Institutions / William Blair Investment Management, LLC
William Blair Investment Management, LLC
CIK 1644956 · Institution · as of Dec 31, 2025
Portfolio value
$35.85B
Positions
413
As of
Dec 31, 2025
Top holdings
Dec 31, 2025View all 413 →
| Company | Value | % of portfolio |
|---|---|---|
| NVIDIA Corp | $1.98B | 5.5% |
| Taiwan Semiconductor Manufacturing Co LtdTSM | $1.82B | 5.1% |
| Microsoft Corp | $1.69B | 4.7% |
| Apple Inc. | $1.48B | 4.1% |
| Amazon.com Inc | $1.01B | 2.8% |
| Alphabet Inc. | $987.51M | 2.8% |
| Broadcom Inc. | $877.92M | 2.4% |
| Meta Platforms Inc | $783.37M | 2.2% |
| Mastercard Inc | $619.37M | 1.7% |
| Carlyle Group Inc. | $421.57M | 1.2% |
| TransUnion | $340.04M | 0.9% |
| MercadoLibre, Inc. | $333.52M | 0.9% |
| ServiceNow Inc | $329.17M | 0.9% |
| Nu Hldgs Ltd | $313.03M | 0.9% |
| Sea Ltd | $302.42M | 0.8% |
| Idexx Laboratories Inc /De | $298.57M | 0.8% |
| Snowflake Inc. | $295.48M | 0.8% |
| Intuit Inc. | $293.05M | 0.8% |
| Monster Beverage Corp | $288.37M | 0.8% |
| Advanced Micro Devices Inc | $286.88M | 0.8% |
| Costco Wholesale Corp /New | $283.25M | 0.8% |
| Agilent Technologies Inc | $280.71M | 0.8% |
| Linde PLC | $274.37M | 0.8% |
| Onto Innovation Inc. | $272.56M | 0.8% |
| O Reilly Automotive Inc | $271.94M | 0.8% |
Activity
Dec 31, 2025
InsidersInstitutions
This fund's 13F position changes — what it's buying and selling.No quarter-over-quarter changes yet — position changes appear once we've ingested two consecutive 13F filings for this manager. We currently hold 1 quarter of holdings.