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William Blair & Company

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
Cap. Flow
-$18.6M
Cap. Flow %
-0.05%
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
BLK icon
Blackrock
BLK
+$53.4M
3
CWAN
Clearwater Analytics
CWAN
+$48.5M
4
NVDA icon
NVIDIA
NVDA
+$47.9M
5
BWXT icon
BWX Technologies
BWXT
+$47M

Top Sells

Rank Stock Value
1
DXCM icon
DexCom
DXCM
+$37.7M
2
CSGP icon
CoStar Group
CSGP
+$34.5M
3
VRTX icon
Vertex Pharmaceuticals
VRTX
+$30M
4
BAH icon
Booz Allen Hamilton
BAH
+$29.1M
5
IDXX icon
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
KLAC icon
226
KLA
KLAC
$272B
$19.7M 0.06%
312,100
+1,860
+0.6% +$126K
EHC icon
227
Encompass Health
EHC
$12.3B
$19.6M 0.06%
212,018
-13,280
-6% -$1.3M
DVY icon
228
iShares Select Dividend ETF
DVY
$23.7B
$19.5M 0.06%
148,558
+90
+0.1% +$12.3K
PSX icon
229
Phillips 66
PSX
$90B
$19.4M 0.06%
170,597
-29,938
-15% -$3.81M
VMC icon
230
Vulcan Materials
VMC
$36.3B
$19.4M 0.06%
75,405
-179
-0.2% -$48.1K
VYM icon
231
Vanguard High Dividend Yield ETF
VYM
$84B
$18.8M 0.05%
147,155
+3,899
+3% +$508K
SMH icon
232
VanEck Semiconductor ETF
SMH
$72B
$18.7M 0.05%
77,361
-19,168
-20% -$4.76M
EVH icon
233
Evolent Health
EVH
$471M
$18.7M 0.05%
1,658,988
-497,127
-23% -$8.74M
PAUG icon
234
Innovator US Equity Power Buffer ETF August
PAUG
$935M
$18.4M 0.05%
477,936
-3,118
-0.6% -$120K
NKE icon
235
Nike
NKE
$60.1B
$18.4M 0.05%
242,664
-99,993
-29% -$7.85M
SPXC icon
236
SPX Corp
SPXC
$10.9B
$18.4M 0.05%
126,157
+12,048
+11% +$1.94M
XLK icon
237
State Street Technology Select Sector SPDR ETF
XLK
$124B
$18.2M 0.05%
156,974
-1,806
-1% -$210K
TSM icon
238
TSMC
TSM
$2.23T
$18.1M 0.05%
91,596
+4,857
+6% +$940K
ROP icon
239
Roper Technologies
ROP
$39.1B
$18M 0.05%
34,680
-439
-1% -$241K
MKL icon
240
Markel Group
MKL
$22.8B
$17.8M 0.05%
10,294
+999
+11% +$1.66M
MDLZ icon
241
Mondelez International
MDLZ
$79.4B
$17.6M 0.05%
295,333
+6,658
+2% +$440K
RCL icon
242
Royal Caribbean
RCL
$82.4B
$17.6M 0.05%
76,230
-2,009
-3% -$445K
GDYN icon
243
Grid Dynamics Holdings
GDYN
$632M
$17.4M 0.05%
780,202
-22,235
-3% -$388K
PYPL icon
244
PayPal
PYPL
$50.6B
$17.3M 0.05%
202,928
-7,659
-4% -$644K
SYY icon
245
Sysco
SYY
$40.5B
$17.2M 0.05%
225,403
-15,316
-6% -$1.17M
EXAS
246
DELISTED
Exact Sciences
EXAS
$17.1M 0.05%
304,381
-53,430
-15% -$3.32M
VNQ icon
247
Vanguard Real Estate ETF
VNQ
$38.6B
$16.7M 0.05%
187,640
-3,387
-2% -$320K
XLV icon
248
State Street Health Care Select Sector SPDR ETF
XLV
$44B
$16.7M 0.05%
121,148
-15,676
-11% -$2.29M
ARES icon
249
Ares Management
ARES
$32.1B
$16.7M 0.05%
94,093
+17,880
+23% +$3.05M
APO icon
250
Apollo Global Management
APO
$81.9B
$16.5M 0.05%
100,136
+8,792
+10% +$1.39M
8 9
10
11 12

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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.