3 institutions reported holding $5.3M of NORTHERN TR CORP (NTRSP) in SEC 13F filings for 2026-06-30. Largest institutional holders: GROUP ONE TRADING LLC ($2.0M), IMC-Chicago, LLC ($1.8M), SIMPLEX TRADING, LLC ($1.4M). Source: SEC Form 13F.
| Rank | Institution | Value | Shares | Change |
|---|---|---|---|---|
| 1 | GROUP ONE TRADING LLC | $2.0M | 11,700 | Trimmed |
| 2 | IMC-Chicago, LLC | $1.8M | 10,600 | Trimmed |
| 3 | SIMPLEX TRADING, LLC | $1.4M | 8,000 | Added |
来源：SEC 13F 申报文件 · 截至 2026-06-30