Stocks/Funds/CIK 897378

CONGRESS ASSET MANAGEMENT CO

long-term holder
Quarterly 13F filings · Latest period 2026-03-31 · CIK 897378
Assets
$13.95B
+4.4% YoY
Holdings
417
Lifetime alpha vs market
-1.48% annual
Average hold time
4.6 yr
median 3.5 yr

Quarterly history

Cum return +220% vs S&P +272% · α -53% lifetimeAUM $14.0B · peak $15.0BFlow $172M (+1%)2016-062017-122019-062020-122022-062023-122025-062026-03
AUM ($B)fundS&P 500(gap = α)/ Flow in/out

Behavior signals (lifetime)

Dip response
-5.83%
trims when stocks drop
when a holding falls −10%+
Middle response
-5.30%
baseline attrition
Rally response
-7.19%
trims into rallies
when a holding rises +10%+

Top positions · 30

Ticker$ value% portYoYHold time
NVDANVIDIA Corporation$438M3.1%+60.9%9.3 yr
AAPLApple Inc.$414M3.0%+14.7%10.5 yr
GOOGLAlphabet Inc.$303M2.2%10.5 yr
MSFTMicrosoft Corporation$236M1.7%-0.6%10.5 yr
AVGOBroadcom Inc.$235M1.7%+86.0%8.3 yr
COSTCostco Wholesale Corpora$215M1.5%+5.9%10.5 yr
ANETArista Networks, Inc.$213M1.5%+58.5%1.5 yr
STRLSterling Infrastructure,$202M1.5%+259.7%3.0 yr
TJXThe TJX Companies, Inc.$192M1.4%+32.7%10.5 yr
AMZNAmazon.com, Inc.$188M1.3%+9.5%10.5 yr
HWMHowmet Aerospace Inc.$184M1.3%+78.1%2.0 yr
ETNEaton Corporation plc$180M1.3%+33.2%9.0 yr
METAMeta Platforms, Inc.$174M1.2%-0.4%10.3 yr
GEVGE Vernova Inc.$174M1.2%+186.8%0.5 yr
VVisa Inc.$170M1.2%-13.1%10.5 yr

Portfolio composition (YoY)

Industry mix
Semiconductors9.1%+3.7pp$1.27B
Software - Application5.7%-2.6pp$796M
Industrial - Machinery5.2%+0.8pp$732M
Engineering & Construction4.8%+2.9pp$675M
Aerospace & Defense4.8%+1.6pp$665M
Software - Infrastructure4.5%-2.1pp$623M
Medical - Devices4.5%-2.4pp$622M
Internet Content & Information3.6%+0.7pp$498M
Specialty Retail3.3%-0.6pp$455M
Biotechnology3.1%+0.4pp$436M
Country
US92.8%-1.0pp
IE1.7%+0.2pp
GB1.7%+0.9pp
CA1.2%-0.1pp
NL0.8%+0.7pp
IL0.7%-0.5pp
Unknown0.7%+0.7pp
CH0.2%-0.6pp
Top 5: 11.7% · Top 10: 18.9% · Top 25: 35.6%

Winners

TickerPrev $PnLYoY %
NVDA$289M+0.18B60.9%
STRL$60M+0.16B259.7%
CW$130M+0.15B115.0%
HWM$167M+0.13B78.1%
NVT$78M+0.10B127.9%

Losers

TickerPrev $PnLYoY %
V$206M-0.03B-13.1%
ISRG$155M-0.01B-6.9%
MSFT$248M-0.00B-0.6%
META$199M-0.00B-0.4%
ORLY$152M-0.00B-3.4%

Top buys this quarter · 15

HLT Hilton Worldwide Holdings Inc.new+$107M
ASML ASML Holding N.V.+$92M
LLY Eli Lilly and Company+$83M
LIVN LivaNova PLCnew+$81M
IBKR Interactive Brokers Group, Inc+$58M
IMAX IMAX Corporationnew+$57M
MDB MongoDB, Inc.+$49M
FROG JFrog Ltd.new+$48M
Q Qnity Electronics, Inc.new+$39M
TKO TKO Group Holdings, Inc.+$36M

Top sells this quarter · 15

DELL Dell Technologies Inc.$155M
NFLX Netflix, Inc.$110M
SNPS Synopsys, Inc.$96M
PANW Palo Alto Networks, Inc.$87M
GS The Goldman Sachs Group, Inc.$57M
TILE Interface, Inc.$52M
KNF Knife River Corporation$50M
GRMN Garmin Ltd.$44M
BOX Box, Inc.$44M
P Everpure, Inc.$42M

Quarterly history (TTM returns)

PeriodAUM# PosReturn (1yr)SPY (1yr)Alpha (1yr)Flow
2026-03-31$13.95B417+12.31%+17.59%-5.28%+0.17B
2025-12-31$14.21B381+8.75%+17.72%-8.97%-0.38B
2025-09-30$15.03B392+12.98%+17.52%-4.53%-0.41B
2025-06-30$14.58B382+12.08%+14.94%-2.86%-0.48B
2025-03-31$13.37B365-1.01%+8.30%-9.31%-0.53B
2024-12-31$14.80B386+14.53%+24.89%-10.36%+0.01B
2024-09-30$14.67B357+26.30%+36.04%-9.73%+0.01B
2024-06-30$13.95B364+15.78%+24.49%-8.71%+0.00B
2024-03-31$14.02B357+24.69%+29.62%-4.93%+0.22B
2023-12-31$12.70B371+24.38%+26.18%-1.80%+0.13B
2023-09-30$11.31B374+20.20%+21.57%-1.36%+0.22B
2023-06-30$11.51B372+20.79%+19.42%+1.37%+0.01B
2023-03-31$10.73B368-5.81%-7.82%+2.01%-0.08B
2022-12-31$9.97B375-17.11%-18.17%+1.06%-0.05B
2022-09-30$9.33B365-14.34%-15.51%+1.17%-0.78B
2022-06-30$10.45B366-10.96%-10.62%-0.34%+0.62B