Mercury Systems
MRCY
284 hedge funds and large institutions have $3.5B invested in Mercury Systems in 2025 Q2 according to their latest regulatory filings, with 56 funds opening new positions, 117 increasing their positions, 73 reducing their positions, and 22 closing their positions.
155% more first-time investments, than exits
New positions opened: 56 | Existing positions closed: 22
60% more repeat investments, than reductions
Existing positions increased: 117 | Existing positions reduced: 73
43% more call options, than puts
Call options by funds: $6.47M | Put options by funds: $4.53M
29% more capital invested
Capital invested by funds: $2.72B → $3.5B (+$782M)
13% more funds holding
Funds holding: 252 → 284 (+32)
3.06% more ownership
Funds ownership: 105.76% → 108.82% (+3.1%)
33% less funds holding in top 10
Funds holding in top 10: 3 → 2 (-1)
Top Buyers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
T. Rowe Price Investment Management
Baltimore,
Maryland
|
+$47.2M |
| 2 |
Loomis, Sayles & Company
Boston,
Massachusetts
|
+$36.9M |
| 3 |
Lord, Abbett & Co
Jersey City,
New Jersey
|
+$26.9M |
| 4 |
EA
Emerald Advisers
Leola,
Pennsylvania
|
+$22.2M |
| 5 |
SAM
Silvercrest Asset Management
New York
|
+$18.9M |
Top Sellers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
Fuller & Thaler Asset Management
San Mateo,
California
|
-$57.2M |
| 2 |
William Blair Investment Management
Chicago,
Illinois
|
-$33M |
| 3 |
BlackRock
New York
|
-$25.4M |
| 4 |
Marshall Wace
London,
United Kingdom
|
-$22.8M |
| 5 |
SCM
Scopia Capital Management
New York
|
-$20.7M |
MRCY Hedge Fund Activity: Q2 2025 in Review
284 of the 7,595 institutional investors tracked by Wall St. Rank reported a position in Mercury Systems (MRCY) for Q2 2025, worth a combined $3.5B — up 29% from $2.72B a quarter earlier.
Buyers outnumbered sellers: 56 funds opened new MRCY positions and 22 closed out — a net gain of 34 holders — while 117 added to existing stakes and 73 trimmed.
The largest buyer was T. Rowe Price Investment Management, opening a new position worth an estimated $47.2M. The largest seller was Fuller & Thaler Asset Management, cutting an estimated $57.2M.
- 284 institutional investors held Mercury Systems (MRCY) as of Q2 2025, up from 252 in Q1 2025.
- Funds reported $3.5B of Mercury Systems stock for Q2 2025, up 29% quarter-over-quarter.
- 56 funds opened new Mercury Systems positions in Q2 2025 and 22 closed out, a net change of +34 holders.
- The largest Mercury Systems buyer in Q2 2025 was T. Rowe Price Investment Management, an estimated $47.2M added.
- The largest Mercury Systems seller in Q2 2025 was Fuller & Thaler Asset Management, an estimated $57.2M sold.
Based on aggregated 13F filings for Q2 2025.