Skip to main content
TBLD logo

TBLD · Thornburg Income Builder Opportunities Trust

$21.78 +0.13 (+0.60%) At close · Jul 28
Market Cap
$694.57M
Shares
32.08M

Institutional ownership from SEC Form 13F filings. Investment managers with more than $100 million in U.S. equities must disclose their positions every quarter, within 45 days of quarter-end, so the holdings shown can lag the market by up to a quarter.

The Jun 30, 2026 filing window is still open — showing the latest known positions. Funds that have not filed yet carry their prior-quarter positions; a fund that filed without this stock counts as sold out.
Holders: 53
Total Value: $191,798,691
Total Shares: 9,040,675

Institutional Ownership Trend

20 quarters

Holder Concentration

Across 54 13F filers
Top Holder
20.5%
Jun 2023 → Mar 2026 · range 18.6% – 27.0%
of institutional value
Top 5
54.7%
Jun 2023 → Mar 2026 · range 52.8% – 64.6%
of institutional value
Top 10
80.1%
Jun 2023 → Mar 2026 · range 75.0% – 84.0%
of institutional value
HHI
871
Jun 2023 → Mar 2026 · range 807 – 1,163
Broadly held
Showing 53 of 53
Export CSV
Holder Value (USD) % of 13F Shares Open
Key facts CIK 1820378 CUSIP 885213108 13F (30d) 15 filings 15 filers Visit website