CONGRESS ASSET MANAGEMENT CO — 13F Holdings & Portfolio
CIK 897378 · latest 13F-HR filed 2026-07-07
CONGRESS ASSET MANAGEMENT CO manages $16.25B in 13F-reported U.S. long-equity assets across 376 reported positions as of its 2026-06-30 13F-HR filing. Its largest disclosed positions are NVDA (3.24%), AAPL (2.87%), GOOGL (2.24%). Quarter over quarter (versus its 2026-03-31 filing) the fund opened 32 new positions, exited 73, added to 181, and trimmed 107.
AUM is the long-equity portion reported on Form 13F-HR. Excludes short positions, cash, foreign holdings, and non-13F assets. For informational purposes only — not investment advice.
5TH FLOOR
BOSTON, MA 02210
$16.25B
Long-equity book
376
Distinct positions
2026-06-30
Filed 2026-07-07
+32 / −73 / ↑181 / ↓107
vs 2026-03-31
| Name | Title / Status | Ownership | Type |
|---|
Top Adds (vs prior quarter)
- Ligand Pharmaceuticals Incorporated$107.8M +107.0%
- Mirion Technologies Inc$99.2M +478.8%
- MongoDB Inc.$97.8M +132.4%
- Amphenol Corporation$93.0M +76.1%
- Credo Technology Group Holding Ltd$91.1M +271.1%
Top Trims
- Primoris Services Corp.-$116.4M -99.5%
- Martin Marietta Materials Inc-$104.9M -74.9%
- Boston Scientific Corporation-$101.8M -99.6%
- Penumbra Inc.-$100.4M -96.3%
- Thermo Fisher Scientific Inc-$94.2M -95.7%
New Positions
- Arm Holdings PLC$145.0M
- Kulicke and Soffa Industries, Inc.$117.4M
- Archrock Inc$90.1M
- The Vita Coco Company Inc$79.8M
- Power Integrations Inc.$77.9M
Exited Positions
- Dynatrace Inc$66.9M
- Houlihan Lokey Inc.$33.5M
- Guidewire Software Inc$30.3M
- Prestige Consumer Healthcare Inc$26.7M
- PTC Inc$24.6M
Rows tagged Call or Put are options positions, not stock. Per SEC Form 13F-HR, Value shows the notional value of the underlying (shares covered × underlying price), not the option premium. Shares is the number of underlying shares covered (divide by 100 for contract count).
| # | Issuer | Symbol | CUSIP | Value | Weight | Shares | Type |
|---|---|---|---|---|---|---|---|
| 1 | NVIDIA Corp. | NVDA | 67066G104 | $525.8M | 3.24% | 2,627,947 | SH |
| 2 | Apple Inc. | AAPL | 037833100 | $465.8M | 2.87% | 1,609,746 | SH |
| 3 | Alphabet Inc. | GOOGL | 02079K305 | $364.6M | 2.24% | 1,020,191 | SH |
| 4 | Microsoft Corp. | MSFT | 594918104 | $304.1M | 1.87% | 815,323 | SH |
| 5 | Broadcom Inc | AVGO | 11135F101 | $278.9M | 1.72% | 738,306 | SH |
| 6 | Visa Inc | V | 92826C839 | $227.6M | 1.40% | 663,519 | SH |
| 7 | GE Vernova Inc. | GEV | 36828A101 | $226.4M | 1.39% | 192,672 | SH |
| 8 | Amphenol Corporation | APH | 032095101 | $215.3M | 1.32% | 1,220,821 | SH |
| 9 | Ligand Pharmaceuticals Incorporated | LGND | 53220K504 | $208.6M | 1.28% | 659,911 | SH |
| 10 | Arista Networks Inc | ANET | 040413205 | $199.9M | 1.23% | 1,176,606 | SH |
| 11 | Costco Wholesale Corporation | COST | 22160K105 | $195.4M | 1.20% | 208,851 | SH |
| 12 | Sterling Infrastructure Inc | STRL | 859241101 | $193.4M | 1.19% | 230,412 | SH |
| 13 | Goldman Sachs Group, Inc. | GS | 38141G104 | $184.2M | 1.13% | 182,093 | SH |
| 14 | UFP Technologies Inc. | UFPT | 902673102 | $182.3M | 1.12% | 687,439 | SH |
| 15 | Eaton Corporation PLC | ETN | G29183103 | $176.0M | 1.08% | 413,077 | SH |
| 16 | ASML Holding N.V. | ASML | N07059210 | $175.6M | 1.08% | 88,265 | SH |
| 17 | Amazon.com, Inc. | AMZN | 023135106 | $174.9M | 1.08% | 733,843 | SH |
| 18 | Moog Inc. | MOG.A | 615394202 | $172.2M | 1.06% | 406,324 | SH |
| 19 | MongoDB Inc. | MDB | 60937P106 | $171.7M | 1.06% | 511,227 | SH |
| 20 | Modine Manufacturing Co. | MOD | 607828100 | $168.0M | 1.03% | 629,268 | SH |
| 21 | Howmet Aerospace Inc | HWM | 443201108 | $167.4M | 1.03% | 622,443 | SH |
| 22 | NVent Electric PLC | NVT | G6700G107 | $166.9M | 1.03% | 983,875 | SH |
| 23 | Meta Platforms Inc | META | 30303M102 | $164.6M | 1.01% | 292,203 | SH |
| 24 | Welltower Inc. | WELL | 95040Q104 | $163.8M | 1.01% | 721,601 | SH |
| 25 | Enpro Inc | NPO | 29355X107 | $163.3M | 1.00% | 433,112 | SH |
| 26 | Novanta Inc | NOVT | 67000B104 | $158.0M | 0.97% | 973,767 | SH |
| 27 | Curtiss-Wright Corp. | CW | 231561101 | $150.6M | 0.93% | 198,758 | SH |
| 28 | Parker-Hannifin Corp. | PH | 701094104 | $149.5M | 0.92% | 152,862 | SH |
| 29 | Eli Lilly & Co. | LLY | 532457108 | $147.6M | 0.91% | 123,060 | SH |
| 30 | Arm Holdings PLC | ARM | 042068205 | $145.0M | 0.89% | 409,049 | SH |
| 31 | TG Therapeutics Inc | TGTX | 88322Q108 | $142.9M | 0.88% | 2,600,123 | SH |
| 32 | TKO Group Holdings Inc. | TKO | 87256C101 | $142.3M | 0.88% | 706,691 | SH |
| 33 | The TJX Companies Inc. | TJX | 872540109 | $140.1M | 0.86% | 924,463 | SH |
| 34 | Repligen Corporation | RGEN | 759916109 | $138.1M | 0.85% | 1,012,226 | SH |
| 35 | O'Reilly Automotive Inc. | ORLY | 67103H107 | $135.4M | 0.83% | 1,470,148 | SH |
| 36 | Interactive Brokers Group Inc | IBKR | 45841N107 | $133.0M | 0.82% | 1,527,739 | SH |
| 37 | Boot Barn Holdings Inc | BOOT | 099406100 | $131.0M | 0.81% | 797,619 | SH |
| 38 | Commvault Systems Inc. | CVLT | 204166102 | $130.8M | 0.81% | 923,066 | SH |
| 39 | Williams Companies Inc. (The) | WMB | 969457100 | $129.9M | 0.80% | 1,747,896 | SH |
| 40 | Vericel Corporation | VCEL | 92346J108 | $129.7M | 0.80% | 2,916,295 | SH |
| 41 | Universal Technical Institute, Inc. | UTI | 913915104 | $128.3M | 0.79% | 3,000,595 | SH |
| 42 | Ecolab Inc. | ECL | 278865100 | $126.8M | 0.78% | 454,964 | SH |
| 43 | Credo Technology Group Holding Ltd | CRDO | G25457105 | $124.7M | 0.77% | 458,375 | SH |
| 44 | LivaNova PLC | LIVN | G5509L101 | $123.5M | 0.76% | 1,502,244 | SH |
| 45 | Mirion Technologies Inc | MIR | 60471A101 | $119.9M | 0.74% | 6,685,434 | SH |
| 46 | Intuitive Surgical Inc. | ISRG | 46120E602 | $119.7M | 0.74% | 300,950 | SH |
| 47 | InterDigital, Inc. | IDCC | 45867G101 | $119.3M | 0.73% | 421,433 | SH |
| 48 | Quanta Services, Inc. | PWR | 74762E102 | $117.6M | 0.72% | 163,336 | SH |
| 49 | Kulicke and Soffa Industries, Inc. | KLIC | 501242101 | $117.4M | 0.72% | 878,002 | SH |
| 50 | Brinker International, Inc. | EAT | 109641100 | $115.1M | 0.71% | 685,348 | SH |
| Period | Filed | AUM | Holdings | Accession |
|---|---|---|---|---|
| 2026-06-30 | 2026-07-07 | $16.25B | 376 | 0000897378-26-000010 |
| 2026-03-31 | 2026-04-14 | $13.95B | 417 | 0000897378-26-000005 |
| 2025-12-31 | 2026-01-09 | $14.21B | 381 | 0000897378-26-000002 |