3 institutions reported holding $5.6M of RAYONIER ADVANCED MATLS INC (RYAM-PA) in SEC 13F filings for 2026-03-31. Largest institutional holders: SIMPLEX TRADING, LLC ($4.0M), IMC-Chicago, LLC ($1.0M), GROUP ONE TRADING LLC ($572,319). Source: SEC Form 13F.
| Rank | Institution | Value | Shares | Change |
|---|---|---|---|---|
| 1 | SIMPLEX TRADING, LLC | $4.0M | 365,300 | Trimmed |
| 2 | IMC-Chicago, LLC | $1.0M | 92,300 | Trimmed |
| 3 | GROUP ONE TRADING LLC | $572,319 | 51,700 | Trimmed |
Source: SEC Form 13F filings · as of 2026-03-31