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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
FCCO icon
1201
First Community Corp
FCCO
$324M
$336K ﹤0.01%
15,620
– –
OTEX icon
1202
Open Text
OTEX
$5.93B
$335K ﹤0.01%
7,980
+35
+0.4% +$1.31K
WK icon
1203
Workiva
WK
$3.8B
$335K ﹤0.01%
3,302
+335
+11% +$32.3K
SKT icon
1204
Tanger
SKT
$4.43B
$335K ﹤0.01%
12,085
+9
+0.1% +$224
CFLT
1205
DELISTED
Confluent
CFLT
$335K ﹤0.01%
14,299
-3,571
-20% -$86.3K
RVLV icon
1206
Revolve Group
RVLV
$1.71B
$333K ﹤0.01%
20,084
+2
+0% +$30
SYM icon
1207
Symbotic
SYM
$5.48B
$331K ﹤0.01%
+6,440
New +$282K
DTM icon
1208
DT Midstream
DTM
$13.8B
$330K ﹤0.01%
6,015
-71
-1% -$3.91K
EPAC icon
1209
Enerpac Tool Group
EPAC
$1.89B
$329K ﹤0.01%
10,160
– –
VFC icon
1210
VF Corp
VFC
$5.79B
$327K ﹤0.01%
17,395
+2,926
+20% +$50.2K
ON icon
1211
ON Semiconductor
ON
$32.2B
$326K ﹤0.01%
3,902
+82
+2% +$6.44K
CPAY icon
1212
Corpay
CPAY
$27.6B
$326K ﹤0.01%
1,152
+74
+7% +$18.4K
ALLE icon
1213
Allegion
ALLE
$14.1B
$325K ﹤0.01%
2,568
+19
+0.7% +$2.03K
PSEC icon
1214
Prospect Capital
PSEC
$1.18B
$325K ﹤0.01%
54,275
– –
SKYY icon
1215
First Trust Cloud Computing ETF
SKYY
$3.34B
$324K ﹤0.01%
3,701
+80
+2% +$6.36K
CE icon
1216
Celanese
CE
$4.82B
$324K ﹤0.01%
+2,088
New +$272K
WRB icon
1217
W.R. Berkley
WRB
$26.1B
$324K ﹤0.01%
6,876
+87
+1% +$3.97K
AEE icon
1218
Ameren
AEE
$30.2B
$324K ﹤0.01%
4,479
-11
-0.2% -$837
SHLS icon
1219
Shoals Technologies Group
SHLS
$1.39B
$324K ﹤0.01%
20,845
+1,121
+6% +$17K
LAKE icon
1220
Lakeland Industries
LAKE
$120M
$324K ﹤0.01%
17,469
+736
+4% +$11.3K
FUTY icon
1221
Fidelity MSCI Utilities Index ETF
FUTY
$2.31B
$324K ﹤0.01%
7,925
-1,149
-13% -$45.1K
IYK icon
1222
iShares US Consumer Staples ETF
IYK
$1.43B
$323K ﹤0.01%
5,061
+60
+1% +$3.73K
EFAV icon
1223
iShares MSCI EAFE Min Vol Factor ETF
EFAV
$5.46B
$322K ﹤0.01%
4,638
-794
-15% -$52.6K
VPU
1224
Vanguard Utilities ETF
VPU
$8.51B
$318K ﹤0.01%
2,319
-156
-6% -$20.6K
AMBA icon
1225
Ambarella
AMBA
$3.62B
$315K ﹤0.01%
5,142
+28
+0.5% +$1.53K
47 48
49
50 51

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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.