Thornburg Investment Management Inc holds a focused book of 171 stocks worth $9.6B as of Q1 2026 (disclosed May 12, 2026, a ~42-day 13F lag). This quarter they opened Totalenergies SE and trimmed Citigroup Inc. Their largest long position is Totalenergies SE at 11% of the equity book. Cloning the disclosed picks since 2013 would be +270% (+10.8%/yr). That is a simulation of the disclosed long book, not audited returns.
The reported book (valued from quarter-end) returned +285.9%, a 15.7-point gap that is the cost of the ~42-day 13F disclosure lag a real follower can't avoid.
Growth of $10,000 cloning Thornburg Investment Management Inc's disclosed long 13F book, rebalanced on each filing date (so it reflects each quarter's actual reporting lag, ~42 days for the latest filing, with no look-ahead), total-return basis (dividends reinvested), derived from end-of-day prices. “Their reported book” values the same picks from quarter-end, before they were public. S&P 500 is SPY total return over the same window. Excludes shorts, cash, options and non-13F holdings. Not investment advice.
Top-heavy: focused book
Share of the disclosed book in its largest positions. A higher top-5 share means a more concentrated, higher-conviction portfolio.
98% mapped to company sectors
Direct operating-company sectors from our SIC-based security master. ETF/fund and unclassified holdings stay visible separately; this is not ETF look-through exposure.
Estimated $ traded · quarter-end prices, no cost basis
Other tracked managers holding the same core names as Thornburg Investment Management Inc
| Manager / fund | Shared names | Their $ in those |
|---|---|---|
| BlackRock, Inc. | 79 / 80 | $862.3B |
| MORGAN STANLEY | 79 / 80 | $213.2B |
| JPMORGAN CHASE & CO | 79 / 80 | $212.8B |
| BANK OF AMERICA CORP /DE/ | 79 / 80 | $146.8B |
| ROYAL BANK OF CANADA | 79 / 80 | $80.6B |
| FRANKLIN RESOURCES INC | 79 / 80 | $77.9B |
| UBS Group AG | 79 / 80 | $68.4B |
| WELLS FARGO & COMPANY/MN | 79 / 80 | $57.1B |
Ranked by how many of Thornburg Investment Management Inc's top 80 disclosed names each fund also holds: a cross-fund conviction signal from the latest 13F of every tracked manager.
Bars show each stock's share of the portfolio. Click a row for its position history.
| # | Security | Value | Shares | % Port | Last move | History |
|---|---|---|---|---|---|---|
| 1 | Totalenergies SE ACT | $1.1B | 11.66M | 11.3% | ▲New New position | |
| 2 | Citigroup Inc COM NEW | $905.9M | 7.99M | 9.4% | ▼−0.4% Reduced · −29K sh | |
| 3 | AT&T Inc COM | $900.0M | 31.05M | 9.3% | ▲+6.9% Added · +2.0M sh | |
| 4 | Broadcom Inc COM | $644.9M | 2.08M | 6.7% | ▲+1.2% Added · +26K sh | |
| 5 | AstraZeneca PLC ORD | $555.7M | 2.86M | 5.8% | ▲New New position | |
| 6 | Merck & Co Inc COM | $448.5M | 3.73M | 4.7% | —Held | |
| 7 | Cme Group Inc COM | $338.3M | 1.15M | 3.5% | ▼−0.1% Reduced · −1K sh | |
| 8 | TC Energy Corp COM | $295.0M | 4.72M | 3.1% | ▲+17% Added · +680K sh | |
| 9 | Taiwan Semiconductor MFG Ltd SPONSORED ADS | $237.0M | 701.4K | 2.5% | ▲+8.9% Added · +57K sh | |
| 10 | Cisco Sys Inc COM | $226.1M | 2.91M | 2.3% | ▲+1.6% Added · +45K sh | |
| 11 | Enbridge Inc COM | $197.2M | 3.64M | 2.0% | ▲+1.1% Added · +39K sh | |
| 12 | Equitable Hldgs Inc COM | $185.3M | 4.99M | 1.9% | ▲+2.1% Added · +104K sh | |
| 13 | Medtronic PLC SHS | $174.8M | 2.02M | 1.8% | ▲+4.6% Added · +88K sh | |
| 14 | Home Depot Inc COM | $171.4M | 521.0K | 1.8% | ▲+0.2% Added · +1K sh | |
| 15 | Regions Financial Corp New COM | $170.2M | 6.52M | 1.8% | ▲+4.6% Added · +285K sh | |
| 16 | Freeport-McMoran Inc CL B | $166.7M | 2.84M | 1.7% | ▲+1.5% Added · +41K sh | |
| 17 | Canadian Pacific Kansas City COM | $159.6M | 2.03M | 1.7% | ▼−3.5% Reduced · −74K sh | |
| 18 | Linde PLC SHS | $135.4M | 274.4K | 1.4% | ▲+0.7% Added · +2K sh | |
| 19 | Alcon AG ORD SHS | $128.4M | 1.71M | 1.3% | ▼−2.2% Reduced · −39K sh | |
| 20 | Alphabet Inc CAP STK CL A | $122.2M | 424.9K | 1.3% | ▲+0.6% Added · +3K sh | |
| 21 | South Bow Corp COM | $120.7M | 3.63M | 1.3% | ▲+28% Added · +803K sh | |
| 22 | Ferrovial SE ORD SHS | $111.6M | 1.74M | 1.2% | ▲+0.9% Added · +15K sh | |
| 23 | Abbvie Inc COM | $109.4M | 502.8K | 1.1% | ▲+25% Added · +102K sh | |
| 24 | Kanzhun Limited SPONSORED ADS | $83.5M | 6.23M | 0.9% | ▲+1.9% Added · +116K sh | |
| 25 | Lyondellbasell Industries NV SHS - A - | $78.7M | 977.1K | 0.8% | —Held | |
| 26 | Alibaba Group Hldg Ltd SPONSORED ADS | $76.6M | 610.2K | 0.8% | ▲+4.5% Added · +26K sh | |
| 27 | Schwab Charles Corp COM | $76.1M | 809.6K | 0.8% | ▲+7.2% Added · +55K sh | |
| 28 | Meta Platforms Inc CL A | $72.2M | 126.2K | 0.7% | ▼−2.7% Reduced · −4K sh | |
| 29 | Chimera Invt Corp COM SHS | $68.7M | 5.48M | 0.7% | ▲+3.9% Added · +208K sh | |
| 30 | SLR Investment Corp COM | $66.3M | 4.63M | 0.7% | ▲+6.1% Added · +266K sh | |
| 31 | Pfizer Inc COM | $63.0M | 2.24M | 0.7% | ▲+1.8% Added · +40K sh | |
| 32 | Eli Lilly & Co COM | $55.3M | 60.2K | 0.6% | ▲+33% Added · +15K sh | |
| 33 | Mercadolibre Inc COM | $53.6M | 31.0K | 0.6% | ▲+3.6% Added · +1K sh | |
| 34 | Mastercard Incorporated CL A | $48.9M | 97.9K | 0.5% | ▼−1.1% Reduced · −1K sh | |
| 35 | Booking Holdings Inc COM | $47.2M | 11.2K | 0.5% | ▲+169% Added · +7K sh | |
| 36 | Caci Intl Inc CL A | $46.0M | 84.6K | 0.5% | ▲+1.0% Added · +822 sh | |
| 37 | L3harris Technologies Inc COM | $43.7M | 126.7K | 0.5% | —Held | |
| 38 | Adobe Inc COM | $42.2M | 173.5K | 0.4% | ▲+75% Added · +74K sh | |
| 39 | TJX Cos Inc New COM | $42.1M | 263.7K | 0.4% | ▲+1.2% Added · +3K sh | |
| 40 | Midcap Financial Invstmnt Co COM NEW | $36.4M | 3.24M | 0.4% | ▲+3.2% Added · +100K sh | |
| 41 | Transdigm Group Inc COM | $34.4M | 29.7K | 0.4% | ▼−38% Reduced · −18K sh | |
| 42 | Ferrari N V COM | $32.5M | 96.0K | 0.3% | ▲+9.0% Added · +8K sh | |
| 43 | Sea Ltd SPONSORD ADS | $30.6M | 369.9K | 0.3% | ▲+14% Added · +46K sh | |
| 44 | Vertiv Holdings Co COM CL A | $28.8M | 115.0K | 0.3% | ▼−14% Reduced · −19K sh | |
| 45 | Shopify Inc CL A SUB VTG SHS | $27.7M | 233.6K | 0.3% | ▲+70% Added · +96K sh | |
| 46 | ASML Hldg NV N Y REGISTRY SHS | $25.8M | 19.5K | 0.3% | ▼−4.0% Reduced · −803 sh | |
| 47 | Capital One Finl Corp COM | $25.5M | 139.7K | 0.3% | ▼−24% Reduced · −43K sh | |
| 48 | Advanced Micro Devices Inc COM | $24.9M | 122.6K | 0.3% | ▼−0.5% Reduced · −675 sh | |
| 49 | Technipfmc PLC COM | $23.0M | 333.2K | 0.2% | ▼−22% Reduced · −92K sh | |
| 50 | Arista Networks Inc COM SHS | $20.7M | 168.3K | 0.2% | ▲+4.7% Added · +8K sh |
The public view is the crawlable proof. The same sourced dataset is available through REST and MCP for agents, research scripts, and back-office tools.
This fund page is the Follow view. The Build view lets your agent pull holdings, quarter changes, overlap, and source filings through API or MCP.
curl -H "Authorization: Bearer YOUR_API_KEY" \ "https://arkolith.com/api/v1/funds/1145020/holdings"
Use Arkolith to show THORNBURG INVESTMENT MANAGEMENT INC's latest holdings, largest changes, and filing provenance.
As-of date vs the date the SEC received each filing
| Quarter | As of | Filed | Positions | Value | Form |
|---|---|---|---|---|---|
| Q1 2026 | Mar 31, 2026 | May 12, 2026 | 171 | $9.6B | 13F-HR |
| Q4 2025 | Dec 31, 2025 | Feb 13, 2026 | 176 | $7.9B | 13F-HR |
| Q3 2025 | Sep 30, 2025 | Nov 12, 2025 | 176 | $7.7B | 13F-HR |
| Q2 2025 | Jun 30, 2025 | Aug 13, 2025 | 177 | $7.8B | 13F-HR |
| Q1 2025 | Mar 31, 2025 | May 8, 2025 | 182 | $71.5B | 13F-HR |
| Q4 2024 | Dec 31, 2024 | Feb 14, 2025 | 188 | $7.6B | 13F-HR |
| Q3 2024 | Sep 30, 2024 | Nov 12, 2024 | 192 | $7.7B | 13F-HR |
| Q2 2024 | Jun 30, 2024 | Aug 8, 2024 | 189 | $7.1B | 13F-HR |
| Q1 2024 | Mar 31, 2024 | May 13, 2024 | 187 | $7.2B | 13F-HR |
| Q4 2023 | Dec 31, 2023 | Feb 8, 2024 | 196 | $6.9B | 13F-HR |
| Q3 2023 | Sep 30, 2023 | Nov 13, 2023 | 196 | $6.1B | 13F-HR |
| Q2 2023 | Jun 30, 2023 | Aug 8, 2023 | 184 | $6.2B | 13F-HR |
| Q1 2023 | Mar 31, 2023 | May 9, 2023 | 185 | $6.1B | 13F-HR |
| Q4 2022 | Dec 31, 2022 | Feb 8, 2023 | 201 | $5.9B | 13F-HR |
| Q3 2022 | Sep 30, 2022 | Nov 15, 2022 | 200 | $5.6B | 13F-HR |
| Q2 2022 | Jun 30, 2022 | Aug 5, 2022 | 205 | $6.5B | 13F-HR |
| Q1 2022 | Mar 31, 2022 | May 12, 2022 | 200 | $7.6B | 13F-HR |
| Q4 2021 | Dec 31, 2021 | Feb 10, 2022 | 208 | $8.5B | 13F-HR |
| Q3 2021 | Sep 30, 2021 | Nov 10, 2021 | 210 | $8.1B | 13F-HR |
| Q2 2021 | Jun 30, 2021 | Oct 12, 2021 | 206 | $8.7B | 13F-HR/A |
| Q1 2021 | Mar 31, 2021 | May 14, 2021 | 207 | $8.6B | 13F-HR |
| Q4 2020 | Dec 31, 2020 | Feb 9, 2021 | 227 | $8.4B | 13F-HR |
| Q3 2020 | Sep 30, 2020 | Nov 5, 2020 | 164 | $7.6B | 13F-HR |
Holdings from SEC EDGAR 13F-HR filings, updated quarterly, filed up to 45 days after quarter-end. Public domain. The book and weighting are long equity only; disclosed put/call options are listed separately and excluded from those totals. The performance line is a simulation of the disclosed long book, not an audited return.