PITTSBURGH, PA
MONTAUK RENEWABLES, INC.MNTK— Latest position per institution from SEC 13F filings
15
Institutional holders
26.34M
Total shares held
53.94M
Estimated value
1.32M
Avg. position size
BLACKROCK FINANCE, INC.
CIK 1364742
Shares
4.51M
Value
25.71M
Filed
Jun 30, 2024
BLACKROCK, INC.
CIK 2012383
Shares
4.22M
Value
4.85M
Filed
Mar 31, 2026
VANGUARD GROUP INC
CIK 102909
Shares
3.53M
Value
5.89M
Filed
Dec 31, 2025
VANGUARD CAPITAL MANAGEMENT LLC
CIK 2100119
Shares
2.69M
Value
3.09M
Filed
Mar 31, 2026
GEODE CAPITAL MANAGEMENT, LLC
CIK 1214717
Shares
1.76M
Value
2.02M
Filed
Mar 31, 2026
BAADER BANK AKTIENGESELLSCHAFT
CIK 1542629
Shares
1.60M
Value
1.85M
Filed
Mar 31, 2026
STATE STREET CORP
CIK 93751
Shares
1.37M
Value
1.57M
Filed
Mar 31, 2026
BARCLAYS PLC
CIK 312069
Shares
1.04M
Value
1.19M
Filed
Mar 31, 2026
AMERICAN CENTURY COMPANIES INC
CIK 748054
Shares
954.47K
Value
1.10M
Filed
Mar 31, 2026
DIMENSIONAL FUND ADVISORS LP
CIK 354204
Shares
736.58K
Value
847.30K
Filed
Mar 31, 2026
CHARLES SCHWAB INVESTMENT MANAGEMENT INC
CIK 884546
Shares
520.61K
Value
598.70K
Filed
Mar 31, 2026
NORTHERN TRUST CORP
CIK 73124
Shares
505.37K
Value
581.18K
Filed
Mar 31, 2026
VANGUARD FIDUCIARY TRUST CO
CIK 933478
Shares
432.27K
Value
497.11K
Filed
Mar 31, 2026
SIR CAPITAL MANAGEMENT, L.P.
CIK 1434997
Shares
398.95K
Value
2.08M
Filed
Sep 30, 2024
HOSKING PARTNERS LLP
CIK 1650135
Shares
396.93K
Value
456.47K
Filed
Mar 31, 2026
VANGUARD PORTFOLIO MANAGEMENT LLC
CIK 2100121
Shares
388.92K
Value
447.26K
Filed
Mar 31, 2026
RENAISSANCE TECHNOLOGIES LLC
CIK 1037389
Shares
354.60K
Value
407.79K
Filed
Mar 31, 2026
GOLDMAN SACHS GROUP INC
CIK 886982
Shares
331.19K
Value
380.87K
Filed
Mar 31, 2026
FIRST TRUST ADVISORS LP
CIK 1125816
Shares
311.95K
Value
358.74K
Filed
Mar 31, 2026
GSA CAPITAL PARTNERS LLP
CIK 1362033
Shares
289.89K
Value
333.00
Filed
Mar 31, 2026
| # | Institution | CIK | Shares | Est. Value | Period |
|---|---|---|---|---|---|
| 1 | BLACKROCK FINANCE, INC. | 1364742 | 4.51M | 25.71M | Jun 30, 2024 |
| 2 | BLACKROCK, INC. | 2012383 | 4.22M | 4.85M | Mar 31, 2026 |
| 3 | VANGUARD GROUP INC | 102909 | 3.53M | 5.89M | Dec 31, 2025 |
| 4 | VANGUARD CAPITAL MANAGEMENT LLC | 2100119 | 2.69M | 3.09M | Mar 31, 2026 |
| 5 | GEODE CAPITAL MANAGEMENT, LLC | 1214717 | 1.76M | 2.02M | Mar 31, 2026 |
| 6 | BAADER BANK AKTIENGESELLSCHAFT | 1542629 | 1.60M | 1.85M | Mar 31, 2026 |
| 7 | STATE STREET CORP | 93751 | 1.37M | 1.57M | Mar 31, 2026 |
| 8 | BARCLAYS PLC | 312069 | 1.04M | 1.19M | Mar 31, 2026 |
| 9 | AMERICAN CENTURY COMPANIES INC | 748054 | 954.47K | 1.10M | Mar 31, 2026 |
| 10 | DIMENSIONAL FUND ADVISORS LP | 354204 | 736.58K | 847.30K | Mar 31, 2026 |
| 11 | CHARLES SCHWAB INVESTMENT MANAGEMENT INC | 884546 | 520.61K | 598.70K | Mar 31, 2026 |
| 12 | NORTHERN TRUST CORP | 73124 | 505.37K | 581.18K | Mar 31, 2026 |
| 13 | VANGUARD FIDUCIARY TRUST CO | 933478 | 432.27K | 497.11K | Mar 31, 2026 |
| 14 | SIR CAPITAL MANAGEMENT, L.P. | 1434997 | 398.95K | 2.08M | Sep 30, 2024 |
| 15 | HOSKING PARTNERS LLP | 1650135 | 396.93K | 456.47K | Mar 31, 2026 |
| 16 | VANGUARD PORTFOLIO MANAGEMENT LLC | 2100121 | 388.92K | 447.26K | Mar 31, 2026 |
| 17 | RENAISSANCE TECHNOLOGIES LLC | 1037389 | 354.60K | 407.79K | Mar 31, 2026 |
| 18 | GOLDMAN SACHS GROUP INC | 886982 | 331.19K | 380.87K | Mar 31, 2026 |
| 19 | FIRST TRUST ADVISORS LP | 1125816 | 311.95K | 358.74K | Mar 31, 2026 |
| 20 | GSA CAPITAL PARTNERS LLP | 1362033 | 289.89K | 333.00 | Mar 31, 2026 |
Data sourced from SEC Form 13F institutional holdings reports. Positions reflect the most recent filing per institution.