Skip to main content
MRCY logo

MRCY · Mercury Systems Inc · Holdings

Track MRCY — free
$79.49 +0.97 (+1.24%) At close · Oct 9
Market Cap
$4.78B
Shares
60.14M
Volume · Oct 9 294.46K Avg daily vol (3M) 689.71K

Institutional ownership from SEC Form 13F filings. Investment managers with more than $100 million in U.S. equities must disclose their positions every quarter, within 45 days of quarter-end, so the holdings shown can lag the market by up to a quarter.

Some SEC filings for this period have not finished importing. Holder totals and changes may be incomplete; these filings remain queued for recovery.
The Sep 30, 2026 filing window is still open — showing the latest known positions. Funds that have not filed yet carry their prior-quarter positions; a fund that filed without this stock counts as sold out. Each fund's Change is measured against its own previous reported quarter, shown in the Reported column. Pick a completed quarter in the Quarter selector below to put every fund on one quarter and see the stock-wide activity breakdown.
Holders: 394
Total Value: $8,054,385,202
Total Shares: 65,866,025
Showing 1–100 of 405 holdings by value · page 1 of 5

Institutional Ownership Trend

27 quarters

Holder Concentration

Across 397 13F filers
Top Holder
14.2%
Sep 2023 → Jun 2026 · range 11.8% – 14.2%
of institutional value
Top 5
34.1%
Sep 2023 → Jun 2026 · range 34.0% – 49.9%
of institutional value
Top 10
47.6%
Sep 2023 → Jun 2026 · range 47.3% – 63.5%
of institutional value
HHI
388
Sep 2023 → Jun 2026 · range 376 – 606
Broadly held
Showing 100 of 405
Export CSV
Holder Value (USD) % of 13F Shares Open
Key facts CIK 1049521 CUSIP 589378108 13F (30d) 11 filings 11 filers Visit website Investor relations