CONGRESS ASSET MANAGEMENT CO

Registered adviser

CIK

897378

Location

BOSTON, MA

Portfolio Value

Large $15,362,951,318

Diversification

Diversified

Filing Date

Global Rank

#397 / 8,818 ▼ 4 · as of Jun 2026

Top Industry

Semiconductors 9.7%

Period ended 28 days ago

Filed Oct 6, 2026 · 22d

27 quarters · since Mar 2020

Regulatory profile

From Form ADV, the SEC filer profile, 13D/13G type codes and N-CEN, never from the name.

Holder type

Registered adviser

Form ADV roster, Oct 1, 2026

Form ADV adviser

CRD 105161

Roster of Oct 1, 2026

Regulatory AUM

$14,199,956,103

Main clients

Diversified

Registered funds advised

6 series (0 index, 3 ETFs)

$3,675,555,888 net assets· N-CEN Oct 31, 2025

LEI

254900NRTR7IJUDC9802

Form ADV history

Monthly rosters from Dec 2019; each row is a run with the same figures, newest first.

Rosters	Regulatory AUM	Main clients
Apr 2026 to Oct 2026	$14,199,956,103	Diversified
Apr 2025 to Mar 2026	$14,186,740,344	Diversified
Apr 2024 to Mar 2025	$12,146,933,847	Diversified
May 2023 to Mar 2024	$10,099,098,612	Diversified
Apr 2023	$10,099,098,612	Diversified
Apr 2022 to Mar 2023	$12,778,355,426	Diversified

3 earlier changes not shown.

Portfolio style

Measured from the filed 13F common-share book for Jun 30, 2026, the newest measured quarter, never from the firm's own description.

Style

Diversified active

Top 10 weight 18.8%, 109.5 effective positions, active share 71.8% against the Russell 1000 as of 2026-06-30; it meets none of the index-like, systematic-like or concentrated tests

Turnover

Medium turnover

41.0% over the last four quarters (30% to under 100%)

Horizon

Long horizon

Value-weighted holding period 13.9 quarters (12+), a floor since 25.9% of the book was already held when coverage starts

Closest benchmark: the Russell 1000 as of 2026-06-30, active share 71.8%; sector active share 19.3% against the combined 13F book's sector weights.

Over time 26 measured quarters

How the bands are measured

Style bands measure the filed 13F common-share book each closed quarter, tested in this order. Unknown: under $10,000,000 of valued equity or 5 stocks. Index-like (100+ stocks): active share of 20% or less against the closest benchmark, which is the S&P 500, S&P MidCap 400, S&P SmallCap 600, Russell 1000, Russell 2000, Nasdaq-100 or Dow Jones Industrial Average (weighted by an index-tracking fund's reported holdings or the index's constituents nearest the quarter end, over the names resolved to companies, and only when those are 90%+ of its weight) or every 13F filer's combined book, or index series holding 80%+ of the registered fund assets it advises (N-CEN) and equal to 50%+ of its book. Systematic-like: 500+ stocks, 100%+ annual turnover and a top 10 weight of 25% or less. Concentrated: a top 10 weight of 60%+ or 12 or fewer effective positions. Diversified active: none of these. Turnover is the smaller of buys and sells over average equity value, summed over four quarters: low under 30%, high 100%+. Horizon is the value-weighted number of quarters each position has been held: short under 4, long 12+.

Clone Performance

Build a hypothetical price-return history from this filer's public 13F holdings.

View clone backtest

Portfolio Concentration

399 tracked positions · as of Sep 30, 2026 · Δ vs Jun 30, 2026

Top Position

3.8%

+0.6 pts

Top 5

14.8%

+2.7 pts

Top 10

21.7%

+3.0 pts

HHI

102

Diversified+11

Portfolio Trend

27 quarters · across all stocks

Sector Breakdown

As of Sep 30, 2026

Sector	% Portfolio	Value	Positions
Technology	34.3%	$5,263,481,969	83
Industrials	16.7%	$2,568,772,080	54
Healthcare	14.4%	$2,218,304,978	50
Consumer Cyclical	8.5%	$1,306,160,799	38
Financial Services	8.4%	$1,295,193,196	45
Communication Services	6.4%	$986,692,986	11
Basic Materials	3.0%	$462,282,386	14
Consumer Defensive	2.6%	$400,023,124	15
Energy	2.5%	$381,164,691	18
Real Estate	2.1%	$319,820,895	12
Unclassified	0.5%	$84,043,012	51
Utilities	0.5%	$77,011,202	8

Last Quarter's Activity

Export CSV

Sep 30, 2026 vs Jun 30, 2026

Added To

Positions the filer increased

25 positions

Ticker	Company	Δ Shares	Shares	Value
HALO	Halozyme Therapeutics, Inc.	+1,052,509	2,281,615	$251,890,296
APH	Amphenol Corp	+926,662	2,147,483	$181,032,816
AMRX	Amneal Pharmaceuticals, Inc.	+741,577	1,524,355	$30,700,509
TOST	Toast, Inc.	+555,568	1,755,072	$50,879,537
RES	Rpc Inc	+343,601	1,924,866	$10,836,995
AROC	Archrock, Inc.	+319,256	2,532,464	$76,708,334
NOMD	Nomad Foods Ltd	+272,805	1,531,380	$15,819,155
CCCC	C4 Therapeutics, Inc.	+253,255	1,256,692	$4,184,784
GOOGL	Alphabet Inc.	+215,004	1,235,195	$425,005,895
IRT	Independence Realty Trust, Inc.	+214,192	1,216,370	$17,673,856
PLXS	Plexus Corp	+211,663	315,396	$82,302,586
BDN	Brandywine Realty Trust	+209,943	1,212,611	$3,395,310
LUMN	Lumen Technologies, Inc.	+209,416	1,191,427	$6,671,991
KRMN	Karman Holdings Inc.	+205,503	1,068,811	$34,650,852
TSLA	Tesla, Inc.	+204,745	206,310	$73,200,851
WLTH	Wealthfront Corp	+204,498	1,129,703	$11,726,317
FROG	JFrog Ltd	+178,310	1,420,301	$137,826,009
RBRK	Rubrik, Inc.	+175,866	715,550	$81,909,008
FSS	Federal Signal Corp	+168,708	894,846	$99,139,988
RLAY	Relay Therapeutics, Inc.	+153,403	779,544	$14,070,769
CARG	CarGurus, Inc.	+149,338	2,125,686	$66,236,375
MNST	Monster Beverage Corp	+145,749	295,807	$12,311,487
ACIW	Aci Worldwide, Inc.	+144,917	1,737,223	$84,915,460
KVYO	Klaviyo, Inc.	+138,430	774,660	$12,185,401
FNB	Fnb Corp	+123,921	699,366	$12,036,088
No positions match the current search.

Trimmed

Positions the filer reduced

25 positions

Ticker	Company	Δ Shares	Shares	Value
UBER	Uber Technologies, Inc	−1,337,535	4,291	$293,976
ORLY	O Reilly Automotive Inc	−1,198,825	271,323	$23,173,697
MQ	Marqeta, Inc.	−1,102,662	489,548	$8,319,868
VIK	Viking Holdings Ltd	−814,533	13,302	$1,041,945
MIR	Mirion Technologies, Inc.	−650,906	6,034,528	$85,207,535
MOD	Modine Manufacturing Co	−623,785	5,483	$1,026,417
TKO	TKO Group Holdings, Inc.	−545,606	161,085	$28,950,196
RMBS	Rambus Inc	−420,997	356,996	$38,112,892
OLLI	Ollie's Bargain Outlet Holdings, Inc.	−399,126	234,265	$20,064,797
VCEL	Vericel Corp	−364,229	2,552,066	$102,439,929
NVT	nVent Electric plc	−357,632	626,243	$100,430,589
CRDO	Credo Technology Group Holding Ltd	−329,838	128,537	$25,037,722
ACVA	ACV Auctions Inc.	−323,709	213,132	$2,222,966
ISRG	Intuitive Surgical Inc	−267,849	33,101	$13,459,859
COHR	Coherent Corp.	−189,137	1,645	$473,447
STRL	Sterling Infrastructure, Inc.	−163,144	67,268	$33,081,057
V	Visa Inc.	−141,300	522,219	$187,648,953
CVLT	Commvault Systems Inc	−139,399	783,667	$117,487,356
TRNO	Terreno Realty Corp	−131,956	474,049	$30,599,862
ANET	Arista Networks, Inc.	−127,139	1,049,467	$213,660,986
NVMI	Nova Ltd.	−125,718	2,192	$844,358
CAVA	Cava Group, Inc.	−120,258	378,086	$20,454,452
UFPT	Ufp Technologies Inc	−108,669	578,770	$171,790,511
—		−104,870	49,409	$0
IWF	iShares Russell 1000 Growth ETF	−90,800	59,239	$7,420,277
No positions match the current search.

New Positions

Positions the filer opened this quarter

25 positions

Ticker	Company	Shares	Value
CRWD	CrowdStrike Holdings, Inc.	351,357	$93,021,765
VCYT	Veracyte, Inc.	1,954,198	$89,971,275
YOU	Clear Secure, Inc.	1,879,457	$78,843,221
MDT	Medtronic plc	883,081	$76,201,059
LITE	Lumentum Holdings Inc.	71,116	$69,072,126
BELFB	Bel Fuse Inc	258,484	$63,101,114
MTRN	MATERION Corp	192,274	$51,835,147
VTR	Ventas, Inc.	502,287	$42,704,440
WSM	Williams Sonoma Inc	143,631	$32,739,250
RPRX	Royalty Pharma plc	527,094	$30,761,205
IQV	Iqvia Holdings Inc.	91,352	$24,559,985
MSGE	Madison Square Garden Entertainment Corp.	303,087	$24,280,299
CGNX	Cognex Corp	389,510	$23,623,781
SITM	SITIME Corp	32,002	$20,866,264
OTTR	Otter Tail Corp	165,683	$14,586,731
EQT	EQT Corp	183,195	$8,895,949
PBH	Prestige Consumer Healthcare Inc.	163,834	$7,515,065
FLXS	Flexsteel Industries Inc	80,615	$6,824,059
FDIS	Fidelity MSCI Consumer Discretionary Index ETF	67,763	$6,417,833
XLY	State Street(R) Consumer Discretionary Select Sector SPDR(R) ETF	50,880	$5,537,779
XLC	State Street(R) Communication Services Select Sector SPDR(R) ETF	33,791	$3,749,787
DHR	Danaher Corp	10,755	$2,382,770
SMH	VanEck Semiconductor ETF	3,912	$2,382,408
GE	General Electric Co	7,007	$2,188,216
AMT	American Tower Corp	12,715	$2,081,318
No positions match the current search.

Sold Out

Positions the filer fully exited

20 positions

Ticker	Company	Shares	Value
UTI	Universal Technical Institute Inc	3,000,595	$128,335,448
KLIC	Kulicke & Soffa Industries Inc	878,002	$117,441,547
ALNY	Alnylam Pharmaceuticals, Inc.	265,701	$79,983,972
DHI	Horton D R Inc	232,121	$37,807,868
CELH	Celsius Holdings, Inc.	476,163	$13,942,052
HE	Hawaiian Electric Industries Inc	996,265	$13,479,465
BWXT	BWX Technologies, Inc.	43,408	$8,449,367
PRIM	Primoris Services Corp	5,942	$588,971
TTWO	Take Two Interactive Software Inc	1,823	$455,713
VOT	VANGUARD MID-CAP GROWTH INDEX FUND	1,341	$410,748
HON	Honeywell International Inc	1,667	$373,241
CALX	Calix, Inc	8,898	$332,073
YETI	YETI Holdings, Inc.	6,470	$320,653
CPRT	Copart Inc	9,578	$270,003
COO	Cooper Companies, Inc.	3,688	$264,466
FLEX	Flex Ltd.	1,500	$243,105
SFM	Sprouts Farmers Market, Inc.	2,862	$242,067
SAIA	Saia Inc	571	$240,482
TSCO	Tractor Supply Co	6,906	$218,298
ODFL	Old Dominion Freight Line, Inc.	1,002	$217,033
No positions match the current search.

Portfolio Positions

Compact Export CSV View 13F filing

399 tracked positions · $15,362,951,318 total · filing declares 406 positions · $15,430,328,560 · as of Sep 30, 2026

All sectors Basic Materials Communication Services Consumer Cyclical Consumer Defensive Energy Financial Services Healthcare Industrials Real Estate Technology Utilities

Showing 1–50 of 399 positions by value · page 1 of 8

Ticker	Company	Type	Shares	Δ Shares	Value (USD)	% Δ Value	% of Portfolio
NVDA	Nvidia Corp Technology	Reduced	2,571,429	-56,518	$587,262,955	+11.7%	3.82%
AAPL	Apple Inc. Technology	Reduced	1,594,177	-15,569	$530,892,824	+14.0%	3.46%
GOOGL	Alphabet Inc. Communication Services	Added	1,235,195	+215,004	$425,005,895	+16.6%	2.77%
MSFT	Microsoft Corp Technology	Reduced	801,234	-14,089	$410,952,918	+35.1%	2.67%
AVGO	Broadcom Inc. Technology	Added	821,013	+82,707	$288,331,555	+3.4%	1.88%
HALO	Halozyme Therapeutics, Inc. Healthcare	Added	2,281,615	+1,052,509	$251,890,296	+161.8%	1.64%
ANET	Arista Networks, Inc. Technology	Reduced	1,049,467	-127,139	$213,660,986	+6.9%	1.39%
LGND	Ligand Pharmaceuticals Inc Healthcare	Reduced	658,556	-1,355	$205,713,137	−1.4%	1.34%
META	Meta Platforms, Inc. Communication Services	Reduced	280,895	-11,308	$203,699,436	+23.8%	1.33%
RGEN	Repligen Corp Healthcare	Added	1,020,907	+8,681	$196,248,952	+42.1%	1.28%
V	Visa Inc. Financial Services	Reduced	522,219	-141,300	$187,648,953	−17.6%	1.22%
AMZN	Amazon Com Inc Consumer Cyclical	Added	741,049	+7,206	$184,632,358	+5.6%	1.20%
COST	Costco Wholesale Corp Consumer Defensive	Reduced	201,044	-7,807	$183,018,394	−6.3%	1.19%
APH	Amphenol Corp Technology	Added	2,147,483	+926,662	$181,032,816	−15.9%	1.18%
MDB	MongoDB, Inc. Technology	Reduced	502,346	-8,881	$175,122,839	+2.0%	1.14%
UFPT	Ufp Technologies Inc Healthcare	Reduced	578,770	-108,669	$171,790,511	−5.7%	1.12%
ETN	Eaton Corp plc Industrials	Reduced	393,986	-19,091	$169,299,724	−3.8%	1.10%
ASML	Asml Holding NV Technology	Added	89,548	+1,283	$162,231,425	−7.6%	1.06%
WELL	Welltower Inc. Real Estate	Reduced	696,783	-24,818	$160,427,317	−2.0%	1.04%
MOG-A	Moog Inc. Industrials	Reduced	403,781	-2,543	$154,030,338	−10.6%	1.00%
GEV	GE Vernova Inc. Industrials	Reduced	158,328	-34,344	$150,489,180	−33.5%	0.98%
IDCC	InterDigital, Inc. Technology	Added	458,053	+36,620	$149,357,341	+25.2%	0.97%
TGTX	Tg Therapeutics, Inc. Healthcare	Added	2,606,516	+6,393	$145,391,462	+1.8%	0.95%
LLY	ELI LILLY & Co Healthcare	Added	124,514	+1,454	$144,072,659	−2.4%	0.94%
PH	Parker-Hannifin Corp Industrials	Reduced	146,145	-6,717	$139,629,855	−6.6%	0.91%
NOVT	Novanta Inc Technology	Added	979,842	+6,075	$139,323,733	−11.8%	0.91%
IMAX	Imax Corp Communication Services	Added	2,541,756	+4,466	$139,288,228	+37.7%	0.91%
FROG	JFrog Ltd Technology	Added	1,420,301	+178,310	$137,826,009	+22.1%	0.90%
HWM	Howmet Aerospace Inc. Industrials	Reduced	596,554	-25,889	$134,928,583	−19.4%	0.88%
NPO	Enpro Inc. Industrials	Reduced	430,984	-2,128	$131,993,159	−19.1%	0.86%
EAT	Brinker International, Inc Consumer Cyclical	Reduced	671,777	-13,571	$130,009,002	+12.9%	0.85%
IBKR	Interactive Brokers Group, Inc. Financial Services	Reduced	1,502,435	-25,304	$128,337,997	−3.5%	0.84%
GS	Goldman Sachs Group Inc Financial Services	Reduced	140,701	-41,392	$126,681,552	−31.2%	0.82%
MU	Micron Technology Inc Technology	Added	118,460	+58,922	$126,172,930	+83.6%	0.82%
TJX	Tjx Companies Inc Consumer Cyclical	Added	943,136	+18,673	$124,786,324	−10.9%	0.81%
SXT	Sensient Technologies Corp Basic Materials	Added	932,079	+1,740	$121,841,366	+6.2%	0.79%
ECL	Ecolab Inc. Basic Materials	Reduced	434,723	-20,241	$119,366,241	−5.8%	0.78%
CVLT	Commvault Systems Inc Technology	Reduced	783,667	-139,399	$117,487,356	−10.2%	0.76%
LIVN	LivaNova PLC Healthcare	Added	1,502,802	+558	$114,964,353	−6.9%	0.75%
WMB	Williams Companies, Inc. Energy	Reduced	1,678,477	-69,419	$114,086,081	−12.2%	0.74%
ARM	Arm Holdings PLC Technology	Reduced	389,126	-19,923	$112,714,237	−22.3%	0.73%
MMSI	Merit Medical Systems Inc Healthcare	Added	1,260,675	+76,338	$108,708,005	+32.4%	0.71%
SHOP	Shopify Inc. Technology	Reduced	730,843	-33,758	$108,384,016	+24.1%	0.71%
SKY	Champion Homes, Inc. Consumer Cyclical	Added	1,222,557	+9,597	$104,773,134	−2.0%	0.68%
HLT	Hilton Worldwide Holdings Inc. Consumer Cyclical	Reduced	328,708	-16,544	$104,568,588	−8.3%	0.68%
PJT	PJT Partners Inc. Financial Services	Added	728,580	+5,106	$103,975,651	−4.8%	0.68%
VCEL	Vericel Corp Healthcare	Reduced	2,552,066	-364,229	$102,439,929	−21.0%	0.67%
NVT	nVent Electric plc Industrials	Reduced	626,243	-357,632	$100,430,589	−39.8%	0.65%
MPWR	Monolithic Power Systems, Inc. Technology	Reduced	74,381	-6,044	$100,207,570	−9.9%	0.65%
KEX	Kirby Corp Industrials	Added	761,099	+57,371	$99,894,243	+4.4%	0.65%

Showing the top 50 of 399 positions. Create a free account to see every position, past quarters, search, filters and CSV export.

Covers the securities this platform tracks: U.S.-listed common stock and the put/call positions reported on it. A 13F can also report security types outside that coverage — preferred shares, bonds, warrants, untracked share classes — so the filing's own declared total can exceed the figures above. The source filing is linked at the top of this table.