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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
+9.7%
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
$27.3B
AUM Growth
+$2.26B
Cap. Flow
+$202M
Cap. Flow %
0.74%
Top 10 Hldgs %
24.36%
Holding
1,897
New
97
Increased
682
Reduced
737
Closed
88

Top Buys

Rank Stock Value
1
COST icon
Costco
COST
+$28.3M
2
ALL icon
Allstate
ALL
+$25.8M
3
ISRG icon
Intuitive Surgical
ISRG
+$19.6M
4
NEOG icon
Neogen
NEOG
+$17.4M
5
DV icon
DoubleVerify
DV
+$17.3M

Top Sells

Rank Stock Value
1
NBIX icon
Neurocrine Biosciences
NBIX
+$29.1M
2
PLNT icon
Planet Fitness
PLNT
+$20.4M
3
ABNB icon
Airbnb
ABNB
+$17.1M
4
IBM icon
IBM
IBM
+$14.8M
5
XMTR icon
Xometry
XMTR
+$10.8M

Sector Composition

Rank Sector Weight
1 Technology 25.59%
2 Healthcare 18.44%
3 Industrials 11.64%
4 Financials 11.51%
5 Consumer Discretionary 8.51%
Name Market Value Portfolio Weight Shares or Principal Change
in Stake 		Capital Flow
EEM icon
326
iShares MSCI Emerging Markets ETF
EEM
$30.5B
$9.13M 0.03%
230,824
+17,066
+8% +$671K
XBI icon
327
State Street SPDR S&P Biotech ETF
XBI
$10.3B
$9.08M 0.03%
109,160
+2,048
+2% +$171K
HAL icon
328
Halliburton
HAL
$27.4B
$9.04M 0.03%
274,054
+30,334
+12% +$958K
MCK icon
329
McKesson
MCK
$99.9B
$9.03M 0.03%
21,133
+1,277
+6% +$491K
AMN icon
330
AMN Healthcare
AMN
$1.34B
$8.99M 0.03%
82,368
-3,731
-4% -$354K
CMCSA icon
331
Comcast
CMCSA
$92.9B
$8.95M 0.03%
215,351
+8,846
+4% +$351K
TCMD icon
332
Tactile Systems Technology
TCMD
$537M
$8.9M 0.03%
357,028
-2,880
-0.8% -$59.8K
FSV icon
333
FirstService
FSV
$6.18B
$8.89M 0.03%
57,711
+23,342
+68% +$3.39M
VB icon
334
Vanguard Morningstar Small-Cap ETF
VB
$83.4B
$8.89M 0.03%
44,704
+1,649
+4% +$312K
IVW icon
335
iShares S&P 500 Growth ETF
IVW
$77.9B
$8.78M 0.03%
124,596
-5,246
-4% -$347K
NVS icon
336
Novartis
NVS
$288B
$8.78M 0.03%
86,983
-1,781
-2% -$178K
AMP icon
337
Ameriprise Financial
AMP
$50.4B
$8.75M 0.03%
26,351
-2,372
-8% -$729K
SDVY icon
338
First Trust SMID Cap Rising Dividend Achievers ETF
SDVY
$11.8B
$8.74M 0.03%
308,805
+141,105
+84% +$3.74M
DUK icon
339
Duke Energy
DUK
$97.1B
$8.73M 0.03%
97,268
-567
-0.6% -$53.5K
GDYN icon
340
Grid Dynamics Holdings
GDYN
$644M
$8.66M 0.03%
935,942
+49,795
+6% +$499K
PHR icon
341
Phreesia
PHR
$780M
$8.59M 0.03%
277,123
+72,997
+36% +$2.29M
ADI icon
342
Analog Devices
ADI
$186B
$8.57M 0.03%
43,996
+1,351
+3% +$250K
CBOE icon
343
Cboe Global Markets
CBOE
$30.6B
$8.51M 0.03%
61,638
+2,560
+4% +$349K
CNI icon
344
Canadian National Railway
CNI
$77.2B
$8.48M 0.03%
70,024
+18,613
+36% +$2.21M
OPCH icon
345
Option Care Health
OPCH
$3.61B
$8.38M 0.03%
257,955
-8,264
-3% -$249K
ADM icon
346
Archer Daniels Midland
ADM
$38.6B
$8.31M 0.03%
109,977
-22,422
-17% -$1.7M
NEO icon
347
NeoGenomics
NEO
$2.11B
$8.3M 0.03%
516,669
-15,002
-3% -$247K
BABA icon
348
Alibaba
BABA
$293B
$8.27M 0.03%
99,271
+2,223
+2% +$195K
SLB icon
349
SLB Ltd
SLB
$77.3B
$8.14M 0.03%
165,746
-10,915
-6% -$520K
GXO icon
350
GXO Logistics
GXO
$5.56B
$8.08M 0.03%
128,672
+8,288
+7% +$465K
12 13
14
15 16

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William Blair & Company's Q2 2023 Portfolio in Review

As of Q2 2023, William Blair & Company held 1,897 positions worth $27.3B, up 9% from $25B the previous quarter. Its ten largest holdings account for 24% of the portfolio.

William Blair & Company's Q2 2023 filing shows 97 new, 682 increased, 737 reduced and 88 closed positions. Its largest new stake was Innovator US Equity Power Buffer ETF April: 112,249 shares worth $3.47M. The largest sale was Neurocrine Biosciences, an estimated $29.1M.

By sector, the portfolio is most concentrated in Technology at 26% of assets, up from 25% a quarter earlier, followed by Healthcare and Industrials.

  • William Blair & Company's largest Q2 2023 buy was Innovator US Equity Power Buffer ETF April: 112,249 shares worth $3.47M.
  • William Blair & Company added most to Costco in Q2 2023, an estimated $28.3M increase.
  • William Blair & Company's biggest Q2 2023 reduction was Neurocrine Biosciences, cutting an estimated $29.1M.
  • William Blair & Company fully exited ABB Ltd in Q2 2023, selling an estimated $7.21M.
  • William Blair & Company's ten largest holdings make up 24% of its $27.3B portfolio in Q2 2023.
  • William Blair & Company opened 97 new positions and closed 88 in Q2 2023.
  • William Blair & Company's portfolio value rose 9% quarter-over-quarter to $27.3B.

Based on William Blair & Company's 13F filing for Q2 2023, filed 11 Aug 2023.