Mar 31, 2026 filings. Quarterly 13F reports arrive up to 45 days after quarter end; this register is filed through May 29, 2026.
182 institutional managers reported holding NESR for the quarter ended Mar 31, 2026. Together they hold about 59% of shares outstanding; the top 10 hold 29%. 56 opened new positions; 17 closed out. Complete ranked register from SEC 13F filings.
| manager | shares | % out | value (Mar 31, 2026 close) | change | held since |
|---|---|---|---|---|---|
| FMR (Fidelity) | 9.18M | 8.92% | $197.0M | added +23.7% | 2024 Q4 |
| Encompass Capital Advisors LLC | 4.26M | 4.14% | $91.5M | trimmed -40% | 2024 Q4 |
| BlackRock | 3.70M | 3.59% | $79.4M | added +8% | 2024 Q4 |
| T. Rowe Price Investment Management, INC. | 3.26M | 3.17% | $70.0M | added +2279.6% | 2025 Q4 |
| Boston Partners | 2.21M | 2.15% | $47.5M | added +13.3% | 2025 Q1 |
| Dimensional Fund Advisors | 1.96M | 1.91% | $42.1M | added +103.5% | 2024 Q4 |
| Dodge & Cox | 1.60M | 1.55% | $34.4M | trimmed -17.1% | 2024 Q4 |
| SCF Partners, INC. (focused) | 1.50M | 1.46% | $32.2M | trimmed -81.2% | 2024 Q4 |
| Ameriprise Financial INC | 1.33M | 1.30% | $28.6M | added +1702.4% | 2024 Q4 |
| State Street | 1.04M | 1.01% | $22.3M | added +12.1% | 2025 Q2 |
| Citadel Advisors | 992.5k | 0.96% | $21.3M | trimmed -60.3% | 2025 Q1 |
| Point72 | 965.0k | 0.94% | $20.7M | opened | 2026 Q1 |
| Holocene Advisors | 948.0k | 0.92% | $20.4M | added +16% | 2025 Q4 |
| Geode Capital | 919.5k | 0.89% | $19.7M | added +9.3% | 2025 Q1 |
| Walleye Capital LLC | 887.1k | 0.86% | $19.0M | opened | 2026 Q1 |
| Goldman Sachs | 859.7k | 0.83% | $18.5M | added +39.3% | 2024 Q4 |
| Vanguard Group | 859.1k | 0.83% | $18.4M | added +61.5% | 2025 Q2 |
| Arrowstreet Capital | 846.6k | 0.82% | $18.2M | added +75.9% | 2025 Q4 |
| Jacobs Levy Equity Management, INC | 840.0k | 0.82% | $18.0M | added +216.6% | 2025 Q4 |
| HRT Financial LP | 822.7k | 0.80% | $17.7M | opened | 2026 Q1 |
| Millennium Management | 811.4k | 0.79% | $17.4M | trimmed -34.4% | 2024 Q4 |
| Morgan Stanley | 801.7k | 0.78% | $17.2M | added +297.4% | 2024 Q4 |
| Nuveen | 776.4k | 0.75% | $16.7M | added +421.9% | 2025 Q2 |
| Bridgeway Capital Management, LLC | 739.0k | 0.72% | $15.9M | added +3.2% | 2025 Q2 |
| Occam Crest Management LP (focused) | 673.5k | 0.65% | $14.5M | trimmed -36.4% | 2025 Q3 |
| Qube Research & Technologies LTD | 666.6k | 0.65% | $14.3M | opened | 2026 Q1 |
| Russell Investments Group, LTD. | 652.6k | 0.63% | $14.0M | trimmed -4.2% | 2024 Q4 |
| AQR Capital | 645.0k | 0.63% | $13.8M | added +27.8% | 2025 Q3 |
| Barclays PLC | 621.1k | 0.60% | $13.3M | added +553.8% | 2024 Q4 |
| Trexquant Investment LP | 611.1k | 0.59% | $13.1M | opened | 2026 Q1 |
| Bank OF America CORP /DE/ | 597.4k | 0.58% | $12.8M | added +21.4% | 2024 Q4 |
| GeoSphere Capital Management, LLC (focused) | 549.6k | 0.53% | $11.8M | trimmed -61.2% | 2024 Q4 |
| Alyeska Investment Group | 546.5k | 0.53% | $11.7M | trimmed -29.9% | 2025 Q4 |
| Empowered Funds, LLC | 491.0k | 0.48% | $10.5M | added +9.3% | 2025 Q2 |
| Jane Street | 467.5k | 0.45% | $10.0M | added +1092% | 2025 Q1 |
| UBS | 447.8k | 0.43% | $9.6M | added +35.1% | 2024 Q4 |
| SummitTX Capital, L.p. | 441.6k | 0.43% | $9.5M | trimmed -9% | 2025 Q4 |
| VAN ECK Associates CORP | 426.8k | 0.41% | $9.2M | opened | 2026 Q1 |
| Phocas Financial CORP. | 414.0k | 0.40% | $8.9M | opened | 2026 Q1 |
| D. E. Shaw | 394.9k | 0.38% | $8.5M | added +438% | 2025 Q3 |
| Two Sigma | 391.2k | 0.38% | $8.4M | added +646.1% | 2024 Q4 |
| Northern Trust | 352.6k | 0.34% | $7.6M | added +19.3% | 2025 Q2 |
| Squarepoint Ops LLC | 342.3k | 0.33% | $7.3M | added +932.2% | 2025 Q4 |
| Healthcare OF Ontario Pension Plan Trust Fund | 334.8k | 0.33% | $7.2M | added +115.6% | 2025 Q4 |
| Man Group | 328.4k | 0.32% | $7.1M | added +270.2% | 2025 Q4 |
| Citigroup INC | 328.0k | 0.32% | $7.0M | trimmed -0.9% | 2024 Q4 |
| CenterBook Partners LP | 307.1k | 0.30% | $6.6M | added +86% | 2025 Q2 |
| BNP Paribas Financial Markets | 306.0k | 0.30% | $6.6M | added +2118% | 2024 Q4 |
| Hite Hedge Asset Management LLC | 293.4k | 0.28% | $6.3M | trimmed -68.1% | 2019 Q2 |
| Informed Momentum CO LLC | 280.1k | 0.27% | $6.0M | trimmed -9.3% | 2025 Q4 |
Largest 50 of 182 shown; the full ranked, searchable register is at boothcheck.com/holders/NESR. Related filers are grouped using the filings' own included-manager declarations. Historically, several managers opening new positions in the same quarter said almost nothing about the quarter that followed (59,118 cases since 2013). A filed record, not a forecast. Nothing here is investment advice.