8 institutions reported holding $22.4M of SPDR SERIES TRUST (QNDX) in SEC 13F filings for 2026-06-30. Largest institutional holders: ALTFEST L J & CO INC ($12.6M), FLOW TRADERS U.S. LLC ($3.2M), Tandem Investment Partners LLC ($2.3M), CITADEL ADVISORS LLC ($1.6M), BlackDiamond Wealth Management, LLC ($1.5M). Source: SEC Form 13F.
| Rank | Institution | Value | Shares | Change |
|---|---|---|---|---|
| 1 | ALTFEST L J & CO INC | $12.6M | 506,601 | New |
| 2 | FLOW TRADERS U.S. LLC | $3.2M | 126,932 | New |
| 3 | Tandem Investment Partners LLC | $2.3M | 94,010 | New |
| 4 | CITADEL ADVISORS LLC | $1.6M | 64,607 | New |
| 5 | BlackDiamond Wealth Management, LLC | $1.5M | 59,643 | New |
| 6 | JANE STREET GROUP, LLC | $765,209 | 30,682 | New |
| 7 | SUSQUEHANNA INTERNATIONAL GROUP, LLP | $417,396 | 16,736 | New |
| 8 | GROUP ONE TRADING LLC | $12,470 | 500 | New |
Source: SEC Form 13F filings · as of 2026-06-30