Mercury Systems Ownership | Who Owns Mercury Systems?
Mercury Systems Ownership Summary
Mercury Systems is owned by 107.32% institutional investors, 1.69% insiders. Blackrock funding, inc. /de is the largest institutional shareholder, holding 15.78% of MRCY shares. iShares Core S&P Small-Cap ETF is the top mutual fund, with 5.36% of its assets in Mercury Systems shares.
MRCY Ownership Benchmark
| Type | Name | % Inst | % Insiders | % Retail |
|---|---|---|---|---|
| Stock | Mercury Systems | 107.32% | 1.69% | -9.01% |
| Sector | Industrials Stocks | 49.20% | 16.03% | 34.77% |
| Industry | Defense Stocks | 53.37% | 11.19% | 35.44% |
Institutional Shareholders
Top Institutional Shareholders by Total Shares
| Holder | Shares | % Holding | Value |
|---|---|---|---|
| Blackrock funding, inc. /de | 9.37M | 15.78% | $1.15B |
| Blackrock | 8.81M | 15.27% | $237.75M |
| Vanguard group | 5.63M | 9.48% | $411.20M |
| Jana partners management, lp | 3.96M | 6.67% | $484.29M |
| State street | 3.42M | 5.76% | $418.05M |
| Invesco | 2.67M | 4.50% | $326.55M |
| Vanguard capital management | 2.42M | 4.08% | $296.36M |
| Fmr | 1.84M | 3.10% | $225.34M |
| T. rowe price investment management | 1.60M | 2.69% | $195.20M |
| Goldman sachs group | 1.58M | 2.65% | $192.76M |
Top Institutional Shareholders by % of Total Assets
| Holder | Shares | % Assets | Value |
|---|---|---|---|
| Jana partners management, lp | 3.96M | 25.46% | $484.29M |
| 13d management | 60.46K | 10.37% | $7.40M |
| Candelo capital management lp | 54.06K | 4.08% | $6.61M |
| Conestoga capital advisors | 1.49M | 3.96% | $181.93M |
| Freshford capital management | 93.76K | 3.92% | $11.47M |
| Deepwater asset management | 61.17K | 3.40% | $7.48M |
| American capital management | 486.06K | 2.67% | $59.46M |
| Steel partners | 66.54K | 2.27% | $1.80M |
| Sasco capital inc / ct/ | 561.03K | 2.14% | $15.14M |
| Aristotle capital boston | 244.23K | 2.00% | $29.88M |
Top Buyers
| Holder | Shares | % Assets | Change |
|---|---|---|---|
| Blackrock | 8.81M | 0.01% | 1.40M |
| Fmr | 1.84M | 0.01% | 938.43K |
| Sixth street partners management company | 627.58K | 0.01% | 627.58K |
| American capital management | 486.06K | 2.67% | 486.06K |
| Blackrock funding, inc. /de | 9.37M | 0.02% | 450.58K |
Top Sellers
| Holder | Shares | % Assets | Change |
|---|---|---|---|
| Starboard value lp | - | - | -2.29M |
| Westwood group | - | - | -787.79K |
| Clearline capital lp | - | - | -526.61K |
| Ameriprise financial | 499.21K | 0.01% | -492.60K |
| State street | 3.42M | 0.01% | -447.43K |
New Positions
| Holder | Shares | % Assets | Change | Value |
|---|---|---|---|---|
| Sixth street partners management company | 627.58K | 0.01% | 627.58K | $76.77M |
| American capital management | 486.06K | 2.67% | 486.06K | $59.46M |
| Jane street group | 115.34K | 0.00% | 115.34K | $14.11M |
| Df dent | 113.61K | 0.26% | 113.61K | $13.90M |
| Summit partners public asset management | 98.12K | 0.21% | 98.12K | $12.00M |
Sold Out
| Holder | Change |
|---|---|
| Stephens consulting | -1.00 |
| Advisory services network | -1.00 |
| True wealth design | -2.00 |
| Vermillion wealth management | -3.00 |
| Capital performance advisors llp | -4.00 |
Institutional Ownership Trends
| Date | Holdings | Change % | Shares | Change % | Ownership | Change % | Increased Position | Change % | Decreased Position | Change % |
|---|---|---|---|---|---|---|---|---|---|---|
| Mar 31, 2026 | 356 | 0.28% | 63,762,584 | -1.29% | 107 | 0.91% | 185 | 0.54% | 120 | 5.26% |
| Dec 31, 2025 | 116 | -64.95% | 12,737,056 | -80.36% | 21 | 0.18% | 47 | -73.14% | 38 | -64.81% |
| Sep 30, 2025 | 135 | -53.77% | 14,134,983 | -78.27% | 23 | 0.20% | 73 | -56.80% | 39 | -49.35% |
| Jun 30, 2025 | 288 | 12.06% | 64,959,692 | 2.93% | 110 | 0.96% | 165 | 30.95% | 77 | -13.48% |
| Mar 31, 2025 | 254 | 2.01% | 63,101,197 | -0.66% | 107 | 0.91% | 124 | 7.83% | 89 | 2.30% |
Top Mutual Funds Shareholders
| Holder | Shares | % Holding | Change |
|---|---|---|---|
| iShares Core S&P Small-Cap ETF | 3.22M | 5.36% | -901.00 |
| Vanguard Morn Total Stk Mkt Idx Investor | 1.72M | 2.86% | -8.93K |
| Vanguard Total Stock Mkt Idx Inv | 1.72M | 2.86% | -8.93K |
| Vanguard US Total Market Shares ETF | 1.60M | 2.69% | 1.79K |
| First Trust RBA Amer Indl RenaisTM ETF | 1.60M | 2.67% | 2.77K |
| Victory Small Cap Value CIT (Net 75) | 1.56M | 2.62% | 240.00K |
| iShares Russell 2000 ETF | 1.43M | 2.38% | -25.34K |
| SPDR® S&P Aerospace & Defense ETF | 1.26M | 2.10% | - |
| Victory Sycamore Small Company Opp R | 1.25M | 2.09% | -52.00K |
| Vanguard Small Cap Index | 1.24M | 2.06% | -2.98K |
Recent Insider Transactions
| Date | Name | Role | Activity | Value |
|---|---|---|---|---|
| May 26, 2026 | LANCE HOWARD L | - | Sell | $123.12K |
| May 26, 2026 | LANCE HOWARD L | - | Sell | $799.62K |
| May 12, 2026 | Carvalho Orlando D | - | Sell | $625.53K |
| May 11, 2026 | Ratner Steven | EVP, CHRO | Sell | $184.92K |
| Apr 16, 2026 | Farnsworth David E. | EVP, CFO | Sell | $307.66K |
Insider Transactions Trends
| Date | Buy | Sell |
|---|---|---|
| 2026 Q2 | - | 5 |
| 2026 Q1 | - | 7 |
| 2025 Q4 | - | 3 |
| 2025 Q3 | - | 13 |
| 2025 Q2 | - | 7 |
MRCY Ownership FAQ
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