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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
ADSK icon
526
Autodesk
ADSK
$54.5B
$3.42M 0.01%
16,718
-87
-0.5% -$17.4K
BND icon
527
Vanguard Total Bond Market
BND
$162B
$3.42M 0.01%
47,056
-4,288
-8% -$314K
PRAA icon
528
PRA Group
PRAA
$762M
$3.41M 0.01%
149,339
-6,102
-4% -$169K
CARR icon
529
Carrier Global
CARR
$52.2B
$3.41M 0.01%
68,645
+6,098
+10% +$268K
BROS icon
530
Dutch Bros
BROS
$8.93B
$3.41M 0.01%
119,725
+60,500
+102% +$1.79M
IGSB icon
531
iShares 1-5 Year Investment Grade Corporate Bond ETF
IGSB
$23.4B
$3.41M 0.01%
67,886
-2,076
-3% -$105K
CLBT icon
532
Cellebrite
CLBT
$2.69B
$3.4M 0.01%
472,863
-5,948
-1% -$34.7K
DSI icon
533
iShares MSCI KLD 400 Social ETF
DSI
$5.58B
$3.38M 0.01%
40,135
-475
-1% -$37.8K
XLI icon
534
State Street Industrial Select Sector SPDR ETF
XLI
$34.7B
$3.37M 0.01%
31,376
-22,764
-42% -$2.29M
ABCM
535
DELISTED
Abcam PLC
ABCM
$3.34M 0.01%
+136,685
New +$2.36M
PRFT
536
DELISTED
Perficient Inc
PRFT
$3.32M 0.01%
39,885
-1,585
-4% -$117K
SHEL icon
537
Shell
SHEL
$248B
$3.31M 0.01%
54,800
+6,806
+14% +$408K
GM icon
538
General Motors
GM
$75.8B
$3.31M 0.01%
85,787
+2,864
+3% +$99K
RBC icon
539
RBC Bearings
RBC
$17.5B
$3.31M 0.01%
15,206
+4,915
+48% +$1.07M
SOXX icon
540
iShares Semiconductor ETF
SOXX
$46.6B
$3.3M 0.01%
19,533
-48
-0.2% -$7.2K
GSHD icon
541
Goosehead Insurance
GSHD
$2.39B
$3.28M 0.01%
52,144
-1,526
-3% -$87.8K
MANH icon
542
Manhattan Associates
MANH
$11.7B
$3.26M 0.01%
16,332
-24,775
-60% -$4.3M
BWXT icon
543
BWX Technologies
BWXT
$15.6B
$3.25M 0.01%
45,390
+978
+2% +$63.9K
ICLN icon
544
iShares Global Clean Energy ETF
ICLN
$2.11B
$3.22M 0.01%
175,220
-20,476
-10% -$385K
VOT icon
545
Vanguard Morningstar Mid-Cap Growth ETF
VOT
$20.3B
$3.21M 0.01%
15,596
-4,009
-20% -$777K
VOOV icon
546
Vanguard S&P 500 Value ETF
VOOV
$6.8B
$3.21M 0.01%
20,590
-85
-0.4% -$12.7K
BMRN icon
547
BioMarin Pharmaceuticals
BMRN
$13.3B
$3.19M 0.01%
36,847
+299
+0.8% +$28.1K
PEN icon
548
Penumbra
PEN
$12.9B
$3.19M 0.01%
9,278
-1,008
-10% -$310K
ESGV icon
549
Vanguard ESG US Stock ETF
ESGV
$13.7B
$3.19M 0.01%
40,686
-615
-1% -$45.3K
SCHB icon
550
Schwab US Broad Market ETF
SCHB
$45.2B
$3.19M 0.01%
184,971
-1,257
-0.7% -$20.5K
20 21
22
23 24

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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.