Group One Trading LLC reported 1,685 positions worth $2.88B for the quarter ended Jun 30, 2026, up 14.4% on the prior quarter. It opened 472 new positions, added to 479, trimmed 652 and exited 504. Its largest holding is Taiwan Semiconductor Manufacturing Co Ltd at 3.2% 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 | Trade Value | Weight |
|---|---|---|---|
| UNH Unitedhealth Group Inc | +101.4K +390.6% | $42.14M | 1.84% |
| MRVL Marvell Technology, Inc. | +139.3K +292.2% | $41.49M | 1.93% |
| BKNG Booking Holdings Inc. | +191.7K | $34.17M | 1.19% |
| TSM Taiwan Semiconductor Manufacturing Co Ltd | +55.2K +40.0% | $26.35M | 3.21% |
| FCEL Fuelcell Energy Inc | +645.5K +1,270.3% | $23.25M | 0.871% |
| DASH DoorDash, Inc. | +123.9K | $22.87M | 0.794% |
| NVDA Nvidia Corp | +109.3K | $21.87M | 0.759% |
| VSH Vishay Intertechnology Inc | +405.8K | $21.82M | 0.758% |
| CHTR Charter Communications, Inc. | +146.1K +809.6% | $20.77M | 0.811% |
| PLTR Palantir Technologies Inc. | +158.8K | $18.53M | 0.644% |
| Holding | Change | Trade Value | Weight |
|---|---|---|---|
| MU Micron Technology Inc | -82.8K -53.2% | $95.53M | 2.92% |
| INTC Intel Corp | -364.3K -77.6% | $50.86M | 0.51% |
| CYTK Cytokinetics Inc | -364.0K -100.0% | $23.99M | Exited |
| DAL Delta Air Lines, Inc. | -243.0K -90.8% | $22.76M | 0.08% |
| DAVE Dave Inc. | -51.8K -91.9% | $19.29M | 0.059% |
| CNC Centene Corp | -583.7K -100.0% | $19.11M | Exited |
| FLG Flagstar Bank, National Association | -1.39M -100.0% | $18.32M | Exited |
| SOFI SoFi Technologies, Inc. | -997.0K -79.3% | $17.88M | 0.162% |
| PBR Petrobras - Petroleo Brasileiro Sa | -1.06M -67.3% | $17.20M | 0.29% |
| VST Vistra Corp. | -107.7K -80.4% | $17.09M | 0.145% |
| Holding | Shares | Trade Value | Weight |
|---|---|---|---|
| BKNG Booking Holdings Inc. | +191.7K | $34.17M | 1.19% |
| DASH DoorDash, Inc. | +123.9K | $22.87M | 0.794% |
| NVDA Nvidia Corp | +109.3K | $21.87M | 0.759% |
| VSH Vishay Intertechnology Inc | +405.8K | $21.82M | 0.758% |
| PLTR Palantir Technologies Inc. | +158.8K | $18.53M | 0.644% |
| CIFR Cipher Digital Inc. | +618.3K | $15.15M | 0.526% |
| WDC Western Digital Corp | +23.6K | $15.10M | 0.524% |
| SHOP Shopify Inc. | +112.5K | $12.85M | 0.446% |
| LMT Lockheed Martin Corp | +23.6K | $12.02M | 0.417% |
| NU Nu Holdings Ltd. | +867.8K | $11.59M | 0.403% |
| Holding | Shares Sold | Trade Value | Prior Weight |
|---|---|---|---|
| CYTK Cytokinetics Inc | -364.0K | $23.99M | 0.954% |
| CNC Centene Corp | -583.7K | $19.11M | 0.76% |
| FLG Flagstar Bank, National Association | -1.39M | $18.32M | 0.728% |
| NEE Nextera Energy Inc | -148.3K | $13.78M | 0.548% |
| UAL United Airlines Holdings, Inc. | -119.5K | $11.01M | 0.438% |
| BILI Bilibili Inc. | -457.8K | $10.33M | 0.411% |
| APO Apollo Global Management, Inc. | -88.1K | $9.81M | 0.39% |
| CORN Teucrium Commodity Trust | -462.6K | $8.51M | 0.338% |
| JPM Jpmorgan Chase & Co | -26.7K | $7.86M | 0.313% |
| RDDT Reddit, Inc. | -57.3K | $7.72M | 0.307% |
| # | Activity | ||||||||
|---|---|---|---|---|---|---|---|---|---|
| 1 | TSM Taiwan Semiconductor Manufacturing Co Ltd | Technology | 193.2K | $92.28M | 3.21% | +55.2K | +40.0% | Added | 0% |
| 2 | MU Micron Technology Inc | Technology | 72.9K | $84.18M | 2.92% | -82.8K | -53.2% | Reduced | 0.01% |
| 3 | MRVL Marvell Technology, Inc. | Technology | 187.0K | $55.69M | 1.93% | +139.3K | +292.2% | Added | 0.02% |
| 4 | UNH Unitedhealth Group Inc | Healthcare | 127.4K | $52.93M | 1.84% | +101.4K | +390.6% | Added | 0.01% |
| 5 | KKR KKR & Co. Inc. | Financial Services | 483.0K | $44.33M | 1.54% | +148.1K | +44.2% | Added | 0.05% |
| 6 | BKNG Booking Holdings Inc. | Technology | 191.7K | $34.17M | 1.19% | +191.7K | – | New | 0.02% |
| 7 | OSCR Oscar Health, Inc. | Healthcare | 1.15M | $32.74M | 1.14% | -109.7K | -8.7% | Reduced | 0.37% |
| 8 | CI Cigna Group | Healthcare | 91.4K | $25.19M | 0.875% | +51.8K | +130.7% | Added | 0.03% |
| 9 | FCEL Fuelcell Energy Inc | Industrials | 696.4K | $25.08M | 0.871% | +645.5K | +1,270.3% | Added | 1.1% |
| 10 | MAR Marriott International Inc | Consumer Discretionary | 63.9K | $23.68M | 0.822% | -42.0K | -39.6% | Reduced | 0.02% |
| 11 | CHTR Charter Communications, Inc. | Communication Services | 164.1K | $23.34M | 0.811% | +146.1K | +809.6% | Added | 0.14% |
| 12 | PDD PDD Holdings Inc. | Technology | 302.9K | $23.10M | 0.802% | +218.5K | +258.8% | Added | 0.02% |
| 13 | DASH DoorDash, Inc. | Technology | 123.9K | $22.87M | 0.794% | +123.9K | – | New | 0.03% |
| 14 | AG First Majestic Silver Corp | Basic Materials | 1.31M | $22.27M | 0.773% | -621.9K | -32.1% | Reduced | 0.27% |
| 15 | NVDA Nvidia Corp | Technology | 109.3K | $21.87M | 0.759% | +109.3K | – | New | 0% |
Tip. Select a row to see that position’s full history at Group One Trading.
As of its Q2 2026 13F filing, Group One Trading LLC’s five largest positions were Taiwan Semiconductor Manufacturing Co Ltd (TSM) at 3.2%, Micron Technology Inc (MU) at 2.9%, Marvell Technology, Inc. (MRVL) at 1.9%, Unitedhealth Group Inc (UNH) at 1.8%, KKR & Co. Inc. (KKR) at 1.5% of the reported portfolio.
Group One Trading LLC reported a 13F portfolio worth $2.88B across 1,685 positions for Q2 2026. That is up 14.4% from the previous quarter.
Its largest purchases by value were Unitedhealth Group Inc ($42.14M), Marvell Technology, Inc. ($41.49M), Booking Holdings Inc. ($34.17M). It opened 472 new positions.
Its largest sales by value were Micron Technology Inc ($95.53M), Intel Corp ($50.86M), Cytokinetics Inc ($23.99M). It exited 504 positions entirely.
From the Form 13F-HR reports Group One Trading 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.