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William Blair Investment Management Portfolio holdings
AUM
$33.3B
1-Year Est. Return
44.76%
This Fund
S&P 500
This Quarter
Est. Return
+5.41%
1 Year Est. Return
+44.76%
3 Year Est. Return
+140.8%
5 Year Est. Return
+166.51%
10 Year Est. Return
+978.6%
AUM
$40.9B
AUM Growth
+$405M
(+1%)
Cap. Flow
-$285M
Cap. Flow
% of AUM
-0.7%
Top 10 Holdings %
Top 10 Hldgs %
27.41%
Holding
463
New
51
Increased
220
Reduced
159
Closed
30
Top Buys
| Rank | Stock | Value |
|---|---|---|
| 1 |
PRMB
Primo Brands
PRMB
|
+$331M |
| 2 |
Yum China
YUMC
|
+$240M |
| 3 |
TLN
Talen Energy Corp
TLN
|
+$232M |
| 4 |
Mueller Industries
MLI
|
+$206M |
| 5 |
Brookfield Asset Management
BAM
|
+$203M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
Intuitive Surgical
ISRG
|
+$315M |
| 2 |
Icon
ICLR
|
+$294M |
| 3 |
Zoetis
ZTS
|
+$230M |
| 4 |
BWX Technologies
BWXT
|
+$222M |
| 5 |
PRMW
Primo Water Corporation
PRMW
|
+$197M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Technology | 34.12% |
| 2 | Consumer Discretionary | 14.8% |
| 3 | Financials | 12.22% |
| 4 | Healthcare | 11.93% |
| 5 | Industrials | 10.15% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
451
On Holding
ONON
$10.4B
| – | – |
-3,169,543
| Closed | -$159M |
|
452
Pinduoduo
PDD
$127B
| – | – |
-949,976
| Closed | -$128M |
|
453
RxSight
RXST
$294M
| – | – |
-249,020
| Closed | -$12.3M |
|
454
Sylvamo
SLVM
$1.53B
| – | – |
-229,054
| Closed | -$19.7M |
|
455
Terex
TEX
$7.8B
| – | – |
-510,666
| Closed | -$27M |
|
456
Toll Brothers
TOL
$13.9B
| – | – |
-1,584
| Closed | -$245K |
|
457
Veracyte
VCYT
$3.59B
| – | – |
-811,792
| Closed | -$27.6M |
|
458
Vertex
VERX
$2B
| – | – |
-843,006
| Closed | -$32.5M |
|
459
Virtu Financial
VIRT
$5.04B
| – | – |
-2,488,061
| Closed | -$75.8M |
|
460
Vesta Real Estate
VTMX
$3.21B
| – | – |
-187,060
| Closed | -$5.04M |
|
461
Zeta Global
ZETA
$7.17B
| – | – |
-1,434,340
| Closed | -$42.8M |
|
|
ALTR
462
DELISTED
Altair Engineering Inc
ALTR
| – | – |
-1,471,184
| Closed | -$141M |
|
|
PRMW
463
DELISTED
Primo Water Corporation
PRMW
| – | – |
-7,792,292
| Closed | -$197M |
|
Similar funds
GAM
VIA
William Blair Investment Management's Q4 2024 Portfolio in Review
As of Q4 2024, William Blair Investment Management held 463 positions worth $40.9B, up 1% from $40.5B the previous quarter. Its ten largest holdings account for 27% of the portfolio.
William Blair Investment Management's Q4 2024 filing shows 51 new, 220 increased, 159 reduced and 30 closed positions. Its largest new stake was Primo Brands: 11,161,870 shares worth $343M. The largest sale was Intuitive Surgical, an estimated $315M.
By sector, the portfolio is most concentrated in Technology at 34% of assets, down from 34% a quarter earlier, followed by Consumer Discretionary and Financials.
- William Blair Investment Management's largest Q4 2024 buy was Primo Brands: 11,161,870 shares worth $343M.
- William Blair Investment Management added most to West Pharmaceutical in Q4 2024, an estimated $177M increase.
- William Blair Investment Management's biggest Q4 2024 reduction was Intuitive Surgical, cutting an estimated $315M.
- William Blair Investment Management fully exited Primo Water Corporation in Q4 2024, selling an estimated $197M.
- William Blair Investment Management's ten largest holdings make up 27% of its $40.9B portfolio in Q4 2024.
- William Blair Investment Management opened 51 new positions and closed 30 in Q4 2024.
- William Blair Investment Management's portfolio value rose 1% quarter-over-quarter to $40.9B.
Based on William Blair Investment Management's 13F filing for Q4 2024, filed 10 Feb 2025.