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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
MGC icon
1251
Vanguard Morningstar Mega Cap ETF
MGC
$10.4B
$295K ﹤0.01%
1,740
-367
-17% -$58.4K
R icon
1252
Ryder
R
$10.1B
$293K ﹤0.01%
2,550
+382
+18% +$40.2K
TRI icon
1253
Thomson Reuters
TRI
$44.5B
$293K ﹤0.01%
1,973
+66
+3% +$8.91K
SCS
1254
DELISTED
Steelcase
SCS
$293K ﹤0.01%
+21,665
New +$257K
IYZ icon
1255
iShares US Telecommunications ETF
IYZ
$1.24B
$293K ﹤0.01%
12,867
-65
-0.5% -$1.39K
LAD icon
1256
Lithia Motors
LAD
$8.28B
$292K ﹤0.01%
887
+202
+29% +$55.4K
ATO icon
1257
Atmos Energy
ATO
$28.7B
$291K ﹤0.01%
2,514
+269
+12% +$30.1K
DAR icon
1258
Darling Ingredients
DAR
$10.2B
$290K ﹤0.01%
5,828
+194
+3% +$8.81K
RBLX icon
1259
Roblox
RBLX
$26.4B
$290K ﹤0.01%
+6,342
New +$234K
MDYV icon
1260
State Street SPDR S&P 400 Mid Cap Value ETF
MDYV
$2.88B
$289K ﹤0.01%
3,944
-64
-2% -$4.23K
PWB icon
1261
Invesco Large Cap Growth ETF
PWB
$2.47B
$289K ﹤0.01%
3,713
– –
SYF icon
1262
Synchrony
SYF
$26.1B
$288K ﹤0.01%
+7,534
New +$238K
FUN icon
1263
Cedar Fair
FUN
$1.73B
$288K ﹤0.01%
7,228
– –
VIOO icon
1264
Vanguard S&P Small-Cap 600 ETF
VIOO
$4.34B
$288K ﹤0.01%
2,900
– –
POWI icon
1265
Power Integrations
POWI
$3.52B
$287K ﹤0.01%
3,494
– –
DOX icon
1266
Amdocs
DOX
$6.14B
$286K ﹤0.01%
3,259
+140
+4% +$11.7K
RELY icon
1267
Remitly
RELY
$5.26B
$286K ﹤0.01%
14,743
+900
+7% +$20.2K
VST icon
1268
Vistra
VST
$48.9B
$286K ﹤0.01%
+7,424
New +$258K
LNC icon
1269
Lincoln National
LNC
$8.57B
$285K ﹤0.01%
10,574
-5,118
-33% -$123K
STM icon
1270
STMicroelectronics
STM
$48.7B
$285K ﹤0.01%
5,684
+62
+1% +$2.77K
AYI icon
1271
Acuity Brands
AYI
$10.8B
$284K ﹤0.01%
1,387
+39
+3% +$7.04K
SIG icon
1272
Signet Jewelers
SIG
$3.61B
$284K ﹤0.01%
+2,648
New +$217K
SFM icon
1273
Sprouts Farmers Market
SFM
$7.74B
$284K ﹤0.01%
+5,893
New +$258K
SOVO
1274
DELISTED
Sovos Brands, Inc. Common Stock
SOVO
$283K ﹤0.01%
12,834
– –
VOX icon
1275
Vanguard Communication Services ETF
VOX
$5.84B
$282K ﹤0.01%
2,396
+39
+2% +$4.31K
49 50
51
52 53

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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.