Security key
589378108
- Security type / class
- Equity / Common Stock
- Total 13F shares
- 59,786,742
- Total 13F value
- $2,217,503,343
- Share change
- +3,056,370
- Put/Call ratio
- 30%
- SEC-reported price per share
- $37.09
- Number of holders
- 212
- Value change
- +$116,648,980
- Number of buys
- 125
- Number of sells
- 112
- Shares outstanding
- 60,158,713
Holder snapshot
7 signals
Open additional details 1 more signal available
Security identity
Names, identifiers, and filing context for this profile.
1 source field
Report period
Q3 2023
Institutions
212
Top holders
10
MRCY full security history
Ownership snapshot
Full 13F holder table
Newer quarter: Q3 2026
MERCURY SYSTEMS INC SEC filings
MERCURY SYSTEMS INC company facts
Broader feeds
Reporting periods
Holder history for CUSIP 589378108
Recent filing periods:
Ownership snapshot
Top reported holders of MRCY - MERCURY SYSTEMS INC - Common Stock (13F + 13D/G + 3/4/5)
Grouped by holder across the latest SEC ownership disclosures. Start with comparable ownership when available, then verify the linked 13F, 13D/G, or 3/4/5 evidence.
Comparable stake leader
BlackRock Finance, Inc.
Disclosed value leader
BlackRock Finance, Inc.
Comparable rows
0/15
Latest evidence
18 Aug 2023
13F
3/4/5
Highest disclosed value: $200,401,696
15 rows are not safely comparable across share classes.
Showing 1-6 of 15 holder rows.
Quick read
BlackRock Finance, Inc. has the largest disclosed position value at $200.4M.
0 of 15 rows have a safely comparable ownership percentage. Use this as a filing-backed starting point, then open the detailed table for source links, reporting role, position value, share count, and filing date.
Open SEC evidence
Opens BlackRock Finance, Inc.'s linked filing trail.
Disclosed position value
Top 5
BlackRock Finance, Inc.
$200.4M
WILLIAM BLAIR INVESTMENT MANAGEME...
$185.84M
VANGUARD GROUP INC
$179.4M
JANA PARTNERS LLC
$173.84M
Starboard Value LP
$98.1M
Value bars compare disclosed positions; verify each figure against the linked filing evidence.
Detailed SEC evidence table Showing 1-6 of 15 holder rows
| Holder | Evidence | Ownership % | Position | 12M Net Δ | As of |
|---|---|---|---|---|---|
| BlackRock Finance, Inc. |
13F
Company
|
—
denominator unverified
|
$200,401,696
5,793,631 shares
|
— | 30 Jun 2023 |
| WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC |
13F
Company
|
—
denominator unverified
|
$185,840,206
5,372,657 shares
|
— | 30 Jun 2023 |
| VANGUARD GROUP INC |
13F
Company
|
—
denominator unverified
|
$179,398,717
5,186,433 shares
|
— | 30 Jun 2023 |
| JANA PARTNERS LLC |
3/4/5
13F
Director, Other* · Company
|
—
denominator unverified
|
$173,843,076
4,711,386 shares
|
— | 18 Aug 2023 |
| Starboard Value LP |
13F
Company
|
—
denominator unverified
|
$98,097,240
2,836,000 shares
|
— | 30 Jun 2023 |
| STATE STREET CORP |
13F
Company
|
—
denominator unverified
|
$89,276,237
2,580,984 shares
|
— | 30 Jun 2023 |
How to read this table
Rows are grouped by holder and ranked first by SEC-reported ownership % when it is safely comparable, then by disclosed holdings value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.
13F holder rows
Institutional holders as of Q3 2023
Investor-level positions for this CUSIP, loaded as an interactive table.
Institutions
212
Shares
59,786,742
Rows available
212
| Investor | Option | Weight % | Change % | SEC-reported value | * Price | Shares | Share Change | Activity | Report Period |
|---|
* SEC-reported price is the security price as of the portfolio date and can indicate the last known price at which the security was still held. The marker flags a reported price that did not pass the local price check.
Compare Q3 2023 vs Q2 2023 Across Filers
Q2 2023 holders
226
Q3 2023 holders
212
Holder diff
-14
| Investor | Q2 2023 Shares | Q3 2023 Shares | Share Diff | Share Chg % | Q2 2023 value | Q3 2023 value | Value change | Value Chg % |
|---|
Trend: ostatnie 8 kwartałów (+ wybrane okresy porównania).
Quarterly Holders Trend
Quarterly Value Trend
Quarterly Shares Trend