Company · Ownership research

AtriCure, Inc. ATRC

CIK 0001323885 · CUSIP 04963C209

Insider trading Initial holdings Institutional holders

Quarter-end disclosures, not live holdings.

Several CUSIPs are reported for this company; this page shows CUSIP 04963C209 (ATRC), not CUSIP 04963C909 (ATRC), and does not merge CUSIPs.

This page lists the top 20 of 114 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	GEODE CAPITAL MANAGEMENT, LLC CIK 1214717 · View history	$73.25M 1,303,089 shares	0.00%	-16.60K(-1.30%)Reduced	SEC filing ↗ Nov 6, 2026	▾
02	DIMENSIONAL FUND ADVISORS LP CIK 354204 · View history	$57.40M 1,021,214 shares	0.01%	-22.82K(-2.20%)Reduced	SEC filing ↗ Nov 4, 2026	▾
03	PRINCIPAL FINANCIAL GROUP INC CIK 1126328 · View history	$21.71M 386,234 shares	0.01%	+316.38K(+452.90%)Added	SEC filing ↗ Nov 2, 2026	▾
04	Bank of New York Mellon Corp CIK 1390777 · View history	$14.36M 255,501 shares	0.00%	+114.23K(+80.90%)Added	SEC filing ↗ Nov 5, 2026	▾
05	Amundi CIK 1330387 · View history	$13.25M 235,690 shares	0.00%	-29.16K(-11.00%)Reduced	SEC filing ↗ Nov 6, 2026	▾
06	NICHOLAS COMPANY, INC. CIK 903949 · View history	$11.50M 204,595 shares	0.21%	0(0.00%)Unchanged	SEC filing ↗ Nov 5, 2026	▾
07	HARBOR CAPITAL ADVISORS, INC. CIK 1039128 · View history	$5.10M 90,742 shares	0.35%	+48.36K(+114.10%)Added	SEC filing ↗ Oct 22, 2026	▾
08	Granite Investment Partners, LLC CIK 1542266 · View history	$4.50M 80,108 shares	0.24%	+21.28K(+36.20%)Added	SEC filing ↗ Nov 4, 2026	▾
09	Lisanti Capital Growth, LLC CIK 1424467 · View history	$4.46M 79,365 shares	1.20%	+79.36KNew	SEC filing ↗ Nov 5, 2026	▾
10	DEUTSCHE BANK AG\ CIK 948046 · View history	$3.08M 54,731 shares	0.00%	-4.94K(-8.30%)Reduced	SEC filing ↗ Nov 6, 2026	▾
11	Riverwater Partners LLC CIK 1882572 · View history	$2.84M 50,588 shares	0.79%	-21.01K(-29.30%)Reduced	SEC filing ↗ Nov 3, 2026	▾
12	B. Metzler seel. Sohn & Co. AG CIK 1847838 · View history	$2.80M 49,876 shares	0.02%	0(0.00%)Unchanged	SEC filing ↗ Oct 30, 2026	▾
13	Diversified Trust Co CIK 1479844 · View history	$2.27M 40,443 shares	0.05%	-9.78K(-19.50%)Reduced	SEC filing ↗ Nov 6, 2026	▾
14	BARCLAYS PLC CIK 312069 · View history	$2.03M 36,172 shares	0.00%	+8.59K(+31.10%)Added	SEC filing ↗ Nov 6, 2026	▾
15	Marks Group Wealth Management, Inc CIK 1802473 · View history	$1.93M 34,374 shares	0.17%	0(0.00%)Unchanged	SEC filing ↗ Nov 5, 2026	▾
16	Thrivent Financial for Lutherans CIK 314984 · View history	$1.82M 32,352 shares	0.00%	+32.35KNew	SEC filing ↗ Nov 5, 2026	▾
17	State of New Jersey Common Pension Fund D CIK 1483066 · View history	$1.39M 24,698 shares	0.00%	+24.70KNew	SEC filing ↗ Nov 5, 2026	▾
18	Russell Investments Group, Ltd. CIK 1692234 · View history	$1.28M 22,808 shares	0.00%	+900(+4.10%)Added	SEC filing ↗ Nov 6, 2026	▾
19	TRUIST FINANCIAL CORP CIK 92230 · View history	$1.22M 21,791 shares	0.00%	+246(+1.10%)Added	SEC filing ↗ Oct 30, 2026	▾
20	Louisiana State Employees Retirement System CIK 1537191 · View history	$1.22M 21,700 shares	0.02%	+21.70KNew	SEC filing ↗ Oct 20, 2026	▾

Showing 20 / 114 institutions. The complete set is available through the API.

Coverage & totals by quarter

Reporting institutions

114

Cancelled or null records excluded

Disclosed shares

4,488,077

Not deduplicated across managers

Disclosed value

$251.87M

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.

AtriCure, Inc. · Q3 2026

Explore all 114 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.