Who owns Mercury Systems, Inc.?
Institutional ownership of MRCY from SEC Form 13F filings across 264 reporting managers. All positions are from one synchronized reporting period — 2026-06-30 books, filed up to 45 days after quarter end — so every row is comparable.
264
13F holders
$5.34B
value, 2026 filers
77.4%
of shares outstanding (46.5M sh)
49
new positions (2026 filers)
Top institutional holders
ordered by shares owned · positions as of 2026-06-30· % of fund = share of the manager's own book · % of co. = share of MRCY's shares outstanding
| # | Manager | Shares | Value | % of fund | % of co. | Δ shares QoQ |
|---|---|---|---|---|---|---|
| 1 | BlackRock, Inc. | 9.4M | $1.15B | 0.0% | 15.6% | +5.1% |
| 2 | VANGUARD PORTFOLIO MANAGEMENT LLC | 3.0M | $370.8M | 0.0% | 5% | +4.1% |
| 3 | Invesco Ltd. | 2.7M | $326.6M | 0.0% | 4.4% | +9.3% |
| 4 | VANGUARD CAPITAL MANAGEMENT LLC | 2.4M | $296.4M | 0.0% | 4% | -49.6% |
| 5 | FMR LLC | 1.8M | $225.3M | 0.0% | 3.1% | +103.8% |
| 6 | GOLDMAN SACHS GROUP INC | 1.6M | $192.8M | 0.0% | 2.6% | +31.2% |
| 7 | GEODE CAPITAL MANAGEMENT, LLC | 1.5M | $178.6M | 0.0% | 2.4% | -4.3% |
| 8 | FIRST TRUST ADVISORS LP | 1.3M | $158.9M | 0.1% | 2.2% | +11.9% |
| 9 | PRICE T ROWE ASSOCIATES INC /MD/ | 1.3M | $157,264 | 0.0% | 2.1% | +25.0% |
| 10 | Fisher Asset Management, LLC | 944,069 | $115.5M | 0.0% | 1.6% | -3.7% |
| 11 | FRANKLIN RESOURCES INC | 846,732 | $103.6M | 0.0% | 1.4% | +86.7% |
| 12 | NEUBERGER BERMAN GROUP LLC | 841,556 | $102.1M | 0.1% | 1.4% | -7.6% |
| 13 | MORGAN STANLEY | 811,565 | $99.3M | 0.0% | 1.4% | +20.9% |
| 14 | WELLINGTON MANAGEMENT GROUP LLP | 775,502 | $94.9M | 0.0% | 1.3% | +2.6% |
| 15 | VAN ECK ASSOCIATES CORP | 762,994 | $93.3M | 0.1% | 1.3% | -10.4% |
| 16 | RAYMOND JAMES FINANCIAL INC | 748,808 | $91.6M | 0.0% | 1.2% | -5.7% |
| 17 | MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. | 715,977 | $87.6M | 0.1% | 1.2% | -16.7% |
| 18 | AMERICAN CENTURY COMPANIES INC | 664,960 | $81.3M | 0.0% | 1.1% | +14.1% |
| 19 | LORD, ABBETT & CO. LLC | 661,714 | $80,947 | 0.2% | 1.1% | +3.0% |
| 20 | Sixth Street Partners Management Company, L.P.NEW | 627,581 | $76.8M | 13.3% | 1% | new |
| 21 | CHARLES SCHWAB INVESTMENT MANAGEMENT INC | 627,581 | $76.8M | 0.0% | 1% | -1.3% |
| 22 | BAMCO INC /NY/ | 606,919 | $74.2M | 0.1% | 1% | -5.9% |
| 23 | NORTHERN TRUST CORP | 597,751 | $73.1M | 0.0% | 1% | +9.1% |
| 24 | AMERIPRISE FINANCIAL INC | 499,207 | $61.1M | 0.0% | 0.8% | -49.7% |
| 25 | Allspring Global Investments Holdings, LLC | 474,866 | $58.4M | 0.1% | 0.8% | -17.2% |
Source: SEC Form 13F-HR filings (institutional managers over $100M in US-listed positions). 13Fs disclose long positions only, up to 45 days after quarter end; each manager's latest filed quarter is shown per row and dollar values are the manager's filed marks. Aggregates labeled "2026 filers" count only managers whose latest book is a 2026 quarter. Related: valuation · options positioning · supply chain. Research, not investment advice.