Company · Ownership research

FINANCIAL INSTITUTIONS INC FISI

CIK 0000862831 · CUSIP 317585404

Insider trading Initial holdings Institutional holders

Quarter-end disclosures, not live holdings.

Several CUSIPs are reported for this company; this page shows CUSIP 317585404 (FISI), not CUSIP 317585954 (FISI), CUSIP 317585904 (FISI), and does not merge CUSIPs.

This page lists the top 20 of 150 rows by value; the complete set is available through the API.

Some filings reported values in thousands; those figures were scaled ×1,000 to dollars.

Top 20 institutions

Weight means this stock's share of the manager's own portfolio.

By reported value

#	Manager	Value	Manager weight	Change vs prior	Source
01	PL Capital Advisors, LLC CIK 1569147 · View history	$56.19M 1,802,791 shares	17.71%	+27.91K(+1.60%)Added	SEC filing ↗ Feb 10, 2026	▾
02	BlackRock, Inc. CIK 2012383 · View history	$45.56M 1,461,503 shares	0.00%	+10.69K(+0.70%)Added	SEC filing ↗ Feb 12, 2026	▾
03	VANGUARD GROUP INC CIK 102909 · View history	$36.06M 1,157,026 shares	0.00%	+61.60K(+5.60%)Added	SEC filing ↗ Jan 29, 2026	▾
04	WELLINGTON MANAGEMENT GROUP LLP CIK 902219 · View history	$32.71M 1,049,295 shares	0.01%	+312.47K(+42.40%)Added	SEC filing ↗ Feb 17, 2026	▾
05	ADAGE CAPITAL PARTNERS GP, L.L.C. CIK 1165408 · View history	$30.30M 972,043 shares	0.05%	+160.82K(+19.80%)Added	SEC filing ↗ Feb 17, 2026	▾
06	DIMENSIONAL FUND ADVISORS LP CIK 354204 · View history	$29.80M 955,906 shares	0.01%	+4.80K(+0.50%)Added	SEC filing ↗ Feb 12, 2026	▾
07	Ategra Capital Management, LLC CIK 1741369 · View history	$17.83M 572,075 shares	10.19%	0(0.00%)Unchanged	SEC filing ↗ Feb 17, 2026	▾
08	STATE STREET CORP CIK 93751 · View history	$15.98M 507,389 shares	0.00%	-37.27K(-6.80%)Reduced	SEC filing ↗ Feb 13, 2026	▾
09	GEODE CAPITAL MANAGEMENT, LLC CIK 1214717 · View history	$15.03M 482,155 shares	0.00%	-3.83K(-0.80%)Reduced	SEC filing ↗ Feb 9, 2026	▾
10	ACADIAN ASSET MANAGEMENT LLC CIK 916542 · View history	$13.28M 426,036 shares	0.02%	+150.64K(+54.70%)Added	SEC filing ↗ Feb 10, 2026	▾
11	HOTCHKIS & WILEY CAPITAL MANAGEMENT LLC CIK 1164833 · View history	$11.27M 361,452 shares	0.03%	-3.66K(-1.00%)Reduced	SEC filing ↗ Feb 17, 2026	▾
12	COMMONWEALTH EQUITY SERVICES, LLC CIK 312272 · View history	$11.08M 355,476 shares	0.01%	+21.19K(+6.30%)Added	SEC filing ↗ Feb 12, 2026	▾
13	MORGAN STANLEY CIK 895421 · Amended · View history	$10.52M 337,488 shares	0.00%	+72.56K(+27.40%)Added	SEC filing ↗ May 27, 2026	▾
14	JPMORGAN CHASE & CO CIK 19617 · View history	$8.98M 288,077 shares	0.00%	-89.66K(-23.70%)Reduced	SEC filing ↗ Feb 11, 2026	▾
15	RENAISSANCE TECHNOLOGIES LLC CIK 1037389 · View history	$8.46M 271,300 shares	0.01%	-40.19K(-12.90%)Reduced	SEC filing ↗ Feb 12, 2026	▾
16	Fourthstone LLC CIK 1767803 · View history	$7.93M 254,501 shares	1.48%	-67.70K(-21.00%)Reduced	SEC filing ↗ Feb 13, 2026	▾
17	ALLIANCEBERNSTEIN L.P. CIK 1109448 · View history	$7.48M 240,126 shares	0.00%	+20.21K(+9.20%)Added	SEC filing ↗ Feb 17, 2026	▾
18	Rhino Investment Partners, Inc CIK 1828776 · View history	$6.73M 215,887 shares	1.91%	-4.36K(-2.00%)Reduced	SEC filing ↗ Feb 17, 2026	▾
19	GOLDMAN SACHS GROUP INC CIK 886982 · Amended · View history	$6.69M 214,584 shares	0.00%	-5.03K(-2.30%)Reduced	SEC filing ↗ Mar 25, 2026	▾
20	ProShare Advisors LLC CIK 1357955 · View history	$6.09M 195,512 shares	0.01%	-264.29K(-57.50%)Reduced	SEC filing ↗ Feb 6, 2026	▾

Showing 20 / 150 institutions. The complete set is available through the API.

Coverage & totals by quarter

Reporting institutions

150

Cancelled or null records excluded

Disclosed shares

15,777,570

Not deduplicated across managers

Disclosed value

$491.99M

Not market cap or free float

Reporting institutions by quarter

Counts also change with data coverage and reporting entities; they do not measure net buying. Distinct managers with a live stock row in this CUSIP; totals may include overlapping filings and are not a share of the company.

FINANCIAL INSTITUTIONS INC · Q4 2025

Explore all 150 reporting institutions.

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Sources, coverage & how to read this data

Figures are as reported to the SEC and merged with later amendments where Akkru could match them. Preview limits apply to what is listed, not to the totals, which come from the complete reported data. Nothing is zero-filled: a missing quarter or month is shown as missing.