2 institutions reported holding $8,588 of NATIONAL ENERGY SERVICES REU (NESRW) in SEC 13F filings for 2026-03-31. Largest institutional holders: SIMPLEX TRADING, LLC ($6,441), GROUP ONE TRADING LLC ($2,147). Source: SEC Form 13F.
| Rank | Institution | Value | Shares | Change |
|---|---|---|---|---|
| 1 | SIMPLEX TRADING, LLC | $6,441 | 300 | New |
| 2 | GROUP ONE TRADING LLC | $2,147 | 100 | New |
Source: SEC Form 13F filings · as of 2026-03-31