Great Diamond Partners, LLC reported 148 positions worth $262.25M for the quarter ended Sep 30, 2026, down 0.1% on the prior quarter. It opened 9 new positions, added to 52, trimmed 80 and exited 14. Its largest holding is Microsoft Corp at 5.3% of the portfolio.
Reported 13F market value at each quarter end. A change mixes trading with price moves in the positions held.
Dollar value of shares bought and sold each quarter, at that quarter’s price. It counts trading only, not price changes.
How many positions were opened, added to, trimmed or closed each quarter.
Share of reported value in each sector at every quarter end.
| Holding | Change | Change % | Trade Value | Weight |
|---|---|---|---|---|
| XOM ExxonMobil Holdings Corp | +32.1K | – | $5.22M | 1.99% |
| MPC Marathon Petroleum Corp | +6,718 | – | $2.66M | 1.01% |
| NUE Nucor Corp | +10.4K | – | $2.43M | 0.928% |
| HPE Hewlett Packard Enterprise Co | +22.9K | – | $1.46M | 0.557% |
| EBAY Ebay Inc | +13.3K | +124.9% | $1.41M | 0.968% |
| NTAP NetApp, Inc. | +5,250 | – | $1.10M | 0.421% |
| STT State Street Corp | +5,297 | – | $924.80K | 0.353% |
| CSCO Cisco Systems, Inc. | +8,364 | +53.7% | $900.22K | 0.983% |
| ACN Accenture plc | +1,543 | +40.1% | $282.94K | 0.377% |
| CB Chubb Ltd | +775 | – | $252.07K | 0.096% |
| Holding | Change | Change % | Trade Value | Weight |
|---|---|---|---|---|
| TPR Tapestry, Inc. | -23.3K | -100.0% | $3.41M | Exited |
| CHRW C. H. Robinson Worldwide, Inc. | -15.8K | -100.0% | $2.97M | Exited |
| B Barrick Mining Corp | -58.0K | -100.0% | $2.13M | Exited |
| NEM NEWMONT Corp | -15.0K | -100.0% | $1.40M | Exited |
| LVS Las Vegas Sands Corp | -20.0K | -100.0% | $924.49K | Exited |
| GLW Corning Inc | -3,371 | -11.6% | $518.33K | 1.5% |
| INTU Intuit Inc. | -1,650 | -100.0% | $430.65K | Exited |
| AU AngloGold Ashanti PLC | -4,556 | -11.9% | $428.04K | 1.21% |
| EQT EQT Corp | -7,092 | -100.0% | $377.08K | Exited |
| YUM Yum Brands Inc | -1,388 | -100.0% | $221.89K | Exited |
| Holding | Shares | Trade Value | Weight |
|---|---|---|---|
| XOM ExxonMobil Holdings Corp | +32.1K | $5.22M | 1.99% |
| MPC Marathon Petroleum Corp | +6,718 | $2.66M | 1.01% |
| NUE Nucor Corp | +10.4K | $2.43M | 0.928% |
| HPE Hewlett Packard Enterprise Co | +22.9K | $1.46M | 0.557% |
| NTAP NetApp, Inc. | +5,250 | $1.10M | 0.421% |
| STT State Street Corp | +5,297 | $924.80K | 0.353% |
| CB Chubb Ltd | +775 | $252.07K | 0.096% |
| EXPD Expeditors International Of Washington Inc | +1,210 | $223.41K | 0.085% |
| NOW ServiceNow, Inc. | +1,500 | $201.02K | 0.077% |
| Holding | Shares Sold | Trade Value | Prior Weight |
|---|---|---|---|
| TPR Tapestry, Inc. | -23.3K | $3.41M | 1.3% |
| CHRW C. H. Robinson Worldwide, Inc. | -15.8K | $2.97M | 1.13% |
| B Barrick Mining Corp | -58.0K | $2.13M | 0.812% |
| NEM NEWMONT Corp | -15.0K | $1.40M | 0.534% |
| LVS Las Vegas Sands Corp | -20.0K | $924.49K | 0.352% |
| INTU Intuit Inc. | -1,650 | $430.65K | 0.164% |
| EQT EQT Corp | -7,092 | $377.08K | 0.144% |
| YUM Yum Brands Inc | -1,388 | $221.89K | 0.085% |
| DD DuPont de Nemours, Inc. | -1,620 | $219.74K | 0.084% |
| MUSA Murphy USA Inc. | -396 | $213.39K | 0.081% |
| # | Activity | ||||||||
|---|---|---|---|---|---|---|---|---|---|
| 1 | MSFT Microsoft Corp | Technology | 27.3K | $13.99M | 5.33% | -326 | -1.2% | Reduced | 0% |
| 2 | PG PROCTER & GAMBLE Co | Consumer Staples | 78.5K | $11.41M | 4.35% | -283 | -0.4% | Reduced | 0% |
| 3 | AAPL Apple Inc. | Technology | 27.8K | $9.27M | 3.53% | +174 | +0.6% | Added | 0% |
| 4 | NVDA Nvidia Corp | Technology | 35.0K | $8.00M | 3.05% | -638 | -1.8% | Reduced | 0% |
| 5 | IDXX Idexx Laboratories Inc | Healthcare | 14.4K | $7.53M | 2.87% | +111 | +0.8% | Added | 0.02% |
| 6 | AVGO Broadcom Inc. | Technology | 18.9K | $6.64M | 2.53% | -46 | -0.2% | Reduced | 0% |
| 7 | GOOGL Alphabet Inc. | Technology | 17.8K | $6.13M | 2.34% | -397 | -2.2% | Reduced | 0% |
| 8 | KLAC Kla Corp | Technology | 30.6K | $5.96M | 2.27% | +646 | +2.2% | Added | 0% |
| 9 | GOOG Alphabet Inc. | Technology | 15.8K | $5.38M | 2.05% | +75 | +0.5% | Added | 0% |
| 10 | XOM ExxonMobil Holdings Corp | Energy | 32.1K | $5.22M | 1.99% | +32.1K | – | New | 0% |
| 11 | WSM Williams Sonoma Inc | Consumer Discretionary | 22.8K | $5.20M | 1.98% | +267 | +1.2% | Added | 0.02% |
| 12 | TSM Taiwan Semiconductor Manufacturing Co Ltd | Technology | 10.6K | $4.85M | 1.85% | +349 | +3.4% | Added | 0% |
| 13 | WELL Welltower Inc. | Real Estate | 19.9K | $4.57M | 1.74% | -43 | -0.2% | Reduced | 0% |
| 14 | WM Waste Management Inc | Industrials | 21.7K | $4.43M | 1.69% | +288 | +1.3% | Added | 0.01% |
| 15 | CAH Cardinal Health Inc | Healthcare | 19.8K | $4.40M | 1.68% | +185 | +0.9% | Added | 0.01% |
Tip. Select a row to see that position’s full history at Great Diamond Partners.
As of its Q3 2026 13F filing, Great Diamond Partners, LLC’s five largest positions were Microsoft Corp (MSFT) at 5.3%, PROCTER & GAMBLE Co (PG) at 4.4%, Apple Inc. (AAPL) at 3.5%, Nvidia Corp (NVDA) at 3.1%, Idexx Laboratories Inc (IDXX) at 2.9% of the reported portfolio.
Great Diamond Partners, LLC reported a 13F portfolio worth $262.25M across 148 positions for Q3 2026. That is down 0.1% from the previous quarter.
Its largest purchases by value were ExxonMobil Holdings Corp ($5.22M), Marathon Petroleum Corp ($2.66M), Nucor Corp ($2.43M). It opened 9 new positions.
Its largest sales by value were Tapestry, Inc. ($3.41M), C. H. Robinson Worldwide, Inc. ($2.97M), Barrick Mining Corp ($2.13M). It exited 14 positions entirely.
From the Form 13F-HR reports Great Diamond Partners, LLC files with the SEC each quarter, within 45 days of quarter end. A 13F lists long positions in US-listed equities and options; it excludes short positions, cash, bonds and most non-US holdings.
13F data reflects long positions in US-listed equities and options as reported to the SEC up to 45 days after quarter end. It excludes short positions, cash, bonds and most non-US securities, so it is not a complete picture of a manager’s assets.