Quantum Portfolio Management LLC reported 412 positions worth $194.75M for the quarter ended Jun 30, 2026, up 24.3% on the prior quarter. It opened 225 new positions, added to 70, trimmed 109 and exited 16. Its largest holding is Apple Inc. at 7.5% 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 |
|---|---|---|---|---|
| HPE Hewlett Packard Enterprise Co | +42.1K | – | $1.90M | 0.974% |
| ROKU Roku, Inc | +13.2K | +318.2% | $1.82M | 1.23% |
| CHRD Chord Energy Corp | +13.4K | +206.1% | $1.53M | 1.17% |
| OLED Universal Display Corp Pa | +9,662 | – | $836.63K | 0.43% |
| KR Kroger Co | +12.8K | – | $710.67K | 0.365% |
| R Ryder System Inc | +1,851 | +72.2% | $488.24K | 0.598% |
| VLO Valero Energy Corp | +1,724 | – | $449.00K | 0.231% |
| AMAT Applied Materials Inc | +565 | – | $408.50K | 0.21% |
| NGG National Grid Plc | +4,921 | – | $407.80K | 0.209% |
| MKSI Mks Inc | +901 | +64.6% | $400.76K | 0.524% |
| Holding | Change | Change % | Trade Value | Weight |
|---|---|---|---|---|
| BXSL Blackstone Secured Lending Fund | -1.60M | -99.9% | $37.95M | 0.02% |
| AGX Argan Inc | -1,710 | -22.9% | $1.37M | 2.36% |
| APPF Appfolio Inc | -7,018 | -100.0% | $1.11M | Exited |
| MU Micron Technology Inc | -895 | -17.3% | $1.03M | 2.54% |
| AMCR Amcor plc | -19.9K | -54.0% | $862.84K | 0.378% |
| M Macy's, Inc. | -24.4K | -100.0% | $441.11K | Exited |
| VMI Valmont Industries Inc | -1,049 | -100.0% | $419.15K | Exited |
| MLI Mueller Industries Inc | -6,992 | -100.0% | $387.36K | Exited |
| AAL American Airlines Group Inc. | -35.0K | -100.0% | $375.69K | Exited |
| CDNS Cadence Design Systems Inc | -1,332 | -100.0% | $370.12K | Exited |
| Holding | Shares | Trade Value | Weight |
|---|---|---|---|
| HPE Hewlett Packard Enterprise Co | +42.1K | $1.90M | 0.974% |
| OLED Universal Display Corp Pa | +9,662 | $836.63K | 0.43% |
| KR Kroger Co | +12.8K | $710.67K | 0.365% |
| VLO Valero Energy Corp | +1,724 | $449.00K | 0.231% |
| AMAT Applied Materials Inc | +565 | $408.50K | 0.21% |
| NGG National Grid Plc | +4,921 | $407.80K | 0.209% |
| ALSN Allison Transmission Holdings Inc | +3,546 | $399.78K | 0.205% |
| ALB Albemarle Corp | +2,750 | $371.33K | 0.191% |
| UNP Union Pacific Corp | +1,325 | $360.40K | 0.185% |
| CAT Caterpillar Inc | +282 | $300.30K | 0.154% |
| Holding | Shares Sold | Trade Value | Prior Weight |
|---|---|---|---|
| APPF Appfolio Inc | -7,018 | $1.11M | 0.707% |
| M Macy's, Inc. | -24.4K | $441.11K | 0.281% |
| VMI Valmont Industries Inc | -1,049 | $419.15K | 0.267% |
| MLI Mueller Industries Inc | -6,992 | $387.36K | 0.247% |
| AAL American Airlines Group Inc. | -35.0K | $375.69K | 0.24% |
| CDNS Cadence Design Systems Inc | -1,332 | $370.12K | 0.236% |
| HOOD Robinhood Markets, Inc. | -5,273 | $365.42K | 0.233% |
| SAP Sap Se | -2,026 | $346.87K | 0.221% |
| LOPE Grand Canyon Education, Inc. | -2,037 | $346.35K | 0.221% |
| ORLY O Reilly Automotive Inc | -3,436 | $317.18K | 0.202% |
| # | Activity | ||||||||
|---|---|---|---|---|---|---|---|---|---|
| 1 | AAPL Apple Inc. | Technology | 50.4K | $14.58M | 7.49% | -42 | -0.1% | Reduced | 0% |
| 2 | NVDA Nvidia Corp | Technology | 48.2K | $9.64M | 4.95% | -189 | -0.4% | Reduced | 0% |
| 3 | GOOG Alphabet Inc. | Technology | 14.3K | $5.05M | 2.59% | -20 | -0.1% | Reduced | 0% |
| 4 | MU Micron Technology Inc | Technology | 4,284 | $4.94M | 2.54% | -895 | -17.3% | Reduced | 0% |
| 5 | AGX Argan Inc | Industrials | 5,756 | $4.60M | 2.36% | -1,710 | -22.9% | Reduced | 0.04% |
| 6 | GOOGL Alphabet Inc. | Technology | 10.9K | $3.89M | 2% | +106 | +1.0% | Added | 0% |
| 7 | LRCX Lam Research Corp | Technology | 8,926 | $3.87M | 1.99% | +60 | +0.7% | Added | 0% |
| 8 | MSFT Microsoft Corp | Technology | 9,590 | $3.58M | 1.84% | -573 | -5.6% | Reduced | 0% |
| 9 | AMZN Amazon Com Inc | Consumer Discretionary | 14.5K | $3.45M | 1.77% | +173 | +1.2% | Added | 0% |
| 10 | AVGO Broadcom Inc. | Technology | 7,919 | $2.99M | 1.54% | -352 | -4.3% | Reduced | 0% |
| 11 | ROKU Roku, Inc | Technology | 17.3K | $2.39M | 1.23% | +13.2K | +318.2% | Added | 0.01% |
| 12 | CHRD Chord Energy Corp | Energy | 19.9K | $2.27M | 1.17% | +13.4K | +206.1% | Added | 0.04% |
| 13 | TSM Taiwan Semiconductor Manufacturing Co Ltd | Technology | 4,733 | $2.26M | 1.16% | -304 | -6.0% | Reduced | 0% |
| 14 | META Meta Platforms, Inc. | Technology | 3,849 | $2.17M | 1.11% | -262 | -6.4% | Reduced | 0% |
| 15 | HPE Hewlett Packard Enterprise Co | Technology | 42.1K | $1.90M | 0.974% | +42.1K | – | New | 0% |
Tip. Select a row to see that position’s full history at Quantum Portfolio Management.
As of its Q2 2026 13F filing, Quantum Portfolio Management LLC’s five largest positions were Apple Inc. (AAPL) at 7.5%, Nvidia Corp (NVDA) at 5.0%, Alphabet Inc. (GOOG) at 2.6%, Micron Technology Inc (MU) at 2.5%, Argan Inc (AGX) at 2.4% of the reported portfolio.
Quantum Portfolio Management LLC reported a 13F portfolio worth $194.75M across 412 positions for Q2 2026. That is up 24.3% from the previous quarter.
Its largest purchases by value were Hewlett Packard Enterprise Co ($1.90M), Roku, Inc ($1.82M), Chord Energy Corp ($1.53M). It opened 225 new positions.
Its largest sales by value were Blackstone Secured Lending Fund ($37.95M), Argan Inc ($1.37M), Appfolio Inc ($1.11M). It exited 16 positions entirely.
From the Form 13F-HR reports Quantum Portfolio Management 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.