§ 13F · FUND PROFILE
WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC.
Growth equity, international focus
AUM · $37680.0T (13F)Positions · 417Turnover · 99% · Q4Filed · Feb 9, 2026
CONCENTRATION
33%
Top 10 holdings
NEW BUYS
+46
+$1793.8T deployed
EXITS
0
No exits
SECTOR SHIFT
RETAIL → OTHER
-1pp · +2pp
3YR HIT RATE
—
Top-5 overlap
§ 01 · TOP HOLDINGS
The book · Q4 2025
FILED FEB 9, 2026
| # | Ticker | Name | Shares | $ value | % port | Δ Q4 |
|---|---|---|---|---|---|---|
| 1 | NVDA | NVIDIA CORPORATION | 10.63M | $1982.2T | 5.5% | −8% |
| 2 | TSM | TAIWAN SEMICONDUCTOR MFG LTD | 5.99M | $1818.7T | 5.1% | −7% |
| 3 | MSFT | MICROSOFT CORP | 3.49M | $1688.0T | 4.7% | −9% |
| 4 | AAPL | APPLE INC | 5.44M | $1480.1T | 4.1% | −3% |
| 5 | AMZN | AMAZON COM INC | 4.39M | $1012.6T | 2.8% | −1% |
| 6 | GOOGL | ALPHABET INC | 3.15M | $987.5T | 2.8% | +27% |
| 7 | AVGO | BROADCOM INC | 2.54M | $877.9T | 2.4% | −10% |
| 8 | META | META PLATFORMS INC | 1.19M | $783.4T | 2.2% | ±0% |
| 9 | MA | MASTERCARD INCORPORATED | 1.08M | $619.4T | 1.7% | −2% |
| 10 | CG | CARLYLE GROUP INC | 7.13M | $421.6T | 1.2% | −18% |
§ 02 · SECTOR ALLOCATION
Where the money is
Other46.4% (+2pp)
Technology16.9% (±0)
Semiconductors16.2% (+1pp)
Health Care7.5% (±0)
Retail7.2% (−1pp)
Media5.6%
§ 03 · THE WILLIAM SIGNAL
AC read
WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC is a Quality / Compounder fund managing $37679983.0 trillion in assets. The fund runs a broad portfolio of 417 positions, broad diversification across holdings, with the top 10 accounting for 33%. Trading activity is aggressive at 99% quarterly turnover, with 46 new positions and 0 exits last quarter. Top sector allocations: Other (46%), Technology (17%), Semiconductors (16%).
Read the full dossier →§ 04 · FILING HISTORY
Q-by-Q deltas
1 FILINGS
Q4 2025
Busy quarter
+46 buys · −0 exits · 364 changed
Q3 2025
Steady book
+0 buys · −0 exits · 0 changed
Q2 2025
Steady book
+0 buys · −0 exits · 0 changed
Q1 2025
Steady book
+0 buys · −0 exits · 0 changed