4 institutions reported holding $19.4M of SLM CORP (SLMAP) in SEC 13F filings for 2026-03-31. Largest institutional holders: HRT FINANCIAL LP ($15.0M), IMC-Chicago, LLC ($2.6M), SIMPLEX TRADING, LLC ($1.3M), GROUP ONE TRADING LLC ($554,519). Source: SEC Form 13F.
| Rank | Institution | Value | Shares | Change |
|---|---|---|---|---|
| 1 | HRT FINANCIAL LP | $15.0M | 700,000 | New |
| 2 | IMC-Chicago, LLC | $2.6M | 119,500 | Trimmed |
| 3 | SIMPLEX TRADING, LLC | $1.3M | 60,900 | Trimmed |
| 4 | GROUP ONE TRADING LLC | $554,519 | 25,900 | Trimmed |
Source: SEC Form 13F filings · as of 2026-03-31