Mercury Systems MRCY Institutional Ownership

NASDAQ MRCY

$83.66 +0.66 (+0.80%)

As of: Oct 1, 2026 · 2:17 PM EDT

Institutions by Trading Activity

394 Institutions

Increased 216 54.8%

Unchanged 48 12.2%

Reduced 130 33.0%

Ownership Statistics

13F · as of 30 Jun, 2026

Institutional Ownership

111.10%

▲+3.45 pp QoQ

Shares Held by Institutions

66.02Mn

of 59.42Mn outstanding

▲+4.59% QoQ

Shares Outstanding

59.42Mn

-6.59Mn held outside 13F filers

Institutional Investors

394

filed 13F for Jun 2026

▲+39 vs prior quarter

Net Shares Added (QoQ)

+2.90Mn

accumulated since last quarter

Value of Holdings

$5.48Bn

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

Quarter ending 30 Jun, 2026

Mercury Systems Inc (NASDAQ:MRCY) has 393 institutional investors with active 13F positions as of June 2026.

Their combined ownership stood at 111.1% of outstanding shares in June 2026, up from 107.7% in March 2026.
Their total shares held in MRCY increased 4.59% quarter over quarter, and separately, investors owning Mercury Systems increased 38.38% from a year ago.
Of these 393 holders, 215 added to their stakes in Mercury Systems, 130 trimmed positions, and 48 made no changes.
Altogether, these fund groups held 66.01Mn shares in MRCY by June 2026, up by 2.9Mn shares quarter on quarter, and up 2.18Mn shares year over year.
As of June 30, 2026, the biggest holder of Mercury Systems is BlackRock, Inc. at 9.37Mn shares, representing 15.77% of shares outstanding.
The biggest buyers of Mercury Systems for the quarter ending June 2026 included SEGALL BRYANT & HAMILL, LLC (1.03Mn), FMR LLC (938.44K), Sixth Street Partners Management Company, L.P. (627.58K), AMERICAN CAPITAL MANAGEMENT INC (486.06K), BlackRock, Inc. (450.58K).
The largest sellers of Mercury Systems for the quarter ending June 2026 were Ameriprise Financial Inc (492.6K), State Street Corp (447.43K), Conestoga Capital Advisors, LLC (431.4K), JENNISON ASSOCIATES LLC (333.22K), VOYA INVESTMENT MANAGEMENT LLC (199.18K).
Per Business Quant data, the top 10 holders of Mercury Systems for the quarter ending June 2026 are BlackRock, Inc. (9.37Mn), JANA Partners Management, LP (3.96Mn), State Street Corp (3.42Mn), VANGUARD PORTFOLIO MANAGEMENT LLC (3.03Mn), Invesco Ltd. (2.67Mn), VANGUARD CAPITAL MANAGEMENT LLC (2.42Mn), FMR LLC (1.84Mn), T. Rowe Price Investment Management, Inc. (1.6Mn), Goldman Sachs Group Inc (1.58Mn), Conestoga Capital Advisors, LLC (1.49Mn).

Form 13F Holdings

394 Institutional Holders

Report period 30 Jun, 2026

Total shares held 66.02Mn

Of outstanding 111.10%

#	Institution	CIK	Shares Held	% of Outstanding	Change (QoQ)	Change (%)	Value (USD)
1	BlackRock, Inc.	0002012383	9,370,902	15.77%	▲450,577	+5.05%	$1.15Bn
2	JANA Partners Management, LP	0001998597	3,958,849	6.66%	▼148,575	-3.62%	$484.29Mn
3	State Street Corp	0000093751	3,418,290	5.75%	▼447,429	-11.57%	$418.05Mn
4	VANGUARD PORTFOLIO MANAGEMENT LLC	0002100121	3,031,459	5.10%	▲120,555	+4.14%	$370.84Mn
5	Invesco Ltd.	0000914208	2,669,450	4.49%	▲227,872	+9.33%	$326.55Mn
6	VANGUARD CAPITAL MANAGEMENT LLC	0002100119	2,422,629	4.08%	▲18,811	+0.78%	$296.36Mn
7	FMR LLC	0000315066	1,842,103	3.10%	▲938,435	+103.85%	$225.34Mn
8	T. Rowe Price Investment Management, Inc.	0001897612	1,595,711	2.69%	▲15,879	+1.01%	$195.20K
9	Goldman Sachs Group Inc	0000886982	1,575,727	2.65%	▲374,615	+31.19%	$192.76Mn
10	Conestoga Capital Advisors, LLC	0001163744	1,487,191	2.50%	▼431,400	-22.49%	$181.93Mn
11	GEODE CAPITAL MANAGEMENT, LLC	0001214717	1,459,574	2.46%	▼66,142	-4.34%	$178.58Mn
12	FIRST TRUST ADVISORS LP	0001125816	1,298,957	2.19%	▲138,182	+11.90%	$158.90Mn
13	PRICE T ROWE ASSOCIATES INC /MD/	0000080255	1,285,569	2.16%	▲256,960	+24.98%	$157.26K
14	DIMENSIONAL FUND ADVISORS LP	0000354204	1,156,682	1.95%	▼71,293	-5.81%	$141.44Mn
15	SEGALL BRYANT & HAMILL, LLC	0001006378	1,029,491	1.73%	▲1,029,491	0.00%	$125.94Mn
16	Fisher Asset Management, LLC	0000850529	944,069	1.59%	▼36,298	-3.70%	$115.49Mn
17	Franklin Templeton Inc	0000038777	846,732	1.42%	▲393,099	+86.66%	$103.58Mn
18	Neuberger Berman Group LLC	0001465109	841,556	1.42%	▼68,862	-7.56%	$102.07Mn
19	Morgan Stanley	0000895421	811,565	1.37%	▲140,234	+20.89%	$99.28Mn
20	WELLINGTON MANAGEMENT GROUP LLP	0000902219	775,502	1.31%	▲19,977	+2.64%	$94.87Mn

Showing 1 to 20 of 394 holders