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Zweig-DiMenna Associates LLC — 13F Holdings & Portfolio

CIK 1533950 · latest 13F-HR filed 2026-11-06

Backtest portfolio

Zweig-DiMenna Associates LLC manages $1.30B in 13F-reported U.S. long-equity assets across 89 reported positions as of its 2026-09-30 13F-HR filing. Its largest disclosed positions are LITE (5.35%), MU (4.49%), AMZN (4.48%). Quarter over quarter (versus its 2026-06-30 filing) the fund opened 30 new positions and exited 13; 22 existing positions rose in reported value and 27 fell.

AUM is the long-equity portion reported on Form 13F-HR. Excludes short positions, cash, foreign holdings, and non-13F assets. For informational purposes only — not investment advice.

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AUM
$1.30B

Long-equity book

Holdings
89

Distinct positions

Period
2026-09-30

Filed 2026-11-06

Q/Q Activity
+30 / −13 / ↑22 / ↓27

vs 2026-06-30

Portfolio charts

Latest quarter's book, what changed, and how the portfolio has evolved across filings.

Portfolio map

Q3 26
LITE5.4% · +96%MU4.5% · +32%AMZN4.5% · +3%SNDK4.3% · -3%TSM3.4% · +49%LRCX2.8% · +25%NTRA2.7% · +3%NVDA2.6% · +2%AMD2.6% · -12%AMAT2.6% · +21%COHR2.5% · +20%STX2.2% · +76%INTC2.1% · +127%WGS2.0% · -37%V2.0% · -7%CDNA2.0% · +0%CRWD1.9% · +343%AVGO1.8% · -5%RVMD1.8% · -7%VRT1.7% · +44%HNGE1.7% · newSKHY1.6% · newBE1.5% · +25%NXPI1.5% · 0%DAL1.3% · +51%LLY1.3% · newPANW1.2% · newTER1.2% · +5%GOOGL1.2% · +12%PWR1.1% · +10%SNOW1.1% · +179%PRCH1.1% · +19%MSFT1.0% · -12%MRVL1.0% · 0%META1.0% · -36%DPC0.9% · +5341%AMRC0.9% · newFANG0.9% · newCOF0.9% · -22%XOM0.9% · newHUT0.8% · +108%WULF0.8% · +14%TSEM0.8% · newXMTR0.8% · 0%GH0.8% · newSPOT0.8% · -23%ZS0.8% · newDVN0.8% · newMCHP0.8% · 0%CLS0.8% · newGIS0.8% · +325%SPNT0.7% · 0%OKTA0.7% · newSLB0.7% · newEMBJ0.7% · 0%ANET0.7% · -33%AAOI0.6% · +13%MA0.6% · newAPP0.6% · -64%NFLX0.5% · 0%

Box size = position value; colour = change in share count vs the prior quarter (green added, red trimmed, blue new). Rows split across managers or share classes are combined. Click a box for the stock.

Sector mix

% of 13F value

Sectors from each company's SIC code; funds and ETFs grouped separately.

Biggest buys and sells

Q2 26 → Q3 26

Estimated from the change in shares held × the quarter-end price, so price moves alone don't count as buying. New and exited positions are included.

13F assets and positions

4 quarters

Total reported 13F value (bars) and number of positions (line) each quarter. Value changes include market moves.

Top positions over time

reported value

The eight largest current positions, valued at each quarter end.

Concentration

top 10 = 35.5%

Cumulative share of the portfolio held in the largest N positions.

Firm Profile & Key People

As of the firm’s regulatory filing dated Apr 29, 2026.

Assets Under Management
$1.63B
Discretionary
$1.63B
Employees
31
Accounts
6
Address
900 THIRD AVE
NEW YORK, NY 10022
Phone
(212) 451-1100
Website
Name Title / Status Ownership Type
CANNON, KEVIN, P ControlCEO
since Jan 2000
Less than 5%Individual
DIMENNA, JOSEPH, ANTHONY ControlMANAGING DIRECTOR
since Feb 1995
75% or moreIndividual
KEYES, THOMAS, FRANCESEXECUTIVE VICE PRESIDENT
since Dec 2013
Less than 5%Individual
LINK, MICHAEL, GEORGETREASURER
since Apr 2003
Less than 5%Individual
LUCHINS, MOSHE, ACHIEF COMPLIANCE OFFICER
since Jul 2016
Less than 5%Individual
PANISH, STUART, BERTGENERAL COUNSEL
since Feb 1995
Less than 5%Individual
Ownership & leadership changes · 4 filings with changes since Feb 13, 2012

From the firm’s regulatory filings, newest first. Dates are filing dates: a filing that no longer lists someone does not say when they left.

Mar 28, 2018 filing
  • No longer listedLANESE, JEANNINE, M · VP OF OPERATIONS · Less than 5% · listed since Feb 1995
  • AddedKEYES, THOMAS, FRANCES · EXECUTIVE VICE PRESIDENT · Less than 5%
Jul 1, 2016 filing
  • No longer listedBALTUCH, MARC, (NMN) · CHIEF COMPLIANCE OFFICER · Less than 5% · listed since Feb 1995
  • AddedLUCHINS, MOSHE, A · CHIEF COMPLIANCE OFFICER · Less than 5%
Jul 10, 2014 filing
  • No longer listedESTATE OF MARTIN E. ZWEIG · MEMBER · 10–25% · listed since Feb 2013
  • ChangedDIMENNA, JOSEPH, ANTHONY · ownership 50–75% → 75% or more
Mar 14, 2013 filing
  • No longer listedZWEIG, MARTIN, EDWARD · MANAGING DIRECTOR · 10–25% · control person · listed since Feb 1995
  • AddedESTATE OF MARTIN E. ZWEIG · MEMBER · 10–25%
Feb 13, 2012 filing (earliest on record)
  • ListedBALTUCH, MARC, (NMN) · CHIEF COMPLIANCE OFFICER · Less than 5%
  • ListedCANNON, KEVIN, P · CEO · Less than 5% · control person
  • ListedDIMENNA, JOSEPH, ANTHONY · MANAGING DIRECTOR · 50–75% · control person
  • ListedLANESE, JEANNINE, M · VP OF OPERATIONS · Less than 5%
  • ListedLINK, MICHAEL, GEORGE · TREASURER · Less than 5%
  • ListedPANISH, STUART, BERT · GENERAL COUNSEL · Less than 5%
  • ListedZWEIG, MARTIN, EDWARD · MANAGING DIRECTOR · 10–25% · control person

Quarter-over-quarter changes

Changes in reported position value vs the prior 13F, so price moves count too, not just shares bought or sold.

Top Adds (vs prior quarter)

Show all 22 →

Top Trims

Show all 27 →

New Positions

Show all 30 →

Exited Positions

Show all 13 →

Zweig-DiMenna Associates LLC Holdings (2026-09-30)

Rows tagged Call or Put are options positions, not stock. Per SEC Form 13F-HR, Value shows the notional value of the underlying (shares covered × underlying price), not the option premium. Shares is the number of underlying shares covered (divide by 100 for contract count).

# Issuer Symbol CUSIP Value Weight Shares Type
1 LUMENTUM HLDGS INC LITE 55024U109 $69.5M 5.35% 71,592 SH
2 MICRON TECHNOLOGY INC MU 595112103 $58.3M 4.49% 54,702 SH
3 AMAZON COM INC AMZN 023135106 $58.2M 4.48% 233,529 SH
4 SANDISK CORP SNDK 80004C200 $54.9M 4.23% 31,572 SH
5 TAIWAN SEMICONDUCTOR MFG LTD TSM 874039100 $44.0M 3.39% 96,503 SH
6 LAM RESEARCH LRCX 512807306 $36.6M 2.82% 111,391 SH
7 NATERA INC NTRA 632307104 $34.8M 2.68% 84,222 SH
8 NVIDIA CORPORATION NVDA 67066G104 $34.1M 2.63% 149,515 SH
9 ADVANCED MICRO DEVICES INC AMD 007903107 $34.0M 2.62% 55,568 SH
10 APPLIED MATERIALS AMAT 038222105 $33.5M 2.58% 65,506 SH
11 COHERENT CORP COHR 19247G107 $31.8M 2.45% 110,499 SH
12 SEAGATE TECHNOLOGY HLDNGS PL STX G7997R103 $28.9M 2.22% 31,310 SH
13 INTEL CORP INTC 458140100 $26.8M 2.06% 223,015 SH
14 GENEDX HOLDINGS CORP WGS 81663L200 $25.9M 1.99% 358,100 SH
15 VISA INC V 92826C839 $25.8M 1.98% 71,750 SH
16 CAREDX INC CDNA 14167L103 $25.3M 1.95% 389,812 SH
17 CROWDSTRIKE HOLDINGS INC CRWD 22788C105 $24.1M 1.85% 90,944 SH
18 BROADCOM INC AVGO 11135F101 $23.3M 1.79% 66,285 SH
19 REVOLUTION MEDICINES INC RVMD 76155X100 $22.8M 1.76% 111,300 SH
20 VERTIV HOLDINGS CO VRT 92537N108 $22.0M 1.69% 91,198 SH
21 HINGE HEALTH INC HNGE 433313103 $21.6M 1.66% 222,300 SH
22 SK HYNIX INC SKHY 78392B206 $20.7M 1.60% 112,512 SH
23 BLOOM ENERGY CORP BE 093712107 $20.0M 1.54% 72,100 SH
24 NXP SEMICONDUCTORS NV NXPI N6596X109 $18.8M 1.45% 79,301 SH
25 DELTA AIR LINES INC DAL 247361702 $16.9M 1.30% 202,450 SH
26 ELI LILLY & CO LLY 532457108 $16.3M 1.26% 14,090 SH
27 PALO ALTO NETWORK INC PANW 697435105 $16.1M 1.24% 40,500 SH
28 TERADYNE INC TER 880770102 $16.0M 1.23% 39,849 SH
29 ALPHABET INC GOOGL 02079K305 $15.9M 1.23% 46,355 SH
30 QUANTA SVCS INC PWR 74762E102 $14.1M 1.08% 21,900 SH
31 SNOWFLAKE INC SNOW 833445109 $13.8M 1.06% 40,500 SH
32 PORCH GROUP INC PRCH 733245104 $13.7M 1.06% 823,488 SH
33 MICROSOFT CORP MSFT 594918104 $13.2M 1.01% 25,650 SH
34 MARVELL TECHNOLOGY INC MRVL 573874104 $12.7M 0.98% 48,233 SH
35 META PLATFORMS INC META 30303M102 $12.3M 0.95% 16,985 SH
36 DPC HOLDINGS PLC DPC G2R11M108 $12.3M 0.94% 290,000 SH
37 AMERESCO INC AMRC 02361E108 $12.2M 0.94% 588,250 SH
38 DIAMONDBACK ENERGY INC FANG 25278X109 $11.7M 0.90% 63,600 SH
39 CAPITAL ONE FINANCIAL CORP COF 14040H105 $11.3M 0.87% 58,400 SH
40 EXXONMOBIL HOLDINGS CORP XOM 30233Q108 $11.1M 0.85% 68,000 SH
41 HUT 8 MINING CORP HUT 44812J104 $10.9M 0.84% 126,038 SH
42 TERAWULF INC WULF 88080T104 $10.8M 0.83% 727,366 SH
43 TOWER SEMICOND TSEM M87915274 $10.6M 0.81% 46,500 SH
44 XOMETRY INC XMTR 98423F109 $10.6M 0.81% 102,650 SH
45 GUARDANT HEALTH INC GH 40131M109 $10.2M 0.78% 57,100 SH
46 SPOTIFY TECHNOLOGY S A SPOT L8681T102 $10.2M 0.78% 20,846 SH
47 ZSCALER INC ZS 98980G102 $10.1M 0.78% 50,650 SH
48 DEVON ENERGY DVN 25179M103 $9.9M 0.76% 215,000 SH
49 MICROCHIP TECHNOLOGY MCHP 595017104 $9.8M 0.75% 125,644 SH
50 CELESTICA INC CLS 15101Q207 $9.8M 0.75% 27,000 SH
Filing History
Period Filed AUM Holdings Accession
2026-09-30 2026-11-06 $1.30B 89 0001104659-26-123652
2026-06-30 2026-08-13 $1.10B 70 0001104659-26-095779
2026-03-31 2026-05-05 $722.2M 61 0001104659-26-055325
2025-12-31 2026-02-10 $1.61B 106 0001104659-26-012400
Filer Information
Address
900 THIRD AVE
31ST FL
NEW YORK, NY 10022
Phone
(212) 451-1196
Filing Manager
Zweig-DiMenna Associates LLC
NEW YORK, NY
Signatory
Moshe Luchins
Chief Compliance Officer