assets invested, with 9.28% of its assets in 801.92K Byline Bancorp shares, valued at 23.26M$.

Who is the top mutual fund holder of Byline Bancorp shares?

Vanguard Total Stock Mkt Idx Inv is the top mutual fund holder of Byline Bancorp shares, with 2.21% of its total shares outstanding invested in 1.02M Byline Bancorp shares.

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