William Blair Investment Management, LLC

Name: WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC 13F holdings, Q2 2025
Creator: WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC
Published: 2025-07-29

Q2 2026Q1 2026Q4 2025Q3 2025Q1 2025Q4 2024Q3 2024Q2 2024Q1 2024

In its 13F for Q2 2025 (holdings as of June 30, 2025, filed July 29, 2025), William Blair Investment Management, LLC reported 417 stock positions worth $37.7 billion. Its top holding was Microsoft (MSFT) at 5.3% of the portfolio, followed by Nvidia (NVDA, 5.1%) and Taiwan Semiconductor-SP ADR (TSM, 4.0%). Compared with Q1 2025, it opened 38 new positions, sold out of 44, added to 117 and reduced 257. The biggest buy was Nvidia (NVDA, shares +1%) and the biggest sale Yum China (YUMC, shares −89%).

Most Recent 13F: Q2 2026
Location: CHICAGO, IL
CIK: 0001644956
Portfolio Value: $37.7B (Q2 2025)
SEC Filing: 0001644956-25-000032 ↗ filed Jul 29, 2025

Holdings Value

Holdings 417 stocks · $37.7B


MSFT Microsoft Corp.	5.26%	3,981,721	$2.0B	Reduce -3.5%
NVDA Nvidia Corp.	5.15%	12,272,393	$1.9B	Add +0.6%
TSM Taiwan Semiconductor-SP ADR	3.98%	6,622,255	$1.5B	Reduce -10.0%
AMZN Amazon.com Inc.	3.14%	5,400,353	$1.2B	Reduce -11.7%
AAPL Apple Inc.	2.86%	5,253,841	$1.1B	Add +0.3%
META Meta Platforms Inc. Class A	2.80%	1,429,121	$1.1B	Reduce -9.1%
AVGO Broadcom Inc.	2.16%	2,959,172	$815.7M	Reduce -3.9%
MA Mastercard Inc. Class A	1.82%	1,220,265	$685.7M	Add +0.4%
MELI MercadoLibre Inc.	1.66%	238,599	$623.6M	Reduce -6.6%
SE Sea Ltd.-ADR	1.52%	3,588,147	$574.0M	Reduce -2.4%
CG The Carlyle Group Inc.	1.36%	9,949,455	$511.4M	Reduce -18.3%
TRU Transunion	1.11%	4,739,103	$417.0M	Add +41.7%
INTU Intuit Inc.	1.08%	517,131	$407.3M	Reduce -10.2%
COST Costco Wholesale Corp.	0.99%	376,485	$372.7M	Add +6.5%
IDXX Idexx Laboratories Inc.	0.98%	685,088	$367.4M	Add +7.5%
NOW ServiceNow Inc.	0.96%	350,569	$360.4M	Reduce -4.4%
CMG Chipotle Mexican Grill Inc.	0.94%	6,276,424	$352.4M	Reduce -7.7%
TLN Talen Energy Corp.	0.85%	1,101,782	$320.4M	Reduce -1.0%
DOCS Doximity Inc. Class A	0.85%	5,219,394	$320.2M	Add +13.8%
ORLY O'reilly Automotive Inc.	0.85%	3,544,083	$319.4M	Reduce -8.7%
PRMB Primo Brands Corp.	0.83%	10,602,683	$314.1M	Reduce -7.0%
DDOG Datadog Inc. Class A	0.77%	2,171,076	$291.6M	Add +21.6%
CCJ Cameco Corp.	0.76%	3,869,291	$287.2M	Add +15.1%
SPOT Spotify Technology SA	0.76%	371,786	$285.3M	Reduce -13.6%
P Everpure Inc. Class A filed as PURE STORAGE INC	0.75%	4,926,836	$283.7M	Add +112.9%
LIN Linde PLC	0.75%	604,026	$283.4M	Reduce -12.6%
A Agilent Technologies Inc.	0.69%	2,214,487	$261.3M	Add +19.7%
UBER Uber Technologies Inc.	0.68%	2,752,538	$256.8M	Reduce -5.6%
MRCY Mercury Systems Inc.	0.67%	4,695,683	$252.9M	Reduce -12.6%
LYV Live Nation Entertainment Inc.	0.65%	1,625,015	$245.8M	Reduce -8.2%
CFLT Confluent Inc. Class A	0.64%	9,639,102	$240.3M	Add +3.8%
EG Everest Group Ltd.	0.62%	685,769	$233.1M	Reduce -2.4%
BWIN Baldwin Insurance Group Inc./ filed as THE BALDWIN INSURANCE GRP IN	0.61%	5,402,750	$231.3M	Reduce -2.9%
DT Dynatrace Inc.	0.61%	4,163,361	$229.9M	Reduce -17.8%
NVT Nvent Electric PLC	0.61%	3,113,936	$228.1M	Add +29.5%
CIEN Ciena Corp.	0.58%	2,708,540	$220.3M	Add +35.0%
BWXT BWX Technologies Inc.	0.58%	1,517,356	$218.6M	Add +523.2%
SN Sharkninja Inc.	0.58%	2,192,066	$217.0M	Reduce -4.6%
WAY Waystar Holding Corp.	0.57%	5,239,365	$214.1M	Add +23.9%
UNH Unitedhealth Group Inc.	0.57%	684,141	$213.4M	Add +9.5%
TYL Tyler Technologies Inc.	0.56%	358,474	$212.5M	Add +16.2%
CPRT Copart Inc.	0.56%	4,314,945	$211.7M	Reduce -36.6%
RACE Ferrari NV	0.56%	430,828	$211.4M	Reduce -28.6%
CWST Casella Waste Systems Inc. Class A	0.55%	1,800,155	$207.7M	Reduce -18.8%
CRM Salesforce Inc.	0.55%	758,766	$206.9M	Reduce -30.0%
ITUB Itau Unibanco H-Spon PRF ADR	0.53%	29,278,462	$198.9M	Add +51.9%
MNST Monster Beverage Corp.	0.52%	3,143,873	$196.9M	Add +42.9%
CWAN Clearwater Analytics HDS-A	0.51%	8,812,876	$193.3M	Reduce -0.3%
FLUT Flutter Entertainment PLC-Di	0.51%	670,398	$191.6M	Reduce -17.3%
PLNT Planet Fitness Inc. Class A	0.50%	1,738,944	$189.6M	Reduce -5.7%
ORCL Oracle Corp.	0.50%	861,343	$188.3M	New
LRCX Lam Research Corp.	0.49%	1,908,368	$185.8M	Reduce -42.6%
BAM Brookfield Asset Mgmt-A	0.49%	3,345,539	$184.9M	Reduce -10.9%
MLI Mueller Industries Inc.	0.49%	2,319,569	$184.3M	Reduce -1.6%
QTWO Q2 Holdings Inc. filed as Q2 HLDGS INC	0.49%	1,965,859	$184.0M	Reduce -0.1%
PODD Insulet Corp.	0.49%	583,139	$183.2M	Reduce -7.2%
WAL Western Alliance Bancorp	0.48%	2,313,336	$180.4M	Add +0.9%
ACVA Acv Auctions Inc. Class A	0.48%	11,109,706	$180.2M	Add +0.3%
MANH Manhattan Associates Inc.	0.48%	908,334	$179.4M	Reduce -24.3%
BFAM Bright Horizons Family Solut	0.47%	1,446,121	$178.7M	Reduce -34.6%
RY Royal Bank of Canada	0.47%	1,353,389	$178.5M	Reduce -19.2%
VEEV Veeva Systems Inc. Class A	0.47%	616,742	$177.6M	Reduce -1.8%
CW Curtiss-Wright Corp.	0.47%	362,222	$177.0M	Reduce -25.4%
BCO The Brink's Co.	0.47%	1,962,981	$175.3M	Reduce -11.6%
POOL Pool Corp.	0.45%	586,310	$170.9M	Add +13.9%
EHC Encompass Health Corp.	0.45%	1,383,768	$169.7M	Reduce -21.5%
APPF Appfolio Inc. Class A	0.45%	733,428	$168.9M	Add +73.5%
INSM Insmed Inc.	0.44%	1,665,602	$167.6M	Reduce -28.0%
CHE Chemed Corp.	0.44%	339,086	$165.1M	Reduce -23.2%
LRN Stride Inc.	0.42%	1,101,051	$159.9M	Reduce -52.5%
MLM Martin Marietta Materials	0.42%	286,715	$157.4M	Reduce -2.1%
CART Maplebear Inc.	0.40%	3,345,792	$151.4M	New
MZTI The Marzetti Company filed as LANCASTER COLONY CORP	0.40%	873,357	$150.9M	Add +21.3%
WGS Genedx Holdings Corp.	0.40%	1,631,402	$150.6M	Add +37.2%
WSC Willscot Holdings Corp.	0.40%	5,462,958	$149.7M	Add +3.4%
FTAI Ftai Aviation Ltd.	0.40%	1,296,965	$149.2M	Reduce -9.0%
EPAM Epam Systems Inc.	0.40%	841,922	$148.9M	Add +20.9%
TWST Twist Bioscience Corp.	0.38%	3,906,604	$143.7M	Add +2.6%
GMED Globus Medical Inc. Class A	0.38%	2,405,031	$141.9M	Add +5.8%
EXLS Exlservice Holdings Inc.	0.37%	3,187,528	$139.6M	Reduce -18.9%
PSN Parsons Corp.	0.36%	1,889,281	$135.6M	Add +72.5%
CRS Carpenter Technology	0.36%	487,697	$134.8M	New
APO Apollo Global Management Inc.	0.35%	926,495	$131.4M	Reduce -2.0%
NOVT Novanta Inc.	0.34%	979,893	$126.3M	Add +5.5%
BRBR Bellring Brands Inc.	0.33%	2,153,932	$124.8M	New
EXP Eagle Materials Inc.	0.33%	611,745	$123.6M	Add +57.2%
GKOS Glaukos Corp.	0.31%	1,136,095	$117.3M	Add +52.4%
IBN Icici Bank Ltd.-Spon ADR	0.31%	3,467,487	$116.7M	Reduce -6.7%
GWRE Guidewire Software Inc.	0.30%	478,448	$112.7M	Reduce -17.2%
ONB Old National Bancorp	0.30%	5,224,552	$111.5M	Reduce -11.3%
ONTO Onto Innovation Inc.	0.29%	1,098,860	$110.9M	Add +650.4%
EXAS Exact Sciences Corp.	0.28%	2,020,170	$107.4M	Reduce -10.2%
WMS Advanced Drainage Systems Inc.	0.28%	933,595	$107.2M	Reduce -7.9%
BAP Credicorp Ltd.	0.28%	477,765	$106.8M	Add +11.2%
EVR Evercore Inc. Class A	0.28%	395,088	$106.7M	New
GRAB Grab Holdings Ltd. Class A	0.28%	21,150,368	$106.4M	Add +70.0%
MDGL Madrigal Pharmaceuticals Inc.	0.28%	350,289	$106.0M	Reduce -0.8%
FRPT Freshpet Inc.	0.28%	1,527,068	$103.8M	Add +20.6%
MMYT Makemytrip Ltd.	0.27%	1,056,358	$103.5M	Add +22.7%
INSP Inspire Medical Systems Inc.	0.26%	769,169	$99.8M	Add +11.0%

Show all 417 holdings

Portfolio Sells Q1 2025 → Q2 2025


YUMC Yum China Holdings Inc.	Reduce -89.5%	0.07%	−0.72
CPRT Copart Inc.	Reduce -36.6%	0.56%	−0.52
PANW Palo Alto Networks Inc.	Reduce -87.1%	0.08%	−0.49
GTLS Chart Industries Inc.	Reduce -99.6%	0.00%	−0.42
CGNX Cognex Corp.	Reduce -86.3%	0.06%	−0.40
LRN Stride Inc.	Reduce -52.5%	0.42%	−0.40
ACHC Acadia Healthcare Co. Inc.	Reduce -99.5%	0.00%	−0.37
BPMC Blueprint Medicines Corp.	Reduce -99.4%	0.00%	−0.35
AZEK The Azek Co. Inc.	Sold out	0.00%	−0.35
NFE New Fortress Energy Inc.	Reduce -99.6%	0.00%	−0.34
ELF Elf Beauty Inc.	Reduce -91.1%	0.07%	−0.33
CHE Chemed Corp.	Reduce -23.2%	0.44%	−0.32
BFAM Bright Horizons Family Solut	Reduce -34.6%	0.47%	−0.31
PRMB Primo Brands Corp.	Reduce -7.0%	0.83%	−0.30
TEAM Atlassian Corp. Class A	Reduce -93.6%	0.02%	−0.28
ACN Accenture PLC Class A	Reduce -99.5%	0.00%	−0.27
CRM Salesforce Inc.	Reduce -30.0%	0.55%	−0.27
RRX Regal Rexnord Corp.	Sold out	0.00%	−0.25
TENB Tenable Holdings Inc.	Sold out	0.00%	−0.24
SHOP Shopify Inc. Class A	Reduce -98.6%	0.00%	−0.21
NEOG Neogen Corp.	Reduce -30.6%	0.12%	−0.21
AVTR Avantor Inc.	Reduce -99.5%	0.00%	−0.20
ORLY O'reilly Automotive Inc.	Reduce -8.7%	0.85%	−0.19
LRCX Lam Research Corp.	Reduce -42.6%	0.49%	−0.19
LSCC Lattice Semiconductor Corp.	Sold out	0.00%	−0.18
JLL Jones Lang Lasalle Inc.	Reduce -68.8%	0.08%	−0.18
RACE Ferrari NV	Reduce -28.6%	0.56%	−0.16
CWAN Clearwater Analytics HDS-A	Reduce -0.3%	0.51%	−0.15
LIN Linde PLC	Reduce -12.6%	0.75%	−0.15
EXLS Exlservice Holdings Inc.	Reduce -18.9%	0.37%	−0.15
CWST Casella Waste Systems Inc. Class A	Reduce -18.8%	0.55%	−0.14
CG The Carlyle Group Inc.	Reduce -18.3%	1.36%	−0.13
PCTY Paylocity Holding Corp.	Reduce -30.4%	0.23%	−0.13
ATAT Atour Lifestyle Holdings-ADR	Sold out	0.00%	−0.13
AMZN Amazon.com Inc.	Reduce -11.7%	3.14%	−0.12
FOLD Amicus Therapeutics Inc.	Reduce -0.9%	0.22%	−0.12
KOS Kosmos Energy Ltd.	Sold out	0.00%	−0.11
OEC Orion SA	Reduce -81.8%	0.02%	−0.11
MANH Manhattan Associates Inc.	Reduce -24.3%	0.48%	−0.11
GOOGL Alphabet Inc. Class A	Reduce -42.2%	0.17%	−0.10
EG Everest Group Ltd.	Reduce -2.4%	0.62%	−0.10
CODI Compass Diversified Holdings	Sold out	0.00%	−0.09
COLD Americold Realty Trust Inc.	Reduce -23.1%	0.12%	−0.09
YPF YPF S.A.-Sponsored ADR	Reduce -46.0%	0.08%	−0.09
PGR Progressive Corp.	Reduce -66.0%	0.04%	−0.09
BWIN Baldwin Insurance Group Inc./	Reduce -2.9%	0.61%	−0.08
VRTX Vertex Pharmaceuticals Inc.	Reduce -71.5%	0.03%	−0.08
MRX Marex UK Holdings Ltd.	Reduce -51.6%	0.08%	−0.08
JPM JPMorgan Chase & Co.	Reduce -62.4%	0.06%	−0.08
ZTS Zoetis Inc.	Reduce -93.1%	0.01%	−0.08

Portfolio Buys Q1 2025 → Q2 2025


NVDA Nvidia Corp.	Add +0.6%	5.15%	+1.43
BWXT BWX Technologies Inc.	Add +523.2%	0.58%	+0.51
ORCL Oracle Corp.	New	0.50%	+0.50
P Everpure Inc. Class A	Add +112.9%	0.75%	+0.47
CART Maplebear Inc.	New	0.40%	+0.40
CCJ Cameco Corp.	Add +15.1%	0.76%	+0.37
CRS Carpenter Technology	New	0.36%	+0.36
BRBR Bellring Brands Inc.	New	0.33%	+0.33
TRU Transunion	Add +41.7%	1.11%	+0.33
EVR Evercore Inc. Class A	New	0.28%	+0.28
DDOG Datadog Inc. Class A	Add +21.6%	0.77%	+0.28
CLH Clean Harbors Inc.	New	0.25%	+0.25
NVT Nvent Electric PLC	Add +29.5%	0.61%	+0.25
ONTO Onto Innovation Inc.	Add +650.4%	0.29%	+0.24
CIEN Ciena Corp.	Add +35.0%	0.58%	+0.24
ITUB Itau Unibanco H-Spon PRF ADR	Add +51.9%	0.53%	+0.23
IDXX Idexx Laboratories Inc.	Add +7.5%	0.98%	+0.22
EYE National Vision Holdings Inc.	New	0.22%	+0.22
AMD Advanced Micro Devices	Add +986.0%	0.23%	+0.21
FHN First Horizon Corp.	New	0.21%	+0.21
RS Reliance Inc.	New	0.19%	+0.19
APPF Appfolio Inc. Class A	Add +73.5%	0.45%	+0.19
PSN Parsons Corp.	Add +72.5%	0.36%	+0.18
WCN Waste Connections Inc.	New	0.17%	+0.17
MNST Monster Beverage Corp.	Add +42.9%	0.52%	+0.16
GOGO Gogo Inc.	Add +124.8%	0.22%	+0.16
AGYS Agilysys Inc.	New	0.16%	+0.16
SMPL The Simply Good Foods Co.	New	0.13%	+0.13
CCEP Coca-Cola Europacific Partne	New	0.13%	+0.13
WAY Waystar Holding Corp.	Add +23.9%	0.57%	+0.12
GRAB Grab Holdings Ltd. Class A	Add +70.0%	0.28%	+0.12
GKOS Glaukos Corp.	Add +52.4%	0.31%	+0.11
WGS Genedx Holdings Corp.	Add +37.2%	0.40%	+0.10
DOCS Doximity Inc. Class A	Add +13.8%	0.85%	+0.10
COHR Coherent Corp.	New	0.10%	+0.10
LITE Lumentum Holdings Inc.	New	0.09%	+0.09
KEX Kirby Corp.	New	0.09%	+0.09
A Agilent Technologies Inc.	Add +19.7%	0.69%	+0.09
EXP Eagle Materials Inc.	Add +57.2%	0.33%	+0.09
ULS Ul Solutions Inc. Class A	New	0.09%	+0.09
CPNG Coupang Inc.	New	0.08%	+0.08
ALK Alaska Air Group Inc.	Add +13557.0%	0.08%	+0.08
SLGN Silgan Holdings Inc.	New	0.08%	+0.08
ICUI Icu Medical Inc.	New	0.07%	+0.07
AIT Applied Industrial Tech Inc.	New	0.07%	+0.07
FN Fabrinet	New	0.07%	+0.07
NU Nu Holdings Ltd./Cayman Isl-A	Add +9.3%	0.25%	+0.07
EPAM Epam Systems Inc.	Add +20.9%	0.40%	+0.07
TYL Tyler Technologies Inc.	Add +16.2%	0.56%	+0.06
BAP Credicorp Ltd.	Add +11.2%	0.28%	+0.06

All Filings

Quarter	Positions	13F Reported Value	Top Holdings
Q2 2026	403	$33.3B	TSM, NVDA, GOOGL, AAPL, AVGO
Q1 2026	413	$30.3B	TSM, NVDA, AAPL, MSFT, GOOGL
Q4 2025	413	$35.9B	NVDA, TSM, MSFT, AAPL, AMZN
Q3 2025	414	$38.7B	NVDA, MSFT, TSM, AAPL, AMZN
Q2 2025	417	$37.7B	MSFT, NVDA, TSM, AMZN, AAPL
Q1 2025	423	$35.6B	MSFT, NVDA, TSM, AMZN, AAPL
Q4 2024	433	$40.9B	MSFT, NVDA, TSM, AMZN, AAPL
Q3 2024	412	$40.5B	MSFT, NVDA, TSM, AAPL, AMZN
Q2 2024	411	$38.1B	MSFT, NVDA, TSM, GOOGL, AMZN
Q1 2024	410	$38.7B	MSFT, TSM, GOOGL, AMZN, NVDA