Zweig-DiMenna Associates LLC
Long book
$713.0M
Q1 2026
Positions
59
Top-10 weight
45%
concentration
Last quarter
+35.9%
SPY +14.8%
Turnover
57%
of book per quarter
Strategy in plain words
auto-generated from filingsZweig-DiMenna Associates LLC is a diversified fundamental manager, running a $713.0M US long book across 59 positions.
The portfolio is moderately concentrated (top 10 ≈ 45% of the book). Turnover is high — positions rotate quickly, so individual names matter less than the process. Current anchor positions: AMAZON.COM INC, GENEDX HOLDINGS CORP, APPLOVIN CORP-CLASS A, LUMENTUM HOLDINGS INC, COHERENT CORP.
Over the last 9 quarters its long book ran on average 4.3pp per quarter ahead of the S&P 500, beating the index in 6 of 9 quarters. We rate its filings as signal-bearing: position changes reflect genuine views.
Implied long-book return vs S&P 500
methodology: positions priced quarterly, no shorts/options Fund long book S&P 500
Q1 2024
+4.2%
Q2 2024
+2.4%
Q3 2024
+7.2%
Q4 2024
-13.7%
Q1 2025
+22.2%
Q2 2025
+16.8%
Q3 2025
+5.3%
Q4 2025
-1.2%
Q1 2026
+35.9%
Sector allocation
Technology 49%
Consumer discretionary 14%
Healthcare 10%
Industrials 10%
Services media 6%
Other 5%
Financials 4%
Communications 2%
Long book by quarter
What does Zweig-DiMenna Associates own?
Q1 2026 13F| Company | Sector | Shares | Value | % of book | Change |
|---|---|---|---|---|---|
| AMZN AMAZON.COM INC | Consumer discretionary | 359.8K | $74.9M | 10.5% | -2.2% |
| WGS GENEDX HOLDINGS CORP | Healthcare | 689.3K | $44.3M | 6.2% | +15.3% |
| APP APPLOVIN CORP-CLASS A | Technology | 81.0K | $32.2M | 4.5% | -32.5% |
| LITE LUMENTUM HOLDINGS INC | Technology | 40.8K | $28.6M | 4.0% | -69.0% |
| COHR COHERENT CORP | Other | 116.8K | $27.8M | 3.9% | +51.8% |
| NVDA NVIDIA CORP | Technology | 130.6K | $22.8M | 3.2% | -25.9% |
| AMAT APPLIED MATERIALS INC | Technology | 65.3K | $22.3M | 3.1% | New |
| AVGO BROADCOM INC | Technology | 69.6K | $21.5M | 3.0% | -67.2% |
| META META PLATFORMS INC-CLASS A | Technology | 36.3K | $20.8M | 2.9% | +19.9% |
| LRCX LAM RESEARCH CORP | Industrials | 96.5K | $20.6M | 2.9% | +47.6% |
| V VISA INC-CLASS A SHARES | Services media | 66.7K | $20.2M | 2.8% | +20.4% |
| VRT VERTIV HOLDINGS CO-A | Technology | 79.6K | $19.9M | 2.8% | -21.7% |
| CRWD CROWDSTRIKE HOLDINGS INC - A | Technology | 46.5K | $18.2M | 2.5% | New |
| SNDK SANDISK CORP | Technology | 24.9K | $15.8M | 2.2% | -62.6% |
| MU MICRON TECHNOLOGY INC | Technology | 45.5K | $15.4M | 2.2% | +72.3% |
| NTRA NATERA INC | Healthcare | 76.3K | $15.2M | 2.1% | -43.4% |
| GOOGL ALPHABET INC-CL A | Technology | 51.7K | $14.9M | 2.1% | -1.1% |
| DAL DELTA AIR LINES INC | Industrials | 212.1K | $14.1M | 2.0% | -22.1% |
| SPOT SPOTIFY TECHNOLOGY SA | Communications | 27.4K | $13.3M | 1.9% | -2.9% |
| QXO QXO INC | Consumer discretionary | 582.5K | $11.3M | 1.6% | New |
| TER TERADYNE INC | Technology | 38.0K | $11.3M | 1.6% | -52.8% |
| KTOS KRATOS DEFENSE & SECURITY | Industrials | 155.0K | $10.9M | 1.5% | -25.8% |
| MSFT MICROSOFT CORP | Technology | 27.9K | $10.3M | 1.4% | -41.3% |
| NFLX NETFLIX INC | Services media | 101.0K | $9.7M | 1.4% | -41.0% |
| ANET ARISTA NETWORKS INC | Technology | 78.5K | $9.6M | 1.4% | +248.9% |
| WULF TERAWULF INC | Financials | 667.8K | $9.6M | 1.4% | -64.3% |
| MCHP MICROCHIP TECHNOLOGY INC | Technology | 147.0K | $9.5M | 1.3% | +21.0% |
| SPNT SIRIUSPOINT LTD | Financials | 397.4K | $8.6M | 1.2% | -19.2% |
| PWR QUANTA SERVICES INC | Industrials | 15.6K | $8.5M | 1.2% | -84.3% |
| BE BLOOM ENERGY CORP- A | Industrials | 62.5K | $8.5M | 1.2% | New |
| NXPI NXP SEMICONDUCTORS NV | Technology | 40.4K | $8.0M | 1.1% | -35.3% |
| AMD ADVANCED MICRO DEVICES | Technology | 34.8K | $7.1M | 1.0% | -53.4% |
| STXN SEAGATE TECHNOLOGY HOLDINGS | — | 17.8K | $7.0M | 1.0% | -76.2% |
| HUT HUT 8 CORP | Financials | 145.6K | $6.8M | 1.0% | -78.4% |
| CDNA CAREDX INC | Healthcare | 390.3K | $6.8M | 1.0% | -42.5% |
| AAOI APPLIED OPTOELECTRONICS INC | Technology | 80.0K | $6.8M | 0.9% | +2.0% |
| FN FABRINET | Technology | 12.9K | $6.7M | 0.9% | New |
| PRCH PORCH GROUP INC | Technology | 839.5K | $6.0M | 0.8% | -36.8% |
| SNOW SNOWFLAKE INC | Technology | 39.6K | $6.0M | 0.8% | New |
| SNPS SYNOPSYS INC | Technology | 14.5K | $5.7M | 0.8% | -37.0% |
| LVS LAS VEGAS SANDS CORP | Services media | 97.5K | $5.3M | 0.7% | -49.4% |
| TDUP THREDUP INC - CLASS A | Consumer discretionary | 1.5M | $4.8M | 0.7% | +170.1% |
| VST VISTRA CORP | Utilities | 29.0K | $4.4M | 0.6% | New |
| XMTR XOMETRY INC-A | Services media | 102.7K | $4.2M | 0.6% | -19.5% |
| ALNT ALLIENT INC | Technology | 47.0K | $2.8M | 0.4% | New |
| AI C3.AI INC-A | Technology | 318.9K | $2.7M | 0.4% | New |
| SEI SOLARIS ENERGY INFRASTRUCTUR | Industrials | 47.5K | $2.7M | 0.4% | New |
| KVYO KLAVIYO INC-A | Technology | 129.2K | $2.5M | 0.4% | New |
| ONB OLD NATIONAL BANCORP | Financials | 100.0K | $2.2M | 0.3% | Held |
| ROOT ROOT INC/OH -CLASS A | Financials | 27.0K | $1.2M | 0.2% | New |
13F filing history
| Period | Form | Filed | Entries | Reported value | Flags | Source |
|---|---|---|---|---|---|---|
| Q1 2026 | 13F-HR | May 5, 2026 | 61 | $722.2M | canonical | SEC ↗ |
| Q4 2025 | 13F-HR | Feb 10, 2026 | 106 | $1.61B | canonical | SEC ↗ |
| Q3 2025 | 13F-HR | Nov 7, 2025 | 99 | $1.43B | canonical | SEC ↗ |
| Q2 2025 | 13F-HR | Aug 5, 2025 | 86 | $1.06B | canonical | SEC ↗ |
| Q1 2025 | 13F-HR | May 7, 2025 | 64 | $631.4M | canonical | SEC ↗ |
| Q4 2024 | 13F-HR | Jan 21, 2025 | 89 | $1.34B | canonical | SEC ↗ |
| Q3 2024 | 13F-HR | Oct 23, 2024 | 86 | $990.0M | canonical | SEC ↗ |
| Q2 2024 | 13F-HR | Jul 24, 2024 | 76 | $888.0M | canonical | SEC ↗ |
| Q1 2024 | 13F-HR | Apr 29, 2024 | 122 | $1.15B | canonical | SEC ↗ |
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