Who owns National Energy Services Reunited (NESR)
Which tracked institutional funds hold NESR, how they are positioned, and who is buying versus exiting — from SEC Form 13F-HR filings. See NESR company fundamentals →
Ownership as of the 2026-Q1 13F filings (latest filed 2026-05-18). 13F is disclosed up to 45 days after quarter-end, so the most recent quarter fills in over the following weeks.
How the tape is positioned
The tracked-fund tape on NESR is one-sided between 2025-Q4 and 2026-Q1: 94 added or opened and 28 trimmed or exited — on balance accumulating.
A prompt to read the filings, not a verdict. 13F is a quarter-end snapshot disclosed up to 45 days late; a fund adds or exits for mandate, benchmark, and timing reasons that have nothing to do with a view on the stock. This is a starting question, not a signal to trade.
Conviction spread
NESR’s largest tracked holder by dollar value, FMR LLC, sizes it at 0.0% of its own reported 13F book, while the median holder sizes it at 0.0% of theirs — a 0.0pp conviction gap — its largest holder concentrates the name more heavily than the typical one.
Book-share is each fund’s reported value in NESR divided by its whole reported 13F book, so it is comparable across funds of different sizes and is unaffected by stock splits. A higher share means a fund has committed more of its book to the name — a starting question about conviction, not a verdict or a signal to trade.
Institutional & insider positioning
Between 2025-Q4 and 2026-Q1, across 186 tracked filers holding NESR, 129 increased or opened the position and 66 reduced or closed it; over the same quarter, there were no open-market insider Form 4s.
This fuses two public signals for the same quarter — how tracked institutions changed their positions and whether insiders bought or sold in the open market. It describes what was filed; it is a starting question, not a verdict or a signal to trade.
New buyers & exits
Funds opening or closing a position in NESR between the 2025-Q4 and 2026-Q1 13F filings, and the largest changes among funds holding it in both. New buyers and exits are counted on fund presence (split-invariant); adds and trims are measured on reported value.
New buyers 32
- Point72 Asset Management, L.P.$21M
- Walleye Capital LLC$19M
- HRT FINANCIAL LP$18M
- VANGUARD PORTFOLIO MANAGEMENT LLC$18M
- Qube Research & Technologies Ltd$14M
- Trexquant Investment LP$13M
Full exits 8
- Driehaus Capital Management LLC$23M
- Fort Baker Capital Management LP$12M
- VANGUARD GROUP INC$8M
- Lighthouse Investment Partners, LLC$3M
- Freestone Grove Partners LP$1M
- SIR Capital Management, L.P.$1M
Largest adds
- FMR LLC$79M
- T. Rowe Price Investment Management, Inc.$68M
- AMERIPRISE FINANCIAL INC$27M
- DIMENSIONAL FUND ADVISORS LP$27M
- BlackRock, Inc.$26M
- JPMORGAN CHASE & CO$22M
Largest trims
- SCF Partners, Inc.$93M
- Encompass Capital Advisors LLC$20M
- CITADEL ADVISORS LLC$18M
- GeoSphere Capital Management, LLC$10M
- HITE Hedge Asset Management LLC$8M
- Oceanic Investment Management LTD$7M
Institutional holders
One row per tracked fund, largest reported value first. “% of value” is the fund’s share of this security’s tracked institutional value — not of shares outstanding. Rows marked stale are from an earlier filing than the security’s latest quarter — that fund is absent from the newest snapshot (position exited, or reported under a different name).
| Fund | Shares | Reported value | % of value | Quarter |
|---|---|---|---|---|
| FMR LLC added | 10,918,231 | $327M | 19.7% | 2026-Q2 |
| BlackRock, Inc. added | 4,847,106 | $145M | 8.7% | 2026-Q2 |
| Encompass Capital Advisors LLC trimmed | 4,261,389 | $91M | 5.5% | 2026-Q1 |
| T. Rowe Price Investment Management, Inc. added | 3,260,587 | $70M | 4.2% | 2026-Q1 |
| DODGE & COX trimmed | 1,595,994 | $48M | 2.9% | 2026-Q2 |
| Boston Partners added | 2,213,319 | $48M | 2.9% | 2026-Q1 |
| CITADEL ADVISORS LLC added | 1,540,888 | $46M | 2.8% | 2026-Q2 |
| STATE STREET CORP added | 1,422,960 | $43M | 2.6% | 2026-Q2 |
| DIMENSIONAL FUND ADVISORS LP added | 1,960,587 | $42M | 2.5% | 2026-Q1 |
| MILLENNIUM MANAGEMENT LLC added | 1,227,885 | $37M | 2.2% | 2026-Q2 |
| SCF Partners, Inc. trimmed | 1,500,000 | $32M | 1.9% | 2026-Q1 |
| AMERIPRISE FINANCIAL INC added | 1,333,654 | $29M | 1.7% | 2026-Q1 |
| JPMORGAN CHASE & CO added | 1,334,868 | $28M | 1.7% | 2026-Q1 |
| AQR CAPITAL MANAGEMENT LLC added | 775,990 | $23M | 1.4% | 2026-Q2 |
| NORGES BANK new | 698,200 | $21M | 1.3% | 2026-Q2 |
| Holocene Advisors, LP added | 948,001 | $20M | 1.2% | 2026-Q1 |
| GEODE CAPITAL MANAGEMENT, LLC added | 919,527 | $20M | 1.2% | 2026-Q1 |
| Walleye Capital LLC new | 887,068 | $19M | 1.1% | 2026-Q1 |
| GOLDMAN SACHS GROUP INC added | 859,740 | $18M | 1.1% | 2026-Q1 |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP added | 846,597 | $18M | 1.1% | 2026-Q1 |
| JACOBS LEVY EQUITY MANAGEMENT, INC added | 839,962 | $18M | 1.1% | 2026-Q1 |
| HRT FINANCIAL LP added | 822,652 | $18M | 1.1% | 2026-Q1 |
| VANGUARD PORTFOLIO MANAGEMENT LLC new | 817,208 | $18M | 1.1% | 2026-Q1 |
| MORGAN STANLEY added | 801,716 | $17M | 1.0% | 2026-Q1 |
| Nuveen, LLC added | 776,390 | $17M | 1.0% | 2026-Q1 |
| BRIDGEWAY CAPITAL MANAGEMENT, LLC added | 739,018 | $16M | 1.0% | 2026-Q1 |
| Occam Crest Management LP trimmed | 673,545 | $14M | 0.9% | 2026-Q1 |
| Qube Research & Technologies Ltd added | 666,554 | $14M | 0.9% | 2026-Q1 |
| Russell Investments Group, Ltd. trimmed | 652,619 | $14M | 0.8% | 2026-Q1 |
| BARCLAYS PLC added | 621,132 | $13M | 0.8% | 2026-Q1 |
| Trexquant Investment LP added | 611,140 | $13M | 0.8% | 2026-Q1 |
| BANK OF AMERICA CORP /DE/ added | 597,400 | $13M | 0.8% | 2026-Q1 |
| GeoSphere Capital Management, LLC trimmed | 549,578 | $12M | 0.7% | 2026-Q1 |
| Alyeska Investment Group, L.P. trimmed | 546,450 | $12M | 0.7% | 2026-Q1 |
| Empowered Funds, LLC added | 491,009 | $11M | 0.6% | 2026-Q1 |
| JANE STREET GROUP, LLC added | 467,512 | $10M | 0.6% | 2026-Q1 |
| UBS Group AG added | 447,199 | $10M | 0.6% | 2026-Q1 |
| SummitTX Capital, L.P. trimmed | 441,589 | $9M | 0.6% | 2026-Q1 |
| VAN ECK ASSOCIATES CORP new | 426,842 | $9M | 0.6% | 2026-Q1 |
| Phocas Financial Corp. trimmed | 414,003 | $9M | 0.5% | 2026-Q1 |
| D. E. Shaw & Co., Inc. added | 394,921 | $8M | 0.5% | 2026-Q1 |
| NORTHERN TRUST CORP added | 352,569 | $8M | 0.5% | 2026-Q1 |
| Squarepoint Ops LLC added | 342,292 | $7M | 0.4% | 2026-Q1 |
| HEALTHCARE OF ONTARIO PENSION PLAN TRUST FUND added | 334,823 | $7M | 0.4% | 2026-Q1 |
| RENAISSANCE TECHNOLOGIES LLC new | 239,139 | $7M | 0.4% | 2026-Q2 |
| Man Group plc added | 328,422 | $7M | 0.4% | 2026-Q1 |
| CITIGROUP INC trimmed | 328,040 | $7M | 0.4% | 2026-Q1 |
| CenterBook Partners LP added | 307,103 | $7M | 0.4% | 2026-Q1 |
| BNP PARIBAS FINANCIAL MARKETS added | 305,978 | $7M | 0.4% | 2026-Q1 |
| Invesco Ltd. trimmed | 218,044 | $7M | 0.4% | 2026-Q2 |
| Point72 Asset Management, L.P. trimmed | 214,147 | $6M | 0.4% | 2026-Q2 |
| HITE Hedge Asset Management LLC trimmed | 293,373 | $6M | 0.4% | 2026-Q1 |
| ExodusPoint Capital Management, LP added | 205,935 | $6M | 0.4% | 2026-Q2 |
| Informed Momentum Co LLC trimmed | 280,139 | $6M | 0.4% | 2026-Q1 |
| ACADIAN ASSET MANAGEMENT LLC added | 267,185 | $6M | 0.3% | 2026-Q1 |
| IRIDIAN ASSET MANAGEMENT LLC/CT trimmed | 234,476 | $5M | 0.3% | 2026-Q1 |
| Aventail Capital Group, LP added | 225,734 | $5M | 0.3% | 2026-Q1 |
| Turas Capital Management LP new | 220,800 | $5M | 0.3% | 2026-Q1 |
| TUDOR INVESTMENT CORP ET AL added | 144,952 | $4M | 0.3% | 2026-Q2 |
| LMR Partners LLP added | 192,788 | $4M | 0.2% | 2026-Q1 |
| XTX Topco Ltd added | 191,808 | $4M | 0.2% | 2026-Q1 |
| Oxbow Advisors, LLC trimmed | 175,127 | $4M | 0.2% | 2026-Q1 |
| Oceanic Investment Management LTD trimmed | 162,400 | $3M | 0.2% | 2026-Q1 |
| Bank of New York Mellon Corp added | 159,622 | $3M | 0.2% | 2026-Q1 |
| Engineers Gate Manager LP new | 156,316 | $3M | 0.2% | 2026-Q1 |
| LOS ANGELES CAPITAL MANAGEMENT LLC added | 150,239 | $3M | 0.2% | 2026-Q1 |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC trimmed | 147,965 | $3M | 0.2% | 2026-Q1 |
| TWO SIGMA INVESTMENTS, LP trimmed | 100,753 | $3M | 0.2% | 2026-Q2 |
| HOTCHKIS & WILEY CAPITAL MANAGEMENT LLC trimmed | 139,220 | $3M | 0.2% | 2026-Q1 |
| VICTORY CAPITAL MANAGEMENT INC added | 137,625 | $3M | 0.2% | 2026-Q1 |
| AMERICAN CENTURY COMPANIES INC trimmed | 136,844 | $3M | 0.2% | 2026-Q1 |
| PRUDENTIAL FINANCIAL INC new | 126,780 | $3M | 0.2% | 2026-Q1 |
| SEI INVESTMENTS CO added | 124,472 | $3M | 0.2% | 2026-Q1 |
| LAZARD ASSET MANAGEMENT LLC added | 120,408 | $3M | 0.2% | 2026-Q1 |
| CREDIT AGRICOLE S A new | 120,000 | $3M | 0.2% | 2026-Q1 |
| Verition Fund Management LLC added | 82,000 | $2M | 0.1% | 2026-Q2 |
| RAYMOND JAMES FINANCIAL INC added | 108,406 | $2M | 0.1% | 2026-Q1 |
| Jump Financial, LLC added | 105,626 | $2M | 0.1% | 2026-Q1 |
| Inspire Investing, LLC trimmed | 102,664 | $2M | 0.1% | 2026-Q1 |
| PRINCIPAL FINANCIAL GROUP INC added | 100,301 | $2M | 0.1% | 2026-Q1 |
| TD Asset Management Inc added | 92,408 | $2M | 0.1% | 2026-Q1 |
| NEW YORK STATE COMMON RETIREMENT FUND | 92,020 | $2M | 0.1% | 2026-Q1 |
| EdgePoint Investment Group Inc. | 89,999 | $2M | 0.1% | 2026-Q1 |
| GSA CAPITAL PARTNERS LLP new | 88,166 | $2M | 0.1% | 2026-Q1 |
| RHUMBLINE ADVISERS added | 83,720 | $2M | 0.1% | 2026-Q1 |
| PUBLIC EMPLOYEES RETIREMENT SYSTEM OF OHIO new | 80,817 | $2M | 0.1% | 2026-Q1 |
| IEQ CAPITAL, LLC trimmed | 80,382 | $2M | 0.1% | 2026-Q1 |
| Calamos Advisors LLC new | 77,807 | $2M | 0.1% | 2026-Q1 |
| SCHRODER INVESTMENT MANAGEMENT GROUP new | 80,137 | $2M | 0.1% | 2026-Q1 |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP added | 75,288 | $2M | 0.1% | 2026-Q1 |
| FRANKLIN RESOURCES INC added | 72,841 | $2M | 0.1% | 2026-Q1 |
| Penn Capital Management Company, LLC trimmed | 72,329 | $2M | 0.1% | 2026-Q1 |
| Driehaus Capital Management LLC new | 1,492,513 | $23M | 1.4% | 2025-Q4 stale |
| Fort Baker Capital Management LP trimmed | 783,649 | $12M | 0.7% | 2025-Q4 stale |
| VANGUARD GROUP INC added | 532,090 | $8M | 0.5% | 2025-Q4 stale |
| Diameter Capital Partners LP trimmed | 843,506 | $6M | 0.4% | 2025-Q1 stale |
| Pacer Advisors, Inc. new | 540,240 | $6M | 0.3% | 2025-Q3 stale |
| Tejara Capital Ltd added | 754,351 | $5M | 0.3% | 2025-Q2 stale |
| Long Focus Capital Management, LLC trimmed | 350,000 | $4M | 0.2% | 2025-Q3 stale |
| Lighthouse Investment Partners, LLC added | 180,000 | $3M | 0.2% | 2025-Q4 stale |
Ownership over time
Tracked institutional holder count and total shares held by filing quarter (independent scales). The curated-era tail and any mid-ingest latest quarter are handled honestly — a partial quarter is not drawn as a collapse.
Reading this table
Funds hold the same stock for different reasons — an index fund “holds” almost everything, an active manager sizes a name to a mandate and a benchmark, and each fund entered at its own price and time. Because 13F is filed up to 45 days after quarter-end, every row is a backward-looking snapshot; a manager may have traded since. Share-class siblings (a company’s A and C shares) are rolled up to one line so a dual-class name is never double-counted. Compare like-for-like. A large holder is not an endorsement, and a fund exiting is not a warning — this is a starting question, not a verdict.
About 13F filings
A Form 13F is a quarterly disclosure that institutional investment managers with over $100 million in US-listed equities must file with the SEC. In plain English: it is a snapshot of the long stock positions a fund held at the end of a quarter. It covers long US-listed equities only — not short positions, options, cash, or private holdings — and the funds shown are the large sample we track, not the complete 13F universe.