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TBLD · Thornburg Income Builder Opportunities Trust · Holdings

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$20.32 +0.03 (+0.15%) At close · Oct 26
Rebalance outlook locked
Market Cap
$651.26M
Shares
32.08M
Volume · Oct 26 22.1K Avg daily vol (3M) 59.94K

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.

Use institutional holdings through the 13F API or MCP → See every holder of TBLD: 13F, 13D and 13G, insiders and funds →
The Sep 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. Each fund's Change is measured against its own previous reported quarter, shown in the Reported column. Pick a completed quarter in the Quarter selector below to put every fund on one quarter and see the stock-wide activity breakdown.
Holders: 58
Total Value: $221,875,303
Total Shares: 10,188,138

Institutional Ownership Trend

21 quarters

Holder Concentration

Across 56 13F filers
Top Holder
18.6%
Sep 2023 → Jun 2026 · range 18.6% – 27.0%
of institutional value
Top 5
51.5%
Sep 2023 → Jun 2026 · range 51.5% – 64.6%
of institutional value
Top 10
78.1%
Sep 2023 → Jun 2026 · range 75.0% – 84.0%
of institutional value
HHI
793
Sep 2023 → Jun 2026 · range 793 – 1,163
Broadly held

Who Holds TBLD

Last 8 quarters through Sep 30, 2026 (filing window open)

Each kind of 13F filer's share of the common shares 13F filers report. Holder type comes from regulatory records, never the filer's name; style, turnover and horizon are measured from each filer's own 13F book. The quarter selector does not change this card.

Jun 30, 2026, the newest closed quarter: 56 filers, like-for-like change +10.6%; actively managed books +11.0%; index-like books +6.9%.

Holder type Share Filers Change
Registered adviser 35.9% 24 +24.2%
Adviser 2.5% 3 +3.9%
Bank 28.0% 7 -0.5%
Broker-dealer 3.3% 1 +7.2%
Holding company 8.3% 2 +7.7%
Unknown 21.9% 19 +9.2%

The Sep 30, 2026 filing window is still open, so its bar carries the Jun 30, 2026 positions of filers that have not filed yet.

How the mix is measured

Shares are 13F common shares restated to today's split basis; options and principal amounts are left out. The change compares only filers with a 13F in both quarters and keeps each filer in its bucket of the later quarter on both sides; a filer that continues under a new CIK is compared through its successor. Holder type comes from each filer's current regulatory profile; client base and private funds come from the Form ADV roster current at each quarter end (rosters from December 2019, so an earlier quarter reads Unknown). Style, turnover, horizon and book size are measured from each filer's 13F book in the newest measured quarter, and Not measured means none was. Actively managed books are those measured systematic-like, concentrated or diversified active.

Conviction and Crowding

56 13F filers, quarter ended Jun 30, 2026

Measured across every 13F filer's common-share book once the quarter's filing window closed. Crowding counts filers with high turnover or that advise private funds on Form ADV.

Conviction holders
1
1.79% of filers hold it in their top 10
Mar 31, 2026: 1
Holders above 5%
1
median weight 0.006%
Mar 31, 2026: 1
Crowding
—
no cover-page share count is dated within about a year of the quarter end
Private-fund advisers
—
of shares outstanding
Institutional ownership
—
no cover-page share count is dated within about a year of the quarter end
Top 10 holders
78.1%
of 13F shares, Herfindahl 0.079
Active holders
+11.0%
like-for-like share change of active filers
5% stakes on record
1
0 13D, 1 13G (1 institutional, 0 passive, 0 exempt)
How long holders have held it value-weighted 13.4 quarters
Under 1 year 10.8% 1 to 3 years 28.4% 3 years or more 60.7% Since coverage start 0.000%

Managers in the top fifth by current three-year FundScore alpha were net buyers of $0 (0 buying, 0 selling).

Estimated Holder Cost Basis

Quarter ended Jun 30, 2026, on that quarter's share basis

Estimated, never filed: each 13F buy is costed at its quarter's average traded price and each sale keeps the average cost, so this is what holders paid on average if they traded evenly through each quarter.

Estimated avg cost
$17.89
estimated per share
Mar 31, 2026: $17.27
Quarter-end price
$22.07
implied by 13F values
Estimated gain or loss
+23.4%
price against the estimated cost
Estimated at a loss
0.000%
of costed 13F value

Estimated cost covers 74.2% of the 13F shares; positions already held when a filer's 13F history starts, or bought in a quarter without a trusted average price, have no estimate.

Holder type: Registered adviser 26 Adviser 3 Bank 7 Broker-dealer 1 Holding company 2 Unknown 19
Showing 58 of 58
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Holder Value (USD) % of 13F Shares Open
UBS Group AG $40,964,347 18.46% 1,856,110
DKM Wealth Management, Inc. $19,781,499 8.92% 973,499
STIFEL FINANCIAL CORP $18,473,605 8.33% 837,046
MORGAN STANLEY $17,035,722 7.68% 771,895
Atlas Wealth LLC $15,689,408 7.07% 710,893
RAYMOND JAMES FINANCIAL INC $15,572,546 7.02% 705,598
Advisors Asset Management, Inc. $12,534,943 5.65% 567,963
Kera Capital Partners, Inc. $10,619,973 4.79% 481,195
ROYAL BANK OF CANADA $10,208,345 4.60% 462,544
WELLS FARGO & COMPANY/MN $9,433,466 4.25% 427,434
LPL Financial LLC $7,187,382 3.24% 325,663
Shaker Financial Services, LLC $4,334,906 1.95% 213,332
Rockefeller Capital Management L.P. $3,555,278 1.60% 161,091
Sanctuary Advisors, LLC $3,078,124 1.39% 139,471
Private Advisor Group, LLC $2,670,955 1.20% 121,022
Hennion & Walsh Asset Management, Inc. $2,127,402 0.96% 104,695
WEALTH ENHANCEMENT ADVISORY SERVICES, LLC $2,050,613 0.92% 100,916
Thomas J. Herzfeld Advisors, Inc. $1,776,171 0.80% 80,479
Alessandra Capital Management, LLC $1,743,662 0.79% 79,006
EVOLVE PRIVATE WEALTH, LLC $1,720,533 0.78% 77,958
Invesco Ltd. $1,713,338 0.77% 77,632
Janney Montgomery Scott LLC $1,536,712 0.69% 69,629
D.A. DAVIDSON & CO. $1,528,082 0.69% 69,238
Kestra Advisory Services, LLC $1,487,650 0.67% 67,406
OSAIC HOLDINGS, INC. $1,240,753 0.56% 56,219
Concurrent Investment Advisors, LLC $1,232,143 0.56% 60,637
Dakota Wealth Management $1,036,870 0.47% 46,981
FINANCIAL MANAGEMENT NETWORK INC $987,795 0.45% 48,612
PMG Family Office LLC $987,409 0.45% 48,593
WEDBUSH SECURITIES INC $904,930 0.41% 44,534
Cambridge Investment Research Advisors, Inc. $846,252 0.38% 38,344
Advisory Advocates, LLC $760,752 0.34% 34,470
Closed-End Fund Advisors, Inc. $757,817 0.34% 34,337
HUNTER ASSOCIATES INVESTMENT MANAGEMENT LLC $581,152 0.26% 28,600
Steward Partners Investment Advisory, LLC $549,962 0.25% 24,919
DAVENPORT & Co LLC $486,785 0.22% 23,956
OPPENHEIMER & CO INC $471,728 0.21% 23,215
FIFTH THIRD BANCORP $470,091 0.21% 21,300
NewEdge Advisors, LLC $364,441 0.16% 16,513
HB Wealth Management, LLC $332,557 0.15% 16,366
BROWN ADVISORY INC $302,800 0.14% 13,720
Allegheny Financial Group $276,890 0.12% 12,546
&PARTNERS $276,316 0.12% 12,520
LaSalle St. Investment Advisors, LLC $269,364 0.12% 12,205
BROWN BROTHERS HARRIMAN & CO $265,347 0.12% 12,023
HICKS CAPITAL MANAGEMENT LLC $261,233 0.12% 12,856
Beacon Pointe Advisors, LLC $253,805 0.11% 11,500
Cetera Investment Advisers $243,763 0.11% 11,045
Prosperity Consulting Group, LLC $220,700 0.10% 10,000
TRUIST FINANCIAL CORP $209,687 0.09% 9,501
BLUE BELL PRIVATE WEALTH MANAGEMENT, LLC $148,928 0.07% 6,748
US BANCORP \DE\ $110,261 0.05% 4,996
WEBSTER BANK, N. A. $66,210 0.03% 3,000
NORTHWESTERN MUTUAL WEALTH MANAGEMENT CO $59,103 0.03% 2,678
SOA Wealth Advisors, LLC. $38,159 0.02% 1,729
Clark Wealth Partners $13,411 0.01% 660
THURSTON, SPRINGER, MILLER, HERD & TITAK, INC. $12,192 0.01% 600
WHITTIER TRUST CO $11,035 0.00% 500
Key facts CIK 1820378 CUSIP 885213108 13F (30d) 15 filings 15 filers Visit website Investor relations