Mercury Systems Inc (MRCY) Ownership

45.12 ↑1.63 (3.75%)

As of December 31, 1969, 7:00pm EST.

Institutions
Mutual Funds

Institutional Ownership

BlackRock Inc is the biggest individual institutional holder of Mercury Systems Inc (MRCY), owning a total of 8.8 million shares. Combined, the top 35 institutional holders of MRCY own 120.75% of the company with a total of 71.9 million shares.

In the latest ownership report on December 31st 2024, the top 35 institutional holders increased their combined ownership of MRCY by 1.7 million shares. 11 institutions bought 2,991,537 total additional shares and increased their ownership by an average of 38.97%. However 8 institutions sold 1,268,626 total shares and decreased their ownership by an average of 3.95%.

Overall this is a positive sign as the number of shares owned by the top 20 institutional holders of Mercury Systems increased by a net total of 1,722,911 in the latest quarter.

Institution Ownership Chart

Latest Institutional Ownership Changes

Owner	Percent Owned	Percent Change	Shares Owned	Share Change	Date Reported
BlackRock Inc	14.780%	1.673%	8,820,916	145,124	2024-12-31
Jana Partners Management LP	11.631%	0.000%	6,941,565	0	2024-12-31
William Blair Investment Management, LLC	10.778%	-11.876%	6,432,601	-866,911	2024-12-31
Vanguard Group Inc	9.300%	0.750%	5,550,610	41,324	2024-12-31
State Street Corp	4.920%	-8.198%	2,936,241	-262,193	2024-12-31
Dimensional Fund Advisors, Inc.	3.690%	2.453%	2,202,124	52,725	2024-12-31
Conestoga Capital Advisors, LLC	3.473%	55.937%	2,072,817	743,552	2024-12-31
Victory Capital Management Inc.	3.452%	16.696%	2,060,131	294,747	2024-12-31
Scopia Management Inc	2.225%	95.544%	1,328,021	648,878	2024-12-31
Segall Bryant & Hamill	2.129%	0.153%	1,270,821	1,946	2024-12-31
Geode Capital Management, LLC	2.061%	-3.224%	1,230,214	-40,986	2024-12-31
Fuller & Thaler Asset Management Inc	2.015%	-0.231%	1,202,667	-2,784	2024-12-31
BAMCO Inc	2.013%	-0.359%	1,201,324	-4,330	2024-12-31
Snyder Capital Management LP	1.952%	-6.327%	1,165,119	-78,696	2024-12-31
Neuberger Berman Group LLC	1.792%	-0.706%	1,069,618	-7,601	2024-12-31
Millennium Management LLC	1.715%	196.142%	1,023,508	677,894	2024-12-31
First Trust Advisors L.P.	1.657%	50.792%	988,936	333,109	2024-12-31
Royal Bank of Canada	1.269%	-0.672%	757,236	-5,125	2024-12-31
Charles Schwab Investment Management Inc	1.128%	2.184%	673,224	14,391	2024-12-31
Amvescap Plc.	1.059%	6.370%	631,961	37,847	2024-12-31

Top Institutions

Owner	Percent Owned	Percent Change	Shares Owned	Share Change	Date Reported
BlackRock Inc	14.780%	1.673%	8,820,916	145,124	2024-12-31
Jana Partners Management LP	11.631%	0.000%	6,941,565	0	2024-12-31
William Blair Investment Management, LLC	10.778%	-11.876%	6,432,601	-866,911	2024-12-31
Vanguard Group Inc	9.300%	0.750%	5,550,610	41,324	2024-12-31
JANA Partners LLC	7.414%	120.460%	4,394,641	2,401,242	2023-06-30
State Street Corporation	6.309%	5.997%	3,748,098	212,050	2024-03-31
State Street Corp	4.920%	-8.198%	2,936,241	-262,193	2024-12-31
Starboard Value LP	3.847%	-13.889%	2,294,000	-370,000	2024-06-30
Wellington Management Company LLP	3.814%	0.828%	2,260,566	18,563	2023-06-30
Dimensional Fund Advisors, Inc.	3.690%	2.453%	2,202,124	52,725	2024-12-31
Conestoga Capital Advisors, LLC	3.473%	55.937%	2,072,817	743,552	2024-12-31
Victory Capital Management Inc.	3.452%	16.696%	2,060,131	294,747	2024-12-31
Morgan Stanley - Brokerage Accounts	2.702%	57.549%	1,611,088	588,494	2024-06-30
Fred Alger Management, LLC	2.312%	4.996%	1,345,333	64,009	2023-03-31
Scopia Management Inc	2.225%	95.544%	1,328,021	648,878	2024-12-31
Segall Bryant & Hamill	2.129%	0.153%	1,270,821	1,946	2024-12-31
Geode Capital Management, LLC	2.061%	-3.224%	1,230,214	-40,986	2024-12-31
Fuller & Thaler Asset Management Inc	2.015%	-0.231%	1,202,667	-2,784	2024-12-31
BAMCO Inc	2.013%	-0.359%	1,201,324	-4,330	2024-12-31
Snyder Capital Management LP	1.952%	-6.327%	1,165,119	-78,696	2024-12-31
Neuberger Berman Group LLC	1.792%	-0.706%	1,069,618	-7,601	2024-12-31
Millennium Management LLC	1.715%	196.142%	1,023,508	677,894	2024-12-31
First Trust Advisors L.P.	1.657%	50.792%	988,936	333,109	2024-12-31
Federated Hermes Inc	1.639%	3.280%	953,608	30,286	2023-03-31
Manufacturers Life Insurance Co	1.539%	10.850%	913,498	89,416	2023-12-31
FMR Inc	1.401%	4.575%	815,475	35,678	2022-12-31
T. Rowe Price Investment Management,Inc.	1.350%	0.000%	805,653	805,653	2024-09-30
Westwood Holdings Group Inc	1.320%	-45.606%	787,788	-660,515	2024-09-30
Royal Bank of Canada	1.269%	-0.672%	757,236	-5,125	2024-12-31
Charles Schwab Investment Management Inc	1.128%	2.184%	673,224	14,391	2024-12-31
Ranger Investment Management LP	1.100%	-3.559%	653,108	-24,100	2023-09-30
Amvescap Plc.	1.059%	6.370%	631,961	37,847	2024-12-31
Cooper Creek Partners Management LLC	1.063%	-27.566%	630,856	-240,080	2023-12-31
Bank of New York Mellon Corp	0.956%	-9.419%	567,242	-58,986	2024-06-30
American Century Companies Inc	0.943%	13.637%	559,978	67,199	2023-12-31

Mutual Fund Ownership

iShares Core S&P Small-Cap ETF is the biggest individual fund holder of Mercury Systems Inc (MRCY), owning a total of 3.2 million shares. Combined, the top 41 mutual fund holders of MRCY own 66.60% of the company with a total of 39.5 million shares.

In the latest ownership report on February 28th 2025, the top 41 fund holders increased their combined ownership of MRCY by 226 thousand shares. 3 funds bought 3,341 total additional shares and increased their ownership by an average of 0.10%. However 5 funds sold 229,744 total shares and decreased their ownership by an average of 5.45%.

Overall this is a negative sign as the number of shares owned by the top 20 mutual funds holding Mercury Systems decreased by a net total of -226,403 in the latest report.

Mutual Funds Chart

Latest Mutual Fund Ownership Changes

Owner	Percent Owned	Percent Change	Shares Owned	Share Change	Date Reported
iShares Core S&P Small-Cap ETF	5.414%	-0.024%	3,230,824	-768	2025-02-28
Vanguard Total Stock Mkt Idx Inv	2.669%	0.076%	1,593,041	1,215	2025-02-28
iShares Russell 2000 ETF	2.243%	-1.164%	1,338,785	-15,768	2025-02-28
Vanguard Small Cap Index	2.168%	0.081%	1,294,108	1,050	2025-02-28
William Blair SMID Growth CIT 1	1.490%	-10.382%	889,387	-103,037	2025-02-28
Vanguard Institutional Extnd Mkt Idx Tr	1.302%	0.139%	776,934	1,076	2025-02-28
Vanguard Small Cap Growth Index Inv	1.216%	-0.566%	725,793	-4,130	2025-02-28
SPDR® S&P Aerospace & Defense ETF	1.208%	0.000%	720,846	0	2025-02-28
William Blair Small-Mid Cap Growth I	0.999%	-15.106%	595,951	-106,041	2025-02-28
iShares US Aerospace & Defense ETF	0.954%	0.000%	569,365	0	2025-02-28
iShares S&P Small-Cap 600 Value ETF	0.948%	0.000%	565,580	0	2025-02-28

Top Mutual Funds

Owner	Percent Owned	Percent Change	Shares Owned	Share Change	Date Reported
iShares Core S&P Small-Cap ETF	5.414%	-0.024%	3,230,824	-768	2025-02-28
iShares Core S&P Mid-Cap ETF	3.190%	0.487%	1,856,415	8,991	2023-07-31
Vanguard Instl Ttl Stck Mkt Idx Tr	2.897%	2.573%	1,717,428	43,075	2023-03-31
Vanguard Total Stock Mkt Idx Inv	2.669%	0.076%	1,593,041	1,215	2025-02-28
Victory Sycamore Small Company Opp R	2.614%	18.182%	1,560,000	240,000	2024-12-31
Victory Small Cap Value CIT (Net 75)	2.616%	18.182%	1,560,000	240,000	2024-12-31
Vanguard Explorer Inv	2.563%	0.000%	1,491,214	0	2023-06-30
iShares Russell 2000 ETF	2.243%	-1.164%	1,338,785	-15,768	2025-02-28
Vanguard Small Cap Index	2.168%	0.081%	1,294,108	1,050	2025-02-28
Conestoga Small Cap Investors	2.165%	8.338%	1,291,883	99,426	2025-01-31
William Blair Sml-Mid Cap Grwth CIT Cl A	1.957%	0.000%	1,166,984	1,166,984	2024-09-30
FullerThaler Behavioral Small-Cap Value	1.821%	0.527%	1,086,481	5,698	2024-12-31
Undiscovered Managers Behavioral Val L	1.729%	0.000%	1,032,016	0	2025-01-31
William Blair Small-Mid Cap Growth CIT	1.664%	-15.186%	992,424	-177,700	2024-12-31
First Trust RBA Amer Indl RenaisTM ETF	1.573%	0.215%	938,514	2,016	2025-02-27
Baron Discovery Strategy	1.542%	0.000%	920,380	0	2024-12-31
Baron Discovery Institutional	1.542%	0.000%	920,380	0	2024-12-31
Alger Small Cap Focus Composite	1.580%	0.000%	919,513	0	2023-05-31
Alger Small Cap Focus I	1.580%	0.000%	919,513	0	2023-05-31
William Blair SMID Growth CIT 1	1.490%	-10.382%	889,387	-103,037	2025-02-28
Vanguard Extended Market Index Investor	1.397%	-0.019%	812,638	-153	2023-08-31
William Blair Small-Mid Cap Growth CITV	1.375%	0.000%	799,937	799,937	2022-12-31
Vanguard Institutional Extnd Mkt Idx Tr	1.302%	0.139%	776,934	1,076	2025-02-28
Vanguard Small Cap Growth Index Inv	1.216%	-0.566%	725,793	-4,130	2025-02-28
BNY Mellon Sm/Md Cp Gr I	1.239%	-2.179%	721,091	-16,063	2023-05-31
SPDR® S&P Aerospace & Defense ETF	1.208%	0.000%	720,846	0	2025-02-28
Ranger Small Cap	1.102%	-3.559%	653,085	-24,100	2023-09-30
Baron Small Cap Retail	1.095%	-18.750%	650,000	-150,000	2024-03-31
Baron Opp. Small Cap Growth Strategy	1.095%	-18.750%	650,000	-150,000	2024-03-31
William Blair Small-Mid Cap Growth I	0.999%	-15.106%	595,951	-106,041	2025-02-28
iShares US Aerospace & Defense ETF	0.954%	0.000%	569,365	0	2025-02-28
iShares S&P Small-Cap 600 Value ETF	0.948%	0.000%	565,580	0	2025-02-28
JHancock Small Cap Core NAV	0.950%	0.824%	547,002	4,468	2023-12-31
William Blair US SMID Growth I USD Acc	0.879%	11.505%	523,115	53,973	2024-09-30
Fidelity Small Cap Index	0.873%	-6.237%	521,060	-34,660	2024-12-31
American Century Small Cap Growth Inv	0.863%	8.872%	497,002	40,501	2023-12-31
American Century U.S. Small Cap Growth	0.863%	8.872%	497,002	40,501	2023-12-31
William Blair SMID Core CIT Class 4	0.825%	0.000%	489,783	489,783	2024-03-31
iShares Russell 2000 Value ETF	0.812%	-0.205%	484,591	-993	2025-02-26
Conestoga Small Cap Growth	0.805%	62.170%	480,286	184,124	2024-12-31
SPDR® Portfolio S&P 600 Sm Cap ETF	0.779%	0.000%	462,467	0	2024-04-30