MATRIX SVC CO (MTRX): Ownership & Insider Activity
Hedge funds and institutional managers reporting a position in MTRX · Energy. Based on the most recent 13F filing from each holder, sourced from SEC EDGAR.
Reported Holders
18
13F filers
Aggregate Value
$60.5M
Across holders
Last Price
$10.70
2026-08-24
Sector
Energy
GICS
Quarterly fund activity13 increased5 reduced1 exited
Full exits: ARROWSTREET CAPITAL, LIMITED PARTNERSHIP
| Manager⇅ | Type⇅ | Shares⇅ | Market Value▼ | % of Total⇅ | % of Portfolio⇅ | Action⇅ | QoQ Change⇅ | Quarter⇅ |
|---|---|---|---|---|---|---|---|---|
| First Eagle Investment Management, LLC CIK 0001325447 | Institutional Manager | 990K | $13.6M | 22.4% | 0.0% | Added | $-9.7M | Q2 2026 |
| TWO SIGMA INVESTMENTS, LP CIK 0001179392 | Hedge Fund | 748K | $10.2M | 16.9% | 0.0% | Added | +$1.5M | Q2 2026 |
| AQR CAPITAL MANAGEMENT LLC CIK 0001167557 | Hedge Fund | 594K | $8.1M | 13.4% | 0.0% | Added | +$8.1M | Q2 2026 |
| CITADEL ADVISORS LLC CIK 0001423053 | Hedge Fund | 426K | $5.8M | 9.6% | 0.0% | Reduced | +$3.5M | Q2 2026 |
| SHAW D E & CO INC CIK 0001009207 | Hedge Fund | 288K | $3.9M | 6.5% | 0.0% | Added | +$3.0M | Q2 2026 |
| RENAISSANCE TECHNOLOGIES LLC CIK 0001037389 | Hedge Fund | 283K | $3.9M | 6.4% | 0.0% | Added | +$367K | Q2 2026 |
| Qube Research & Technologies Ltd CIK 0001729829 | Hedge Fund | 226K | $3.1M | 5.1% | 0.0% | Added | +$73K | Q2 2026 |
| MARSHALL WACE, LLP CIK 0001318757 | Hedge Fund | 223K | $3.1M | 5.1% | 0.0% | Reduced | $-4.9M | Q2 2026 |
| Man Group plc CIK 0001637460 | Hedge Fund | 194K | $2.7M | 4.4% | 0.0% | Added | +$2.1M | Q2 2026 |
| MILLENNIUM MANAGEMENT LLC CIK 0001273087 | Hedge Fund | 136K | $1.9M | 3.1% | 0.0% | Reduced | $-4.7M | Q2 2026 |
Added
Institutional Manager
$13.6M· 22.4% of total· 0.0% port· 990K sh· $-9.7M QoQ· Q2 2026
Added
Hedge Fund
$10.2M· 16.9% of total· 0.0% port· 748K sh· +$1.5M QoQ· Q2 2026
Added
Hedge Fund
$8.1M· 13.4% of total· 0.0% port· 594K sh· +$8.1M QoQ· Q2 2026
Reduced
Hedge Fund
$5.8M· 9.6% of total· 0.0% port· 426K sh· +$3.5M QoQ· Q2 2026
Added
Hedge Fund
$3.9M· 6.5% of total· 0.0% port· 288K sh· +$3.0M QoQ· Q2 2026
Added
Hedge Fund
$3.9M· 6.4% of total· 0.0% port· 283K sh· +$367K QoQ· Q2 2026
Added
Hedge Fund
$3.1M· 5.1% of total· 0.0% port· 226K sh· +$73K QoQ· Q2 2026
Reduced
Hedge Fund
$3.1M· 5.1% of total· 0.0% port· 223K sh· $-4.9M QoQ· Q2 2026
Added
Hedge Fund
$2.7M· 4.4% of total· 0.0% port· 194K sh· +$2.1M QoQ· Q2 2026
Reduced
Hedge Fund
$1.9M· 3.1% of total· 0.0% port· 136K sh· $-4.7M QoQ· Q2 2026
Added
Hedge Fund
$1.3M· 2.2% of total· 0.0% port· 96K sh· +$988K QoQ· Q2 2026
Added
Hedge Fund
$775K· 1.3% of total· 0.0% port· 57K sh· +$470K QoQ· Q2 2026
Reduced
Hedge Fund
$703K· 1.2% of total· 0.0% port· 51K sh· $-20K QoQ· Q2 2026
Reduced
Hedge Fund
$397K· 0.7% of total· 0.0% port· 29K sh· $-15K QoQ· Q2 2026
Added
Hedge Fund
$384K· 0.6% of total· 0.0% port· 28K sh· — QoQ· Q2 2026
Added
Hedge Fund
$275K· 0.5% of total· 0.0% port· 20K sh· — QoQ· Q2 2026
Added
Hedge Fund
$246K· 0.4% of total· 0.0% port· 18K sh· — QoQ· Q2 2026
Added
Hedge Fund
$150K· 0.2% of total· 0.0% port· 11K sh· — QoQ· Q2 2026
1–10 of 18
1 / 2
Loading recent insider activity…