MTDR US Equity

Matador Resources Co

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Energy · Crude Petroleum & Natural Gas · CIK 1520006 · FYE 1231

$48.66

+2.54 (+5.51%)

USD · as of 2026-07-29 · marketstack

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Institutional ownership· 13F filers holding MTDR · 2026-Q1 methodology → sources →

491 holders

% of shares outstanding held

94.3%

Shares held (13F)

117,055,894

Reporting holders

491

Top holders

largest 100 of 491 · Δ vs 2025-Q4

#	Holder	Shares	Value	% of shares out	Δ QoQ
1	BlackRock, Inc.	11,137,65111.1M	$704M	8.97%	ADD 3%
2	VANGUARD PORTFOLIO MANAGEMENT LLC	8,464,4008.5M	$535M	6.82%	NEW†
3	DIMENSIONAL FUND ADVISORS LP	6,948,1046.9M	$439M	5.60%	ADD 4%
4	STATE STREET CORP	5,133,5665.1M	$324M	4.13%	ADD 11%
5	VANGUARD CAPITAL MANAGEMENT LLC	5,071,3485.1M	$320M	4.08%	NEW†
6	WELLINGTON MANAGEMENT GROUP LLP	3,996,5014.0M	$252M	3.22%	ADD 17%
7	LSV ASSET MANAGEMENT	3,847,9313.8M	$243M	3.10%	—
8	T. Rowe Price Investment Management, Inc.	3,744,7923.7M	$237M	3.02%	TRIM -22%
9	ADAGE CAPITAL PARTNERS GP, L.L.C.	3,035,9973.0M	$192M	2.44%	TRIM -10%
10	GEODE CAPITAL MANAGEMENT, LLC	2,329,0202.3M	$147M	1.88%	ADD 4%
11	AMERICAN CENTURY COMPANIES INC	2,215,4592.2M	$140M	1.78%	ADD 22%
12	MORGAN STANLEY	2,169,9402.2M	$137M	1.75%	TRIM -8%
13	ALLIANCEBERNSTEIN L.P.	2,657,2082.7M	$113M	2.14%	ADD 3%
14	FIRST TRUST ADVISORS LP	1,595,4151.6M	$101M	1.28%	ADD 103%
15	GW&K Investment Management, LLC	1,558,5641.6M	$98M	1.26%	—
16	AQR CAPITAL MANAGEMENT LLC	1,540,3321.5M	$97M	1.24%	ADD 38%
17	SILVERCREST ASSET MANAGEMENT GROUP LLC	1,399,0661.4M	$88M	1.13%	TRIM -8%
18	CIBC Bancorp USA Inc.	1,366,4911.4M	$86M	1.10%	NEW
19	BECK MACK & OLIVER LLC	1,358,5321.4M	$86M	1.09%	TRIM -5%
20	NOMURA ASSET MANAGEMENT INTERNATIONAL INC.	1,344,8771.3M	$85M	1.08%	ADD 34%
21	Copeland Capital Management, LLC	1,304,4511.3M	$82M	1.05%	TRIM -9%
22	CHARLES SCHWAB INVESTMENT MANAGEMENT INC	1,275,7061.3M	$81M	1.03%	ADD 4%
23	Invesco Ltd.	1,265,5581.3M	$80M	1.02%	ADD 113%
24	Driehaus Capital Management LLC	1,189,0541.2M	$75M	0.96%	NEW
25	Bank of New York Mellon Corp	1,186,0461.2M	$75M	0.96%	ADD 2%
26	Thrivent Financial for Lutherans	1,159,0481.2M	$73M	0.93%	ADD 10%
27	MASSACHUSETTS FINANCIAL SERVICES CO /MA/	1,012,5671.0M	$67M	0.82%	TRIM -20%
28	VICTORY CAPITAL MANAGEMENT INC	1,040,3201.0M	$66M	0.84%	TRIM -13%
29	NORTHERN TRUST CORP	1,017,3221.0M	$64M	0.82%	ADD 2%
30	VAUGHAN NELSON INVESTMENT MANAGEMENT, L.P.	1,013,8251.0M	$64M	0.82%	TRIM -8%
31	Clearbridge Investments, LLC	1,006,3251.0M	$64M	0.81%	TRIM -43%
32	FRANKLIN RESOURCES INC	997,261997,261	$63M	0.80%	ADD 19%
33	Nuveen, LLC	934,707934,707	$59M	0.75%	—
34	Sagefield Capital LP	887,071887,071	$56M	0.71%	TRIM -21%
35	JPMORGAN CHASE & CO	855,409855,409	$55M	0.69%	ADD 62%
36	VALUE HOLDINGS MANAGEMENT CO. LLC	834,308834,308	$53M	0.67%	ADD 9%
37	Fisher Asset Management, LLC	830,292830,292	$52M	0.67%	ADD 20%
38	FRONTIER CAPITAL MANAGEMENT CO LLC	823,306823,306	$52M	0.66%	ADD 8%
39	BANK OF AMERICA CORP /DE/	808,526808,526	$51M	0.65%	TRIM -31%
40	Champlain Investment Partners, LLC	744,805744,805	$47M	0.60%	NEW
41	VANGUARD FIDUCIARY TRUST CO	722,096722,096	$46M	0.58%	NEW
42	Boston Trust Walden Corp	699,661699,661	$44M	0.56%	TRIM -7%
43	PRICE T ROWE ASSOCIATES INC /MD/	679,339679,339	$43M	0.55%	ADD 53%
44	WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC	622,880622,880	$39M	0.50%	ADD 50%
45	Hodges Capital Management Inc.	607,264607,264	$38M	0.49%	ADD 11%
46	UBS Group AG	606,350606,350	$38M	0.49%	TRIM -6%
47	SEGALL BRYANT & HAMILL, LLC	603,703603,703	$38M	0.49%	TRIM -19%
48	FEARNLEY ASSET MANAGEMENT AS	514,700514,700	$33M	0.41%	NEW
49	ARROWSTREET CAPITAL, LIMITED PARTNERSHIP	489,148489,148	$31M	0.39%	NEW
50	Universal- Beteiligungs- und Servicegesellschaft mbH	462,549462,549	$29M	0.37%	ADD 98%
51	Goehring & Rozencwajg Associates, LLC	457,894457,894	$29M	0.37%	ADD 33%
52	Allspring Global Investments Holdings, LLC	460,080460,080	$28M	0.37%	ADD 638%
53	BESSEMER GROUP INC	435,426435,426	$28M	0.35%	ADD 11%
54	ROYAL BANK OF CANADA	410,339410,339	$26M	0.33%	TRIM -10%
55	TimesSquare Capital Management, LLC	407,676407,676	$26M	0.33%	ADD 6%
56	PUBLIC EMPLOYEES RETIREMENT ASSOCIATION OF COLORADO	398,333398,333	$25M	0.32%	TRIM -6%
57	Yaupon Capital Management LP	389,909389,909	$25M	0.31%	TRIM -46%
58	SEI INVESTMENTS CO	384,098384,098	$24M	0.31%	ADD 100%
59	ENVESTNET ASSET MANAGEMENT INC	346,546346,546	$22M	0.28%	ADD 16%
60	SHAPIRO CAPITAL MANAGEMENT LLC	333,630333,630	$21M	0.27%	ADD 36%
61	Lummis Asset Management, LP	332,594332,594	$21M	0.27%	—
62	Retirement Systems of Alabama	328,110328,110	$21M	0.26%	—
63	GOLDMAN SACHS GROUP INC	326,426326,426	$21M	0.26%	TRIM -36%
64	ROYCE & ASSOCIATES LP	324,132324,132	$20M	0.26%	ADD 2%
65	OBERWEIS ASSET MANAGEMENT INC/	312,700312,700	$20M	0.25%	ADD 23%
66	RHUMBLINE ADVISERS	308,412308,412	$19M	0.25%	—
67	MetLife Investment Management, LLC	301,073301,073	$19M	0.24%	ADD 16%
68	South Dakota Investment Council	294,267294,267	$19M	0.24%	TRIM -7%
69	CRAMER ROSENTHAL MCGLYNN LLC	291,698291,698	$18M	0.23%	TRIM -7%
70	SCHRODER INVESTMENT MANAGEMENT GROUP	276,662276,662	$18M	0.22%	NEW
71	Madison Asset Management, LLC	280,699280,699	$18M	0.23%	ADD 27%
72	Susquehanna Portfolio Strategies, LLC	267,955267,955	$17M	0.22%	ADD 30%
73	PRINCIPAL FINANCIAL GROUP INC	260,756260,756	$16M	0.21%	ADD 4%
74	AMERIPRISE FINANCIAL INC	257,029257,029	$16M	0.21%	—
75	California Public Employees Retirement System	254,670254,670	$16M	0.21%	ADD 17%
76	ADVISORY RESEARCH INC	245,480245,480	$16M	0.20%	ADD 994%
77	Swiss National Bank	233,202233,202	$15M	0.19%	—
78	Pathstone Holdings, LLC	223,433223,433	$14M	0.18%	TRIM -5%
79	NATIXIS ADVISORS, LLC	221,708221,708	$14M	0.18%	ADD 7%
80	STATE OF WISCONSIN INVESTMENT BOARD	216,336216,336	$14M	0.17%	TRIM -10%
81	Ceredex Value Advisors LLC	198,750198,750	$13M	0.16%	TRIM -42%
82	Treasurer of the State of North Carolina	195,023195,023	$12M	0.16%	ADD 8%
83	NFJ INVESTMENT GROUP, LLC	187,021187,021	$12M	0.15%	—
84	UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC	186,888186,888	$12M	0.15%	—
85	NEW YORK STATE COMMON RETIREMENT FUND	186,785186,785	$12M	0.15%	NEW
86	River Road Asset Management, LLC	177,842177,842	$11M	0.14%	NEW
87	Verition Fund Management LLC	174,449174,449	$11M	0.14%	ADD 12%
88	Oxbow Advisors, LLC	163,148163,148	$10M	0.13%	ADD 7%
89	BARCLAYS PLC	160,232160,232	$10M	0.13%	TRIM -19%
90	HEARTLAND ADVISORS INC	152,283152,283	$10M	0.12%	TRIM -28%
91	RAYMOND JAMES FINANCIAL INC	151,793151,793	$10M	0.12%	TRIM -30%
92	MILLENNIUM MANAGEMENT LLC	142,062142,062	$9M	0.11%	TRIM -89%
93	Corigliano Investment Advisers, LLC	140,200140,200	$9M	0.11%	TRIM -44%
94	Russell Investments Group, Ltd.	135,684135,684	$9M	0.11%	—
95	FIRST SABREPOINT CAPITAL MANAGEMENT LP	135,000135,000	$9M	0.11%	NEW
96	CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM	133,468133,468	$8M	0.11%	ADD 19%
97	Creative Planning	133,233133,233	$8M	0.11%	ADD 50%
98	SG Americas Securities, LLC	128,744128,744	$8M	0.10%	ADD 28%
99	Legal & General Group Plc	126,447126,447	$8M	0.10%	TRIM -22%
100	Rafferty Asset Management, LLC	125,691125,691	$8M	0.10%	ADD 25%

† a filer this large appearing as NEW usually reflects a renamed or succeeded filing entity (the old name stops filing the same quarter) — not a brand-new position.

Rows rank by the value each filer reported — 13F filers price their own positions, so a holder with fewer shares can rank just above one with more.

Holder trends· top 15 holders · shares held over 6 quarters

green added · red trimmed

Holder

2024-Q4

2025-Q1

2025-Q2

2025-Q3

2025-Q4

2026-Q1

Latest value

BlackRock, Inc.

11.7M

11.4M

11.2M

10.5M

10.8M

11.1M

$704M

VANGUARD PORTFOLIO MANAGEMENT LLC

—

8.5M

$535M

DIMENSIONAL FUND ADVISORS LP

5.4M

5.5M

6.2M

6.4M

6.7M

6.9M

$439M

STATE STREET CORP

4.6M

4.7M

4.6M

4.5M

4.6M

5.1M

$324M

VANGUARD CAPITAL MANAGEMENT LLC

—

5.1M

$320M

WELLINGTON MANAGEMENT GROUP LLP

1.6M

2.0M

1.9M

2.1M

3.4M

4.0M

$252M

LSV ASSET MANAGEMENT

1.5M

2.3M

3.3M

3.5M

3.8M

$243M

T. Rowe Price Investment Management, Inc.

3.8M

3.5M

3.7M

4.8M

3.7M

$237M

ADAGE CAPITAL PARTNERS GP, L.L.C.

50K

1.1M

2.6M

3.0M

3.4M

3.0M

$192M

GEODE CAPITAL MANAGEMENT, LLC

2.0M

2.1M

2.2M

2.3M

$147M

AMERICAN CENTURY COMPANIES INC

607K

670K

720K

901K

1.8M

2.2M

$140M

MORGAN STANLEY

1.2M

1.8M

2.8M

2.4M

2.2M

$137M

ALLIANCEBERNSTEIN L.P.

2.7M

2.6M

2.5M

2.6M

2.7M

$113M

FIRST TRUST ADVISORS LP

709K

627K

617K

623K

785K

1.6M

$101M

GW&K Investment Management, LLC

1.8M

1.7M

1.6M

$98M

Shares reported each quarter by the largest current holders. Green = added vs the prior filing, red = trimmed, grey = roughly held; a dash is a quarter with no 13F on file (a gap is skipped, not read as an exit). 13F is filed up to 45 days after quarter-end. Up to 40 quarters (10 years) available — use the selector above.

Institutional footprint by quarter

Line breaks are honest gaps — quarters with no 13F record, or a suppressed % — never interpolated. % of shares outstanding uses today's share count for every quarter (the only count stored).

Quarter	Holders	Shares held	% shares out	Value held
2026-Q1	491	117,055,894	94.3%	$7.3B
2025-Q4

Short interest has its own tab now — open SI →

Source: SEC Form 13F — every institution manager (≥ $100M in 13F securities) reporting a long US-listed position, across ~10,250 filers over 10 years of history. 13F is long-only, US-listed, filed up to 45 days after quarter-end.

Activists & large holders· Schedule 13D/G beneficial owners · MTDR

Large holders — 13G, passive (top 3 by % of class)

Holder	% of class	Type	As of
VANGUARD PORTFOLIO MANAGEMENT LLC	6.86%	QII	2026-03-31	SEC →
DIMENSIONAL FUND ADVISORS LP	5.2%	QII	2025-09-30	SEC →
VANGUARD GROUP INC	0%	QII	2026-03-13	SEC →

Source: SEC Schedule 13D/13G structured XML. 13D = active intent; 13G filers report passively (Rule 13d-1(b) QII / 13d-1(c) Passive / 13d-1(d) Exempt) and are not activists. Percent and delta are the group aggregate the filing reports. Structured 13D/G coverage begins December 2024 (SEC XML mandate).

Institutional ownership· 13F filers holding MTDR · 2026-Q1 methodology → sources →

491 holders

% of shares outstanding held

94.3%

Shares held (13F)

117,055,894

Reporting holders

491

Top holders

largest 100 of 491 · Δ vs 2025-Q4

#	Holder	Shares	Value	% of shares out	Δ QoQ
1	BlackRock, Inc.	11,137,65111.1M	$704M	8.97%	ADD 3%
2	VANGUARD PORTFOLIO MANAGEMENT LLC	8,464,4008.5M	$535M	6.82%	NEW†
3	DIMENSIONAL FUND ADVISORS LP	6,948,1046.9M	$439M	5.60%	ADD 4%
4	STATE STREET CORP	5,133,5665.1M	$324M	4.13%	ADD 11%
5	VANGUARD CAPITAL MANAGEMENT LLC	5,071,3485.1M	$320M	4.08%	NEW†
6	WELLINGTON MANAGEMENT GROUP LLP	3,996,5014.0M	$252M	3.22%	ADD 17%
7	LSV ASSET MANAGEMENT	3,847,9313.8M	$243M	3.10%	—
8	T. Rowe Price Investment Management, Inc.	3,744,7923.7M	$237M	3.02%	TRIM -22%
9	ADAGE CAPITAL PARTNERS GP, L.L.C.	3,035,9973.0M	$192M	2.44%	TRIM -10%
10	GEODE CAPITAL MANAGEMENT, LLC	2,329,0202.3M	$147M	1.88%	ADD 4%
11	AMERICAN CENTURY COMPANIES INC	2,215,4592.2M	$140M	1.78%	ADD 22%
12	MORGAN STANLEY	2,169,9402.2M	$137M	1.75%	TRIM -8%
13	ALLIANCEBERNSTEIN L.P.	2,657,2082.7M	$113M	2.14%	ADD 3%
14	FIRST TRUST ADVISORS LP	1,595,4151.6M	$101M	1.28%	ADD 103%
15	GW&K Investment Management, LLC	1,558,5641.6M	$98M	1.26%	—
16	AQR CAPITAL MANAGEMENT LLC	1,540,3321.5M	$97M	1.24%	ADD 38%
17	SILVERCREST ASSET MANAGEMENT GROUP LLC	1,399,0661.4M	$88M	1.13%	TRIM -8%
18	CIBC Bancorp USA Inc.	1,366,4911.4M	$86M	1.10%	NEW
19	BECK MACK & OLIVER LLC	1,358,5321.4M	$86M	1.09%	TRIM -5%
20	NOMURA ASSET MANAGEMENT INTERNATIONAL INC.	1,344,8771.3M	$85M	1.08%	ADD 34%
21	Copeland Capital Management, LLC	1,304,4511.3M	$82M	1.05%	TRIM -9%
22	CHARLES SCHWAB INVESTMENT MANAGEMENT INC	1,275,7061.3M	$81M	1.03%	ADD 4%
23	Invesco Ltd.	1,265,5581.3M	$80M	1.02%	ADD 113%
24	Driehaus Capital Management LLC	1,189,0541.2M	$75M	0.96%	NEW
25	Bank of New York Mellon Corp	1,186,0461.2M	$75M	0.96%	ADD 2%
26	Thrivent Financial for Lutherans	1,159,0481.2M	$73M	0.93%	ADD 10%
27	MASSACHUSETTS FINANCIAL SERVICES CO /MA/	1,012,5671.0M	$67M	0.82%	TRIM -20%
28	VICTORY CAPITAL MANAGEMENT INC	1,040,3201.0M	$66M	0.84%	TRIM -13%
29	NORTHERN TRUST CORP	1,017,3221.0M	$64M	0.82%	ADD 2%
30	VAUGHAN NELSON INVESTMENT MANAGEMENT, L.P.	1,013,8251.0M	$64M	0.82%	TRIM -8%
31	Clearbridge Investments, LLC	1,006,3251.0M	$64M	0.81%	TRIM -43%
32	FRANKLIN RESOURCES INC	997,261997,261	$63M	0.80%	ADD 19%
33	Nuveen, LLC	934,707934,707	$59M	0.75%	—
34	Sagefield Capital LP	887,071887,071	$56M	0.71%	TRIM -21%
35	JPMORGAN CHASE & CO	855,409855,409	$55M	0.69%	ADD 62%
36	VALUE HOLDINGS MANAGEMENT CO. LLC	834,308834,308	$53M	0.67%	ADD 9%
37	Fisher Asset Management, LLC	830,292830,292	$52M	0.67%	ADD 20%
38	FRONTIER CAPITAL MANAGEMENT CO LLC	823,306823,306	$52M	0.66%	ADD 8%
39	BANK OF AMERICA CORP /DE/	808,526808,526	$51M	0.65%	TRIM -31%
40	Champlain Investment Partners, LLC	744,805744,805	$47M	0.60%	NEW
41	VANGUARD FIDUCIARY TRUST CO	722,096722,096	$46M	0.58%	NEW
42	Boston Trust Walden Corp	699,661699,661	$44M	0.56%	TRIM -7%
43	PRICE T ROWE ASSOCIATES INC /MD/	679,339679,339	$43M	0.55%	ADD 53%
44	WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC	622,880622,880	$39M	0.50%	ADD 50%
45	Hodges Capital Management Inc.	607,264607,264	$38M	0.49%	ADD 11%
46	UBS Group AG	606,350606,350	$38M	0.49%	TRIM -6%
47	SEGALL BRYANT & HAMILL, LLC	603,703603,703	$38M	0.49%	TRIM -19%
48	FEARNLEY ASSET MANAGEMENT AS	514,700514,700	$33M	0.41%	NEW
49	ARROWSTREET CAPITAL, LIMITED PARTNERSHIP	489,148489,148	$31M	0.39%	NEW
50	Universal- Beteiligungs- und Servicegesellschaft mbH	462,549462,549	$29M	0.37%	ADD 98%
51	Goehring & Rozencwajg Associates, LLC	457,894457,894	$29M	0.37%	ADD 33%
52	Allspring Global Investments Holdings, LLC	460,080460,080	$28M	0.37%	ADD 638%
53	BESSEMER GROUP INC	435,426435,426	$28M	0.35%	ADD 11%
54	ROYAL BANK OF CANADA	410,339410,339	$26M	0.33%	TRIM -10%
55	TimesSquare Capital Management, LLC	407,676407,676	$26M	0.33%	ADD 6%
56	PUBLIC EMPLOYEES RETIREMENT ASSOCIATION OF COLORADO	398,333398,333	$25M	0.32%	TRIM -6%
57	Yaupon Capital Management LP	389,909389,909	$25M	0.31%	TRIM -46%
58	SEI INVESTMENTS CO	384,098384,098	$24M	0.31%	ADD 100%
59	ENVESTNET ASSET MANAGEMENT INC	346,546346,546	$22M	0.28%	ADD 16%
60	SHAPIRO CAPITAL MANAGEMENT LLC	333,630333,630	$21M	0.27%	ADD 36%
61	Lummis Asset Management, LP	332,594332,594	$21M	0.27%	—
62	Retirement Systems of Alabama	328,110328,110	$21M	0.26%	—
63	GOLDMAN SACHS GROUP INC	326,426326,426	$21M	0.26%	TRIM -36%
64	ROYCE & ASSOCIATES LP	324,132324,132	$20M	0.26%	ADD 2%
65	OBERWEIS ASSET MANAGEMENT INC/	312,700312,700	$20M	0.25%	ADD 23%
66	RHUMBLINE ADVISERS	308,412308,412	$19M	0.25%	—
67	MetLife Investment Management, LLC	301,073301,073	$19M	0.24%	ADD 16%
68	South Dakota Investment Council	294,267294,267	$19M	0.24%	TRIM -7%
69	CRAMER ROSENTHAL MCGLYNN LLC	291,698291,698	$18M	0.23%	TRIM -7%
70	SCHRODER INVESTMENT MANAGEMENT GROUP	276,662276,662	$18M	0.22%	NEW
71	Madison Asset Management, LLC	280,699280,699	$18M	0.23%	ADD 27%
72	Susquehanna Portfolio Strategies, LLC	267,955267,955	$17M	0.22%	ADD 30%
73	PRINCIPAL FINANCIAL GROUP INC	260,756260,756	$16M	0.21%	ADD 4%
74	AMERIPRISE FINANCIAL INC	257,029257,029	$16M	0.21%	—
75	California Public Employees Retirement System	254,670254,670	$16M	0.21%	ADD 17%
76	ADVISORY RESEARCH INC	245,480245,480	$16M	0.20%	ADD 994%
77	Swiss National Bank	233,202233,202	$15M	0.19%	—
78	Pathstone Holdings, LLC	223,433223,433	$14M	0.18%	TRIM -5%
79	NATIXIS ADVISORS, LLC	221,708221,708	$14M	0.18%	ADD 7%
80	STATE OF WISCONSIN INVESTMENT BOARD	216,336216,336	$14M	0.17%	TRIM -10%
81	Ceredex Value Advisors LLC	198,750198,750	$13M	0.16%	TRIM -42%
82	Treasurer of the State of North Carolina	195,023195,023	$12M	0.16%	ADD 8%
83	NFJ INVESTMENT GROUP, LLC	187,021187,021	$12M	0.15%	—
84	UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC	186,888186,888	$12M	0.15%	—
85	NEW YORK STATE COMMON RETIREMENT FUND	186,785186,785	$12M	0.15%	NEW
86	River Road Asset Management, LLC	177,842177,842	$11M	0.14%	NEW
87	Verition Fund Management LLC	174,449174,449	$11M	0.14%	ADD 12%
88	Oxbow Advisors, LLC	163,148163,148	$10M	0.13%	ADD 7%
89	BARCLAYS PLC	160,232160,232	$10M	0.13%	TRIM -19%
90	HEARTLAND ADVISORS INC	152,283152,283	$10M	0.12%	TRIM -28%
91	RAYMOND JAMES FINANCIAL INC	151,793151,793	$10M	0.12%	TRIM -30%
92	MILLENNIUM MANAGEMENT LLC	142,062142,062	$9M	0.11%	TRIM -89%
93	Corigliano Investment Advisers, LLC	140,200140,200	$9M	0.11%	TRIM -44%
94	Russell Investments Group, Ltd.	135,684135,684	$9M	0.11%	—
95	FIRST SABREPOINT CAPITAL MANAGEMENT LP	135,000135,000	$9M	0.11%	NEW
96	CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM	133,468133,468	$8M	0.11%	ADD 19%
97	Creative Planning	133,233133,233	$8M	0.11%	ADD 50%
98	SG Americas Securities, LLC	128,744128,744	$8M	0.10%	ADD 28%
99	Legal & General Group Plc	126,447126,447	$8M	0.10%	TRIM -22%
100	Rafferty Asset Management, LLC	125,691125,691	$8M	0.10%	ADD 25%

† a filer this large appearing as NEW usually reflects a renamed or succeeded filing entity (the old name stops filing the same quarter) — not a brand-new position.

Rows rank by the value each filer reported — 13F filers price their own positions, so a holder with fewer shares can rank just above one with more.

Holder trends· top 15 holders · shares held over 6 quarters

green added · red trimmed

Holder

2024-Q4

2025-Q1

2025-Q2

2025-Q3

2025-Q4

2026-Q1

Latest value

BlackRock, Inc.

11.7M

11.4M

11.2M

10.5M

10.8M

11.1M

$704M

VANGUARD PORTFOLIO MANAGEMENT LLC

—

8.5M

$535M

DIMENSIONAL FUND ADVISORS LP

5.4M

5.5M

6.2M

6.4M

6.7M

6.9M

$439M

STATE STREET CORP

4.6M

4.7M

4.6M

4.5M

4.6M

5.1M

$324M

VANGUARD CAPITAL MANAGEMENT LLC

—

5.1M

$320M

WELLINGTON MANAGEMENT GROUP LLP

1.6M

2.0M

1.9M

2.1M

3.4M

4.0M

$252M

LSV ASSET MANAGEMENT

1.5M

2.3M

3.3M

3.5M

3.8M

$243M

T. Rowe Price Investment Management, Inc.

3.8M

3.5M

3.7M

4.8M

3.7M

$237M

ADAGE CAPITAL PARTNERS GP, L.L.C.

50K

1.1M

2.6M

3.0M

3.4M

3.0M

$192M

GEODE CAPITAL MANAGEMENT, LLC

2.0M

2.1M

2.2M

2.3M

$147M

AMERICAN CENTURY COMPANIES INC

607K

670K

720K

901K

1.8M

2.2M

$140M

MORGAN STANLEY

1.2M

1.8M

2.8M

2.4M

2.2M

$137M

ALLIANCEBERNSTEIN L.P.

2.7M

2.6M

2.5M

2.6M

2.7M

$113M

FIRST TRUST ADVISORS LP

709K

627K

617K

623K

785K

1.6M

$101M

GW&K Investment Management, LLC

1.8M

1.7M

1.6M

$98M

Institutional footprint by quarter

Line breaks are honest gaps — quarters with no 13F record, or a suppressed % — never interpolated. % of shares outstanding uses today's share count for every quarter (the only count stored).

Quarter	Holders	Shares held	% shares out	Value held
2026-Q1	491	117,055,894	94.3%	$7.3B
2025-Q4

Short interest has its own tab now — open SI →

Activists & large holders· Schedule 13D/G beneficial owners · MTDR

Large holders — 13G, passive (top 3 by % of class)

Holder	% of class	Type	As of
VANGUARD PORTFOLIO MANAGEMENT LLC	6.86%	QII	2026-03-31	SEC →
DIMENSIONAL FUND ADVISORS LP	5.2%	QII	2025-09-30	SEC →
VANGUARD GROUP INC	0%	QII	2026-03-13	SEC →

MTDR US Equity☆

Institutional ownership· 13F filers holding MTDR · 2026-Q1 methodology → sources →

Top holders

Holder trends· top 15 holders · shares held over 6 quarters

Institutional footprint by quarter

Activists & large holders· Schedule 13D/G beneficial owners · MTDR

Institutional ownership· 13F filers holding MTDR · 2026-Q1 methodology → sources →

Top holders

Holder trends· top 15 holders · shares held over 6 quarters

Institutional footprint by quarter

Activists & large holders· Schedule 13D/G beneficial owners · MTDR

MTDR US Equity