Mercury Systems
MRCY · NASDAQ
$74.53−$1.46 (−1.92%)TodayMarket closed ·
Prev close $75.99
Who owns MRCY
Largest institutional holders, from their latest 13F filings
The 10 largest institutions hold 48.3% of MRCY’s shares.
- BlackRock Institutional Trust Company, N.A.14.1%
- JANA Partners LLC6.6%
- State Street Investment Management (US)5.7%
- Vanguard Portfolio Management, LLC5.0%
- Next 6 largest institutions16.9%
- All other shareholders51.7%
| Holder | Shares | % of shares |
|---|---|---|
| BlackRock Institutional Trust Company, N.A. | 8.44M | 14.06% |
| JANA Partners LLC | 3.96M | 6.59% |
| State Street Investment Management (US) | 3.42M | 5.69% |
| Vanguard Portfolio Management, LLC | 3.03M | 5.05% |
| Vanguard Capital Management, LLC | 2.42M | 4.04% |
| Fidelity Management & Research Company LLC | 1.83M | 3.04% |
| T. Rowe Price Investment Management, Inc. | 1.60M | 2.66% |
| Conestoga Capital Advisors, LLC | 1.49M | 2.48% |
| Geode Capital Management, L.L.C. | 1.46M | 2.43% |
| Invesco Advisers, Inc. | 1.37M | 2.28% |
Largest mutual fund holders
| Holder | Shares | % of shares |
|---|---|---|
| iShares Core S&P Small-Cap ETF | 3.22M | 5.36% |
| Vanguard Total Stock Market Index Fund | 1.72M | 2.87% |
| First Trust RBA Amer Industrial Renaissance ETF | 1.61M | 2.67% |
| iShares Russell 2000 ETF | 1.45M | 2.42% |
| Vanguard Small-Cap Index Fund | 1.24M | 2.07% |
Insider trades
Form 4 filings by officers, directors and large holders
Over the last 6 months, insiders sold $43.59M (35 trades) of MRCY on the open market, with no buys.
| Insider | Type | Shares | Value |
|---|---|---|---|
| Nearhos Barry R | Award | 235 | — |
| KUPINSKY STUART | Sale | 1.00K | $86.52K |
| Ratner Steven | Sale | 4.00K | $338.03K |
| Ballhaus William L | Option exercise | 68.48K | — |
| Ballhaus William L | Sale | 10.81K | $970.49K |
| Ballhaus William L | Sale | 38.28K | $3.40M |
| Ballhaus William L | Option exercise | 68.48K | $2.94M |
| Ballhaus William L | Option exercise | 153.68K | — |
| Ballhaus William L | Sale | 3.45K | $303.40K |
| Ballhaus William L | Sale | 107.63K | $9.37M |
Short interest
Settled Sep 30, 2026
- Shares short
- 5.01M
- Days to cover
- 7.39
- % of shares outstanding
- 8.35%
- Average daily volume
- 678.67K
- Change since last report
- −0.4%
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