S.A. Mason LLC reported 188 positions worth $193.28M for the quarter ended Sep 30, 2026, up 6.1% on the prior quarter. It opened 8 new positions, added to 76, trimmed 36 and exited 7. Its largest holding is Nvidia Corp at 9.7% 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 |
|---|---|---|---|---|
| MRVL Marvell Technology, Inc. | +3,252 | +435.9% | $859.21K | 0.547% |
| CSCO Cisco Systems, Inc. | +6,250 | +53.8% | $672.69K | 0.995% |
| DELL Dell Technologies Inc. | +1,170 | +69.4% | $629.40K | 0.795% |
| BBY Best Buy Co Inc | +6,295 | – | $555.47K | 0.287% |
| SHOP Shopify Inc. | +3,574 | – | $530.02K | 0.274% |
| VRTX Vertex Pharmaceuticals Inc / Ma | +1,002 | – | $523.86K | 0.271% |
| NVDA Nvidia Corp | +1,563 | +1.9% | $356.96K | 9.69% |
| EW Edwards Lifesciences Corp | +3,300 | +66.5% | $284.86K | 0.369% |
| GOOG Alphabet Inc. | +761 | +10.9% | $259.30K | 1.36% |
| KMI Kinder Morgan, Inc. | +8,523 | +57.6% | $256.97K | 0.364% |
| Holding | Change | Change % | Trade Value | Weight |
|---|---|---|---|---|
| UNH Unitedhealth Group Inc | -2,372 | -100.0% | $985.87K | Exited |
| HNI Hni Corp | -13.5K | -17.8% | $611.46K | 1.47% |
| RKLB Rocket Lab Corp | -2,001 | -100.0% | $203.40K | Exited |
| PRGO PERRIGO Co plc | -15.0K | -100.0% | $155.85K | Exited |
| CCL Carnival Corp Ltd. | -4,000 | -100.0% | $114.28K | Exited |
| VKTX Viking Therapeutics, Inc. | -2,900 | -100.0% | $113.13K | Exited |
| PANW Palo Alto Networks Inc | -274 | -2.5% | $108.86K | 2.24% |
| AMAT Applied Materials Inc | -200 | -19.3% | $102.28K | 0.221% |
| HELE Helen Of Troy Ltd | -3,500 | -100.0% | $101.75K | Exited |
| TROW Price T Rowe Group Inc | -885 | -100.0% | $100.62K | Exited |
| Holding | Shares | Trade Value | Weight |
|---|---|---|---|
| BBY Best Buy Co Inc | +6,295 | $555.47K | 0.287% |
| SHOP Shopify Inc. | +3,574 | $530.02K | 0.274% |
| VRTX Vertex Pharmaceuticals Inc / Ma | +1,002 | $523.86K | 0.271% |
| GRAL GRAIL, Inc. | +1,199 | $168.00K | 0.087% |
| TXN Texas Instruments Inc | +450 | $126.04K | 0.065% |
| MDT Medtronic plc | +1,368 | $118.05K | 0.061% |
| CNH CNH Industrial N.V. | +8,750 | $112.44K | 0.058% |
| BR Broadridge Financial Solutions, Inc. | +650 | $104.72K | 0.054% |
| Holding | Shares Sold | Trade Value | Prior Weight |
|---|---|---|---|
| UNH Unitedhealth Group Inc | -2,372 | $985.87K | 0.541% |
| RKLB Rocket Lab Corp | -2,001 | $203.40K | 0.112% |
| PRGO PERRIGO Co plc | -15.0K | $155.85K | 0.086% |
| CCL Carnival Corp Ltd. | -4,000 | $114.28K | 0.063% |
| VKTX Viking Therapeutics, Inc. | -2,900 | $113.13K | 0.062% |
| HELE Helen Of Troy Ltd | -3,500 | $101.75K | 0.056% |
| TROW Price T Rowe Group Inc | -885 | $100.62K | 0.055% |
| # | Activity | ||||||||
|---|---|---|---|---|---|---|---|---|---|
| 1 | NVDA Nvidia Corp | Technology | 82.0K | $18.73M | 9.69% | +1,563 | +1.9% | Added | 0% |
| 2 | MSFT Microsoft Corp | Technology | 16.9K | $8.69M | 4.49% | +38 | +0.2% | Added | 0% |
| 3 | AAPL Apple Inc. | Technology | 23.1K | $7.70M | 3.98% | -249 | -1.1% | Reduced | 0% |
| 4 | COST Costco Wholesale Corp | Consumer Staples | 5,219 | $4.75M | 2.46% | +1 | +0.0% | Added | 0% |
| 5 | MU Micron Technology Inc | Technology | 4,110 | $4.38M | 2.26% | +98 | +2.4% | Added | 0% |
| 6 | PANW Palo Alto Networks Inc | Technology | 10.9K | $4.33M | 2.24% | -274 | -2.5% | Reduced | 0% |
| 7 | PLTR Palantir Technologies Inc. | Technology | 22.4K | $4.18M | 2.16% | 0 | 0.0% | Unchanged | 0% |
| 8 | SNDK Sandisk Corp | Technology | 2,319 | $4.03M | 2.09% | -28 | -1.2% | Reduced | 0% |
| 9 | GOOGL Alphabet Inc. | Technology | 11.1K | $3.83M | 1.98% | +31 | +0.3% | Added | 0% |
| 10 | ABBV AbbVie Inc. | Healthcare | 12.3K | $3.23M | 1.67% | +6 | +0.0% | Added | 0% |
| 11 | V Visa Inc. | Financial Services | 8,702 | $3.13M | 1.62% | +546 | +6.7% | Added | 0% |
| 12 | LLY ELI LILLY & Co | Healthcare | 2,623 | $3.04M | 1.57% | +156 | +6.3% | Added | 0% |
| 13 | CRWD CrowdStrike Holdings, Inc. | Technology | 11.0K | $2.92M | 1.51% | -20 | -0.2% | Reduced | 0% |
| 14 | HNI Hni Corp | Consumer Discretionary | 62.5K | $2.83M | 1.47% | -13.5K | -17.8% | Reduced | 0.09% |
| 15 | MA Mastercard Inc | Financial Services | 5,062 | $2.79M | 1.44% | +115 | +2.3% | Added | 0% |
Tip. Select a row to see that position’s full history at S.A. Mason.
As of its Q3 2026 13F filing, S.A. Mason LLC’s five largest positions were Nvidia Corp (NVDA) at 9.7%, Microsoft Corp (MSFT) at 4.5%, Apple Inc. (AAPL) at 4.0%, Costco Wholesale Corp (COST) at 2.5%, Micron Technology Inc (MU) at 2.3% of the reported portfolio.
S.A. Mason LLC reported a 13F portfolio worth $193.28M across 188 positions for Q3 2026. That is up 6.1% from the previous quarter.
Its largest purchases by value were Marvell Technology, Inc. ($859.21K), Cisco Systems, Inc. ($672.69K), Dell Technologies Inc. ($629.40K). It opened 8 new positions.
Its largest sales by value were Unitedhealth Group Inc ($985.87K), Hni Corp ($611.46K), Rocket Lab Corp ($203.40K). It exited 7 positions entirely.
From the Form 13F-HR reports S.A. Mason 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.