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Super Investors Zweig-DiMenna Associates LLC
ZA

Zweig-DiMenna Associates LLC

Quarterly 13F snapshot: US-listed longs only, no performance figures — 13F data cannot support them.

Portfolio value
$1.1B
Positions
70
Quarter ended
June 30, 2026
Filed
August 13, 2026

Reported portfolio value by quarter (53 quarters reported)

$2.73B $459M
Q2 13 Q1 16 Q4 18 Q3 21 Q2 24 Q2 26

$2.48B in Q2 2013 → $1.1B now. Hover for any quarter.

Holdings

As reported for the quarter ended June 30, 2026. Activity is the change in share count since the prior quarter's filing.

Holding % of portfolio Activity Shares Value
Sandisk Corp 6.7% Added 31% 32,609 $74.1M
Amazon Com Inc 4.9% Trimmed 37% 226,579 $54M
Micron Technology Inc 4.3% Trimmed 9.1% 41,377 $47.8M
Genedx Holdings Corp 3.6% Trimmed 17% 571,950 $39.3M
Applied Materials 3.6% Trimmed 17% 54,128 $39.1M
Lam Research 3.5% Trimmed 7.8% 88,966 $38.6M
Advanced Micro Devices Inc 3.3% Added 82% 63,226 $36.7M
Coherent Corp 3.3% Trimmed 21% 92,371 $36.4M
Applovin Corp 3.2% Trimmed 15% 68,675 $35.4M
LH Lumentum Hldgs Inc 2.8% Trimmed 10% 36,553 $31.4M
TS Taiwan Semiconductor Mfg Ltd 2.8% Trimmed 16% 64,728 $30.9M
Nvidia Corporation 2.7% Added 12% 146,615 $29.3M
Visa Inc 2.4% Added 16% 77,150 $26.5M
Broadcom Inc 2.4% Added 0.3% 69,814 $26.4M
Revolution Medicines Inc 2.0% Added 1350% 120,200 $22.5M
Nxp Semiconductors Nv 2.0% Added 96% 79,301 $22.3M
Natera Inc 2.0% Added 7.5% 81,982 $22.3M
Planet Labs Pbc 2.0% New 660,200 $21.9M
Vertiv Holdings Co 1.9% Trimmed 20% 63,502 $21.3M
Teradyne Inc 1.7% Unchanged 38,034 $18.4M
Bloom Energy Corp 1.6% Trimmed 8.0% 57,525 $17.4M
ST Seagate Technology Hldngs Pl 1.6% Unchanged 17,844 $17.2M
Dell Technologies 1.5% New 37,500 $16.2M
Terawulf Inc 1.4% Trimmed 4.5% 637,982 $15.8M
Crowdstrike Holdings Inc 1.4% Trimmed 56% 20,511 $15.7M
Capital One Financial Corp 1.4% New 75,000 $15M
Meta Platforms Inc 1.4% Trimmed 27% 26,520 $14.9M
Alphabet Inc 1.3% Trimmed 20% 41,450 $14.8M
Analog Devices 1.3% New 36,250 $14.4M
Marvell Technology Inc 1.3% New 48,233 $14.4M
QS Quanta Svcs Inc 1.3% Added 28% 19,850 $14.3M
Solaris Energy Infrastructure 1.3% Added 263% 172,650 $13.9M
Intel Corp 1.2% New 98,400 $13.7M
Delta Air Lines Inc 1.1% Trimmed 37% 133,850 $12.5M
Spotify Technology S A 1.1% Trimmed 1.4% 27,021 $12.4M
Onto Innovation Inc 1.1% New 32,600 $12.3M
Microchip Technology 1.0% Trimmed 15% 125,644 $11.5M
Caredx Inc 1.0% Trimmed 0.4% 388,812 $11.1M
Microsoft Corp 1.0% Added 4.8% 29,200 $10.9M
AO Applied Optoelr 1.0% Trimmed 10% 71,835 $10.6M
Arista Networks Inc 1.0% Trimmed 21% 62,304 $10.6M
Porch Group Inc 0.9% Trimmed 17% 693,738 $10.4M
Qxo Inc 0.9% Added 2.8% 598,900 $10.3M
Xometry Inc 0.9% Unchanged 102,650 $9.91M
Siriuspoint Ltd 0.9% Unchanged 397,350 $9.54M
Thredup Inc 0.7% Trimmed 21% 1,154,000 $7.9M
Embraer Sa 0.7% Unchanged 122,161 $7.79M
Fabrinet 0.7% Unchanged 12,900 $7.25M
Netflix Inc 0.7% Unchanged 101,000 $7.21M
KD Kratos Defense & Security Soltns Inc 0.6% Trimmed 7.7% 143,026 $7.13M
Hut 8 Mining Corp 0.6% Trimmed 58% 60,738 $7.01M
Talen Energy Corp 0.6% New 17,650 $6.78M
Forgent Power Solutions Inc 0.6% New 109,268 $6.1M
Rhythm Pharmaceuticals Inc 0.4% New 42,100 $4.67M
Luxexperience Bv 0.4% Unchanged 590,000 $4.38M
Snowflake Inc 0.3% Trimmed 63% 14,500 $3.69M
Borr Drilling Ltd 0.3% New 877,000 $3.62M
Quantinuum Inc 0.3% New 41,000 $3.35M
C3.ai Inc 0.3% Added 14% 362,450 $3.29M
Bbb Foods Inc 0.2% New 64,100 $2.67M

Showing top 60 of 70 positions.

Timeline of changes

What changed each quarter, from the filings' own share counts. Largest moves first; most recent 8 quarters.

Q2 2026

quarter ended June 30, 2026 · filed August 13, 2026

Company Action Shares changed Value of change % of portfolio
Amazon Com Inc Trimmed −133,180 −$31.7M 4.9%
Planet Labs Pbc New +660,200 +$21.9M 2.0%
Revolution Medicines Inc Added +111,913 +$21M 2.0%
Crowdstrike Holdings Inc Trimmed −25,989 −$19.8M 1.4%
Sandisk Corp Added +7,759 +$17.6M 6.7%
Advanced Micro Devices Inc Added +28,467 +$16.5M 3.3%
Dell Technologies New +37,500 +$16.2M 1.5%
Capital One Financial Corp New +75,000 +$15M 1.4%
Analog Devices New +36,250 +$14.4M 1.3%
Marvell Technology Inc New +48,233 +$14.4M 1.3%

Showing the 10 largest of 72 changes.

Q1 2026

quarter ended March 31, 2026 · filed May 05, 2026

Company Action Shares changed Value of change % of portfolio
LH Lumentum Hldgs Inc Trimmed −90,817 −$63.8M 4.0%
Microsoft Corp Exited −1,250 −$60.5M —
Amazon Com Inc Exited −2,600 −$60M —
QS Quanta Svcs Inc Trimmed −83,450 −$45.8M 1.2%
Broadcom Inc Trimmed −142,780 −$44.2M 3.0%
TS Taiwan Semiconductor Mfg Ltd Trimmed −113,495 −$38.4M 3.6%
Celestica Inc Exited −100,439 −$29.7M —
Cyberark Software Ltd Exited −65,459 −$29.2M —
Sandisk Corp Trimmed −41,650 −$26.5M 2.2%
Alphabet Inc Exited −825 −$25.8M —

Showing the 10 largest of 118 changes.

Q4 2025

quarter ended December 31, 2025 · filed February 10, 2026

Company Action Shares changed Value of change % of portfolio
Microsoft Corp New +1,250 +$60.5M 3.8%
Amazon Com Inc New +2,600 +$60M 3.7%
Boston Scientific Corp Exited −6,000 −$58.6M —
Amazon Com Inc Exited −2,200 −$48.3M —
Alphabet Inc New +825 +$25.8M 1.6%
Meta Platforms Inc New +300 +$19.8M 1.2%
Sandisk Corp New +66,500 +$15.8M 1.0%
Qxo Inc Exited −802,800 −$15.3M —
Pinterest Inc Exited −472,350 −$15.2M —
Netflix Inc Added +158,575 +$14.9M 1.0%

Showing the 10 largest of 105 changes.

Q3 2025

quarter ended September 30, 2025 · filed November 07, 2025

Company Action Shares changed Value of change % of portfolio
Boston Scientific Corp New +6,000 +$58.6M 4.1%
IQ Invesco Qqq Tr Exited −950 −$52.4M —
Amazon Com Inc New +2,200 +$48.3M 3.4%
Microsoft Corp Exited −520 −$25.9M —
Hut 8 Mining Corp Added +508,700 +$17.7M 1.7%
Coreweave Inc New +127,250 +$17.4M 1.2%
Boston Scientific Corp New +1,450 +$14.2M 1.0%
Servicetitan Inc Exited −116,000 −$12.4M —
Alphabet Inc New +500 +$12.2M 0.9%
Eos Energy Enterprises Inc New +1,021,000 +$11.6M 0.8%

Showing the 10 largest of 99 changes.

Q2 2025

quarter ended June 30, 2025 · filed August 05, 2025

Company Action Shares changed Value of change % of portfolio
IQ Invesco Qqq Tr New +950 +$52.4M 5.0%
TS Taiwan Semiconductor Mfg Ltd Added +128,710 +$29.2M 4.3%
Microsoft Corp New +520 +$25.9M 2.4%
Alibaba Group Holding Ltd Exited −131,100 −$17.3M —
Celestica Inc New +100,439 +$15.7M 1.5%
SG SPDR Gold Trust New +50,875 +$15.5M 1.5%
Pinterest Inc New +412,700 +$14.8M 1.4%
Amazon Com Inc Added +61,175 +$13.4M 7.4%
Marvell Technology Inc Added +173,000 +$13.4M 1.9%
Capital One Financial Corp New +57,500 +$12.2M 1.2%

Showing the 10 largest of 89 changes.

Q1 2025

quarter ended March 31, 2025 · filed May 07, 2025

Company Action Shares changed Value of change % of portfolio
IQ Invesco Qqq Tr Exited −300,000 −$153M —
Vistra Corp Exited −252,573 −$34.8M —
Nvidia Corporation Trimmed −313,805 −$34M 2.7%
Everest Group Ltd Exited −79,909 −$29M —
Meta Platforms Inc Trimmed −48,737 −$28.1M 1.8%
Microsoft Corp Trimmed −68,628 −$25.8M 1.7%
Servicenow Inc Exited −18,766 −$19.9M —
AC Arch Cap Group Ltd Exited −204,505 −$18.9M —
Hubspot Inc Exited −26,254 −$18.3M —
Oracle Corp Exited −107,500 −$17.9M —

Showing the 10 largest of 113 changes.

Q4 2024

quarter ended December 31, 2024 · filed January 21, 2025

Company Action Shares changed Value of change % of portfolio
IQ Invesco Qqq Tr New +300,000 +$153M 11.5%
Applovin Corp New +73,500 +$23.8M 1.8%
Genedx Holdings Corp New +309,500 +$23.8M 1.8%
Oracle Corp New +107,500 +$17.9M 1.3%
Arista Networks Inc New +119,044 +$13.2M 1.0%
EL Eli Lilly & Co Trimmed −16,765 −$12.9M 0.3%
Ftai Aviation Ltd New +87,060 +$12.5M 0.9%
Samsara Inc Added +266,850 +$11.7M 1.2%
Spotify Technology S A Added +25,850 +$11.6M 1.0%
Arista Networks Inc Exited −29,761 −$11.4M —

Showing the 10 largest of 82 changes.

Q3 2024

quarter ended September 30, 2024 · filed October 23, 2024

Company Action Shares changed Value of change % of portfolio
Broadcom Inc Added +268,221 +$46.3M 5.2%
Natera Inc Added +165,100 +$21M 3.1%
Arista Networks Inc New +29,761 +$11.4M 1.2%
Newmont Corp New +185,600 +$9.92M 1.0%
Terawulf Inc New +2,027,500 +$9.49M 1.0%
NA Novo-nordisk A S Exited −61,100 −$8.72M —
IT Ishares Tr New +263,200 +$8.36M 0.8%
KT Kraneshares Trust New +233,500 +$7.94M 0.8%
Hubspot Inc Added +14,000 +$7.44M 1.7%
Apple Inc Exited −35,000 −$7.37M —

Showing the 10 largest of 75 changes.

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