10 institutions reported holding $5.2M of SIXTH STREET SPECIALTY LENDI (TSLX) in SEC 13F filings for 2026-06-30. Largest institutional holders: CONFLUENCE INVESTMENT MANAGEMENT LLC ($3.6M), Hennion & Walsh Asset Management, Inc. ($621,829), INSPIRION WEALTH ADVISORS, LLC ($267,487), Mallini Complete Financial Planning LLC ($247,523), Westmount Partners, LLC ($223,725). Source: SEC Form 13F.
| Rank | Institution | Value | Shares | Change |
|---|---|---|---|---|
| 1 | CONFLUENCE INVESTMENT MANAGEMENT LLC | $3.6M | 211,954 | Added |
| 2 | Hennion & Walsh Asset Management, Inc. | $621,829 | 36,216 | Added |
| 3 | INSPIRION WEALTH ADVISORS, LLC | $267,487 | 15,426 | Hold |
| 4 | Mallini Complete Financial Planning LLC | $247,523 | 14,416 | Trimmed |
| 5 | Westmount Partners, LLC | $223,725 | 13,030 | Hold |
| 6 | Miller Global Investments, LLC | $178,001 | 10,367 | Hold |
| 7 | Hilltop National Bank | $11,744 | 684 | Hold |
| 8 | HARBOR INVESTMENT ADVISORY, LLC | $4,135 | 241 | Trimmed |
| 9 | GAMMA Investing LLC | $0 | 0 | Exited |
| 10 | Worth Asset Management, LLC | $0 | 0 | Exited |
Source: SEC Form 13F filings · as of 2026-06-30