Stocks/Funds/CIK 1533950

Zweig-DiMenna Associates LLC

long-term holder
Quarterly 13F filings · Latest period 2026-03-31 · CIK 1533950
Assets
$713M
+14.2% YoY
Holdings
59
Lifetime alpha vs market
+4.16% annual
Average hold time
3.2 yr
median 1.5 yr

Quarterly history

Cum return +102% vs S&P +61% · α +41% lifetimeAUM $713M · peak $1.6BFlow $-709M (-50%)2016-062017-122019-062020-122022-062023-122025-062026-03
AUM ($B)fundS&P 500(gap = α)/ Flow in/out

Behavior signals (lifetime)

Dip response
-12.23%
trims when stocks drop
when a holding falls −10%+
Middle response
-8.39%
baseline attrition
Rally response
-6.03%
trims into rallies
when a holding rises +10%+

Top positions · 30

Ticker$ value% portYoYHold time
AMZNAmazon.com, Inc.$75M10.5%+9.5%10.5 yr
WGSGeneDx Holdings Corp.$44M6.2%-27.5%1.5 yr
APPAppLovin Corporation$32M4.5%+50.2%1.5 yr
LITELumentum Holdings Inc.$29M4.0%+1027.3%3.8 yr
COHRCoherent, Inc.$28M3.9%+266.8%2.3 yr
TSMTaiwan Semiconductor Man$26M3.7%+105.6%7.5 yr
NVDANVIDIA Corporation$23M3.2%+60.9%7.8 yr
AMATApplied Materials, Inc.$22M3.1%+137.6%6.0 yr
AVGOBroadcom Inc.$22M3.0%+86.0%6.3 yr
METAMeta Platforms, Inc.$21M2.9%-0.4%10.0 yr
LRCXLam Research Corporation$21M2.9%+196.1%1.0 yr
VVisa Inc.$20M2.8%-13.1%10.5 yr
VRTVertiv Holdings Co$20M2.8%+247.5%2.3 yr
CRWDCrowdStrike Holdings, In$18M2.5%+10.7%5.3 yr
SNDKSandisk Corporation$16M2.2%+1234.5%1.0 yr

Portfolio composition (YoY)

Industry mix
Semiconductors24.0%+11.1pp$171M
Specialty Retail11.2%-4.0pp$80M
Hardware, Equipment & Parts7.4%+7.1pp$53M
Internet Content & Information6.9%+0.7pp$49M
Medical - Healthcare Information Services6.2%-0.3pp$44M
Software - Application6.2%-2.9pp$44M
Software - Infrastructure5.1%-2.5pp$37M
Communication Equipment4.0%$29M
Electrical Equipment & Parts4.0%+2.9pp$28M
Medical - Diagnostics & Research3.1%+0.4pp$22M
Country
US87.4%+11.9pp
TW3.7%+1.7pp
LU1.9%-0.3pp
Unknown1.4%-4.9pp
NL1.1%
BR1.0%-0.1pp
CA1.0%
SG1.0%
Top 5: 29.2% · Top 10: 45.1% · Top 25: 76.1%

Winners

TickerPrev $PnLYoY %
AVGO$35M+0.03B86.0%
PWR$24M+0.03B116.2%
SNDK$2M+0.02B1234.5%
APP$35M+0.02B50.2%
VRT$7M+0.02B247.5%

Losers

TickerPrev $PnLYoY %
WGS$40M-0.01B-27.5%
V$16M-0.00B-13.1%
SPOT$13M-0.00B-11.8%
MSFT$11M-0.00B-0.6%
META$11M-0.00B-0.4%

Top buys this quarter · 15

AMAT Applied Materials, Inc.+$15M
CRWD CrowdStrike Holdings, Inc.+$13M
COHR Coherent, Inc.+$9M
BE Bloom Energy Corporationnew+$8M
ANET Arista Networks, Inc.+$7M
FN Fabrinetnew+$7M
LRCX Lam Research Corporation+$7M
MU Micron Technology, Inc.+$6M
WGS GeneDx Holdings Corp.+$44M
SNOW Snowflake Inc.+$5M

Top sells this quarter · 15

LITE Lumentum Holdings Inc.$64M
PWR Quanta Services, Inc.$46M
AVGO Broadcom Inc.$44M
TSM Taiwan Semiconductor Manufactu$38M
HUT.TO Hut 8 Mining Corp.$34M
VST Vistra Corp.$34M
CLS Celestica Inc.exit$28M
SNDK Sandisk Corporation$16M
MRVL Marvell Technology, Inc.exit$24M
WDC Western Digital Corporationexit$22M

Quarterly history (TTM returns)

PeriodAUM# PosReturn (1yr)SPY (1yr)Alpha (1yr)Flow
2026-03-31$713M59+63.97%+17.59%+46.38%-0.71B
2025-12-31$1.41B97+44.64%+17.72%+26.93%-0.02B
2025-09-30$1.29B94+43.47%+17.52%+25.96%+0.12B
2025-06-30$975M83+22.71%+14.94%+7.77%+0.21B
2025-03-31$624M62+1.28%+8.30%-7.02%-0.43B
2024-12-31$1.18B88-35.80%+24.89%-60.68%+0.10B
2024-09-30$986M85-46.91%+36.04%-82.94%+0.09B
2024-06-30$881M75-30.02%+24.49%-54.51%-0.26B
2024-03-31$1.13B121-15.97%+29.62%-45.59%+0.64B
2023-12-31$868M106+53.55%+26.18%+27.38%+0.11B
2023-09-30$832M108+75.67%+21.57%+54.11%-0.17B
2023-06-30$744M112+27.44%+19.42%+8.02%-0.15B
2023-03-31$739M104-10.32%-7.82%-2.50%+0.04B
2022-12-31$681M107+4.41%+7.56%-3.15%+0.20B
2022-09-30$459M86-2.30%-4.93%+2.63%-0.03B
2022-06-30$501M85-14.71%-16.11%+1.40%-0.06B