Q2 2026 13F · SEC CIK 1584258
Dumac, Inc.
Investment managerFiled 2026-08-11 for Q2 2026. Open the filing ↗ · All SEC filings ↗
- Reported 13F value
- $1.1B
- Reported positions
- 16
- Top holdings a year, 3 yrs
- +2.6%
- Average holding period
- 3 qtrs
Dumac, Inc. is an investment manager that reported 16 positions worth $1.1B in its Q2 2026 13F, filed 2026-08-11. Its largest holdings were Vanguard Index Fds (VOO, 76.4%), Schwab Strategic Tr (SCHH, 17.1%), Nvidia Corporation (NVDA, 1.1%). A portfolio copying its top holdings returned 2.6% a year over the last 3 years, against 17.1% for the S&P 500.
Dumac, Inc. holdings all 16 positions.
Weights are shares of the filer's total reported 13F value, compared with Q1 2026. Share changes may reflect splits; weight changes also reflect price moves. A 13F shows long US-listed positions only, up to 135 days after the fact.
| Stock | % of 13F value | Share change | Reported value |
|---|---|---|---|
| VOOVanguard Index Fds | 76.4% | +15.8% | $840.3M |
| SCHHSchwab Strategic Tr | 17.1% | +0.0% | $187.8M |
| NVDANvidia Corporation | 1.1% | — | $11.8M |
| GOOGLAlphabet Inc | 1.0% | — | $11.4M |
| INDAIshares Tr | 0.9% | +0.0% | $10.0M |
| MSFTMicrosoft Corp | 0.9% | — | $9.6M |
| AMZNAmazon Com Inc | 0.8% | — | $9.2M |
| METAMeta Platforms Inc | 0.6% | — | $6.9M |
| ECHIshares Inc | 0.5% | +179.6% | $5.4M |
| KSPIKaspi Kz Jsc | 0.2% | +0.0% | $2.7M |
| TSLATesla Inc | 0.2% | — | $2.2M |
| MMYTMakemytrip Limited Mauritius | 0.1% | -33.0% | $1.4M |
| SKMSK Telecom Co., Ltd. Sponsored | 0.1% | — | $691K |
| SGMTSagimet Biosciences Inc | 0.1% | +0.0% | $550K |
| ARCOArcos Dorados Hldgs Inc | 0.0% | +0.0% | $491K |
| NEXMNexmetals Mining Corp. | 0.0% | +0.0% | $73K |
What Dumac, Inc. bought and sold in Q2 2026, against Q1 2026.
New positions
- NVDA Nvidia Corporation1.1% of 13F
- GOOGL Alphabet Inc1.0% of 13F
- MSFT Microsoft Corp0.9% of 13F
- AMZN Amazon Com Inc0.8% of 13F
- META Meta Platforms Inc0.6% of 13F
- TSLA Tesla Inc0.2% of 13F
- SKM SK Telecom Co., Ltd. Sponsored0.1% of 13F
Added to
- ECH Ishares Inc+179.6% shares
- VOO Vanguard Index Fds+15.8% shares
Reduced
- MMYT Makemytrip Limited Mauritius-33.0% shares
Sold out
- ZTO Zto Express Cayman Incwas 0.3%
Share counts compared with the Q1 2026 13F; a split also changes share counts.
How the holdings did against the S&P 500.
- 1 year
- -3.3% /yr
- S&P 500 +20.1%
- 3 years
- +2.6% /yr
- S&P 500 +17.1%
- 5 years
- -3.0% /yr
- S&P 500 +8.9%
A portfolio of the filer's 20 largest 13F positions, weighted by value, bought the trading day after each 13F was filed and held until the next one was: what copying this filer could have earned. 13Fs show long US-listed positions only, so this is an estimate of the stock picks, not the fund's reported returns.
Reported 13F value by quarter.
| Quarter | 13F value | Positions |
|---|---|---|
| Q2 2026 | $1.1B | 16 |
| Q1 2026 | $820.4M | 10 |
| Q4 2025 | $651.0M | 10 |
| Q2 2025 | $15.9M | 7 |
| Q1 2025 | $25.1M | 9 |
| Q4 2024 | $64.8M | 10 |
| Q3 2024 | $30.8M | 10 |
| Q2 2024 | $31.3M | 11 |
| Q1 2024 | $27.6M | 11 |
| Q4 2023 | $32.4M | 15 |
| Q3 2023 | $37.3M | 18 |
| Q2 2023 | $30.5M | 13 |
Questions about Dumac, Inc.'s portfolio
What stocks does Dumac, Inc. own?
Dumac, Inc.'s latest 13F, for Q2 2026 and filed Aug 11, 2026, lists 16 positions worth $1.1B. The largest are Vanguard Index Fds (VOO) at 76.4%, Schwab Strategic Tr (SCHH) at 17.1%, Nvidia Corporation (NVDA) at 1.1%, Alphabet Inc (GOOGL) at 1.0% and Ishares Tr (INDA) at 0.9%.
What did Dumac, Inc. buy last quarter?
In Q2 2026, Dumac, Inc. added a new position in Nvidia Corporation (NVDA), a new position in Alphabet Inc (GOOGL), a new position in Microsoft Corp (MSFT), a new position in Amazon Com Inc (AMZN), a new position in Meta Platforms Inc (META), Ishares Inc (ECH) (+179.6% shares) and Vanguard Index Fds (VOO) (+15.8% shares), compared with its Q1 2026 filing.
What did Dumac, Inc. sell last quarter?
In Q2 2026, Dumac, Inc. sold all of Zto Express Cayman Inc (ZTO) and Makemytrip Limited Mauritius (MMYT) (-33.0% shares), compared with its Q1 2026 filing.
How has Dumac, Inc.'s portfolio performed?
A portfolio copying Dumac, Inc.'s 20 largest 13F holdings each quarter, from the day each filing was public, returned +2.6% a year over the last 3 years, against +17.1% for the S&P 500. Over 1 year: -3.3% against +20.1%. Over 5 years: -3.0% a year against +8.9%.
When is Dumac, Inc.'s next 13F filing due?
13F filings are due 45 days after each quarter ends. Dumac, Inc.'s filing for the quarter ending Sep 30, 2026 is due by Nov 14, 2026; this page updates the day after it is published.