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William Blair & Company Portfolio holdings
AUM
$38.4B
1-Year Est. Return
25.71%
This Fund
S&P 500
This Quarter
Est. Return
+3.1%
1 Year Est. Return
+25.71%
3 Year Est. Return
+88.7%
5 Year Est. Return
+104.53%
10 Year Est. Return
+665.86%
AUM
$34.4B
AUM Growth
+$328M
(+0.96%)
Cap. Flow
-$18.6M
Cap. Flow
% of AUM
-0.05%
Top 10 Holdings %
Top 10 Hldgs %
25.12%
Holding
1,903
New
83
Increased
650
Reduced
792
Closed
87
Top Buys
| Rank | Stock | Value |
|---|---|---|
| 1 |
XYZ
Block Inc
XYZ
|
+$80.6M |
| 2 |
Blackrock
BLK
|
+$53.4M |
| 3 |
CWAN
Clearwater Analytics
CWAN
|
+$48.5M |
| 4 |
NVIDIA
NVDA
|
+$47.9M |
| 5 |
BWX Technologies
BWXT
|
+$47M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
DexCom
DXCM
|
+$37.7M |
| 2 |
CoStar Group
CSGP
|
+$34.5M |
| 3 |
Vertex Pharmaceuticals
VRTX
|
+$30M |
| 4 |
Booz Allen Hamilton
BAH
|
+$29.1M |
| 5 |
Idexx Laboratories
IDXX
|
+$26.6M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Technology | 28.35% |
| 2 | Financials | 13.43% |
| 3 | Healthcare | 12.44% |
| 4 | Industrials | 11.81% |
| 5 | Consumer Discretionary | 8.44% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
476
Sprott Physical Gold
PHYS
$16B
| $5.41M | 0.02% |
268,605
+9,554
| +4% | +$196K |
|
477
Sarepta Therapeutics
SRPT
$1.94B
| $5.41M | 0.02% |
44,477
-4,685
| -10% | -$574K |
|
478
Palantir
PLTR
$411B
| $5.4M | 0.02% |
71,429
+9,255
| +15% | +$539K |
|
479
Core Scientific
CORZ
$6.71B
| $5.37M | 0.02% |
381,910
-588,357
| -61% | -$8.69M |
|
480
Innovator International Developed Power Buffer ETF July
IJUL
$258M
| $5.36M | 0.02% |
193,497
-13,478
| -7% | -$382K |
|
481
Martin Marietta Materials
MLM
$32.7B
| $5.34M | 0.02% |
10,345
+136
| +1% | +$77.2K |
|
482
Invesco FTSE RAFI US 1000 ETF
PRF
$10B
| $5.32M | 0.02% |
131,988
-536
| -0.4% | -$22.1K |
|
483
Airgain
AIRG
$69.3M
| $5.29M | 0.02% |
749,731
-42,150
| -5% | -$369K |
|
484
Globant
GLOB
$1.67B
| $5.29M | 0.02% |
24,664
-3,411
| -12% | -$744K |
|
|
DFS
485
DELISTED
Discover Financial Services
DFS
| $5.25M | 0.02% |
30,305
-958
| -3% | -$157K |
|
486
Hamilton Lane
HLNE
$5.69B
| $5.25M | 0.02% |
35,429
-1,170
| -3% | -$208K |
|
487
Enbridge
ENB
$112B
| $5.22M | 0.02% |
122,921
+95
| +0.1% | +$3.98K |
|
488
CSX Corp
CSX
$92.8B
| $5.22M | 0.02% |
161,609
-9,629
| -6% | -$330K |
|
489
Capital Group Core Equity ETF
CGUS
$11.9B
| $5.19M | 0.02% |
148,540
-3,307
| -2% | -$116K |
|
490
ConocoPhillips
COP
$153B
| $5.18M | 0.02% |
52,211
-826
| -2% | -$87.7K |
|
491
Suncor Energy
SU
$74.7B
| $5.16M | 0.02% |
144,739
-422
| -0.3% | -$16.2K |
|
492
D.R. Horton
DHI
$40.8B
| $5.14M | 0.02% |
36,782
+95
| +0.3% | +$15.9K |
|
493
LyondellBasell Industries
LYB
$20.3B
| $5.12M | 0.01% |
68,884
+58,186
| +544% | +$4.89M |
|
494
Nucor
NUE
$61.7B
| $5.1M | 0.01% |
43,719
+13,784
| +46% | +$1.98M |
|
495
BlackLine
BL
$1.65B
| $5M | 0.01% |
82,238
-2,602
| -3% | -$155K |
|
496
Canadian National Railway
CNI
$76.4B
| $4.97M | 0.01% |
48,914
-2,618
| -5% | -$286K |
|
497
Innovator US Equity Power Buffer ETF October
POCT
$974M
| $4.96M | 0.01% |
125,277
+35,708
| +40% | +$1.41M |
|
498
iShares 1-3 Year Treasury Bond ETF
SHY
$25.5B
| $4.92M | 0.01% |
59,988
+2,046
| +4% | +$168K |
|
499
Brink's
BCO
$4.69B
| $4.87M | 0.01% |
52,528
-15,705
| -23% | -$1.57M |
|
500
Robert Half
RHI
$4.25B
| $4.83M | 0.01% |
68,562
-1,800
| -3% | -$128K |
|
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William Blair & Company's Q4 2024 Portfolio in Review
As of Q4 2024, William Blair & Company held 1,903 positions worth $34.4B, up 0.96% from $34.1B the previous quarter. Its ten largest holdings account for 25% of the portfolio.
William Blair & Company's Q4 2024 filing shows 83 new, 650 increased, 792 reduced and 87 closed positions. Its largest new stake was Blackrock: 52,623 shares worth $53.9M. The largest sale was DexCom, an estimated $37.7M.
By sector, the portfolio is most concentrated in Technology at 28% of assets, up from 27% a quarter earlier, followed by Financials and Healthcare.
- William Blair & Company's largest Q4 2024 buy was Blackrock: 52,623 shares worth $53.9M.
- William Blair & Company added most to Block Inc in Q4 2024, an estimated $80.6M increase.
- William Blair & Company's biggest Q4 2024 reduction was DexCom, cutting an estimated $37.7M.
- William Blair & Company fully exited Rush Street Interactive in Q4 2024, selling an estimated $5.79M.
- William Blair & Company's ten largest holdings make up 25% of its $34.4B portfolio in Q4 2024.
- William Blair & Company opened 83 new positions and closed 87 in Q4 2024.
- William Blair & Company's portfolio value rose 0.96% quarter-over-quarter to $34.4B.
Based on William Blair & Company's 13F filing for Q4 2024, filed 12 Feb 2025.