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Super Investors CONGRESS ASSET MANAGEMENT CO
CA

CONGRESS ASSET MANAGEMENT CO

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

Portfolio value
$15.4B
Positions
406
Quarter ended
September 30, 2026
Filed
October 06, 2026

Reported portfolio value by quarter (54 quarters reported)

$16.3B $3.37B
Q2 13 Q1 16 Q4 18 Q3 21 Q2 24 Q3 26

$3.37B in Q2 2013 → $15.4B now. Hover for any quarter.

Holdings

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

Holding % of portfolio Activity Shares Value
Nvidia Corp. 3.8% Trimmed 2.2% 2,571,429 $587M
Apple Inc. 3.4% Trimmed 1.0% 1,594,177 $531M
Alphabet Inc. 2.8% Added 21% 1,235,195 $425M
Microsoft Corp. 2.7% Trimmed 1.7% 801,234 $411M
Broadcom Inc 1.9% Added 11% 821,013 $288M
Halozyme Therapeutics Inc 1.6% Added 86% 2,281,615 $252M
Arista Networks Inc 1.4% Trimmed 11% 1,049,467 $214M
Ligand Pharmaceuticals Incorporated 1.3% Trimmed 0.2% 658,556 $206M
Meta Platforms Inc 1.3% Trimmed 3.9% 280,895 $204M
Repligen Corporation 1.3% Added 0.9% 1,020,907 $196M
Visa Inc 1.2% Trimmed 21% 522,219 $188M
Amazon.com, Inc. 1.2% Added 1.0% 741,049 $185M
Costco Wholesale Corporation 1.2% Trimmed 3.7% 201,044 $183M
Amphenol Corporation 1.2% Added 76% 2,147,483 $181M
Mongodb Inc. 1.1% Trimmed 1.7% 502,346 $175M
Ufp Technologies Inc. 1.1% Trimmed 16% 578,770 $172M
Eaton Corporation PLC 1.1% Trimmed 4.6% 393,986 $169M
AH Asml Holding N.v. 1.1% Added 1.5% 89,548 $162M
Welltower Inc. 1.0% Trimmed 3.4% 696,783 $160M
Moog Inc. 1.0% Trimmed 0.6% 403,781 $154M
Ge Vernova Inc. 1.0% Trimmed 18% 158,328 $150M
Interdigital, Inc. 1.0% Added 8.7% 458,053 $149M
Tg Therapeutics Inc 0.9% Added 0.2% 2,606,516 $145M
EL Eli Lilly & Co. 0.9% Added 1.2% 124,514 $144M
Parker-hannifin Corp. 0.9% Trimmed 4.4% 146,145 $140M
Novanta Inc 0.9% Added 0.6% 979,842 $139M
Imax Corporation 0.9% Added 0.2% 2,541,756 $139M
Jfrog Ltd 0.9% Added 14% 1,420,301 $138M
Howmet Aerospace Inc 0.9% Trimmed 4.2% 596,554 $135M
Enpro Inc 0.9% Trimmed 0.5% 430,984 $132M
Brinker International, Inc. 0.8% Trimmed 2.0% 671,777 $130M
Interactive Brokers Group Inc 0.8% Trimmed 1.7% 1,502,435 $128M
Goldman Sachs Group, Inc. 0.8% Trimmed 23% 140,701 $127M
Micron Technology Inc. 0.8% Added 99% 118,460 $126M
The Tjx Companies Inc. 0.8% Added 2.0% 943,136 $125M
Sensient Technologies Corp 0.8% Added 0.2% 932,079 $122M
Ecolab Inc. 0.8% Trimmed 4.4% 434,723 $119M
Commvault Systems Inc. 0.8% Trimmed 15% 783,667 $117M
Livanova PLC 0.7% Added 0.0% 1,502,802 $115M
WC Williams Companies Inc. (the) 0.7% Trimmed 4.0% 1,678,477 $114M
Arm Holdings PLC 0.7% Trimmed 4.9% 389,126 $113M
Merit Medical Systems Inc. 0.7% Added 6.4% 1,260,675 $109M
Shopify Inc 0.7% Trimmed 4.4% 730,843 $108M
Champion Homes Inc. 0.7% Added 0.8% 1,222,557 $105M
Hilton Worldwide Holdings Inc 0.7% Trimmed 4.8% 328,708 $105M
Pjt Partners Inc. 0.7% Added 0.7% 728,580 $104M
Vericel Corporation 0.7% Trimmed 12% 2,552,066 $102M
Nvent Electric PLC 0.7% Trimmed 36% 626,243 $100M
Monolithic Power Systems Inc. 0.6% Trimmed 7.5% 74,381 $100M
Kirby Corp 0.6% Added 8.2% 761,099 $99.9M
Federal Signal Corp. 0.6% Added 23% 894,846 $99.1M
Boot Barn Holdings Inc 0.6% Added 0.9% 804,659 $96.9M
Atlantic Union Bankshares Corp 0.6% Added 1.2% 2,531,692 $96.1M
Ameris Bancorp 0.6% Added 0.9% 1,202,889 $95.7M
Palantir Technologies Inc 0.6% Trimmed 1.2% 506,678 $94.8M
Texas Instruments Inc. 0.6% Added 27% 335,540 $94M
Crowdstrike Holdings Inc 0.6% New 351,357 $93M
Idexx Laboratories Inc. 0.6% Trimmed 7.7% 175,592 $91.7M
Veracyte Inc 0.6% New 1,954,198 $90M
M Moodys Corp. 0.6% Trimmed 5.0% 195,064 $88.6M

Showing top 60 of 406 positions.

Timeline of changes

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

Q3 2026

quarter ended September 30, 2026 · filed October 06, 2026

Company Action Shares changed Value of change % of portfolio
Universal Technical Institute, Inc. Exited −3,000,595 −$128M —
Kulicke And Soffa Industries, Inc. Exited −878,002 −$117M —
Modine Manufacturing Co. Trimmed −623,785 −$117M —
Halozyme Therapeutics Inc Added +1,052,509 +$116M 1.6%
Intuitive Surgical Inc. Trimmed −267,849 −$109M 0.1%
O'reilly Automotive Inc. Trimmed −1,198,825 −$102M 0.2%
Tko Group Holdings Inc. Trimmed −545,606 −$98.1M 0.2%
Crowdstrike Holdings Inc New +351,357 +$93M 0.6%
Uber Technologies Inc Trimmed −1,337,535 −$91.6M —
Veracyte Inc New +1,954,198 +$90M 0.6%

Showing the 10 largest of 408 changes.

Q2 2026

quarter ended June 30, 2026 · filed July 07, 2026

Company Action Shares changed Value of change % of portfolio
Sterling Infrastructure Inc Trimmed −266,686 −$224M 1.2%
Arm Holdings PLC New +409,049 +$145M 0.9%
Kulicke And Soffa Industries, Inc. New +878,002 +$117M 0.7%
Martin Marietta Materials Inc Trimmed −177,021 −$102M 0.2%
Mirion Technologies Inc Added +5,571,373 +$99.9M 0.7%
Penumbra Inc. Trimmed −305,146 −$96.3M —
Thermo Fisher Scientific Inc Trimmed −191,813 −$96.2M —
Arista Networks Inc Trimmed −556,248 −$94.5M 1.2%
Archrock Inc New +2,213,208 +$90.1M 0.6%
Primoris Services Corp. Trimmed −812,154 −$80.5M —

Showing the 10 largest of 436 changes.

Q1 2026

quarter ended March 31, 2026 · filed April 14, 2026

Company Action Shares changed Value of change % of portfolio
Dell Technologies Inc Trimmed −942,212 −$155M 0.2%
Netflix, Inc. Trimmed −1,145,926 −$110M 0.2%
Hilton Worldwide Holdings Inc New +352,636 +$107M 0.8%
Synopsys Inc Trimmed −241,449 −$95.7M 0.1%
AH Asml Holding N.v. Added +69,686 +$92M 0.8%
Palo Alto Networks Inc Trimmed −540,506 −$86.6M —
EL Eli Lilly & Co. Added +90,285 +$83M 0.7%
Livanova PLC New +1,274,820 +$81M 0.6%
Cyberark Software Ltd. Exited −133,851 −$59.7M —
Interactive Brokers Group Inc Added +867,934 +$58.2M 0.5%

Showing the 10 largest of 423 changes.

Q4 2025

quarter ended December 31, 2025 · filed January 09, 2026

Company Action Shares changed Value of change % of portfolio
Ge Vernova Inc. New +191,662 +$125M 0.9%
Netflix, Inc. Added +1,241,124 +$116M 0.9%
Cintas Corporation Trimmed −571,241 −$107M 0.3%
Home Depot Inc. Trimmed −299,862 −$103M 0.2%
Idexx Laboratories Inc. Added +152,368 +$103M 0.7%
Servicenow Inc Added +672,898 +$103M 0.9%
GA Gallagher Aj &CO Trimmed −392,825 −$102M —
Motorola Solutions Inc Trimmed −230,661 −$88.4M 0.1%
Repligen Corporation Added +527,714 +$86.5M 0.9%
Brinker International, Inc. New +561,025 +$80.5M 0.6%

Showing the 10 largest of 387 changes.

Q3 2025

quarter ended September 30, 2025 · filed October 10, 2025

Company Action Shares changed Value of change % of portfolio
Chipotle Mexican Grill Inc Exited −1,906,169 −$107M —
Amphenol Corporation Added +679,617 +$84.1M 0.8%
E L F Beauty Inc Trimmed −594,760 −$78.8M 0.3%
Tapestry Inc New +687,164 +$77.8M 0.5%
Us Foods Holding Corp Trimmed −984,512 −$75.4M —
The Trade Desk Inc Trimmed −1,448,081 −$71M —
Cargurus Inc New +1,903,207 +$70.9M 0.5%
Deckers Outdoor Corp. Trimmed −695,183 −$70.5M —
Dexcom Inc Trimmed −1,038,862 −$69.9M —
Aptargroup Inc. Trimmed −510,857 −$68.3M —

Showing the 10 largest of 396 changes.

Q2 2025

quarter ended June 30, 2025 · filed July 16, 2025

Company Action Shares changed Value of change % of portfolio
EL Eli Lilly & Co. Trimmed −180,874 −$141M 0.1%
O'reilly Automotive Inc. Added +1,474,068 +$133M 1.0%
Resmed Inc. Trimmed −484,773 −$125M —
Teledyne Technologies Inc Trimmed −208,838 −$107M —
Baker Hughes Company Trimmed −2,482,700 −$95.2M 0.1%
Encompass Health Corporation New +755,862 +$92.7M 0.6%
Copart Inc Trimmed −1,824,004 −$89.5M 0.1%
WO Welltower Op LLC New +578,845 +$89M 0.6%
Motorola Solutions Inc New +207,302 +$87.2M 0.6%
Stride Inc Trimmed −583,033 −$84.7M 0.6%

Showing the 10 largest of 388 changes.

Q1 2025

quarter ended March 31, 2025 · filed April 11, 2025

Company Action Shares changed Value of change % of portfolio
Intuit Inc Trimmed −200,704 −$123M 0.1%
SW Sherwin Williams Co Com Trimmed −345,139 −$121M 0.1%
TT Take Two Interactive Trimmed −573,313 −$119M —
Valvoline Inc Trimmed −3,409,075 −$119M —
WC Williams Cos Inc Com New +1,885,978 +$113M 0.8%
C& Church & Dwight Co Inc Com Trimmed −993,670 −$109M —
Watts Water Technologies Inc Trimmed −519,178 −$106M —
FR Factset Reasearch Systems Inc Trimmed −229,107 −$104M —
UT Uber Technologies Inc Com New +1,364,246 +$99.4M 0.7%
NS Nxp Semiconductors N V Com Trimmed −515,836 −$98M —

Showing the 10 largest of 396 changes.

Q4 2024

quarter ended December 31, 2024 · filed January 30, 2025

Company Action Shares changed Value of change % of portfolio
AN Arista Networks Inc Com New +1,838,991 +$203M 1.4%
AN Arista Networks Inc Com Exited −459,704 −$176M —
OB Ollies Bargain Outlt Hldgs Inc Added +1,235,994 +$136M 1.4%
GC Godaddy Inc Class A New +567,070 +$112M 0.8%
BH Baker Hughes Company Cl A New +2,612,270 +$107M 0.7%
Fabrinet Trimmed −481,568 −$106M —
DC Dexcom Inc Com Added +1,332,522 +$104M 0.7%
Dell Technologies Inc New +875,297 +$101M 0.7%
Onto Innovation Inc Trimmed −584,616 −$97.4M 0.5%
PC Pool Corp Com Trimmed −281,572 −$96M 0.1%

Showing the 10 largest of 386 changes.

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