DS
Duncker Streett & Co Inc 13F Portfolio Snapshot & Holdings (Q3 2026)
Duncker Streett & Co IncCIK: 0001020585
Diversified strategyMomentum followerLong-term holder
Total reported value
$598.0M
Reporting period: 2026-09-30 · Number of holdings: 504
DUNCKER STREETT & CO INC disclosed 504 holdings in its latest 13F filing for the period ending 2026-09-30, with total reported value of $598.0M and a quarterly turnover rate of 17.1%.
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Personality snowflake
- Concentration
- 6.61
- Portfolio Stability
- 17.09
- Momentum
- 100
- Sector conviction
- 52.81
- Diversification
- 100
- Sizing Uniformity
- 72.9
Duncker Streett & Co Inc's disclosed holdings carry a Herfindahl concentration index of 0.017 — mathematically equivalent to about 60 equally-sized positions, well below its 504 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 2.71), with a handful of outsized bets alongside many smaller positions.
No strong tilt toward either adding to existing winners or initiating outsized new positions was observed in the latest reported quarter.
Source and citation information
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Recent moves
View source Form 13F filing on SEC.govNew buy 30233Q108
Sold out XOM
Add MSFT
+4.9% $7.1M
Trim BWXT
-77.7% -$3.5M
Add AAPL
-0.1% $3.7M
Add TMO
0.0% $3.1M
Holdings Map
New buyAddUnchangedTrim
Top 10 holdings by weight
Full holdings list this quarter
Showing top 200 holdings (of 504 total)
| # | Ticker | Issuer | Asset Subclass | Weight | Weight Change | Shares Change | 4Q Trend |
|---|---|---|---|---|---|---|---|
| 1 | AAPL | Apple Inc | Stock-Tech | 4.77% | +0.57% | -0.11% | |
| 2 | AVGO | Broadcom Inc | Stock-Tech | 4.01% | -0.36% | -0.21% | |
| 3 | MSFT | Microsoft CORP | Stock-Tech | 3.89% | +1.16% | +4.94% | |
| 4 | NVDA | Nvidia CORP | Stock-Tech | 3.68% | +0.45% | +0.88% | |
| 5 | GOOGL | Alphabet Inc-cl A | Stock-Comm Services | 3.57% | -0.18% | -0.07% | |
| 6 | ABBV | Abbvie Inc | Stock-Healthcare | 2.85% | +0.07% | -0.18% | |
| 7 | JPM | Jpmorgan Chase & Co | Stock-Financials | 2.71% | -0.01% | -0.29% | |
| 8 | ✓ | Stock-Other | 2.48% | +2.48% | NEW | ||
| 9 | MA | Mastercard Inc - A | Stock-Financials | 2.48% | +0.14% | -0.00% | |
| 10 | XLK | Ss Technology Select Sector | ETF-Tech | 2.48% | +0.06% | +0.64% | |
| 11 | PANW | Palo Alto Networks Inc | Stock-Tech | 2.34% | -0.01% | -13.39% | |
| 12 | AMZN | Amazon.com Inc | Stock-Consumer Disc | 2.29% | +0.09% | +0.58% | |
| 13 | TMO | Thermo Fisher Scientific Inc | Stock-Healthcare | 1.98% | +0.49% | — | |
| 14 | HEI | Heico CORP | Stock-Industrials | 1.82% | -0.34% | +0.03% | |
| 15 | CRWD | Crowdstrike Holdings Inc - A | Stock-Tech | 1.72% | +0.47% | +303.07% | |
| 16 | MRK | Merck & Co. Inc. | Stock-Healthcare | 1.66% | +0.20% | +1.44% | |
| 17 | PWR | Quanta Services Inc | Stock-Industrials | 1.18% | -0.16% | -0.12% | |
| 18 | TGT | Target CORP | Stock-Consumer Disc | 1.15% | +0.23% | +5.27% | |
| 19 | LLY | Eli Lilly & Co | Stock-Healthcare | 1.12% | -0.01% | +3.89% | |
| 20 | APH | Amphenol Corp-cl A | Stock-Tech | 1.08% | -0.05% | +101.74% | |
| 21 | GS | Goldman Sachs Group Inc | Stock-Financials | 1.06% | -0.12% | +1.68% | |
| 22 | DHR | Danaher CORP | Stock-Healthcare | 1.03% | -0.36% | -35.62% | |
| 23 | IWM | Ishares Russell 2000 ETF | ETF-Small Cap | 1.03% | -0.09% | +0.56% | |
| 24 | CVX | Chevron CORP | Stock-Energy | 0.93% | +0.21% | +5.38% | |
| 25 | COST | Costco Wholesale CORP | Stock-Consumer Staples | 0.92% | -0.03% | +0.23% | |
| 26 | GOOG | Alphabet Inc-cl C | Stock-Comm Services | 0.91% | -0.05% | -0.99% | |
| 27 | PG | Procter & Gamble Co/the | Stock-Consumer Staples | 0.90% | — | +1.47% | |
| 28 | KLAC | Kla CORP | Stock-Tech | 0.87% | -0.48% | +1.47% | |
| 29 | WMT | Walmart Inc | Stock-Consumer Staples | 0.85% | -0.09% | -0.35% | |
| 30 | SPY | Ss Spdr S&p 500 ETF Trust-us | ETF-Large Cap & Growth | 0.84% | +0.03% | +2.95% | |
| 31 | LOW | Lowe's Cos Inc | Stock-Consumer Disc | 0.82% | -0.16% | +1.18% | |
| 32 | ICE | Intercontinental Exchange In | Stock-Financials | 0.72% | +0.12% | -1.07% | |
| 33 | V | Visa Inc-class A Shares | Stock-Financials | 0.70% | +0.02% | +0.07% | |
| 34 | URI | United Rentals Inc | Stock-Industrials | 0.68% | -0.10% | — | |
| 35 | AME | Ametek Inc | Stock-Industrials | 0.67% | +0.01% | — | |
| 36 | JNJ | Johnson & Johnson | Stock-Healthcare | 0.67% | +0.02% | +0.16% | |
| 37 | ORLY | O'reilly Automotive Inc | Stock-Consumer Disc | 0.65% | -0.10% | -5.22% | |
| 38 | LIN | Linde plc | Stock-Materials | 0.63% | -0.06% | +1.06% | |
| 39 | TJX | Tjx Companies Inc | Stock-Consumer Disc | 0.62% | -0.10% | -0.16% | |
| 40 | SLB | Slb LTD | Stock-Energy | 0.60% | +0.04% | +2.33% | |
| 41 | SPGI | S&p Global Inc | Stock-Financials | 0.59% | -0.02% | -0.08% | |
| 42 | ABT | Abbott Laboratories | Stock-Healthcare | 0.55% | +0.04% | -0.36% | |
| 43 | HD | Home Depot Inc | Stock-Consumer Disc | 0.54% | -0.14% | -0.31% | |
| 44 | IYW | Ishares Ustechnology ETF | ETF-Tech | 0.53% | +0.01% | -0.65% | |
| 45 | QCOM | Qualcomm Inc | Stock-Tech | 0.52% | -0.01% | +0.02% | |
| 46 | TDG | Transdigm Group Inc | Stock-Industrials | 0.52% | -0.15% | -4.25% | |
| 47 | ITW | Illinois Tool Works | Stock-Industrials | 0.51% | -0.03% | +0.06% | |
| 48 | IGSB | Ishares 1-5y Inv Grade CORP | ETF-Other | 0.46% | +0.03% | +10.24% | |
| 49 | SCHX | Schwab US Large-cap ETF | ETF-Other | 0.46% | — | -0.00% | |
| 50 | NEM | Newmont CORP | Stock-Materials | 0.45% | +0.09% | +2.84% |
1–50 of 200
Portfolio Performance
Performance for Q4 2026
+1.2%
Performance Last 4 Quarters
+8.7%
- Stdev
- +10.8%
- Beta
- +0.84
- Alpha
- -1.3%
- Max Drawdown
- -7.1%
- Annualized Perf
- +17.9%
- Batting Avg vs S&P
- +30.6%
- Sortino
- +3.29
- Stutzer
- +0.46
- Treynor
- +0.21
- Sterling
- +1.15
- Calmar
- +2.53
- Information Ratio
- -1.28
- Tracking Error
- +3.9%
- Stdev Down
- +5.2%
- Winning Months %
- +69.4%
- Losing Months %
- +30.6%
- Best 12 Months
- +29.4%
- Worst 12 Months
- +5.5%
- Efficiency Ratio
- +0.63
- Sharpe
- +1.59
- Stdev Sectors
- +8.8%
- Skewness
- -0.04
- Kurtosis
- -0.11
- Upside Potential
- +4.87
Reported value over time
Sector allocation
Sector allocation over time
Quarterly history
| Period | Holdings | Total value | Stability | Top holdings | |
|---|---|---|---|---|---|
| 2026 Q3 | 504 | $598.0M | 17 | ||
| 2026 Q2 | 521 | $590.8M | 22 | ||
| 2026 Q1 | 535 | $526.1M | 24 | ||
| 2025 Q4 | 534 | $562.7M | 17 | ||
| 2025 Q3 | 534 | $574.0M | 28 | ||
| 2025 Q2 | 512 | $548.0M | 0 | ||
| 2025 Q1 | 503 | $504.7M | 100 | ||
| 2024 Q4 | 530 | $538.6M | 0 | ||
| 2024 Q3 | 488 | $548.0M | 0 | ||
| 2024 Q2 | 487 | $520.2M | 0 | ||
| 2024 Q1 | 477 | $506.5M | 0 | ||
| 2023 Q4 | 490 | $473.7M | 0 | ||
| 2023 Q3 | 488 | $429.7M | 0 | ||
| 2023 Q2 | 503 | $447.1M | 0 | ||
| 2023 Q1 | 486 | $419.9M | 0 | ||
| 2022 Q4 | 509 | $414.2M | 0 | ||
| 2022 Q3 | 482 | $385.6M | 0 | ||
| 2022 Q2 | 494 | $417.3M | 0 | ||
| 2022 Q1 | 490 | $502.8M | 0 | ||
| 2021 Q4 | 515 | $580.8M | 0 | ||
| 2021 Q3 | 513 | $528.1M | 0 | ||
| 2021 Q2 | 499 | $542.4M | 98 | ||
| 2021 Q1 | 503 | $524.4M | 13 | ||
| 2020 Q4 | 576 | $516.9M | 16 | ||
| 2020 Q3 | 540 | $458.1M | 14 | ||
| 2020 Q2 | 554 | $420.3M | 22 | ||
| 2020 Q1 | 643 | $374.5M | 26 | ||
| 2019 Q4 | 665 | $476.7M | 16 | ||
| 2019 Q3 | 338 | $430.1M | 16 | ||
| 2019 Q2 | 673 | $445.6M | 10 | ||
| 2019 Q1 | 689 | $434.0M | 18 | ||
| 2018 Q4 | 694 | $373.5M | 19 | ||
| 2018 Q3 | 708 | $440.3M | 13 | ||
| 2018 Q2 | 709 | $403.2M | 12 | ||
| 2018 Q1 | 706 | $395.1M | 13 | ||
| 2017 Q4 | 701 | $389.0M | 23 | ||
| 2017 Q3 | 713 | $330.4M | 11 | ||
| 2017 Q2 | 724 | $320.7M | 10 | ||
| 2017 Q1 | 742 | $319.0M | 13 | ||
| 2016 Q4 | 732 | $300.7M | 12 | ||
| 2016 Q3 | 717 | $288.7M | 11 | ||
| 2016 Q2 | 710 | $281.2M | 9 | ||
| 2016 Q1 | 722 | $270.1M | 12 | ||
| 2015 Q4 | 744 | $266.8M | 13 | ||
| 2015 Q3 | 729 | $257.2M | 14 | ||
| 2015 Q2 | 727 | $286.9M | 15 | ||
| 2015 Q1 | 728 | $305.6M | 10 | ||
| 2014 Q4 | 723 | $305.0M | 14 | ||
| 2014 Q3 | 732 | $293.3M | 11 | ||
| 2014 Q2 | 691 | $309.1M | 13 | ||
| 2014 Q1 | 676 | $282.6M | 10 | ||
| 2013 Q4 | 679 | $277.8M | 14 | ||
| 2013 Q3 | 659 | $247.0M | 13 | ||
| 2013 Q2 | 674 | $261.1M | 0 |
Holding changes this quarter
Duncker Streett & Co Inc's most significant position changes for 2026-09-30: New buy: ; Sold out: Exxon Mobil CORP (XOM); New buy: Ss Spdr S&p Biotech ETF (XBI); Sold out: Oneok Inc (OKE); New buy: .
Showing top 200 changes by size (of 531 total)
| # | Ticker | Issuer | Weight Change | Shares Change | Action |
|---|---|---|---|---|---|
| 1 | ✓ | +2.5% | NEW | New buy | |
| 2 | MSFT | Microsoft CORP | +1.2% | +4.94% | Add |
| 3 | AAPL | Apple Inc | +0.6% | -0.11% | Trim |
| 4 | TMO | Thermo Fisher Scientific Inc | +0.5% | — | Unchanged |
| 5 | CRWD | Crowdstrike Holdings Inc - A | +0.5% | +303.07% | Add |
| 6 | NVDA | Nvidia CORP | +0.5% | +0.88% | Add |
| 7 | XBI | Ss Spdr S&p Biotech ETF | +0.4% | NEW | New buy |
| 8 | MEDP | Medpace Holdings Inc | +0.4% | +718.57% | Add |
| 9 | TGT | Target CORP | +0.2% | +5.27% | Add |
| 10 | CVX | Chevron CORP | +0.2% | +5.38% | Add |
| 11 | MRK | Merck & Co. Inc. | +0.2% | +1.44% | Add |
| 12 | MA | Mastercard Inc - A | +0.1% | -0.00% | Trim |
| 13 | ICE | Intercontinental Exchange In | +0.1% | -1.07% | Trim |
| 14 | XLV | Ss Health Care Select Sector | +0.1% | +28.09% | Add |
| 15 | AMZN | Amazon.com Inc | +0.1% | +0.58% | Add |
| 16 | NEM | Newmont CORP | +0.1% | +2.84% | Add |
| 17 | ABBV | Abbvie Inc | +0.1% | -0.18% | Trim |
| 18 | VWO | Vanguard Ftse Emerging Marke | +0.1% | +64.35% | Add |
| 19 | XLK | Ss Technology Select Sector | +0.1% | +0.64% | Add |
| 20 | ABT | Abbott Laboratories | 0% | -0.36% | Trim |
| 21 | T | At&t Inc | 0% | +9.93% | Add |
| 22 | SLB | Slb LTD | 0% | +2.33% | Add |
| 23 | SPY | Ss Spdr S&p 500 ETF Trust-us | 0% | +2.95% | Add |
| 24 | IGSB | Ishares 1-5y Inv Grade CORP | 0% | +10.24% | Add |
| 25 | AMGN | Amgen Inc | 0% | — | Unchanged |
| 26 | SCHC | Schwab Intl Small-cap Equity | 0% | +139.46% | Add |
| 27 | ✓ | 0% | NEW | New buy | |
| 28 | TXN | Texas Instruments Inc | 0% | +81.74% | Add |
| 29 | CTAS | Cintas CORP | 0% | — | Unchanged |
| 30 | V | Visa Inc-class A Shares | 0% | +0.07% | Add |
| 31 | BMY | Bristol-myers Squibb Co | 0% | — | Unchanged |
| 32 | JNJ | Johnson & Johnson | 0% | +0.16% | Add |
| 33 | CME | Cme Group Inc | 0% | -1.36% | Trim |
| 34 | VEU | Vanguard Ftse All-world Ex-u | 0% | +23.12% | Add |
| 35 | EMR | Emerson Electric Co | 0% | +0.01% | Add |
| 36 | RSP | Invesco S&p 500 Equal Weight | 0% | +12.03% | Add |
| 37 | ACN | Accenture plc | 0% | -6.41% | Trim |
| 38 | PFE | Pfizer Inc | 0% | -1.92% | Trim |
| 39 | FTNT | Fortinet Inc | 0% | — | Unchanged |
| 40 | IYW | Ishares Ustechnology ETF | 0% | -0.65% | Trim |
| 41 | FTEC | Fidelity Msci Info Tech Indx | 0% | -0.46% | Trim |
| 42 | GSY | Invesco Ultra Short Duration | 0% | +4.53% | Add |
| 43 | VO | Vanguard Mid-cap ETF | 0% | +6.80% | Add |
| 44 | AME | Ametek Inc | 0% | — | Unchanged |
| 45 | SCHG | Schwab US Large-cap Growth | 0% | -2.27% | Trim |
| 46 | XLC | Ss Comm Select Sector Spdr | 0% | +7.76% | Add |
| 47 | DE | Deere & Co | 0% | — | Unchanged |
| 48 | GLD | Spdr Gold Shares | 0% | +8.76% | Add |
| 49 | PM | Philip Morris International | 0% | +0.47% | Add |
| 50 | COP | Conocophillips | 0% | — | Unchanged |
1–50 of 200
Filing History
FAQ
What is Duncker Streett & Co Inc and what type of investor is it?
Duncker Streett & Co 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 (2026-09-30), the firm manages a tracked equity portfolio valued at approximately $598.0M, spread across 504 disclosed positions.
What are Duncker Streett & Co Inc's largest equity positions?
Based on the latest 13F filing, Duncker Streett & Co Inc's top holdings by market value are:
1. Apple Inc (AAPL) — $28.5M (4.8%)
2. Broadcom Inc (AVGO) — $24.0M (4.0%)
3. Microsoft CORP (MSFT) — $23.3M (3.9%)
4. Nvidia CORP (NVDA) — $22.0M (3.7%)
5. Alphabet Inc-cl A (GOOGL) — $21.3M (3.6%)
What changes did Duncker Streett & Co Inc make in its most recent portfolio filing?
In the latest reported quarter, Duncker Streett & Co Inc made 138 notable position adjustments: 5 new positions were initiated, 56 existing holdings were added to, 75 positions were partially reduced, and 2 were completely exited. The largest of these moves: New buy: ; Sold out: Exxon Mobil CORP (XOM); New buy: Ss Spdr S&p Biotech ETF (XBI); Sold out: Oneok Inc (OKE); New buy:
What sectors does Duncker Streett & Co Inc focus on?
Duncker Streett & Co Inc is concentrated in the following sectors based on its current disclosed equity portfolio:
• Information Technology: 31.5%
• Health Care: 15.9%
• Financials: 14.3%
• Industrials: 12.7%
• Consumer Discretionary: 8.7%
• Communication Services: 6.4%
Investment Profile
Duncker Streett & Co Inc returned an annualized 17.9% over the trailing 36 months — underperforming the S&P 500 by 1.3 points — based on a reconstructed track record of its disclosed 13F positions, with a beta of 0.83 (less volatile than the market) and a 31% quarterly batting average against the index.
Its portfolio is broadly diversified and long-term-holding, with 31.5% of the portfolio concentrated in Information Technology.
It has added to its AAPL position over the past two quarters (+$8.1M, now $28.5M), while trimming ISRG over the same stretch (-$3.7M, still holding $511.1K).
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Developer Access
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