MNTK — MONTAUK RENEWABLES INC
Reported value held$23.19M
Funds holding (latest)37
SectorUtilities
Funds holding (Q2 2026)26
Institutional value$15.49M · 9.97M sh
New / Add / Cut / Exit2 / 14 / 6 / 2
Top-5 / Top-10 concentration81.0% / 93.4%
Institutional holdings change
Accumulating +10.0%
(+904.19K sh)
Institutional value change
Up +49.2%
As of Q2 2026, 26 SEC-registered investment managers reported holding MNTK (MONTAUK RENEWABLES INC) in their latest 13F filings, with a combined reported value of $15.49M across 9.97M shares. That is +10.0% by share count (+904.19K shares) versus the previous quarter, while reported value moved +49.2%. Ownership is concentrated: the five largest holders account for 81.0% of reported value and the top ten for 93.4%.
Compared with the prior quarter, 2 opened new positions, 14 added to existing stakes, 6 trimmed, 2 exited entirely. 13F holdings are quarter-end snapshots, so these moves reflect positioning as of Q2 2026, not real-time trading.
MNTK is classified in the Utilities sector.
All figures on this page are computed from SEC Form 13F quarterly filings. 13F filers disclose long positions of $100,000 or more within 45 days of quarter end; short positions, options overlays and intra-quarter trades are not included, so treat the numbers as a quarterly snapshot of institutional ownership rather than real-time positioning.
Q2 2026 — 26 funds
| Fund | Shares | Value | Portfolio Weight | Change |
|---|---|---|---|---|
| BlackRock Inc history | 4.71M | $7.35M | 0.00% | Add |
| Geode Capital Management history | 1.88M | $2.93M | 0.00% | Add |
| Charles Schwab Investment Management history | 539.33K | $841.36K | 0.00% | Add |
| Northern Trust Corp history | 536.06K | $836.25K | 0.00% | Add |
| Goldman Sachs Group history | 377.28K | $588.55K | 0.00% | Add |
| Renaissance Technologies history | 364.80K | $569.09K | 0.00% | Add |
| JPMorgan Chase & Co history | 270.98K | $422.73K | 0.00% | New |
| AQR Capital Management history | 238.15K | $371.52K | 0.00% | Add |
| BNY Mellon history | 195.91K | $305.62K | 0.00% | Hold |
| Morgan Stanley history | 167.18K | $260.81K | 0.00% | Reduce |
| D. E. Shaw & Co history | 101.50K | $158.34K | 0.00% | Reduce |
| Marshall Wace history | 80.53K | $125.62K | 0.00% | Reduce |
| UBS Group AG history | 68.63K | $107.06K | 0.00% | Add |
| Citadel Advisors history | 58.83K | $91.77K | 0.00% | New |
| Wells Fargo & Co history | 58.51K | $91.28K | 0.00% | Add |
| Deutsche Bank AG history | 48.63K | $75.86K | 0.00% | Add |
| Bank of America Corp history | 45.08K | $70.32K | 0.00% | Reduce |
| Millennium Management history | 43.45K | $67.79K | 0.00% | Reduce |
| Prudential Financial history | 40.01K | $62.42K | 0.00% | Add |
| Invesco Ltd history | 35.88K | $55.97K | 0.00% | Reduce |
| Arrowstreet Capital history | 32.29K | $50.37K | 0.00% | Hold |
| Citigroup Inc history | 31.76K | $49.54K | 0.00% | Add |
| Legal & General Investment Management America history | 5.77K | $9.00K | 0.00% | Hold |
| Fidelity Management & Research (FMR) history | 1.34K | $2.09K | 0.00% | Add |
| PNC Financial Services history | 136 | $212 | 0.00% | Add |
| T. Rowe Price Associates history | 33.88K | $53 | 0.00% | Hold |
Q1 2026 — 26 funds
| Fund | Shares | Value | Portfolio Weight | Change |
|---|---|---|---|---|
| BlackRock Inc history | 4.22M | $4.85M | 0.00% | Reduce |
| Geode Capital Management history | 1.76M | $2.02M | 0.00% | Add |
| Charles Schwab Investment Management history | 520.61K | $598.70K | 0.00% | Reduce |
| Northern Trust Corp history | 505.37K | $581.18K | 0.00% | Add |
| Renaissance Technologies history | 354.60K | $407.79K | 0.00% | Add |
| Goldman Sachs Group history | 331.19K | $380.87K | 0.00% | Add |
| Morgan Stanley history | 261.40K | $300.61K | 0.00% | Reduce |
| Millennium Management history | 206.85K | $237.88K | 0.00% | Add |
| Marshall Wace history | 204.64K | $235.33K | 0.00% | New |
| BNY Mellon history | 195.91K | $225.29K | 0.00% | Reduce |
| D. E. Shaw & Co history | 118.26K | $135.99K | 0.00% | Reduce |
| Bank of America Corp history | 60.71K | $69.81K | 0.00% | Add |
| Deutsche Bank AG history | 47.01K | $54.06K | 0.00% | Hold |
| UBS Group AG history | 41.87K | $48.15K | 0.00% | Reduce |
| AQR Capital Management history | 38.35K | $44.10K | 0.00% | Add |
| Invesco Ltd history | 37.34K | $42.94K | 0.00% | Add |
| Arrowstreet Capital history | 32.29K | $37.13K | 0.00% | Hold |
| Wells Fargo & Co history | 25.21K | $29.00K | 0.00% | Reduce |
| Manulife Financial history | 18.97K | $21.81K | 0.00% | Reduce |
| Citigroup Inc history | 15.78K | $18.15K | 0.00% | Add |
| Prudential Financial history | 14.81K | $17.03K | 0.00% | New |
| Point72 Asset Management history | 10.87K | $12.50K | 0.00% | Add |
| Legal & General Investment Management America history | 5.77K | $6.61K | 0.00% | Reduce |
| Fidelity Management & Research (FMR) history | 810 | $932 | 0.00% | Reduce |
| PNC Financial Services history | 133 | $153 | 0.00% | Reduce |
| T. Rowe Price Associates history | 33.88K | $39 | 0.00% | Hold |
Q4 2025 — 28 funds
| Fund | Shares | Value | Portfolio Weight | Change |
|---|---|---|---|---|
| BlackRock Inc history | 4.32M | $7.22M | 0.00% | Add |
| Vanguard Group history | 3.53M | $5.89M | 0.00% | Reduce |
| Geode Capital Management history | 1.72M | $2.88M | 0.00% | Add |
| Charles Schwab Investment Management history | 544.65K | $909.56K | 0.00% | Hold |
| Northern Trust Corp history | 465.74K | $777.78K | 0.00% | Reduce |
| Renaissance Technologies history | 342.70K | $572.31K | 0.00% | Add |
| Morgan Stanley history | 328.66K | $548.87K | 0.00% | Add |
| BNY Mellon history | 209.57K | $349.98K | 0.00% | Reduce |
| Citadel Advisors history | 200.02K | $334.04K | 0.00% | Reduce |
| Goldman Sachs Group history | 196.03K | $327.37K | 0.00% | Add |
| D. E. Shaw & Co history | 192.35K | $321.22K | 0.00% | Reduce |
| JPMorgan Chase & Co history | 172.19K | $287.56K | 0.00% | Reduce |
| Wells Fargo & Co history | 75.05K | $125.33K | 0.00% | Add |
| UBS Group AG history | 69.06K | $115.32K | 0.00% | Reduce |
| Bank of America Corp history | 59.15K | $98.78K | 0.00% | Add |
| Deutsche Bank AG history | 47.01K | $78.50K | 0.00% | Add |
| Arrowstreet Capital history | 32.29K | $53.92K | 0.00% | Hold |
| Invesco Ltd history | 31.05K | $51.86K | 0.00% | Add |
| Millennium Management history | 25.65K | $42.84K | 0.00% | Reduce |
| Two Sigma Investments history | 23.21K | $38.77K | 0.00% | Add |
| Manulife Financial history | 20.58K | $34.37K | 0.00% | Reduce |
| AQR Capital Management history | 14.56K | $24.31K | 0.00% | Reduce |
| Point72 Asset Management history | 10.42K | $17.40K | 0.00% | New |
| Fidelity Management & Research (FMR) history | 9.16K | $15.29K | 0.00% | Add |
| Citigroup Inc history | 7.26K | $12.13K | 0.00% | Reduce |
| Legal & General Investment Management America history | 6.06K | $10.12K | 0.00% | Hold |
| PNC Financial Services history | 288 | $481 | 0.00% | Add |
| T. Rowe Price Associates history | 33.88K | $57 | 0.00% | Hold |
Q3 2025 — 27 funds
| Fund | Shares | Value | Portfolio Weight | Change |
|---|---|---|---|---|
| BlackRock Inc history | 4.27M | $8.58M | 0.00% | Reduce |
| Vanguard Group history | 3.95M | $7.94M | 0.00% | Reduce |
| Geode Capital Management history | 1.69M | $3.39M | 0.00% | Add |
| Charles Schwab Investment Management history | 545.01K | $1.10M | 0.00% | Add |
| Northern Trust Corp history | 527.23K | $1.06M | 0.00% | Add |
| Renaissance Technologies history | 336.40K | $676.16K | 0.00% | Reduce |
| BNY Mellon history | 265.97K | $534.61K | 0.00% | Reduce |
| Morgan Stanley history | 237.08K | $476.53K | 0.00% | Reduce |
| D. E. Shaw & Co history | 223.28K | $448.79K | 0.00% | Add |
| Citadel Advisors history | 204.71K | $411.46K | 0.00% | Add |
| Millennium Management history | 201.74K | $405.49K | 0.00% | Reduce |
| JPMorgan Chase & Co history | 177.85K | $357.49K | 0.00% | Add |
| Goldman Sachs Group history | 165.76K | $333.18K | 0.00% | Add |
| UBS Group AG history | 72.53K | $145.78K | 0.00% | Reduce |
| Wells Fargo & Co history | 49.40K | $99.30K | 0.00% | Add |
| Arrowstreet Capital history | 32.29K | $64.90K | 0.00% | Hold |
| Bank of America Corp history | 30.74K | $61.78K | 0.00% | Reduce |
| Invesco Ltd history | 23.00K | $46.23K | 0.00% | Add |
| Manulife Financial history | 22.28K | $44.79K | 0.00% | Reduce |
| Two Sigma Investments history | 16.95K | $34.08K | 0.00% | New |
| AQR Capital Management history | 16.48K | $33.12K | 0.00% | Reduce |
| Citigroup Inc history | 13.69K | $27.52K | 0.00% | Reduce |
| Legal & General Investment Management America history | 6.06K | $12.18K | 0.00% | Hold |
| Fidelity Management & Research (FMR) history | 1.65K | $3.31K | 0.00% | Add |
| Deutsche Bank AG history | 224 | $450 | 0.00% | Reduce |
| PNC Financial Services history | 145 | $291 | 0.00% | Reduce |
| T. Rowe Price Associates history | 33.88K | $69 | 0.00% | Reduce |
Q2 2025 — 27 funds
| Fund | Shares | Value | Portfolio Weight | Change |
|---|---|---|---|---|
| BlackRock Inc history | 4.38M | $9.72M | 0.00% | Reduce |
| Vanguard Group history | 3.97M | $8.82M | 0.00% | Add |
| Geode Capital Management history | 1.68M | $3.73M | 0.00% | Hold |
| Charles Schwab Investment Management history | 524.11K | $1.16M | 0.00% | Add |
| Northern Trust Corp history | 516.92K | $1.15M | 0.00% | Reduce |
| Renaissance Technologies history | 344.21K | $764.15K | 0.00% | Add |
| BNY Mellon history | 272.89K | $605.82K | 0.00% | Add |
| Morgan Stanley history | 253.86K | $563.57K | 0.00% | Reduce |
| Millennium Management history | 216.08K | $479.69K | 0.00% | Add |
| D. E. Shaw & Co history | 180.48K | $400.67K | 0.00% | Reduce |
| Goldman Sachs Group history | 92.59K | $205.54K | 0.00% | Reduce |
| UBS Group AG history | 83.43K | $185.22K | 0.00% | Reduce |
| Citadel Advisors history | 73.54K | $163.26K | 0.00% | New |
| JPMorgan Chase & Co history | 64.77K | $143.79K | 0.00% | Add |
| Deutsche Bank AG history | 58.07K | $128.92K | 0.00% | Reduce |
| Marshall Wace history | 56.90K | $126.32K | 0.00% | Add |
| Wells Fargo & Co history | 41.39K | $91.88K | 0.00% | Add |
| Bank of America Corp history | 34.49K | $76.58K | 0.00% | Reduce |
| Arrowstreet Capital history | 32.29K | $71.68K | 0.00% | New |
| Citigroup Inc history | 29.79K | $66.12K | 0.00% | Reduce |
| AQR Capital Management history | 28.88K | $64.12K | 0.00% | Reduce |
| Manulife Financial history | 23.00K | $51.06K | 0.00% | Reduce |
| Invesco Ltd history | 20.78K | $46.12K | 0.00% | Reduce |
| Legal & General Investment Management America history | 6.06K | $13.46K | 0.00% | Reduce |
| Fidelity Management & Research (FMR) history | 1.37K | $3.03K | 0.00% | Add |
| PNC Financial Services history | 435 | $966 | 0.00% | New |
| T. Rowe Price Associates history | 71.88K | $160 | 0.00% | Add |
Q1 2025 — 26 funds
| Fund | Shares | Value | Portfolio Weight | Change |
|---|---|---|---|---|
| BlackRock Inc history | 4.55M | $9.51M | 0.00% | Reduce |
| Vanguard Group history | 3.84M | $8.02M | 0.00% | Add |
| Geode Capital Management history | 1.68M | $3.51M | 0.00% | Add |
| Northern Trust Corp history | 580.31K | $1.21M | 0.00% | Reduce |
| Charles Schwab Investment Management history | 508.65K | $1.06M | 0.00% | Add |
| Morgan Stanley history | 313.45K | $655.12K | 0.00% | Reduce |
| Renaissance Technologies history | 284.50K | $594.61K | 0.00% | Add |
| BNY Mellon history | 236.57K | $494.43K | 0.00% | Hold |
| D. E. Shaw & Co history | 190.35K | $397.84K | 0.00% | Reduce |
| Goldman Sachs Group history | 142.36K | $297.53K | 0.00% | Reduce |
| UBS Group AG history | 138.24K | $288.93K | 0.00% | Reduce |
| Deutsche Bank AG history | 66.12K | $138.20K | 0.00% | Reduce |
| Citigroup Inc history | 58.76K | $122.80K | 0.00% | Reduce |
| Legal & General Investment Management America history | 53.55K | $111.93K | 0.00% | Hold |
| JPMorgan Chase & Co history | 51.80K | $108.26K | 0.00% | Reduce |
| Bank of America Corp history | 41.50K | $86.74K | 0.00% | Reduce |
| Invesco Ltd history | 39.73K | $83.03K | 0.00% | Reduce |
| Wells Fargo & Co history | 31.54K | $65.91K | 0.00% | Add |
| Janus Henderson Group history | 30.18K | $63.23K | 0.00% | Hold |
| AQR Capital Management history | 29.50K | $61.66K | 0.00% | New |
| Manulife Financial history | 25.52K | $53.33K | 0.00% | Reduce |
| Millennium Management history | 22.89K | $47.85K | 0.00% | Reduce |
| Marshall Wace history | 21.99K | $45.95K | 0.00% | Reduce |
| Fidelity Management & Research (FMR) history | 811 | $1.70K | 0.00% | Reduce |
| T. Rowe Price Associates history | 65.83K | $138 | 0.00% | Add |
| Lazard Asset Management history | 837 | $1 | 0.00% | Add |
New Positions (Q2 2026)
- JPMorgan Chase & Co 270.98K sh · $422.73K
- Citadel Advisors 58.83K sh · $91.77K
Fully Exited (vs previous quarter)
- Manulife Financial sold 18.97K sh · $21.81K
- Point72 Asset Management sold 10.87K sh · $12.50K
Fund Position History — shares by quarter (top 20 funds)
| Fund | Q2 2026 | Q1 2026 | Q4 2025 | Q3 2025 | Q2 2025 | Q1 2025 | Q4 2024 | Q3 2024 | Q2 2024 | Q1 2024 | Q4 2023 | Q3 2023 | Q2 2023 | Q1 2023 | Q4 2022 | Q3 2022 | Q2 2022 | Q1 2022 | Q4 2021 | Q3 2021 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| BlackRock Inc | 4.71M | 4.22M | 4.32M | 4.27M | 4.38M | 4.55M | 4.77M | 4.68M | — | — | — | — | — | — | — | — | — | — | — | — |
| Geode Capital Management | 1.88M | 1.76M | 1.72M | 1.69M | 1.68M | 1.68M | 1.65M | 1.64M | 1.63M | 1.55M | 1.52M | 1.47M | 1.39M | 1.28M | 1.23M | 1.18M | 1.17M | 604.64K | 586.10K | 491.58K |
| Charles Schwab Investment Management | 539.33K | 520.61K | 544.65K | 545.01K | 524.11K | 508.65K | 496.41K | 516.72K | 515.47K | 517.66K | 510.92K | 498.08K | 477.94K | 470.69K | 479.57K | 460.83K | 449.67K | 318.50K | 306.17K | 300.20K |
| Northern Trust Corp | 536.06K | 505.37K | 465.74K | 527.23K | 516.92K | 580.31K | 618.63K | 595.94K | 597.91K | 581.97K | 595.25K | 602.37K | 599.41K | 582.60K | 578.57K | 574.05K | 583.44K | 108.64K | 110.71K | 111.54K |
| Goldman Sachs Group | 377.28K | 331.19K | 196.03K | 165.76K | 92.59K | 142.36K | 252.46K | 177.83K | 174.99K | 86.85K | 236.67K | 244.60K | 220.06K | 218.88K | 304.50K | 206.01K | 232.47K | 174.59K | 55.02K | 48.42K |
| Renaissance Technologies | 364.80K | 354.60K | 342.70K | 336.40K | 344.21K | 284.50K | 271.50K | 302.10K | 234.30K | 406.57K | 113.00K | 104.40K | 288.01K | 307.33K | 181.30K | 158.30K | 95.00K | — | — | — |
| JPMorgan Chase & Co | 270.98K | — | 172.19K | 177.85K | 64.77K | 51.80K | 211.60K | 173.48K | 51.41K | 260.08K | 143.94K | 81.89K | 138.19K | 97.02K | 150.92K | 293.54K | 206.66K | 76.36K | 13.95K | 1.56K |
| AQR Capital Management | 238.15K | 38.35K | 14.56K | 16.48K | 28.88K | 29.50K | — | 10.85K | 79.95K | — | — | 18.83K | 33.16K | 37.88K | 97.52K | 177.81K | 14.07K | — | — | — |
| BNY Mellon | 195.91K | 195.91K | 209.57K | 265.97K | 272.89K | 236.57K | 237.39K | 216.83K | 263.28K | 255.72K | 280.15K | 263.14K | 261.67K | 288.65K | 297.62K | 224.17K | 170.99K | 28.03K | 28.03K | 18.88K |
| Morgan Stanley | 167.18K | 261.40K | 328.66K | 237.08K | 253.86K | 313.45K | 450.31K | 569.83K | 525.13K | 491.76K | 362.35K | 350.10K | 453.08K | 516.29K | 529.73K | 524.73K | 278.99K | 120.15K | 106.88K | 149 |
| D. E. Shaw & Co | 101.50K | 118.26K | 192.35K | 223.28K | 180.48K | 190.35K | 216.95K | 278.45K | 316.89K | 240.23K | 274.97K | 282.32K | 286.09K | 237.72K | 185.99K | 20.06K | 65.53K | — | — | — |
| Marshall Wace | 80.53K | 204.64K | — | — | 56.90K | 21.99K | 43.73K | — | 168.85K | — | — | — | — | — | 38.17K | — | 22.10K | — | — | — |
| UBS Group AG | 68.63K | 41.87K | 69.06K | 72.53K | 83.43K | 138.24K | 219.37K | 55.70K | 43.68K | 90.54K | 36.80K | 12.56K | 44.31K | 24.12K | 6.50K | 3.78K | 14.25K | 16.79K | 26.01K | 19.38K |
| Citadel Advisors | 58.83K | — | 200.02K | 204.71K | 73.54K | — | — | — | 123.24K | 276.90K | 80.33K | 191.33K | 25.19K | 10.62K | 13.38K | — | 29.48K | 152.36K | 63.01K | — |
| Wells Fargo & Co | 58.51K | 25.21K | 75.05K | 49.40K | 41.39K | 31.54K | 30.84K | 20.37K | 21.13K | 19.92K | 17.26K | 13.33K | 28.00K | 12.64K | 200 | 1.37K | 2.00K | 389 | 388 | 383 |
| Deutsche Bank AG | 48.63K | 47.01K | 47.01K | 224 | 58.07K | 66.12K | 71.27K | 46.71K | 35.80K | 38.80K | 38.12K | 37.69K | 27.84K | 45.16K | 33.62K | 29.36K | 169.85K | — | — | — |
| Bank of America Corp | 45.08K | 60.71K | 59.15K | 30.74K | 34.49K | 41.50K | 76.09K | 54.62K | 72.26K | 55.61K | 81.02K | 62.04K | 34.58K | 62.76K | 106.06K | 38.34K | 28.07K | 25.13K | 95 | 43 |
| Millennium Management | 43.45K | 206.85K | 25.65K | 201.74K | 216.08K | 22.89K | 33.26K | — | 289.58K | 450.15K | 21.34K | 23.38K | 88.96K | 285.34K | 797.30K | 367.49K | 377.69K | 674.27K | 20.86K | 18.94K |
| Prudential Financial | 40.01K | 14.81K | — | — | — | — | — | — | — | — | — | — | 15.35K | — | — | — | — | — | — | — |
| Invesco Ltd | 35.88K | 37.34K | 31.05K | 23.00K | 20.78K | 39.73K | 42.53K | 45.79K | 47.91K | 48.99K | 63.04K | 55.98K | 59.97K | 73.55K | 266.68K | 254.04K | 131.81K | — | — | — |
▲ Bought Low (fund opened/added, stock rose ≥5% next quarter) ▼ Sold High (fund reduced, stock fell ≥5% next quarter)
Drag / scroll to zoom · Default shows the most recent year · Annotations come from quarterly fund actions in 13F filings · Hover a marker for details