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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
+10.07%
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
$31.8B
AUM Growth
+$2.49B
Cap. Flow
+$139M
Cap. Flow %
0.44%
Top 10 Hldgs %
23.43%
Holding
1,869
New
90
Increased
714
Reduced
722
Closed
82

Top Buys

Rank Stock Value
1
UBER icon
Uber
UBER
+$24.2M
2
IOT icon
Samsara
IOT
+$23.9M
3
PRCT icon
Procept Biorobotics
PRCT
+$20.5M
4
ISRG icon
Intuitive Surgical
ISRG
+$19.9M
5
AMZN icon
Amazon
AMZN
+$19.4M

Top Sells

Rank Stock Value
1
SPLK
Splunk Inc
SPLK
+$67.1M
2
MA icon
Mastercard
MA
+$65.4M
3
AON icon
Aon
AON
+$40.3M
4
FLYW icon
Flywire
FLYW
+$25.7M
5
DV icon
DoubleVerify
DV
+$19.5M

Sector Composition

Rank Sector Weight
1 Technology 25.75%
2 Healthcare 17.03%
3 Financials 12.35%
4 Industrials 11.88%
5 Consumer Discretionary 8.53%
Name Market Value Portfolio Weight Shares or Principal Change
in Stake 		Capital Flow
FLYW icon
151
Flywire
FLYW
$2.12B
$33.7M 0.11%
1,357,536
-1,098,801
-45% -$25.7M
SDVY icon
152
First Trust SMID Cap Rising Dividend Achievers ETF
SDVY
$11.8B
$33.7M 0.11%
966,461
+237,950
+33% +$7.77M
BA icon
153
Boeing
BA
$183B
$33.1M 0.1%
171,708
-35,099
-17% -$7.21M
ULTA icon
154
Ulta Beauty
ULTA
$22.9B
$33.1M 0.1%
63,281
+1,766
+3% +$912K
FTV icon
155
Fortive
FTV
$18.6B
$33M 0.1%
509,139
-4,372
-0.9% -$265K
CVS icon
156
CVS Health
CVS
$121B
$32.9M 0.1%
412,807
-48,714
-11% -$3.72M
GLD icon
157
SPDR Gold Trust
GLD
$144B
$32.9M 0.1%
159,747
+6,321
+4% +$1.21M
ORCL icon
158
Oracle
ORCL
$442B
$32.5M 0.1%
258,411
+26,255
+11% +$3.01M
CSCO icon
159
Cisco
CSCO
$488B
$31.9M 0.1%
638,298
-31,252
-5% -$1.56M
HEI icon
160
HEICO Corp
HEI
$52.1B
$31.7M 0.1%
166,165
-175
-0.1% -$32.5K
DSGX icon
161
Descartes Systems
DSGX
$6.65B
$31.5M 0.1%
344,492
+15,554
+5% +$1.37M
BSV icon
162
Vanguard Short-Term Bond ETF
BSV
$45.6B
$31M 0.1%
404,151
+38,152
+10% +$2.93M
GILD icon
163
Gilead Sciences
GILD
$168B
$30.7M 0.1%
418,477
-50,963
-11% -$3.92M
GE icon
164
GE Aerospace
GE
$379B
$30.6M 0.1%
218,399
+12,012
+6% +$1.42M
PSX icon
165
Phillips 66
PSX
$90B
$30.6M 0.1%
187,152
+8,102
+5% +$1.17M
PTLO icon
166
Portillo's
PTLO
$345M
$30.3M 0.1%
2,135,768
-363,148
-15% -$5.04M
DVAX
167
DELISTED
Dynavax Technologies
DVAX
$29.8M 0.09%
2,401,784
-7,431
-0.3% -$96.9K
SPMD icon
168
State Street SPDR Portfolio S&P 400 Mid Cap ETF
SPMD
$19B
$29.7M 0.09%
557,127
+35,141
+7% +$1.75M
VRTX icon
169
Vertex Pharmaceuticals
VRTX
$133B
$29.6M 0.09%
70,911
+6,937
+11% +$2.93M
PFE icon
170
Pfizer
PFE
$150B
$29.2M 0.09%
1,050,934
-26,704
-2% -$741K
SHOP icon
171
Shopify
SHOP
$194B
$28.7M 0.09%
371,735
+1,356
+0.4% +$107K
ONT
172
Onterris Inc
ONT
$576M
$28.7M 0.09%
732,318
+170,924
+30% +$5.73M
CDW icon
173
CDW
CDW
$17.1B
$28.5M 0.09%
111,316
+8,586
+8% +$2.04M
IOT icon
174
Samsara
IOT
$22.9B
$28.2M 0.09%
744,929
+701,144
+1,601% +$23.9M
KVUE icon
175
Kenvue
KVUE
$36.5B
$28.1M 0.09%
1,311,126
-103,426
-7% -$2.1M
5 6
7
8 9

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William Blair & Company's Q1 2024 Portfolio in Review

As of Q1 2024, William Blair & Company held 1,869 positions worth $31.8B, up 8.5% from $29.3B the previous quarter. Its ten largest holdings account for 23% of the portfolio.

William Blair & Company's Q1 2024 filing shows 90 new, 714 increased, 722 reduced and 82 closed positions. Its largest new stake was Procept Biorobotics: 429,793 shares worth $21.2M. The largest sale was Splunk Inc, an estimated $67.1M.

By sector, the portfolio is most concentrated in Technology at 26% of assets, down from 26% a quarter earlier, followed by Healthcare and Financials.

  • William Blair & Company's largest Q1 2024 buy was Procept Biorobotics: 429,793 shares worth $21.2M.
  • William Blair & Company added most to Uber in Q1 2024, an estimated $24.2M increase.
  • William Blair & Company's biggest Q1 2024 reduction was Mastercard, cutting an estimated $65.4M.
  • William Blair & Company fully exited Splunk Inc in Q1 2024, selling an estimated $67.1M.
  • William Blair & Company's ten largest holdings make up 23% of its $31.8B portfolio in Q1 2024.
  • William Blair & Company opened 90 new positions and closed 82 in Q1 2024.
  • William Blair & Company's portfolio value rose 8.5% quarter-over-quarter to $31.8B.

Based on William Blair & Company's 13F filing for Q1 2024, filed 9 May 2024.