2 institutions reported holding $281,250 of THORNBURG INVESTMENT INCOME BUILDER I (TIBIX) in SEC 13F filings for 2026-03-31. Largest institutional holders: Garton & Associates Financial Advisors LLC ($245,336), Financial Gravity Asset Management, Inc. ($35,914). Source: SEC Form 13F.
| Rank | Institution | Value | Shares | Change |
|---|---|---|---|---|
| 1 | Garton & Associates Financial Advisors LLC | $245,336 | 6,779 | Added |
| 2 | Financial Gravity Asset Management, Inc. | $35,914 | 992 | Added |
Source: SEC Form 13F filings · as of 2026-03-31