CONGRESS ASSET MANAGEMENT CO

View all activity View 13F on SEC

Data as of Q4 2025

Institutional investor tracked via SEC 13F filings. Portfolio snapshot as of 2025-12-31.SEC EDGAR Source

Assets Under Management

$14.2B

Total Positions

381

New This Quarter

Filing Period

2025-12-31

Portfolio Allocation

Top holdings by portfolio weight

NVDA3.33%

AAPL3.14%

GOOGL2.35%

MSFT2.19%

AVGO1.78%

ANET1.62%

GS1.59%

AMZN1.47%

META1.42%

V1.40%

Other16.33%

Position Outcomes

Best and worst performing positions by estimated return

Top Winners

FIX16Q held

Comfort Systems USA Inc

Avg $148.30 · $65.8M est. P&L

Est. P&L

+538.54%

HL28Q held

Hecla Mining Co

Avg $3.28 · $12M est. P&L

Est. P&L

+495.07%

MPWR28Q held

Monolithic Power Systems Inc

Avg $166.67 · $68.5M est. P&L

Est. P&L

+453.40%

Top Losers

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Cost basis estimates based on full filing history using quarter-end prices. Actual transaction prices are not disclosed in 13F filings.

Top Holdings(Showing 25 of 381 — sorted by value)

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Activity:

Stock	Shares	Value	Weight	Price Trend	Avg Buy	Est. P&L	Held	Conviction
NVDA NVIDIA Corp	2.5M	$473.2M	3.3%	—	$110.86	+69.17%	19 qtrs	Decreased 0
AAPL Apple Inc	1.6M	$446.8M	3.1%	—	$125.26	+117.81%	28 qtrs	Increased 66
GOOGL Alphabet Inc	1.1M	$333.8M	2.3%	—	$103.54	+203.12%	28 qtrs	Decreased 0
MSFT Microsoft Corp	643,106	$311M	2.2%	—	$165.13	+195.20%	28 qtrs	Decreased 0
AVGO Broadcom Inc	731,350	$253.1M	1.8%	—	$186.96	+87.12%	28 qtrs	Decreased 0
ANET Arista Networks Inc	1.8M	$230.4M	1.6%	—	$111.45	+18.83%	5 qtrs	Decreased 0
GS Goldman Sachs Group Inc/The	256,315	$225.3M	1.6%	—	$467.65	+89.12%	16 qtrs	Decreased 0
AMZN Amazon.com Inc	907,302	$209.4M	1.5%	—	$112.27	+107.12%	28 qtrs	Decreased 0
META Meta Platforms Inc	305,525	$201.7M	1.4%	—	$377.06	+76.62%	12 qtrs	Decreased 0
V Visa Inc	567,708	$199.1M	1.4%	—	$164.40	+114.66%	28 qtrs	Decreased 0
TJX TJX Cos Inc/The	1.2M	$187.9M	1.3%	—	$94.52	+63.89%	28 qtrs	Decreased 0
COST Costco Wholesale Corp	217,475	$187.5M	1.3%	—	$281.92	+206.64%	28 qtrs	Decreased 0
ISRG Intuitive Surgical Inc	314,531	$178.1M	1.3%	—	$282.78	+102.50%	13 qtrs	Decreased 0
HWM Howmet Aerospace Inc	806,017	$165.2M	1.2%	—	$78.42	+164.85%	7 qtrs	Decreased 0
PH Parker-Hannifin Corp	186,361	$163.8M	1.2%	—	$542.88	+63.42%	9 qtrs	Decreased 0
ETN Eaton Corp PLC	508,130	$161.8M	1.1%	—	$157.75	+103.39%	21 qtrs	Decreased 0
BSX Boston Scientific Corp	1.6M	$157.3M	1.1%	—	$56.38	+70.29%	13 qtrs	Decreased 0
MLM Martin Marietta Materials Inc	239,634	$149.2M	1.1%	—	$394.69	+59.98%	23 qtrs	Decreased 0
CW Curtiss-Wright Corp	269,885	$148.8M	1.0%	—	$294.72	+89.53%	16 qtrs	Decreased 0
STRL Sterling Infrastructure Inc	469,200	$143.7M	1.0%	—	$78.75	+290.70%	11 qtrs	Decreased 0
ORLY O'Reilly Automotive Inc	1.5M	$140.2M	1.0%	—	$86.61	+5.61%	21 qtrs	Decreased 0
WELL Welltower Inc	753,330	$139.8M	1.0%	—	$159.31	+18.01%	3 qtrs	Increased 53
DELL Dell Technologies Inc	1.1M	$137M	1.0%	—	$114.73	+11.01%	5 qtrs	Decreased 0
APH Amphenol Corp	962,561	$130.1M	0.9%	—	$98.60	+38.14%	28 qtrs	Decreased 0
NOW ServiceNow Inc	847,477	$129.8M	0.9%	—	$145.94	+5.68%	18 qtrs	Increased 69
Showing 25 of 381 results.PROUpgrade to see all →

Accumulation Streaks

Positions with 2+ consecutive quarters of increases — persistent directional conviction.

Security

NFLXNetflix Inc

Q1 2024 → Q4 2025+1.4M shares+$120.9M

RGENRepligen Corp

Q1 2024 → Q4 2025+669,506 shares+$108.5M

CDWCDW Corp/DE

Q1 2024 → Q4 2025+78,513 shares+$7.4M

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Data sourced from SEC EDGAR 13F filings. Not financial advice. Full disclaimer