Zweig-DiMenna Associates LLC reported 70 positions worth $1.10B for the quarter ended Jun 30, 2026, up 55.3% on the prior quarter. It opened 21 new positions, added to 13, trimmed 26 and exited 7. Its largest holding is Sandisk Corp at 6.7% 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 |
|---|---|---|---|---|
| PL Planet Labs PBC | +660.2K | – | $21.87M | 1.98% |
| RVMD Revolution Medicines, Inc. | +111.9K | +1,350.5% | $20.96M | 2.04% |
| SNDK Sandisk Corp | +7,759 | +31.2% | $17.64M | 6.73% |
| AMD Advanced Micro Devices Inc | +28.5K | +81.9% | $16.54M | 3.33% |
| DELL Dell Technologies Inc. | +37.5K | – | $16.18M | 1.47% |
| COF Capital One Financial Corp | +75.0K | – | $15.05M | 1.37% |
| ADI Analog Devices Inc | +36.3K | – | $14.40M | 1.31% |
| MRVL Marvell Technology, Inc. | +48.2K | – | $14.37M | 1.3% |
| INTC Intel Corp | +98.4K | – | $13.74M | 1.25% |
| ONTO Onto Innovation Inc. | +32.6K | – | $12.34M | 1.12% |
| Holding | Change | Change % | Trade Value | Weight |
|---|---|---|---|---|
| AMZN Amazon Com Inc | -133.2K | -37.0% | $31.74M | 4.9% |
| CRWD CrowdStrike Holdings, Inc. | -104.0K | -55.9% | $19.83M | 1.42% |
| HUT Hut 8 Corp. | -84.9K | -58.3% | $9.80M | 0.636% |
| COHR Coherent Corp. | -24.4K | -20.9% | $9.62M | 3.31% |
| AMAT Applied Materials Inc | -11.2K | -17.1% | $8.08M | 3.55% |
| WGS GeneDx Holdings Corp. | -117.3K | -17.0% | $8.06M | 3.56% |
| DAL Delta Air Lines, Inc. | -78.2K | -36.9% | $7.33M | 1.14% |
| SNOW Snowflake Inc. | -25.1K | -63.4% | $6.39M | 0.335% |
| APP AppLovin Corp | -12.3K | -15.2% | $6.32M | 3.21% |
| TSM Taiwan Semiconductor Manufacturing Co Ltd | -12.7K | -16.4% | $6.06M | 2.8% |
| Holding | Shares | Trade Value | Weight |
|---|---|---|---|
| PL Planet Labs PBC | +660.2K | $21.87M | 1.98% |
| DELL Dell Technologies Inc. | +37.5K | $16.18M | 1.47% |
| COF Capital One Financial Corp | +75.0K | $15.05M | 1.37% |
| ADI Analog Devices Inc | +36.3K | $14.40M | 1.31% |
| MRVL Marvell Technology, Inc. | +48.2K | $14.37M | 1.3% |
| INTC Intel Corp | +98.4K | $13.74M | 1.25% |
| ONTO Onto Innovation Inc. | +32.6K | $12.34M | 1.12% |
| TLN Talen Energy Corp | +17.7K | $6.78M | 0.615% |
| FPS Forgent Power Solutions, Inc. | +109.3K | $6.10M | 0.554% |
| RYTM Rhythm Pharmaceuticals, Inc. | +42.1K | $4.67M | 0.424% |
| Holding | Shares Sold | Trade Value | Prior Weight |
|---|---|---|---|
| SNPS Synopsys Inc | -14.5K | $5.74M | 0.809% |
| LVS Las Vegas Sands Corp | -97.5K | $5.25M | 0.74% |
| VST Vistra Corp. | -29.0K | $4.36M | 0.614% |
| ALNT Allient Inc | -47.0K | $2.78M | 0.391% |
| KVYO Klaviyo, Inc. | -129.2K | $2.51M | 0.354% |
| ROOT Root, Inc. | -27.0K | $1.19M | 0.168% |
| BTBT Bit Digital, Inc | -253.0K | $331.43K | 0.047% |
| # | Activity | ||||||||
|---|---|---|---|---|---|---|---|---|---|
| 1 | SNDK Sandisk Corp | Technology | 32.6K | $74.14M | 6.73% | +7,759 | +31.2% | Added | 0.02% |
| 2 | AMZN Amazon Com Inc | Consumer Discretionary | 226.6K | $54.00M | 4.9% | -133.2K | -37.0% | Reduced | 0% |
| 3 | MU Micron Technology Inc | Technology | 41.4K | $47.76M | 4.33% | -4,123 | -9.1% | Reduced | 0% |
| 4 | WGS GeneDx Holdings Corp. | Healthcare | 572.0K | $39.26M | 3.56% | -117.3K | -17.0% | Reduced | 1.93% |
| 5 | AMAT Applied Materials Inc | Technology | 54.1K | $39.13M | 3.55% | -11.2K | -17.1% | Reduced | 0.01% |
| 6 | LRCX Lam Research Corp | Technology | 89.0K | $38.55M | 3.5% | -7,534 | -7.8% | Reduced | 0.01% |
| 7 | AMD Advanced Micro Devices Inc | Technology | 63.2K | $36.73M | 3.33% | +28.5K | +81.9% | Added | 0% |
| 8 | COHR Coherent Corp. | Technology | 92.4K | $36.44M | 3.31% | -24.4K | -20.9% | Reduced | 0.05% |
| 9 | APP AppLovin Corp | Technology | 68.7K | $35.38M | 3.21% | -12.3K | -15.2% | Reduced | 0.02% |
| 10 | LITE Lumentum Holdings Inc. | Technology | 36.6K | $31.36M | 2.85% | -4,197 | -10.3% | Reduced | 0.04% |
| 11 | TSM Taiwan Semiconductor Manufacturing Co Ltd | Technology | 64.7K | $30.91M | 2.8% | -12.7K | -16.4% | Reduced | 0% |
| 12 | NVDA Nvidia Corp | Technology | 146.6K | $29.34M | 2.66% | +16.0K | +12.2% | Added | 0% |
| 13 | V Visa Inc. | Financial Services | 77.2K | $26.47M | 2.4% | +10.5K | +15.7% | Added | 0% |
| 14 | AVGO Broadcom Inc. | Technology | 69.8K | $26.37M | 2.39% | +214 | +0.3% | Added | 0% |
| 15 | RVMD Revolution Medicines, Inc. | Healthcare | 120.2K | $22.51M | 2.04% | +111.9K | +1,350.5% | Added | 0.06% |
Tip. Select a row to see that position’s full history at Zweig-DiMenna Associates.
As of its Q2 2026 13F filing, Zweig-DiMenna Associates LLC’s five largest positions were Sandisk Corp (SNDK) at 6.7%, Amazon Com Inc (AMZN) at 4.9%, Micron Technology Inc (MU) at 4.3%, GeneDx Holdings Corp. (WGS) at 3.6%, Applied Materials Inc (AMAT) at 3.6% of the reported portfolio.
Zweig-DiMenna Associates LLC reported a 13F portfolio worth $1.10B across 70 positions for Q2 2026. That is up 55.3% from the previous quarter.
Its largest purchases by value were Planet Labs PBC ($21.87M), Revolution Medicines, Inc. ($20.96M), Sandisk Corp ($17.64M). It opened 21 new positions.
Its largest sales by value were Amazon Com Inc ($31.74M), CrowdStrike Holdings, Inc. ($19.83M), Hut 8 Corp. ($9.80M). It exited 7 positions entirely.
From the Form 13F-HR reports Zweig-DiMenna Associates 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.