ANDOVER, MA
MERCURY SYSTEMS INCMRCY— Latest position per institution from SEC 13F filings
15
Institutional holders
58.30M
Total shares held
3.38B
Estimated value
2.92M
Avg. position size
BLACKROCK, INC.
CIK 2012383
Shares
8.92M
Value
650.38M
Filed
Mar 31, 2026
BLACKROCK FINANCE, INC.
CIK 1364742
Shares
8.81M
Value
237.75M
Filed
Jun 30, 2024
VANGUARD GROUP INC
CIK 102909
Shares
5.63M
Value
411.20M
Filed
Dec 31, 2025
JANA PARTNERS LLC
CIK 1159159
Shares
4.39M
Value
152.01M
Filed
Jun 30, 2023
JANA PARTNERS MANAGEMENT, LP
CIK 1998597
Shares
4.11M
Value
299.47M
Filed
Mar 31, 2026
STATE STREET CORP
CIK 93751
Shares
3.87M
Value
281.85M
Filed
Mar 31, 2026
VANGUARD PORTFOLIO MANAGEMENT LLC
CIK 2100121
Shares
2.91M
Value
212.23M
Filed
Mar 31, 2026
INVESCO LTD.
CIK 914208
Shares
2.44M
Value
178.02M
Filed
Mar 31, 2026
VANGUARD CAPITAL MANAGEMENT LLC
CIK 2100119
Shares
2.40M
Value
175.26M
Filed
Mar 31, 2026
STARBOARD VALUE LP
CIK 1517137
Shares
2.29M
Value
61.92M
Filed
Jun 30, 2024
CONESTOGA CAPITAL ADVISORS, LLC
CIK 1163744
Shares
1.92M
Value
139.88M
Filed
Mar 31, 2026
T. ROWE PRICE INVESTMENT MANAGEMENT, INC.
CIK 1897612
Shares
1.58M
Value
115.19K
Filed
Mar 31, 2026
GEODE CAPITAL MANAGEMENT, LLC
CIK 1214717
Shares
1.53M
Value
111.26M
Filed
Mar 31, 2026
DIMENSIONAL FUND ADVISORS LP
CIK 354204
Shares
1.23M
Value
89.52M
Filed
Mar 31, 2026
GOLDMAN SACHS GROUP INC
CIK 886982
Shares
1.20M
Value
87.57M
Filed
Mar 31, 2026
FIRST TRUST ADVISORS LP
CIK 1125816
Shares
1.16M
Value
84.63M
Filed
Mar 31, 2026
PRICE T ROWE ASSOCIATES INC /MD/
CIK 80255
Shares
1.03M
Value
75K
Filed
Mar 31, 2026
AMERIPRISE FINANCIAL INC
CIK 820027
Shares
991.81K
Value
72.31M
Filed
Mar 31, 2026
FISHER ASSET MANAGEMENT, LLC
CIK 850529
Shares
980.37K
Value
71.48M
Filed
Mar 31, 2026
NEUBERGER BERMAN GROUP LLC
CIK 1465109
Shares
910.42K
Value
66.26M
Filed
Mar 31, 2026
| # | Institution | CIK | Shares | Est. Value | Period |
|---|---|---|---|---|---|
| 1 | BLACKROCK, INC. | 2012383 | 8.92M | 650.38M | Mar 31, 2026 |
| 2 | BLACKROCK FINANCE, INC. | 1364742 | 8.81M | 237.75M | Jun 30, 2024 |
| 3 | VANGUARD GROUP INC | 102909 | 5.63M | 411.20M | Dec 31, 2025 |
| 4 | JANA PARTNERS LLC | 1159159 | 4.39M | 152.01M | Jun 30, 2023 |
| 5 | JANA PARTNERS MANAGEMENT, LP | 1998597 | 4.11M | 299.47M | Mar 31, 2026 |
| 6 | STATE STREET CORP | 93751 | 3.87M | 281.85M | Mar 31, 2026 |
| 7 | VANGUARD PORTFOLIO MANAGEMENT LLC | 2100121 | 2.91M | 212.23M | Mar 31, 2026 |
| 8 | INVESCO LTD. | 914208 | 2.44M | 178.02M | Mar 31, 2026 |
| 9 | VANGUARD CAPITAL MANAGEMENT LLC | 2100119 | 2.40M | 175.26M | Mar 31, 2026 |
| 10 | STARBOARD VALUE LP | 1517137 | 2.29M | 61.92M | Jun 30, 2024 |
| 11 | CONESTOGA CAPITAL ADVISORS, LLC | 1163744 | 1.92M | 139.88M | Mar 31, 2026 |
| 12 | T. ROWE PRICE INVESTMENT MANAGEMENT, INC. | 1897612 | 1.58M | 115.19K | Mar 31, 2026 |
| 13 | GEODE CAPITAL MANAGEMENT, LLC | 1214717 | 1.53M | 111.26M | Mar 31, 2026 |
| 14 | DIMENSIONAL FUND ADVISORS LP | 354204 | 1.23M | 89.52M | Mar 31, 2026 |
| 15 | GOLDMAN SACHS GROUP INC | 886982 | 1.20M | 87.57M | Mar 31, 2026 |
| 16 | FIRST TRUST ADVISORS LP | 1125816 | 1.16M | 84.63M | Mar 31, 2026 |
| 17 | PRICE T ROWE ASSOCIATES INC /MD/ | 80255 | 1.03M | 75K | Mar 31, 2026 |
| 18 | AMERIPRISE FINANCIAL INC | 820027 | 991.81K | 72.31M | Mar 31, 2026 |
| 19 | FISHER ASSET MANAGEMENT, LLC | 850529 | 980.37K | 71.48M | Mar 31, 2026 |
| 20 | NEUBERGER BERMAN GROUP LLC | 1465109 | 910.42K | 66.26M | Mar 31, 2026 |
Data sourced from SEC Form 13F institutional holdings reports. Positions reflect the most recent filing per institution.