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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
ALB icon
826
Albemarle
ALB
$15.4B
$1.04M ﹤0.01%
4,648
-559
-11% -$114K
HYD icon
827
VanEck High Yield Muni ETF
HYD
$4.42B
$1.03M ﹤0.01%
20,000
-215
-1% -$11K
IYR icon
828
iShares US Real Estate ETF
IYR
$4.58B
$1.03M ﹤0.01%
11,857
-2,202
-16% -$185K
PAYC icon
829
Paycom
PAYC
$10.1B
$1.02M ﹤0.01%
3,177
+711
+29% +$210K
TWKS
830
DELISTED
Thoughtworks Holding, Inc. Common Stock
TWKS
$1.02M ﹤0.01%
134,577
-2,493
-2% -$18.4K
PRU icon
831
Prudential Financial
PRU
$43B
$1.02M ﹤0.01%
11,514
-435
-4% -$36.4K
CIEN icon
832
Ciena
CIEN
$62.7B
$1.01M ﹤0.01%
23,813
-4
-0% -$182
RCL icon
833
Royal Caribbean
RCL
$82.9B
$1.01M ﹤0.01%
9,750
-321
-3% -$25.2K
DHS icon
834
WisdomTree US High Dividend Fund
DHS
$1.6B
$1.01M ﹤0.01%
12,645
– –
WBD icon
835
Warner Bros
WBD
$69.6B
$1.01M ﹤0.01%
80,201
-2,602
-3% -$33.8K
GTLS
836
DELISTED
Chart Industries
GTLS
$1M ﹤0.01%
6,287
-201
-3% -$25.7K
ACWV icon
837
iShares MSCI Global Min Vol Factor ETF
ACWV
$3.38B
$1M ﹤0.01%
10,231
-237
-2% -$23.3K
PSTX
838
DELISTED
Poseida Therapeutics, Inc. Common Stock
PSTX
$1M ﹤0.01%
568,740
+534,397
+1,556% +$1.37M
IXUS icon
839
iShares Core MSCI Total International Stock ETF
IXUS
$60.8B
$1M ﹤0.01%
15,980
-8,952
-36% -$560K
IWY icon
840
iShares Russell Top 200 Growth ETF
IWY
$16.7B
$996K ﹤0.01%
6,282
-26
-0.4% -$3.79K
SPSM icon
841
State Street SPDR Portfolio S&P 600 Small Cap ETF
SPSM
$17.6B
$991K ﹤0.01%
25,524
+22,517
+749% +$837K
NXPI icon
842
NXP Semiconductors
NXPI
$58.5B
$990K ﹤0.01%
4,839
-76
-2% -$13.5K
HDB icon
843
HDFC Bank
HDB
$119B
$988K ﹤0.01%
28,356
+460
+2% +$15.5K
BNY
844
Bank of New York Mellon
BNY
$110B
$987K ﹤0.01%
22,172
+689
+3% +$29.6K
VV icon
845
Vanguard Morningstar Large-Cap ETF
VV
$54.9B
$986K ﹤0.01%
4,865
-30
-0.6% -$5.75K
FFIC
846
DELISTED
Flushing Financial
FFIC
$984K ﹤0.01%
80,070
– –
KKR icon
847
KKR & Co
KKR
$103B
$979K ﹤0.01%
17,485
+5,710
+48% +$299K
SNY icon
848
Sanofi
SNY
$105B
$978K ﹤0.01%
18,149
+615
+4% +$33.1K
GKOS icon
849
Glaukos
GKOS
$11.2B
$973K ﹤0.01%
13,666
+100
+0.7% +$5.74K
IEI icon
850
iShares 3-7 Year Treasury Bond ETF
IEI
$17.7B
$972K ﹤0.01%
8,430
+2,224
+36% +$260K
32 33
34
35 36

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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.