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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
+14.12%
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
$29.3B
AUM Growth
+$3.27B
Cap. Flow
-$91M
Cap. Flow %
-0.31%
Top 10 Hldgs %
24.41%
Holding
1,872
New
83
Increased
624
Reduced
816
Closed
87

Top Buys

Rank Stock Value
1
GWRE icon
Guidewire Software
GWRE
+$37.5M
2
SCHW
Charles Schwab
SCHW
+$37.1M
3
VLTO icon
Veralto
VLTO
+$17.1M
4
VRTX icon
Vertex Pharmaceuticals
VRTX
+$16.7M
5
CSGP icon
CoStar Group
CSGP
+$16.3M

Top Sells

Rank Stock Value
1
DHR icon
Danaher
DHR
+$37.6M
2
IRTC icon
iRhythm Holdings
IRTC
+$26.7M
3
DE icon
Deere & Co
DE
+$22.6M
4
TOST icon
Toast
TOST
+$21.2M
5
KO icon
Coca-Cola
KO
+$20.3M

Sector Composition

Rank Sector Weight
1 Technology 26.35%
2 Healthcare 17.08%
3 Financials 12.09%
4 Industrials 11.7%
5 Consumer Discretionary 8.53%
Name Market Value Portfolio Weight Shares or Principal Change
in Stake 		Capital Flow
BDSX icon
1426
Biodesix
BDSX
$259M
$165K ﹤0.01%
4,490
+500
+13% +$15.7K
EWT icon
1427
iShares MSCI Taiwan ETF
EWT
$11.6B
$165K ﹤0.01%
3,585
– –
GSLC icon
1428
Goldman Sachs ActiveBeta US Large Cap Equity ETF
GSLC
$16.1B
$164K ﹤0.01%
1,750
+161
+10% +$14.1K
FV icon
1429
First Trust Dorsey Wright Focus 5 ETF
FV
$3.83B
$164K ﹤0.01%
3,175
+672
+27% +$31K
FBT icon
1430
First Trust NYSE Arca Biotechnology Index Fund
FBT
$2.81B
$163K ﹤0.01%
1,030
+5
+0.5% +$718
FREL icon
1431
Fidelity MSCI Real Estate Index ETF
FREL
$1.49B
$162K ﹤0.01%
6,088
+3,398
+126% +$80.9K
ETON icon
1432
Eton Pharmaceutcials
ETON
$1.17B
$162K ﹤0.01%
36,979
– –
RSPF icon
1433
Invesco S&P 500 Equal Weight Financials ETF
RSPF
$312M
$161K ﹤0.01%
2,750
+2,000
+267% +$106K
CXM icon
1434
Sprinklr
CXM
$1.58B
$161K ﹤0.01%
13,338
-737
-5% -$10.1K
TFPM icon
1435
Triple Flag Precious Metals
TFPM
$6.58B
$160K ﹤0.01%
12,000
– –
AEF
1436
abrdn Emerging Markets Equity Income Fund
AEF
$383M
$156K ﹤0.01%
30,445
-300
-1% -$1.44K
TDIV icon
1437
First Trust NASDAQ Technology Dividend Index Fund
TDIV
$4.48B
$155K ﹤0.01%
2,415
– –
SWIM icon
1438
Latham Group
SWIM
$899M
$155K ﹤0.01%
58,849
-28,204
-32% -$69.8K
MLPA icon
1439
Global X MLP ETF
MLPA
$2.28B
$154K ﹤0.01%
3,480
+122
+4% +$5.44K
DRVN icon
1440
Driven Brands
DRVN
$2.12B
$154K ﹤0.01%
10,775
-21,367
-66% -$266K
VONE icon
1441
Vanguard Russell 1000 ETF
VONE
$8.74B
$152K ﹤0.01%
700
– –
VONV icon
1442
Vanguard Russell 1000 Value ETF
VONV
$22.1B
$151K ﹤0.01%
2,076
-360
-15% -$24.4K
IVOV icon
1443
Vanguard S&P Mid-Cap 400 Value ETF
IVOV
$1.37B
$150K ﹤0.01%
1,722
– –
RWX icon
1444
State Street SPDR Dow Jones International Real Estate ETF
RWX
$268M
$147K ﹤0.01%
5,386
– –
EWY icon
1445
iShares MSCI South Korea ETF
EWY
$27.5B
$146K ﹤0.01%
2,234
+27
+1% +$1.64K
TLS icon
1446
Telos
TLS
$331M
$146K ﹤0.01%
40,000
-10,000
-20% -$33.2K
USIG icon
1447
iShares Broad USD Investment Grade Corporate Bond ETF
USIG
$17.4B
$143K ﹤0.01%
2,791
-2,748
-50% -$134K
PIII icon
1448
P3 Health Partners
PIII
$37.6M
$143K ﹤0.01%
2,027
– –
GLAD icon
1449
Gladstone Capital
GLAD
$451M
$143K ﹤0.01%
6,668
+53
+0.8% +$1.06K
DFAT icon
1450
Dimensional US Targeted Value ETF
DFAT
$14.8B
$142K ﹤0.01%
2,723
+77
+3% +$3.6K
56 57
58
59 60

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William Blair & Company's Q4 2023 Portfolio in Review

As of Q4 2023, William Blair & Company held 1,872 positions worth $29.3B, up 13% from $26.1B the previous quarter. Its ten largest holdings account for 24% of the portfolio.

William Blair & Company's Q4 2023 filing shows 83 new, 624 increased, 816 reduced and 87 closed positions. Its largest new stake was Veralto: 229,539 shares worth $18.9M. The largest sale was Danaher, an estimated $37.6M.

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

  • William Blair & Company's largest Q4 2023 buy was Veralto: 229,539 shares worth $18.9M.
  • William Blair & Company added most to Guidewire Software in Q4 2023, an estimated $37.5M increase.
  • William Blair & Company's biggest Q4 2023 reduction was Danaher, cutting an estimated $37.6M.
  • William Blair & Company fully exited Seagen Inc. Common Stock in Q4 2023, selling an estimated $13.8M.
  • William Blair & Company's ten largest holdings make up 24% of its $29.3B portfolio in Q4 2023.
  • William Blair & Company opened 83 new positions and closed 87 in Q4 2023.
  • William Blair & Company's portfolio value rose 13% quarter-over-quarter to $29.3B.

Based on William Blair & Company's 13F filing for Q4 2023, filed 12 Feb 2024.