7 institutions reported holding $532,689 of LISTED FDS TR (MEDX) in SEC 13F filings for 2026-03-31. Largest institutional holders: SUSQUEHANNA INTERNATIONAL GROUP, LLP ($274,207), HORIZON KINETICS ASSET MANAGEMENT LLC ($172,847), OSAIC HOLDINGS, INC. ($79,777), HighMark Wealth Management LLC ($5,563), FMR LLC ($266). Source: SEC Form 13F.
| Rank | Institution | Value | Shares | Change |
|---|---|---|---|---|
| 1 | SUSQUEHANNA INTERNATIONAL GROUP, LLP | $274,207 | 8,232 | New |
| 2 | HORIZON KINETICS ASSET MANAGEMENT LLC | $172,847 | 5,189 | New |
| 3 | OSAIC HOLDINGS, INC. | $79,777 | 2,395 | Added |
| 4 | HighMark Wealth Management LLC | $5,563 | 167 | Hold |
| 5 | FMR LLC | $266 | 8 | Hold |
| 6 | WELLS FARGO & COMPANY/MN | $29 | 1 | New |
| 7 | UBS Group AG | $0 | 0 | Exited |
Source: SEC Form 13F filings · as of 2026-03-31