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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
-6.4%
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
$35.6B
AUM Growth
-$5.32B
(-13%)
Cap. Flow
-$1.91B
Cap. Flow
% of AUM
-5.36%
Top 10 Holdings %
Top 10 Hldgs %
26.78%
Holding
469
New
36
Increased
114
Reduced
269
Closed
46
Top Buys
| Rank | Stock | Value |
|---|---|---|
| 1 |
Broadcom
AVGO
|
+$515M |
| 2 |
Sea Limited
SE
|
+$179M |
| 3 |
Tyler Technologies
TYL
|
+$177M |
| 4 |
WAY
Waystar Holding Corp
WAY
|
+$167M |
| 5 |
Ciena
CIEN
|
+$159M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
Advanced Micro Devices
AMD
|
+$229M |
| 2 |
Accenture
ACN
|
+$222M |
| 3 |
Penumbra
PEN
|
+$210M |
| 4 |
CF Industries
CF
|
+$201M |
| 5 |
Texas Instruments
TXN
|
+$184M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Technology | 32.57% |
| 2 | Consumer Discretionary | 15.58% |
| 3 | Financials | 13.1% |
| 4 | Healthcare | 12.15% |
| 5 | Industrials | 9.67% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
451
Range Resources
RRC
$9.39B
| – | – |
-1,594,616
| Closed | -$57.4M |
|
452
Shoals Technologies Group
SHLS
$1.4B
| – | – |
-68,406
| Closed | -$378K |
|
453
Silgan Holdings
SLGN
$4.3B
| – | – |
-5,362
| Closed | -$279K |
|
454
Snap-on
SNA
$21.1B
| – | – |
-1,114
| Closed | -$378K |
|
455
Synopsys
SNPS
$79B
| – | – |
-44,742
| Closed | -$21.7M |
|
456
Teva Pharmaceuticals
TEVA
$42.8B
| – | – |
-4,241,547
| Closed | -$93.5M |
|
457
TFI International
TFII
$12B
| – | – |
-146,657
| Closed | -$19.8M |
|
458
Transportadora de Gas del Sur
TGS
$4.23B
| – | – |
-179,225
| Closed | -$5.25M |
|
459
Tencent Music
TME
$13.9B
| – | – |
-1,902,836
| Closed | -$21.6M |
|
460
Trane Technologies
TT
$105B
| – | – |
-96,054
| Closed | -$35.5M |
|
461
TotalEnergies
TTE
$194B
| – | – |
-34,303
| Closed | -$1.87M |
|
|
462
Texas Instruments
TXN
$253B
| – | – |
-979,075
| Closed | -$184M |
|
463
Universal Electronics
UEIC
$75.8M
| – | – |
-343,229
| Closed | -$3.78M |
|
464
Ulta Beauty
ULTA
$22.9B
| – | – |
-44,740
| Closed | -$19.5M |
|
465
Vulcan Materials
VMC
$36.3B
| – | – |
-71,235
| Closed | -$18.3M |
|
466
Whirlpool
WHR
$2.79B
| – | – |
-3,234
| Closed | -$370K |
|
467
Workiva
WK
$3.7B
| – | – |
-445,628
| Closed | -$48.8M |
|
|
LAR
468
Lithium Argentina AG
LAR
$1.12B
| – | – |
-3,230,750
| Closed | -$8.46M |
|
|
BERY
469
DELISTED
Berry Global Group, Inc.
BERY
| – | – |
-6,467
| Closed | -$418K |
|
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William Blair Investment Management's Q1 2025 Portfolio in Review
As of Q1 2025, William Blair Investment Management held 469 positions worth $35.6B, down 13% from $40.9B the previous quarter. Its ten largest holdings account for 27% of the portfolio.
William Blair Investment Management withdrew a net $1.91B in Q1 2025, closing 46 positions and reducing 269 holdings. Its most notable exit was Penumbra, an estimated $210M position sold in full.
By sector, the portfolio is most concentrated in Technology at 33% of assets, down from 34% a quarter earlier, followed by Consumer Discretionary and Financials.
Against the trend, William Blair Investment Management opened a new position in Waystar Holding Corp worth $158M.
- William Blair Investment Management's largest Q1 2025 buy was Waystar Holding Corp: 4,227,425 shares worth $158M.
- William Blair Investment Management added most to Broadcom in Q1 2025, an estimated $515M increase.
- William Blair Investment Management's biggest Q1 2025 reduction was Advanced Micro Devices, cutting an estimated $229M.
- William Blair Investment Management fully exited Penumbra in Q1 2025, selling an estimated $210M.
- William Blair Investment Management's ten largest holdings make up 27% of its $35.6B portfolio in Q1 2025.
- William Blair Investment Management opened 36 new positions and closed 46 in Q1 2025.
- William Blair Investment Management's portfolio value fell 13% quarter-over-quarter to $35.6B.
Based on William Blair Investment Management's 13F filing for Q1 2025, filed 9 May 2025.