GD
Great Diamond Partners, LLC — 13F Portfolio Analysis & Stock Picks (Q3 2026)
Great Diamond Partners, LLCCIK: 0001801112
Diversified strategyMomentum followerQuality / disciplined sizing
Total reported value
$595.5M
Reporting period: 2026-09-30 · Number of holdings: 238
Great Diamond Partners, LLC disclosed 238 holdings in its latest 13F filing for the period ending 2026-09-30, with total reported value of $595.5M and a quarterly turnover rate of 20.6%.
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Personality snowflake
- Concentration
- 6.32
- Portfolio Stability
- 20.64
- Momentum
- 100
- Sector conviction
- 49.66
- Diversification
- 100
- Sizing Uniformity
- 83.35
Great Diamond Partners, LLC's disclosed holdings carry a Herfindahl concentration index of 0.016 — mathematically equivalent to about 63 equally-sized positions, well below its 238 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 1.67), 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.
Sector classification currently covers about 43% 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.govNew buy 30233Q108
Trim GLW
-11.6% -$3.5M
Sold out TPR
Add MSFT
-1.2% $3.7M
Trim KLAC
+2.2% -$3.1M
New buy IDNA
Holdings Map
New buyAddUnchangedTrim
Top 10 holdings by weight
Full holdings list this quarter
Showing top 200 holdings (of 238 total)
| # | Ticker | Issuer | Asset Subclass | Weight | Weight Change | Shares Change | 4Q Trend |
|---|---|---|---|---|---|---|---|
| 1 | VTI | Vanguard Total Stock Mkt ETF | ETF-Other | 5.54% | -0.06% | +0.17% | |
| 2 | IWV | Ishares Russell 3000 ETF | ETF-Other | 5.19% | -0.10% | -0.78% | |
| 3 | IEFA | Ishares Core Msci Eafe ETF | ETF-Other | 4.66% | -0.06% | +0.90% | |
| 4 | VXF | Vanguard Extended Market ETF | ETF-Other | 2.38% | -0.23% | -0.68% | |
| 5 | MSFT | Microsoft CORP | Stock-Tech | 2.35% | +0.58% | -1.18% | |
| 6 | AVEM | Avantis Emerging Markets Eq | ETF-Emerging Markets | 2.13% | -0.08% | +1.31% | |
| 7 | AGGH | Simplify Aggregate Bond ETF | ETF-Other | 2.08% | -0.01% | +8.58% | |
| 8 | DFAI | Dimensional International Co | ETF-Other | 1.94% | +0.01% | +2.61% | |
| 9 | PG | Procter & Gamble Co/the | Stock-Consumer Staples | 1.92% | -0.07% | -0.36% | |
| 10 | IBDS | Ishrs Ibnds Dec 27 CORP ETF | ETF-Other | 1.70% | +0.35% | +30.05% | |
| 11 | DYNF | Ishrs US E F R A Etf-usd Inc | ETF-Other | 1.63% | +0.21% | +14.77% | |
| 12 | RSP | Invesco S&p 500 Equal Weight | ETF-Large Cap & Growth | 1.61% | +0.46% | +46.79% | |
| 13 | AAPL | Apple Inc | Stock-Tech | 1.56% | +0.18% | +0.63% | |
| 14 | PYLD | Pimco Multisector Bond Actv | ETF-Other | 1.48% | +0.01% | +7.92% | |
| 15 | VUG | Vanguard Growth ETF | ETF-Other | 1.47% | +0.02% | -1.09% | |
| 16 | AGZ | Ishares Agency Bond ETF | ETF-Other | 1.39% | -0.01% | +4.48% | |
| 17 | NVDA | Nvidia CORP | Stock-Tech | 1.34% | +0.11% | -1.79% | |
| 18 | IBDU | Ishares Ibonds Dec 2029 Term | ETF-Other | 1.30% | +0.36% | +45.00% | |
| 19 | IDXX | Idexx Laboratories Inc | Stock-Healthcare | 1.26% | -0.03% | +0.78% | |
| 20 | IEI | Ishares 3-7 Year Treasury Bo | ETF-Gov Bonds | 1.23% | +0.01% | +6.60% | |
| 21 | IJH | Ishares Core S&p Midcap ETF | ETF-Other | 1.19% | -0.04% | +5.77% | |
| 22 | AVGO | Broadcom Inc | Stock-Tech | 1.11% | -0.12% | -0.24% | |
| 23 | IBDT | Ishares Ibonds Dec 2028 ETF | ETF-Other | 1.04% | +0.34% | +52.65% | |
| 24 | GOOGL | Alphabet Inc-cl A | Stock-Comm Services | 1.03% | -0.09% | -2.18% | |
| 25 | KLAC | Kla CORP | Stock-Tech | 1.00% | -0.55% | +2.16% | |
| 26 | HGER | Harbor Commodity All Weather | ETF-Commodities | 0.97% | -0.47% | -42.71% | |
| 27 | GOOG | Alphabet Inc-cl C | Stock-Comm Services | 0.90% | -0.06% | +0.48% | |
| 28 | ✓ | Stock-Other | 0.88% | +0.88% | NEW | ||
| 29 | WSM | Williams-sonoma Inc | Stock-Consumer Disc | 0.87% | -0.03% | +1.18% | |
| 30 | TSM | Taiwan Semiconductor-sp Adr | Stock-Tech | 0.81% | -0.03% | +3.40% | |
| 31 | WELL | Welltower Inc | Stock-Real Estate | 0.77% | -0.01% | -0.22% | |
| 32 | WM | Waste Management Inc | Stock-Industrials | 0.74% | -0.08% | +1.34% | |
| 33 | CAH | Cardinal Health Inc | Stock-Healthcare | 0.74% | -0.06% | +0.94% | |
| 34 | AMGN | Amgen Inc | Stock-Healthcare | 0.73% | +0.09% | -0.05% | |
| 35 | LLY | Eli Lilly & Co | Stock-Healthcare | 0.72% | -0.05% | -0.88% | |
| 36 | BNY | Bank Of New York Mellon CORP | Stock-Financials | 0.71% | -0.01% | +0.78% | |
| 37 | AMZN | Amazon.com Inc | Stock-Consumer Disc | 0.68% | +0.01% | +0.22% | |
| 38 | GLW | Corning Inc | Stock-Tech | 0.66% | -0.61% | -11.62% | |
| 39 | PH | Parker Hannifin CORP | Stock-Industrials | 0.66% | -0.02% | +1.40% | |
| 40 | JPM | Jpmorgan Chase & Co | Stock-Financials | 0.64% | -0.01% | -0.25% | |
| 41 | VLO | Valero Energy CORP | Stock-Energy | 0.63% | +0.19% | -1.10% | |
| 42 | CAT | Caterpillar Inc | Stock-Industrials | 0.61% | -0.18% | +3.81% | |
| 43 | SPHY | Ss Spdr P High Yield ETF | ETF-High Yield | 0.60% | -0.01% | +5.13% | |
| 44 | EMB | Ishares Jp Morgan Usd Emergi | ETF-Other | 0.58% | -0.03% | +4.14% | |
| 45 | SJNK | Ss Spdr Bb St Hi Yield ETF | ETF-Other | 0.58% | — | +5.89% | |
| 46 | IGIB | Ishares 5-10y Inv Grade CORP | ETF-Corp Bonds | 0.57% | -0.01% | +5.62% | |
| 47 | IDNA | Ishares Gen-immunology Hlth | ETF-Other | 0.54% | +0.54% | NEW | |
| 48 | GRMN | Garmin Ltd. | Stock-Tech | 0.54% | +0.08% | -0.28% | |
| 49 | UNM | Unum Group | Stock-Financials | 0.54% | -0.02% | +0.44% | |
| 50 | AU | AngloGold Ashanti plc | Stock-Materials | 0.53% | — | -11.89% |
1–50 of 200
Portfolio Performance
Performance for Q4 2026
+1.6%
Performance Last 4 Quarters
+9.4%
- Stdev
- +10.5%
- Beta
- +0.83
- Alpha
- -1.8%
- Max Drawdown
- -6.3%
- Annualized Perf
- +18%
- Batting Avg vs S&P
- +30.6%
- Sortino
- +3.18
- Stutzer
- +0.47
- Treynor
- +0.21
- Sterling
- +1.18
- Calmar
- +2.83
- Information Ratio
- -1.59
- Tracking Error
- +3.6%
- Stdev Down
- +5.4%
- Winning Months %
- +72.2%
- Losing Months %
- +27.8%
- Best 12 Months
- +28.7%
- Worst 12 Months
- +4.3%
- Efficiency Ratio
- +0.66
- Sharpe
- +1.63
- Stdev Sectors
- +8.2%
- Skewness
- -0.27
- Kurtosis
- +0.13
- Upside Potential
- +4.59
Reported value over time
Sector allocation
Sector allocation over time
Quarterly history
| Period | Holdings | Total value | Stability | Top holdings | |
|---|---|---|---|---|---|
| 2026 Q3 | 238 | $595.5M | 21 | ||
| 2026 Q2 | 238 | $581.8M | 0 | ||
| 2026 Q1 | 228 | $519.5M | 37 | ||
| 2025 Q4 | 227 | $519.7M | 15 | ||
| 2025 Q3 | 225 | $515.6M | 48 | ||
| 2025 Q2 | 225 | $473.5M | 0 | ||
| 2025 Q1 | 179 | $365.8M | 100 | ||
| 2024 Q4 | 185 | $386.6M | 0 | ||
| 2024 Q3 | 195 | $393.6M | 0 | ||
| 2024 Q2 | 211 | $425.5M | 0 | ||
| 2024 Q1 | 220 | $435.5M | 0 | ||
| 2023 Q4 | 230 | $405.8M | 0 | ||
| 2023 Q3 | 220 | $369.4M | 0 | ||
| 2023 Q2 | 219 | $378.8M | 0 | ||
| 2023 Q1 | 214 | $345.3M | 0 | ||
| 2022 Q4 | 211 | $324.9M | 0 | ||
| 2022 Q3 | 197 | $292.6M | 0 | ||
| 2022 Q2 | 200 | $300.8M | 0 | ||
| 2022 Q1 | 214 | $359.3M | 0 | ||
| 2021 Q4 | 213 | $388.4M | 0 | ||
| 2021 Q3 | 205 | $364.8M | 0 | ||
| 2021 Q2 | 196 | $353.6M | 100 | ||
| 2021 Q1 | 195 | $325.0M | 31 | ||
| 2020 Q4 | 178 | $313.7M | 33 | ||
| 2020 Q3 | 158 | $272.5M | 23 | ||
| 2020 Q2 | 147 | $241.6M | 28 | ||
| 2020 Q1 | 126 | $194.3M | 46 | ||
| 2019 Q4 | 692 | $263.0M | — |
Holding changes this quarter
Great Diamond Partners, LLC's most significant position changes for 2026-09-30: New buy: ; Sold out: Tapestry Inc (TPR); New buy: Ishares Gen-immunology Hlth (IDNA); Sold out: First Trust Rba American Ind (AIRR); New buy: First Trust Cloud Computing (SKYY).
Showing top 200 changes by size (of 261 total)
| # | Ticker | Issuer | Weight Change | Shares Change | Action |
|---|---|---|---|---|---|
| 1 | ✓ | +0.9% | NEW | New buy | |
| 2 | MSFT | Microsoft CORP | +0.6% | -1.18% | Trim |
| 3 | IDNA | Ishares Gen-immunology Hlth | +0.5% | NEW | New buy |
| 4 | SKYY | First Trust Cloud Computing | +0.5% | NEW | New buy |
| 5 | RSP | Invesco S&p 500 Equal Weight | +0.5% | +46.79% | Add |
| 6 | JMTG | Mortgage-backed Securities | +0.5% | NEW | New buy |
| 7 | MPC | Marathon Petroleum CORP | +0.5% | NEW | New buy |
| 8 | GDX | Vaneck Gold Miners ETF | +0.4% | NEW | New buy |
| 9 | XPH | Ss Spdr S&p Pharma ETF | +0.4% | NEW | New buy |
| 10 | NUE | Nucor CORP | +0.4% | NEW | New buy |
| 11 | IBDU | Ishares Ibonds Dec 2029 Term | +0.4% | +45.00% | Add |
| 12 | IBDS | Ishrs Ibnds Dec 27 CORP ETF | +0.4% | +30.05% | Add |
| 13 | IBDT | Ishares Ibonds Dec 2028 ETF | +0.3% | +52.65% | Add |
| 14 | HPE | Hewlett Packard Enterprise | +0.3% | NEW | New buy |
| 15 | EBAY | Ebay Inc | +0.2% | +124.91% | Add |
| 16 | DYNF | Ishrs US E F R A Etf-usd Inc | +0.2% | +14.77% | Add |
| 17 | VLO | Valero Energy CORP | +0.2% | -1.10% | Trim |
| 18 | IBDV | Ishares Ibonds Dec 2030 CORP | +0.2% | +100.60% | Add |
| 19 | NTAP | Netapp Inc | +0.2% | NEW | New buy |
| 20 | AAPL | Apple Inc | +0.2% | +0.63% | Add |
| 21 | STT | State Street CORP | +0.2% | NEW | New buy |
| 22 | CSCO | Cisco Systems Inc | +0.1% | +53.68% | Add |
| 23 | NVDA | Nvidia CORP | +0.1% | -1.79% | Trim |
| 24 | IBDW | Ishares Ibonds Dec 2031 CORP | +0.1% | +94.68% | Add |
| 25 | IBMP | Ishares Ibonds Dec 2027 Term | +0.1% | NEW | New buy |
| 26 | IBDX | Ishares Ibonds Dec 2032 Tc | +0.1% | +108.69% | Add |
| 27 | IBMQ | Ishares Ibonds Dec 2028 Muni | +0.1% | NEW | New buy |
| 28 | IBMR | Ishares Ibonds Dec 2029 M Bd | +0.1% | NEW | New buy |
| 29 | AMGN | Amgen Inc | +0.1% | -0.05% | Trim |
| 30 | RLY | Ss Multi-asset Real Ret ETF | +0.1% | NEW | New buy |
| 31 | ACN | Accenture plc | +0.1% | +40.10% | Add |
| 32 | GRMN | Garmin Ltd. | +0.1% | -0.28% | Trim |
| 33 | WTMF | Wisdomtree Mgd Futures Strat | +0.1% | NEW | New buy |
| 34 | SPY | Ss Spdr S&p 500 ETF Trust-us | +0.1% | +22.31% | Add |
| 35 | META | Meta Platforms Inc-class A | +0.1% | -0.25% | Trim |
| 36 | IBDY | Ishares Ibonds Dec 2033 CORP | +0.1% | +186.97% | Add |
| 37 | SHEL | Shell Plc-adr | +0.1% | +5.42% | Add |
| 38 | FAN | First Trust Global Wind Ener | +0.1% | NEW | New buy |
| 39 | ADP | Automatic Data Processing | +0.1% | -0.66% | Trim |
| 40 | IBTJ | Ishares Ibonds Dec 2029 Term | +0.1% | +45.12% | Add |
| 41 | CVX | Chevron CORP | +0.1% | +0.89% | Add |
| 42 | CRBN | Ish Low Car Opt Ms Ac Etf-us | +0.1% | NEW | New buy |
| 43 | IBMS | Isharesibonddec2030munibdetf | +0.1% | NEW | New buy |
| 44 | COP | Conocophillips | 0% | -3.11% | Trim |
| 45 | ABT | Abbott Laboratories | 0% | +3.86% | Add |
| 46 | CB | Chubb Limited | 0% | NEW | New buy |
| 47 | IBMT | Ishares Ibonds Dec 2031 Muni | 0% | NEW | New buy |
| 48 | EXPD | Expeditors Intl Wash Inc | 0% | NEW | New buy |
| 49 | IBTH | Ishares Ibonds Dec 2027 Term | 0% | +17.29% | Add |
| 50 | BLK | Blackrock Inc | 0% | -1.81% | Trim |
1–50 of 200
💡
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.
Filing History
FAQ
What is Great Diamond Partners, LLC and what type of investor is it?
Great Diamond Partners, LLC 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 $595.5M, spread across 238 disclosed positions.
What are Great Diamond Partners, LLC's largest equity positions?
Based on the latest 13F filing, Great Diamond Partners, LLC's top holdings by market value are:
1. Vanguard Total Stock Mkt ETF (VTI) — $33.0M (5.5%)
2. Ishares Russell 3000 ETF (IWV) — $30.9M (5.2%)
3. Ishares Core Msci Eafe ETF (IEFA) — $27.8M (4.7%)
4. Vanguard Extended Market ETF (VXF) — $14.2M (2.4%)
5. Microsoft CORP (MSFT) — $14.0M (2.4%)
What changes did Great Diamond Partners, LLC make in its most recent portfolio filing?
In the latest reported quarter, Great Diamond Partners, LLC made 198 notable position adjustments: 23 new positions were initiated, 83 existing holdings were added to, 69 positions were partially reduced, and 23 were completely exited. The largest of these moves: New buy: ; Sold out: Tapestry Inc (TPR); New buy: Ishares Gen-immunology Hlth (IDNA); Sold out: First Trust Rba American Ind (AIRR); New buy: First Trust Cloud Computing (SKYY)
What sectors does Great Diamond Partners, LLC focus on?
Great Diamond Partners, LLC is concentrated in the following sectors based on its current disclosed equity portfolio:
• Information Technology: 32.4%
• Health Care: 13.3%
• Financials: 11.9%
• Industrials: 10.1%
• Consumer Discretionary: 7.6%
• Consumer Staples: 6.3%
Investment Profile
Great Diamond Partners, LLC returned an annualized 18.0% over the trailing 36 months — underperforming the S&P 500 by 1.8 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 moderately active, with 32.4% of the portfolio concentrated in Information Technology.
Its turnover score has fallen from 48 to 21 over the past 4 quarters — a shift toward longer holding periods.
It has added to its IBDU position over the past two quarters (+$6.2M, now $7.8M), while trimming IBDR over the same stretch (-$3.4M, still holding $934.5K).
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Developer Access
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