We are live on ! Find out more
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
QCOM icon
126
Qualcomm
QCOM
$171B
$47.5M 0.16%
328,689
-7,246
-2% -$897K
ALL icon
127
Allstate
ALL
$64.7B
$47.4M 0.16%
338,607
+83,069
+33% +$10.8M
MKC icon
128
McCormick & Company Non-Voting
MKC
$14.2B
$46.2M 0.16%
675,330
-38,952
-5% -$2.55M
GS icon
129
Goldman Sachs
GS
$302B
$44.4M 0.15%
115,089
+23,966
+26% +$8M
BMY icon
130
Bristol-Myers Squibb
BMY
$130B
$44.4M 0.15%
864,370
-264,198
-23% -$13.9M
TXN icon
131
Texas Instruments
TXN
$253B
$44.2M 0.15%
259,539
-15,386
-6% -$2.38M
CME icon
132
CME Group
CME
$94.3B
$43.5M 0.15%
206,770
-25
-0% -$5.33K
IT icon
133
Gartner
IT
$11.3B
$41.8M 0.14%
92,725
+139
+0.2% +$55.5K
HON icon
134
Honeywell
HON
$74.6B
$41.1M 0.14%
208,182
-3,512
-2% -$633K
LZ icon
135
LegalZoom.com
LZ
$930M
$41.1M 0.14%
3,640,880
+164,654
+5% +$1.79M
ITOT icon
136
iShares Core S&P Total US Stock Market ETF
ITOT
$97.8B
$40.8M 0.14%
387,490
+40,016
+12% +$3.92M
PTLO icon
137
Portillo's
PTLO
$345M
$39.8M 0.14%
2,498,916
+2,921
+0.1% +$45.1K
NKE icon
138
Nike
NKE
$60.1B
$39.6M 0.14%
364,872
-9,911
-3% -$1.07M
BAC icon
139
Bank of America
BAC
$453B
$39.4M 0.13%
1,169,025
-83,860
-7% -$2.44M
EMR icon
140
Emerson Electric
EMR
$91.4B
$38.5M 0.13%
395,990
-4,238
-1% -$388K
BLK icon
141
Blackrock
BLK
$180B
$38.5M 0.13%
47,454
-16,423
-26% -$11.5M
GILD icon
142
Gilead Sciences
GILD
$168B
$38M 0.13%
469,440
-2,160
-0.5% -$168K
BRK.A icon
143
Berkshire Hathaway Class A
BRK.A
$1.09T
$37.4M 0.13%
69
+2
+3% +$1.07M
CVS icon
144
CVS Health
CVS
$121B
$36.4M 0.12%
461,521
-12,177
-3% -$867K
CAT icon
145
Caterpillar
CAT
$393B
$36.2M 0.12%
122,481
-1,897
-2% -$492K
GNRC icon
146
Generac Holdings
GNRC
$13.1B
$35.8M 0.12%
277,146
-7,199
-3% -$790K
WST icon
147
West Pharmaceutical
WST
$24.8B
$35.5M 0.12%
100,696
+260
+0.3% +$92K
DV icon
148
DoubleVerify
DV
$2.04B
$35.2M 0.12%
956,481
+300,779
+46% +$9.37M
MRVL icon
149
Marvell Technology
MRVL
$195B
$34.4M 0.12%
569,644
+1,323
+0.2% +$71.5K
PXD
150
DELISTED
Pioneer Natural Resource Co.
PXD
$34.1M 0.12%
151,605
-1,209
-0.8% -$283K
4 5
6
7 8

Similar funds

Parallax Volatility Advisers
Parallax Volatility Advisers San Francisco, California $38.6B AUM 45.89% 1-Year Est. Return
Credit Agricole
Credit Agricole Montrouge Cedex, France $38.1B AUM
Carson Wealth (CWM LLC)
Carson Wealth (CWM LLC) Omaha, Nebraska $38.1B AUM 19.66% 1-Year Est. Return
Nomura Asset Management
Nomura Asset Management Tokyo, Japan $38.8B AUM 30.94% 1-Year Est. Return
Nomura Holdings
Nomura Holdings Tokyo, Japan $37.7B AUM 34.44% 1-Year Est. Return
Fayez Sarofim & Co
Fayez Sarofim & Co Houston, Texas $39.1B AUM 15.14% 1-Year Est. Return
Grantham, Mayo, Van Otterloo & Co (GMO)
Grantham, Mayo, Van Otterloo & Co (GMO) Boston, Massachusetts $39.1B AUM 28.69% 1-Year Est. Return
HF
HRT Financial New York $40.1B AUM 58.22% 1-Year Est. Return

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.