Ranked by reported Q1 2026 13F market value
Share of total reported institutional value in NBR held by the largest 10 / 25 filers.
| # | Institution | Shares Held | Market Value | QoQ Change | Ownership % | % of Fund |
|---|---|---|---|---|---|---|
| 1 | BlackRock, Inc. | 1.3M | $111.8M | +13.7% | 8.137% | 0.00% |
| 2 | ADAGE CAPITAL PARTNERS GP, L.L.C. | 740K | $63.7M | -41.3% | 4.637% | 0.10% |
| 3 | VANGUARD CAPITAL MANAGEMENT LLC | 629K | $54.2M | — | 3.943% | 0.00% |
| 4 | AMERICAN CENTURY COMPANIES INC | 506K | $43.5M | +20.0% | 3.170% | 0.02% |
| 5 | Parallax Volatility Advisers, L.P. | 516K | $42.7M | +29.1% | 3.232% | 0.23% |
| 6 | CHARLES SCHWAB INVESTMENT MANAGEMENT INC | 472K | $40.6M | -2.8% | 2.956% | 0.01% |
| 7 | CIBC World Markets Inc. | 468K | $40.3M | -6.3% | 2.931% | 0.07% |
| 8 | STATE STREET CORP | 465K | $40.0M | +14.2% | 2.914% | 0.00% |
| 9 | DIMENSIONAL FUND ADVISORS LP | 448K | $38.5M | +42.1% | 2.806% | 0.01% |
| 10 | MILLER VALUE PARTNERS, LLC | 444K | $38.2M | -26.3% | 2.785% | 9.98% |
| 11 | TWO SIGMA INVESTMENTS, LP | 393K | $33.8M | +70.4% | 2.464% | 0.03% |
| 12 | VANGUARD PORTFOLIO MANAGEMENT LLC | 384K | $33.0M | — | 2.405% | 0.00% |
| 13 | GEODE CAPITAL MANAGEMENT, LLC | 352K | $30.3M | +2.9% | 2.205% | 0.00% |
| 14 | GENDELL JEFFREY L | 343K | $29.5M | 0.0% | 2.148% | 0.40% |
| 15 | AQR CAPITAL MANAGEMENT LLC | 283K | $24.3M | +436.3% | 1.771% | 0.01% |
| 16 | MORGAN STANLEY | 202K | $17.4M | -51.0% | 1.265% | 0.00% |
| 17 | CITADEL ADVISORS LLC | 190K | $16.4M | +43.7% | 1.191% | 0.01% |
| 18 | BANK OF AMERICA CORP /DE/ | 152K | $13.1M | +191.8% | 0.952% | 0.00% |
| 19 | Invesco Ltd. | 145K | $12.5M | +80.1% | 0.911% | 0.00% |
| 20 | GOLDMAN SACHS GROUP INC | 139K | $11.9M | +15.2% | 0.869% | 0.00% |
| 21 | NORTHERN TRUST CORP | 137K | $11.8M | +15.8% | 0.856% | 0.00% |
| 22 | SUSQUEHANNA INTERNATIONAL GROUP, LLP | 128K | $11.1M | -21.6% | 0.805% | 0.00% |
| 23 | D. E. Shaw & Co., Inc. | 118K | $10.2M | +186.3% | 0.740% | 0.01% |
| 24 | Hara Capital LLC | 112K | $9.7M | -10.2% | 0.704% | 4.83% |
| 25 | BRIDGEWAY CAPITAL MANAGEMENT, LLC | 98K | $8.4M | +24.6% | 0.612% | 0.17% |
denotes a marquee investor (Buffett, Burry, ARK, Tiger Global, Pershing Square, Baupost and other widely-followed managers). “% of Fund” shows how much of that investor’s total 13F portfolio is invested in NBR — a direct measure of their conviction.
Filings activity in NBR during Q1 2026, grouped by how each filer changed its position.
8 quarters of 13F filings · Δ columns show change vs prior quarter
| Quarter | Inst. Holders | Δ Holders | Ownership % | Δ Ownership | Total 13F Value | Δ Value |
|---|---|---|---|---|---|---|
| Q1 2026 | 228 | +22% | 60.22% | +18.89 pp | $977M | +46% |
| Q4 2025 | 187 | +11% | 41.33% | +5.28 pp | $670M | +15% |
| Q3 2025 | 168 | +11% | 36.05% | +11.69 pp | $585M | +48% |
| Q2 2025 | 152 | 12% | 24.36% | 3.74 pp | $395M | 13% |
| Q1 2025 | 172 | +4.2% | 28.10% | 0.22 pp | $456M | 0.8% |
| Q4 2024 | 165 | 6.8% | 28.32% | 6.44 pp | $459M | 19% |
| Q3 2024 | 177 | +5.4% | 34.76% | +2.41 pp | $564M | +7.5% |
| Q2 2024 | 168 | — | 32.35% | — | $525M | — |
Source: SEC 13F institutional filings. Ownership % requires market cap data and will show once linked. Δ columns compare to the immediately prior filed quarter.
Quick answers to the most common questions about buying NBR stock.
Based on Q1 2026 13F filings, institutional ownership of Nabors Industries Ltd. stands at 60.2%, held across 228 reporting institutions.
BlackRock, Inc. is the largest reported institutional holder of NBR, with approximately 1,298,692 shares worth $0.11B as of Q1 2026.
Yes — 3 widely-followed marquee investors appear among the top 25 institutional holders of NBR, including TWO SIGMA INVESTMENTS, LP, CITADEL ADVISORS LLC, SUSQUEHANNA INTERNATIONAL GROUP, LLP.
Our composite Smart Money Score for NBR is 81 out of 100 (Strong Smart Money). It combines net institutional buying activity, ownership shift, marquee investor presence, and holder-count growth.
72 institutions opened new positions in NBR during Q1 2026, while 31 fully exited. 133 added to existing positions and 21 trimmed.
NBR institutional ownership rose by 18.89 percentage points quarter-over-quarter, with a net change of +41 holders.
The top 10 institutions account for 52.6% of all reported 13F value in NBR, and the top 25 account for 80.6%.
All data is sourced from SEC Form 13F filings, which institutional investment managers with at least $100M in assets are required to file each quarter. We process every 13F filing from EDGAR and recompute the aggregates after each cycle. Insider transactions are sourced from Form 4 filings.
Nabors Industries Ltd. (NBR) Institutional Ownership