Mercury Systems MRCY Institutional Ownership

NASDAQ MRCY

$80.76 -2.70 (-3.24%)

As of: Sep 9, 2026 · 3:59 PM EDT

Institutions by Trading Activity

393 Institutions

Increased 215 54.7%

Unchanged 48 12.2%

Reduced 130 33.1%

Ownership Statistics

13F · as of 30 Jun, 2026

Institutional Ownership

111.08%

▲+3.39 pp QoQ

Shares Held by Institutions

66.01Mn

of 59.42Mn outstanding

▲+4.59% QoQ

Shares Outstanding

59.42Mn

-6.59Mn held outside 13F filers

Institutional Investors

393

filed 13F for Jun 2026

▲+38 vs prior quarter

Net Shares Added (QoQ)

+2.90Mn

accumulated since last quarter

Value of Holdings

$5.44Bn

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) is held by 393 institutional investors per 13F filings through June 2026.

These investors held 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.
Activity in MRCY broke down as 215 buyers, 130 sellers, and 48 unchanged among 393 total holders.
Combined, these investors held 66.01Mn shares in MRCY for June 2026, up by 2.9Mn shares quarter on quarter, and down 122.04K shares year over year.
As of June 30, 2026, BlackRock, Inc. held the largest stake in Mercury Systems with 9.37Mn shares, accounting for 15.77% of total shares outstanding.
The largest buyers of Mercury Systems for the quarter ending June 2026 were 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).
Leading sellers of Mercury Systems shares 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).
Business Quant data shows the 10 biggest positions in Mercury Systems as of June 2026 are held by 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

393 Institutional Holders

Report period 30 Jun, 2026

Total shares held 66.01Mn

Of outstanding 111.08%

#	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 Resources 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 393 holders