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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
ACES icon
1676
ALPS Clean Energy ETF
ACES
$124M
$20.2K ﹤0.01%
447
+91
+26% +$3.97K
AAXJ icon
1677
iShares MSCI All Country Asia ex Japan ETF
AAXJ
$3.83B
$19.7K ﹤0.01%
296
+196
+196% +$13.1K
MODD icon
1678
Modular Medical
MODD
$11.2M
$19.6K ﹤0.01%
667
– –
MDYG icon
1679
State Street SPDR S&P 400 Mid Cap Growth ETF
MDYG
$2.96B
$19.4K ﹤0.01%
271
-240
-47% -$16.4K
AGZ icon
1680
iShares Agency Bond ETF
AGZ
$564M
$19.3K ﹤0.01%
+180
New +$19.4K
PEY icon
1681
Invesco High Yield Equity Dividend Achievers ETF
PEY
$1.16B
$19.2K ﹤0.01%
1,000
– –
VCLT icon
1682
Vanguard Long-Term Corporate Bond ETF
VCLT
$8.75B
$18.4K ﹤0.01%
234
– –
LBTYA icon
1683
Liberty Global Class A
LBTYA
$3.55B
$18.3K ﹤0.01%
1,086
-1,932
-64% -$34.3K
GLDG
1684
GoldMining Inc
GLDG
$223M
$18K ﹤0.01%
20,000
– –
SENS icon
1685
Senseonics Holdings Inc
SENS
$419M
$17.4K ﹤0.01%
1,140
– –
SPEU icon
1686
State Street SPDR Portfolio Europe ETF
SPEU
$742M
$16.8K ﹤0.01%
435
+300
+222% +$11.6K
SLYG icon
1687
State Street SPDR S&P 600 Small Cap Growth ETF
SLYG
$5.22B
$16.6K ﹤0.01%
216
-4
-2% -$292
FTXL icon
1688
First Trust Nasdaq Semiconductor ETF
FTXL
$1.36B
$15.7K ﹤0.01%
220
-110
-33% -$7.04K
IDU icon
1689
iShares US Utilities ETF
IDU
$1.37B
$15.6K ﹤0.01%
191
-200
-51% -$16.6K
INSG icon
1690
Inseego
INSG
$82.6M
$14.8K ﹤0.01%
2,300
-300
-12% -$2.4K
LNAI
1691
Lunai Bioworks
LNAI
$10.7M
$14.7K ﹤0.01%
325
– –
PSK icon
1692
State Street SPDR ICE Preferred Securities ETF
PSK
$683M
$14.4K ﹤0.01%
430
– –
SLQD icon
1693
iShares 0-5 Year Investment Grade Corporate Bond ETF
SLQD
$2.38B
$14.4K ﹤0.01%
298
-11
-4% -$532
QLTA icon
1694
iShares AAA-A Rated Corporate Bond ETF
QLTA
$1.21B
$14.3K ﹤0.01%
304
– –
PXH icon
1695
Invesco FTSE RAFI Emerging Markets ETF
PXH
$1.97B
$14.3K ﹤0.01%
769
+50
+7% +$927
SOCL icon
1696
Global X Social Media ETF
SOCL
$90.3M
$14.1K ﹤0.01%
385
– –
XTL icon
1697
State Street SPDR S&P Telecom ETF
XTL
$558M
$13.9K ﹤0.01%
179
– –
GLCN
1698
DELISTED
VanEck China Growth Leaders ETF
GLCN
$13.8K ﹤0.01%
600
– –
BWX icon
1699
State Street SPDR Bloomberg International Treasury Bond ETF
BWX
$1.31B
$13.4K ﹤0.01%
595
+424
+248% +$9.65K
LGF.A
1700
DELISTED
Lions Gate Entertainment Corp. Class A Voting Shares
LGF.A
$13.2K ﹤0.01%
+1,500
New +$15.8K
66 67
68
69 70

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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.