Matrix Service Co: which funds bought and sold

Institutions that bought and sold Matrix Service shares in Q2 2026, from the holdings they reported to the SEC on Form 13F for March 31, 2026 and June 30, 2026.

Between March 31, 2026 and June 30, 2026, 89 institutions that filed 13F reports for both quarters added to or opened positions in Matrix Service, and 56 cut or closed them. Together they added a net 1.6M shares, +6.4% on what they held at the start of the quarter. Active managers and hedge funds on our list were net buyers of 1.8M shares (+25.2%); index fund managers were net buyers of 276K shares (+5.3%). 22 opened a new position and 14 sold out entirely.

Bought, Q2 2026 89 institutions, 22 of them new holders Sold, Q2 2026 56 institutions, 14 of them sold out

Net change, all compared +1.6M shares (+6.4%)

Net change, active managers +1.8M shares (+25.2%), 25 bought, 14 sold

Buyers versus sellers

institutions compared, 163

89 bought 18 56 sold

Active managers and hedge funds 25 bought · 14 sold · +1.8M

Index fund managers 8 bought · 1 sold · +276K

Other institutions 56 bought · 41 sold · −564K

Biggest buyers

by change in shares held

Biggest buyers
Institution	Change in shares	Shares June 30, 2026	Value
First Eagle Investment Management, LLC Active manager	+1.1M +132.8%	2.0M	$27.1M
Acadian Asset Management LLC Active manager	+395K +83.1%	872K	$11.9M
American Century Companies Inc Active manager	+225K +22.9%	1.2M	$16.5M
D. E. Shaw & Co., Inc. Hedge fund	+218K +313.6%	288K	$3.9M
Allspring Global Investments Holdings, LLC	+202K +246.1%	284K	$3.8M
Jpmorgan Chase & Co	+185K +67.3%	460K	$6.3M
Man Group PLC Hedge fund	+155K +399.8%	194K	$2.7M
Panagora Asset Management Inc Active manager	+143K +91.6%	299K	$4.1M
Morgan Stanley	+134K +44.4%	437K	$6M
Blackrock, Inc. Index funds	+125K +6.2%	2.1M	$29.3M
Trexquant Investment LP Hedge fund	+122K New position	122K	$1.7M
Two Sigma Investments, LP Hedge fund	+110K +17.3%	748K	$10.2M
BNP Paribas Financial Markets	+108K +62.7%	279K	$3.8M
AQR Capital Management LLC Hedge fund	+95K +19.1%	594K	$8.1M
Walleye Capital LLC Hedge fund	+72K +298.9%	96K	$1.3M
Archon Capital Management LLC	+70K New position	70K	$959,000
Algert Global LLC Hedge fund	+52K +27.0%	245K	$3.4M
Vanguard Portfolio Management LLC Index funds	+48K +25.3%	236K	$3.2M
Goldman Sachs Group Inc	+43K +15.8%	315K	$4.3M
Y-Intercept (Hong Kong) Ltd	+37K New position	37K	$500,543

Biggest buyers, active managers and hedge funds
Institution	Change in shares	Shares June 30, 2026	Value
First Eagle Investment Management, LLC Active manager	+1.1M +132.8%	2.0M	$27.1M
Acadian Asset Management LLC Active manager	+395K +83.1%	872K	$11.9M
American Century Companies Inc Active manager	+225K +22.9%	1.2M	$16.5M
D. E. Shaw & Co., Inc. Hedge fund	+218K +313.6%	288K	$3.9M
Man Group PLC Hedge fund	+155K +399.8%	194K	$2.7M
Panagora Asset Management Inc Active manager	+143K +91.6%	299K	$4.1M
Trexquant Investment LP Hedge fund	+122K New position	122K	$1.7M
Two Sigma Investments, LP Hedge fund	+110K +17.3%	748K	$10.2M
AQR Capital Management LLC Hedge fund	+95K +19.1%	594K	$8.1M
Walleye Capital LLC Hedge fund	+72K +298.9%	96K	$1.3M

Biggest sellers

by change in shares held

Biggest sellers
Institution	Change in shares	Shares June 30, 2026	Value
Westerly Capital Management, LLC	−369K −38.2%	596K	$8.2M
Millennium Management LLC Hedge fund	−341K −71.5%	136K	$1.9M
Congruence Capital, LLC	−304K Sold out	0	—
Centerbook Partners LP Hedge fund	−277K −64.3%	154K	$2.1M
Jane Street Group, LLC	−207K −66.0%	106K	$1.5M
Arrowstreet Capital, Limited Partnership Hedge fund	−144K Sold out	0	—
Azarias Capital Management, L.P.	−143K −17.5%	674K	$9.2M
Country Trust Bank	−120K −72.6%	45K	$619,747
HRT Financial LP	−96K Sold out	0	—
Russell Investments Group, Ltd.	−90K −25.3%	266K	$3.7M
Marshall Wace, LLP Hedge fund	−90K −28.7%	223K	$3.1M
Harvey Partners, LLC	−90K −9.9%	815K	$11.2M
Connor, Clark & Lunn Investment Management Ltd.	−68K −18.6%	295K	$4M
Exoduspoint Capital Management, LP Hedge fund	−53K −82.8%	11K	$149,851
Victory Capital Management Inc Active manager	−48K −39.3%	73K	$1M
Citadel Advisors LLC Hedge fund	−46K −9.7%	426K	$5.8M
Gendell Jeffrey L	−39K −3.1%	1.2M	$16.3M
Quantbot Technologies LP Hedge fund	−36K Sold out	0	—
Jacobs Levy Equity Management, Inc Active manager	−25K −7.2%	326K	$4.5M
Bailard, Inc.	−25K Sold out	0	—

Biggest sellers, active managers and hedge funds
Institution	Change in shares	Shares June 30, 2026	Value
Millennium Management LLC Hedge fund	−341K −71.5%	136K	$1.9M
Centerbook Partners LP Hedge fund	−277K −64.3%	154K	$2.1M
Arrowstreet Capital, Limited Partnership Hedge fund	−144K Sold out	0	—
Marshall Wace, LLP Hedge fund	−90K −28.7%	223K	$3.1M
Exoduspoint Capital Management, LP Hedge fund	−53K −82.8%	11K	$149,851
Victory Capital Management Inc Active manager	−48K −39.3%	73K	$1M
Citadel Advisors LLC Hedge fund	−46K −9.7%	426K	$5.8M
Quantbot Technologies LP Hedge fund	−36K Sold out	0	—
Jacobs Levy Equity Management, Inc Active manager	−25K −7.2%	326K	$4.5M
Quadrature Capital Ltd Hedge fund	−21K Sold out	0	—

New positions

largest by value

Institution	Shares	Value June 30, 2026
Trexquant Investment LPHedge fund	122K	$1.7M
Archon Capital Management LLC	70K	$959,000
Y-Intercept (Hong Kong) Ltd	37K	$500,543
Hillsdale Investment Management Inc.	29K	$395,930
Schonfeld Strategic Advisors LLCHedge fund	28K	$383,927
Magnetar Financial LLCHedge fund	20K	$275,480
Park Avenue Securities LLC	18K	$248,000
Engineers Gate Manager LPHedge fund	18K	$246,189
Balyasny Asset Management L.P.Hedge fund	18K	$245,668
Boothbay Fund Management, LLCHedge fund	17K	$230,722

Sold out

largest by value

Institution	Shares	Value March 31, 2026
Congruence Capital, LLC	304K	$3.5M
Arrowstreet Capital, Limited PartnershipHedge fund	144K	$1.7M
HRT Financial LP	96K	$1.1M
Quantbot Technologies LPHedge fund	36K	$412,878
Bailard, Inc.	25K	$283,556
Aquatic Capital Management LLC	23K	$264,316
Quadrature Capital LtdHedge fund	21K	$237,980
Susquehanna International Group, LLP	18K	$207,260
Kettle Hill Capital Management, LLC	15K	$172,257
Axq Capital, LP	12K	$141,939

Who holds the shares

13F holdings at June 30, 2026

Institutions reporting: 150
Ten largest holders: 47.4%
Index fund managers: 20.9%
Active managers and hedge funds: 35.3%

Buying and selling by type of institution, March 31, 2026 to June 30, 2026
Type	Bought	Sold	New	Sold out	Net change in shares	Net %
Active managers and hedge funds	25	14	7	3	+1.8M	+25.2%
Index fund managers	8	1	0	0	+276K	+5.3%
Other institutions	56	41	15	11	−564K	−4.8%

Active managers and hedge funds: a list we maintain of about 400 well-known stock-picking firms and hedge funds, matched by SEC registration number (CIK) and checked against the filer names each quarter. Index fund managers: the large index houses, such as BlackRock, Vanguard, State Street, Geode and Northern Trust. Every other filer (banks, brokers, wealth managers, pension funds, insurers and firms not on the list) counts as another institution. A firm that files under several SEC registrations appears once for each.

What these filings can and cannot tell you

Form 13F lists the long positions in US-listed shares held by investment managers with more than $100 million in such holdings. Managers file it up to 45 days after each quarter ends, so this page shows what funds held at the end of each quarter, not what they are doing now: a position may have changed since. Short positions, most derivatives and smaller managers are not included, and a cut can mean a fund lost clients or rebalanced rather than a view on Matrix Service.

Only managers that filed a holdings report for both quarters are compared (163 here). 4 other holders are left out: first-time or late filers, firms that changed their SEC registration, and filings that withheld positions under confidential treatment, any of which would otherwise look like a new position or a sale. Figures are as reported by each manager in the SEC's quarterly 13F data sets; option positions are excluded.

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