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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
VUSB icon
351
Vanguard Ultra-Short Bond ETF
VUSB
$9.34B
$8.08M 0.03%
164,353
-30,266
-16% -$1.49M
ICLR icon
352
Icon
ICLR
$12.9B
$8M 0.03%
31,965
+1,808
+6% +$384K
C icon
353
Citigroup
C
$233B
$7.95M 0.03%
172,702
+3,654
+2% +$171K
DVN icon
354
Devon Energy
DVN
$48.8B
$7.88M 0.03%
163,095
+8,224
+5% +$413K
VBR icon
355
Vanguard Morningstar Small-Cap Value ETF
VBR
$38.2B
$7.87M 0.03%
47,594
-9,956
-17% -$1.57M
GLW icon
356
Corning
GLW
$137B
$7.86M 0.03%
224,269
-11,422
-5% -$375K
CP icon
357
Canadian Pacific Kansas City
CP
$82.6B
$7.77M 0.03%
96,175
+8,115
+9% +$641K
QNST icon
358
QuinStreet
QNST
$1.19B
$7.75M 0.03%
877,337
+154,720
+21% +$1.56M
STZ icon
359
Constellation Brands
STZ
$23.3B
$7.65M 0.03%
31,081
+798
+3% +$187K
IWO icon
360
iShares Russell 2000 Growth ETF
IWO
$15.1B
$7.55M 0.03%
31,123
-173
-0.6% -$39.7K
HUBB icon
361
Hubbell
HUBB
$26.8B
$7.48M 0.03%
22,564
– –
STKL
362
DELISTED
SunOpta
STKL
$7.48M 0.03%
1,117,711
+18,098
+2% +$136K
PHO icon
363
Invesco Water Resources ETF
PHO
$2.06B
$7.47M 0.03%
132,431
+719
+0.5% +$38.4K
CRSP icon
364
CRISPR Therapeutics
CRSP
$5.22B
$7.46M 0.03%
132,885
+3,670
+3% +$208K
HSY icon
365
Hershey
HSY
$37.4B
$7.39M 0.03%
29,599
-1,654
-5% -$434K
TEL icon
366
TE Connectivity
TEL
$62.2B
$7.39M 0.03%
52,699
+613
+1% +$77.5K
CB icon
367
Chubb
CB
$133B
$7.36M 0.03%
38,238
-5,738
-13% -$1.12M
CHD icon
368
Church & Dwight Co
CHD
$24B
$7.36M 0.03%
73,389
+1,731
+2% +$163K
WBA
369
DELISTED
Walgreens Boots Alliance
WBA
$7.34M 0.03%
257,594
-3,533
-1% -$115K
UL icon
370
Unilever
UL
$135B
$7.27M 0.03%
123,972
-95
-0.1% -$5.64K
VBK icon
371
Vanguard Morningstar Small-Cap Growth ETF
VBK
$24.9B
$7.26M 0.03%
31,601
-2,220
-7% -$483K
HUM icon
372
Humana
HUM
$46.2B
$7.06M 0.03%
15,796
+1,015
+7% +$511K
MRSH
373
Marsh
MRSH
$90B
$7.03M 0.03%
37,375
-634
-2% -$113K
USMV icon
374
iShares MSCI USA Min Vol Factor ETF
USMV
$24.6B
$7.01M 0.03%
94,317
-1,364
-1% -$99.7K
WPM icon
375
Wheaton Precious Metals
WPM
$59.9B
$6.98M 0.03%
161,514
-7,500
-4% -$356K
13 14
15
16 17

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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.