Mercury Systems Ownership | Who Owns Mercury Systems?

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Mercury Systems Ownership Summary

Mercury Systems is owned by 102.27% institutional investors, 2.12% insiders. Blackrock is the largest institutional shareholder, holding 15.27% of MRCY shares. iShares Core S&P Small-Cap ETF is the top mutual fund, with 5.26% of its assets in Mercury Systems shares.

MRCY Ownership Benchmark

Type	Name	% Inst	% Insiders	% Retail
Stock	Mercury Systems	102.27%	2.12%	-4.39%
Sector	Industrials Stocks	50.72%	11.74%	37.54%
Industry	Defense Stocks	43.44%	10.98%	45.58%

Institutional Shareholders

Top Institutional Shareholders by Total Shares

Holder	Shares	% Holding	Value
Blackrock	8.81M	15.27%	$237.75M
Blackrock funding, inc. /de	8.82M	15.14%	$370.48M
Jana partners management, lp	6.94M	11.91%	$291.55M
William blair investment management	6.43M	11.04%	$270.17M
Vanguard group	5.55M	9.53%	$233.13M
State street	3.33M	5.77%	$89.80M
Dimensional fund advisors lp	2.20M	3.78%	$92.49M
Conestoga capital advisors	2.07M	3.56%	$87.06M
Victory capital management	2.06M	3.54%	$86.53M
Scopia capital management lp	1.33M	2.28%	$55.78M

Top Institutional Shareholders by % of Total Assets

Holder	Shares	% Assets	Value
Jana partners management, lp	6.94M	14.34%	$291.55M
Scopia capital management lp	1.33M	5.90%	$55.78M
13d management	131.29K	2.59%	$3.54M
Steel partners	66.54K	2.27%	$1.80M
Sasco capital inc / ct/	561.03K	2.14%	$15.14M
Mesirow institutional investment management	500.83K	1.62%	$21.03M
Conestoga capital advisors	2.07M	1.15%	$87.06M
Snyder capital management l p	1.17M	1.02%	$48.93M
Staley capital advisers	488.08K	0.91%	$20.50M
Ironwood investment management	40.99K	0.86%	$1.72M

Top Buyers

Holder	Shares	% Assets	Change
Blackrock	8.81M	0.01%	1.40M
Conestoga capital advisors	2.07M	1.15%	743.55K
Millennium management	1.02M	0.02%	677.89K
Scopia capital management lp	1.33M	5.90%	648.88K
Fmr	555.99K	0.00%	552.93K

Top Sellers

Holder	Shares	% Assets	Change
Starboard value lp	-	-	-2.29M
William blair investment management	6.43M	0.66%	-866.91K
T. rowe price investment management	-	-	-805.65K
Westwood group	-	-	-787.79K
Clearline capital lp	-	-	-526.61K

New Positions

Holder	Shares	% Assets	Change	Value
Fisher asset management	395.26K	0.01%	395.26K	$16.60M
Raymond james financial	101.38K	0.00%	101.38K	$4.26M
Wealthfront advisers	76.49K	0.04%	76.49K	$12.53M
Peak6	29.02K	0.00%	29.02K	$1.22M
Gotham asset management	10.43K	0.00%	10.43K	$437.93K

Sold Out

Holder	Change
Capital performance advisors llp	-4.00
Gradient investments	-5.00
Mendota financial group	-6.00
International assets investment management	-10.00
Allspring global investments	-12.00

Institutional Ownership Trends

Date	Holdings	Change %	Shares	Change %	Ownership	Change %	Increased Position	Change %	Decreased Position	Change %
Dec 31, 2024	227	-9.20%	59,582,534	-5.47%	102	0.87%	105	-6.25%	81	-11.96%
Sep 30, 2024	248	3.33%	63,023,819	-2.69%	108	0.86%	112	-12.50%	92	16.46%
Jun 30, 2024	240	4.35%	64,763,048	3.91%	112	0.96%	128	-3.76%	79	14.49%
Mar 31, 2024	230	1.77%	62,324,286	2.23%	108	0.96%	133	13.68%	69	-5.48%
Dec 31, 2023	226	1.80%	60,964,518	2.77%	106	0.98%	117	-10.00%	73	10.61%

Top Mutual Funds Shareholders

Holder	Shares	% Holding	Change
iShares Core S&P Small-Cap ETF	3.14M	5.26%	1.96K
Vanguard US Total Market Shares ETF	1.60M	2.69%	1.79K
Vanguard Total Stock Mkt Idx Inv	1.59M	2.67%	1.22K
Victory Small Cap Value CIT (Net 75)	1.56M	2.62%	240.00K
Victory Sycamore Small Company Opp R	1.56M	2.62%	240.00K
iShares Russell 2000 ETF	1.37M	2.30%	-11.88K
Vanguard Small Cap Index	1.29M	2.17%	1.05K
Conestoga Small Cap Investors	1.29M	2.16%	-
William Blair Sml-Mid Cap Grwth CIT Cl A	1.17M	1.96%	1.17M
FullerThaler Behavioral Small-Cap Value	1.09M	1.82%	5.70K

Recent Insider Transactions

Date	Name	Role	Activity	Value
Feb 18, 2025	KUPINSKY STUART	EVP, CLO & Corp Sec	Sell	$104.88K
Feb 18, 2025	Munro Douglas	VP, CAO	Sell	$26.25K
Feb 18, 2025	Wells Charles Roger IV	EVP, COO	Sell	$103.34K
Nov 18, 2024	Wells Charles Roger IV	EVP, COO	Sell	$59.24K
Sep 16, 2024	Munro Douglas	VP, CAO	Sell	$2.59K

Insider Transactions Trends

Date	Buy	Sell
2025 Q2	-	-
2025 Q1	-	3
2024 Q4	-	1
2024 Q3	1	10
2024 Q2	-	1

MRCY Ownership FAQ

Who Owns Mercury Systems?

Mercury Systems shareholders are primarily institutional investors at 102.27%, followed by 2.12% insiders and -4.39% retail investors. The average institutional ownership in Mercury Systems's industry, Defense Stocks, is 43.44%, which Mercury Systems exceeds.

Who owns the most shares of Mercury Systems?

Mercury Systems’s largest shareholders are Blackrock (8.81M shares, 15.27%), Blackrock funding, inc. /de (8.82M shares, 15.14%), and Jana partners management, lp (6.94M shares, 11.91%). Together, they hold 42.32% of Mercury Systems’s total shares outstanding.

Does Blackrock own Mercury Systems?

Yes, BlackRock owns 15.27% of Mercury Systems, totaling 8.81M shares as of Jun 2024. This represents 0.01% of BlackRock's total assets, with a market value of 237.75M$. In the last quarter, BlackRock increased its holdings by 1.4M shares, a 18.95% change.

Who is Mercury Systems’s biggest shareholder by percentage of total assets invested?

Jana partners management, lp is Mercury Systems’s biggest shareholder by percentage of total assets invested, with 14.34% of its assets in 6.94M Mercury Systems shares, valued at 291.55M$.

Who is the top mutual fund holder of Mercury Systems shares?

iShares Core S&P Small-Cap ETF is the top mutual fund holder of Mercury Systems shares, with 5.26% of its total shares outstanding invested in 3.14M Mercury Systems shares.

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