Summa Corp. reported 41 positions worth $253.84M for the quarter ended Jun 30, 2026, up 33.0% on the prior quarter. It opened 3 new positions, added to 8, trimmed 16 and exited 6. Its largest holding is Nvidia Corp at 46.5% 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. | +8,000 | +19.0% | $2.38M | 5.87% |
| MU Micron Technology Inc | +265 | – | $305.89K | 0.121% |
| ASML Asml Holding Nv | +133 | – | $264.60K | 0.104% |
| AMZN Amazon Com Inc | +1,007 | +4.7% | $240.01K | 2.1% |
| IRM Iron Mountain Inc | +1,800 | – | $227.36K | 0.09% |
| T At&T Inc. | +10.0K | +166.7% | $207.00K | 0.13% |
| QCOM Qualcomm Inc | +1,000 | +2.9% | $184.79K | 2.55% |
| BRK-B Berkshire Hathaway Inc | +299 | +5.9% | $149.62K | 1.06% |
| TMO Thermo Fisher Scientific Inc. | +253 | +25.3% | $126.84K | 0.247% |
| MSFT Microsoft Corp | +227 | +1.0% | $84.68K | 3.37% |
| Holding | Change | Change % | Trade Value | Weight |
|---|---|---|---|---|
| NVDA Nvidia Corp | -44.9K | -7.1% | $8.99M | 46.52% |
| AMD Advanced Micro Devices Inc | -6,945 | -5.7% | $4.03M | 26.44% |
| OPRT Oportun Financial Corp | -103.5K | -26.1% | $590.99K | 0.66% |
| ORCL Oracle Corp | -3,082 | -100.0% | $453.39K | Exited |
| LLY ELI LILLY & Co | -372 | -100.0% | $342.15K | Exited |
| MA Mastercard Inc | -610 | -35.4% | $313.30K | 0.226% |
| HON Honeywell International Inc | -550 | -100.0% | $248.63K | Exited |
| SHOP Shopify Inc. | -2,051 | -100.0% | $243.29K | Exited |
| ZTS Zoetis Inc. | -1,739 | -100.0% | $205.57K | Exited |
| MSCI MSCI Inc. | -372 | -100.0% | $200.51K | Exited |
| # | Activity | ||||||||
|---|---|---|---|---|---|---|---|---|---|
| 1 | NVDA Nvidia Corp | Technology | 590.2K | $118.09M | 46.52% | -44.9K | -7.1% | Reduced | 0% |
| 2 | AMD Advanced Micro Devices Inc | Technology | 115.5K | $67.11M | 26.44% | -6,945 | -5.7% | Reduced | 0.01% |
| 3 | MRVL Marvell Technology, Inc. | Technology | 50.0K | $14.89M | 5.87% | +8,000 | +19.0% | Added | 0.01% |
| 4 | MSFT Microsoft Corp | Technology | 22.9K | $8.56M | 3.37% | +227 | +1.0% | Added | 0% |
| 5 | QCOM Qualcomm Inc | Technology | 35.0K | $6.47M | 2.55% | +1,000 | +2.9% | Added | 0% |
| 6 | AMZN Amazon Com Inc | Consumer Discretionary | 22.3K | $5.32M | 2.1% | +1,007 | +4.7% | Added | 0% |
| 7 | GOOGL Alphabet Inc. | Technology | 9,928 | $3.55M | 1.4% | -360 | -3.5% | Reduced | 0% |
| 8 | AAPL Apple Inc. | Technology | 12.1K | $3.49M | 1.37% | -482 | -3.8% | Reduced | 0% |
| 9 | BRK-B Berkshire Hathaway Inc | Financial Services | 5,367 | $2.69M | 1.06% | +299 | +5.9% | Added | 0% |
| 10 | UBER Uber Technologies, Inc | Technology | 25.9K | $1.87M | 0.737% | -212 | -0.8% | Reduced | 0% |
| 11 | OPRT Oportun Financial Corp | Financial Services | 293.3K | $1.67M | 0.66% | -103.5K | -26.1% | Reduced | 0.61% |
| 12 | GOOG Alphabet Inc. | Technology | 4,706 | $1.66M | 0.655% | -143 | -2.9% | Reduced | 0% |
| 13 | WMT Walmart Inc. | Consumer Staples | 14.5K | $1.65M | 0.649% | -76 | -0.5% | Reduced | 0% |
| 14 | TSM Taiwan Semiconductor Manufacturing Co Ltd | Technology | 3,400 | $1.62M | 0.64% | -200 | -5.6% | Reduced | 0% |
| 15 | VLO Valero Energy Corp | Energy | 5,400 | $1.41M | 0.554% | 0 | 0.0% | Unchanged | 0% |
Tip. Select a row to see that position’s full history at Summa.
As of its Q2 2026 13F filing, Summa Corp.’s five largest positions were Nvidia Corp (NVDA) at 46.5%, Advanced Micro Devices Inc (AMD) at 26.4%, Marvell Technology, Inc. (MRVL) at 5.9%, Microsoft Corp (MSFT) at 3.4%, Qualcomm Inc (QCOM) at 2.5% of the reported portfolio.
Summa Corp. reported a 13F portfolio worth $253.84M across 41 positions for Q2 2026. That is up 33.0% from the previous quarter.
Its largest purchases by value were Marvell Technology, Inc. ($2.38M), Micron Technology Inc ($305.89K), Asml Holding Nv ($264.60K). It opened 3 new positions.
Its largest sales by value were Nvidia Corp ($8.99M), Advanced Micro Devices Inc ($4.03M), Oportun Financial Corp ($590.99K). It exited 6 positions entirely.
From the Form 13F-HR reports Summa Corp. 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.