DI
Dumac, Inc. 13F Holdings Tracker (Q2 2026)
Dumac, Inc.CIK: 0001584258
Concentrated strategySector-focusedMomentum follower
Total reported value
$1.1B
Reporting period: 2026-06-30 · Number of holdings: 16
DUMAC, INC. disclosed 16 holdings in its latest 13F filing for the period ending 2026-06-30, with total reported value of $1.1B and a quarterly turnover rate of 29.7%.
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Personality snowflake
- Concentration
- 100
- Portfolio Stability
- 29.69
- Momentum
- 100
- Sector conviction
- 100
- Diversification
- 32
- Sizing Uniformity
- 69.36
Dumac, Inc.'s disclosed holdings carry a Herfindahl concentration index of 0.613 — mathematically equivalent to about 2 equally-sized positions, well below its 16 actual disclosed holdings. That gap points to a strategy built around a small core of high-conviction bets rather than broad diversification.
Position sizes vary widely across the portfolio (a coefficient of variation of 3.06), with a handful of outsized bets alongside many smaller positions.
Recent activity leans toward adding more aggressively to already-large existing positions than to newly initiated ones (a 37.9 percentage-point tilt) — a pattern consistent with a momentum-following approach.
Sector classification currently covers about 5% of this portfolio's disclosed value; the remainder includes holdings (e.g. unmapped tickers, options, or other security types) not yet covered by our sector mapping.
Source and citation information
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Recent moves
View source Form 13F filing on SEC.govTrim SCHH
0.0% $17.4M
New buy NVDA
New buy GOOGL
New buy MSFT
New buy AMZN
New buy META
Holdings Map
New buyAddUnchangedTrim
Top 10 holdings by weight
Full holdings list this quarter
| # | Ticker | Issuer | Asset Subclass | Weight | Weight Change | Shares Change | 4Q Trend |
|---|---|---|---|---|---|---|---|
| 1 | VOO | Vanguard S&p 500 ETF | ETF-Large Cap & Growth | 76.36% | -0.60% | +15.80% | |
| 2 | SCHH | Schwab US Reit ETF | ETF-Other | 17.06% | -3.71% | — | |
| 3 | NVDA | Nvidia CORP | Stock-Tech | 1.07% | +1.07% | NEW | |
| 4 | GOOGL | Alphabet Inc-cl A | Stock-Comm Services | 1.04% | +1.04% | NEW | |
| 5 | INDA | Ishares Msci India ETF | ETF-Other | 0.91% | -0.24% | — | |
| 6 | MSFT | Microsoft CORP | Stock-Tech | 0.87% | +0.87% | NEW | |
| 7 | AMZN | Amazon.com Inc | Stock-Consumer Disc | 0.84% | +0.84% | NEW | |
| 8 | META | Meta Platforms Inc-class A | Stock-Comm Services | 0.62% | +0.62% | NEW | |
| 9 | ECH | Ishares Msci Chile ETF | ETF-Other | 0.49% | +0.25% | +179.59% | |
| 10 | KSPI | Jsc Kaspi.kz Adr | Stock-Other | 0.25% | -0.03% | — | |
| 11 | TSLA | Tesla Inc | Stock-Consumer Disc | 0.20% | +0.20% | NEW | |
| 12 | MMYT | MakeMyTrip Limited | Stock-Other | 0.13% | -0.05% | -33.00% | |
| 13 | SKM | Sk Telecom Co Ltd-spon Adr | Stock-Other | 0.06% | +0.06% | NEW | |
| 14 | SGMT | Sagimet Biosciences Inc-a | Stock-Other | 0.05% | — | — | |
| 15 | ARCO | Arcos Dorados Holdings Inc. | Stock-Other | 0.04% | -0.02% | — | |
| 16 | NEXM | Nexmetals Mining CORP | Stock-Other | 0.01% | — | — |
Portfolio Performance
Performance for Q3 2026
+2.1%
Performance Last 4 Quarters
-1.8%
- Stdev
- +43.4%
- Beta
- +1.97
- Alpha
- -4.4%
- Max Drawdown
- -26.2%
- Annualized Perf
- +24.6%
- Batting Avg vs S&P
- +43.3%
- Sortino
- +1.48
- Stutzer
- +0.22
- Treynor
- +0.16
- Sterling
- +0.84
- Calmar
- +0.94
- Information Ratio
- +0.34
- Tracking Error
- +37.1%
- Stdev Down
- +20.6%
- Winning Months %
- +53.3%
- Losing Months %
- +46.7%
- Best 12 Months
- +89.2%
- Worst 12 Months
- -3.9%
- Efficiency Ratio
- +0.3
- Sharpe
- +0.7
- Stdev Sectors
- +8.2%
- Skewness
- +1.27
- Kurtosis
- +4.1
- Upside Potential
- +3.09
Reported value over time
Sector allocation
Sector allocation over time
Quarterly history
| Period | Holdings | Total value | Stability | Top holdings | |
|---|---|---|---|---|---|
| 2026 Q2 | 16 | $1.1B | 30 | ||
| 2026 Q1 | 10 | $820.4M | 24 | ||
| 2025 Q4 | 10 | $651.0M | 100 | ||
| 2025 Q2 | 7 | $15.9M | 0 | ||
| 2025 Q1 | 9 | $25.1M | 100 | ||
| 2024 Q4 | 10 | $64.8M | 0 | ||
| 2024 Q3 | 10 | $30.8M | 0 | ||
| 2024 Q2 | 11 | $31.3M | 0 | ||
| 2024 Q1 | 11 | $27.6M | 0 | ||
| 2023 Q4 | 15 | $32.4M | 0 | ||
| 2023 Q3 | 18 | $37.3M | 0 | ||
| 2023 Q2 | 13 | $30.5M | 0 | ||
| 2023 Q1 | 13 | $28.8M | 0 | ||
| 2022 Q4 | 12 | $16.1M | 0 | ||
| 2022 Q3 | 14 | $17.7M | 0 | ||
| 2022 Q2 | 17 | $27.9M | 0 | ||
| 2022 Q1 | 21 | $40.9M | 0 | ||
| 2021 Q4 | 27 | $31.3M | 0 | ||
| 2021 Q3 | 27 | $58.3M | 0 | ||
| 2021 Q2 | 30 | $88.8M | 100 | ||
| 2021 Q1 | 30 | $72.3M | 100 | ||
| 2020 Q4 | 35 | $128.3M | 100 | ||
| 2018 Q4 | 32 | $13.0M | 85 | ||
| 2018 Q3 | 26 | $22.9M | 15 | ||
| 2018 Q2 | 27 | $21.5M | 100 | ||
| 2018 Q1 | 44 | $73.1M | 65 | ||
| 2017 Q4 | 42 | $104.7M | 63 | ||
| 2017 Q3 | 44 | $94.5M | 39 | ||
| 2017 Q2 | 47 | $81.7M | 67 | ||
| 2017 Q1 | 51 | $107.7M | 58 | ||
| 2016 Q4 | 1 | $75.6M | — |
Holding changes this quarter
Dumac, Inc.'s most significant position changes for 2026-06-30: New buy: Nvidia CORP (NVDA); New buy: Alphabet Inc-cl A (GOOGL); New buy: Microsoft CORP (MSFT); New buy: Amazon.com Inc (AMZN); New buy: Meta Platforms Inc-class A (META).
| # | Ticker | Issuer | Weight Change | Shares Change | Action |
|---|---|---|---|---|---|
| 1 | NVDA | Nvidia CORP | +1.1% | NEW | New buy |
| 2 | GOOGL | Alphabet Inc-cl A | +1% | NEW | New buy |
| 3 | MSFT | Microsoft CORP | +0.9% | NEW | New buy |
| 4 | AMZN | Amazon.com Inc | +0.8% | NEW | New buy |
| 5 | META | Meta Platforms Inc-class A | +0.6% | NEW | New buy |
| 6 | ECH | Ishares Msci Chile ETF | +0.3% | +179.59% | Add |
| 7 | TSLA | Tesla Inc | +0.2% | NEW | New buy |
| 8 | SKM | Sk Telecom Co Ltd-spon Adr | +0.1% | NEW | New buy |
| 9 | SGMT | Sagimet Biosciences Inc-a | — | — | Unchanged |
| 10 | NEXM | Nexmetals Mining CORP | — | — | Unchanged |
| 11 | ARCO | Arcos Dorados Holdings Inc. | 0% | — | Unchanged |
| 12 | KSPI | Jsc Kaspi.kz Adr | 0% | — | Unchanged |
| 13 | MMYT | MakeMyTrip Limited | -0.1% | -33.00% | Trim |
| 14 | INDA | Ishares Msci India ETF | -0.2% | — | Unchanged |
| 15 | ZTO | Zto Express Cayman Inc-adr | -0.3% | EXIT | Sold out |
| 16 | VOO | Vanguard S&p 500 ETF | -0.6% | +15.80% | Add |
| 17 | SCHH | Schwab US Reit ETF | -3.7% | — | Unchanged |
Filing History
FAQ
What is Dumac, Inc. and what type of investor is it?
Dumac, Inc. is an investment manager that files SEC Form 13F quarterly, disclosing its U.S. public equity holdings to regulators. As of the most recent reporting period (2026-06-30), the firm manages a tracked equity portfolio valued at approximately $1.1B, spread across 16 disclosed positions.
What are Dumac, Inc.'s largest equity positions?
Based on the latest 13F filing, Dumac, Inc.'s top holdings by market value are:
1. Vanguard S&p 500 ETF (VOO) — $840.3M (76.4%)
2. Schwab US Reit ETF (SCHH) — $187.8M (17.1%)
3. Nvidia CORP (NVDA) — $11.8M (1.1%)
4. Alphabet Inc-cl A (GOOGL) — $11.4M (1.0%)
5. Ishares Msci India ETF (INDA) — $10.0M (0.9%)
What changes did Dumac, Inc. make in its most recent portfolio filing?
In the latest reported quarter, Dumac, Inc. made 11 notable position adjustments: 7 new positions were initiated, 2 existing holdings were added to, 1 positions were partially reduced, and 1 were completely exited. The largest of these moves: New buy: Nvidia CORP (NVDA); New buy: Alphabet Inc-cl A (GOOGL); New buy: Microsoft CORP (MSFT); New buy: Amazon.com Inc (AMZN); New buy: Meta Platforms Inc-class A (META)
What sectors does Dumac, Inc. focus on?
Dumac, Inc. is concentrated in the following sectors based on its current disclosed equity portfolio:
• Information Technology: 41.9%
• Communication Services: 35.8%
• Consumer Discretionary: 22.3%
💡
Data Source Notice: AlphaSMO is the web's most authoritative 13F / Inside Trader database. Institutional holdings and insider trades presented here are precisely computed to deliver accurate portfolio reporting.
Investment Profile
Dumac, Inc. returned an annualized 24.6% over the trailing 30 months — underperforming the S&P 500 by 4.4 points — based on a reconstructed track record of its disclosed 13F positions, with a beta of 1.97 (more volatile than the market) and a 43% quarterly batting average against the index.
Its portfolio is concentrated and moderately active, with 41.9% of the portfolio concentrated in Information Technology.
Its turnover score has fallen from 100 to 30 over the past 4 quarters — a shift toward longer holding periods.
It has added to its VOO position over the past two quarters (+$373.8M, now $840.3M), while trimming MMYT over the same stretch (-$1.9M, still holding $1.4M).
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