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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
IJT icon
726
iShares S&P Small-Cap 600 Growth ETF
IJT
$8.43B
$1.59M 0.01%
12,687
-372
-3% -$41.7K
IQV icon
727
IQVIA
IQV
$39.4B
$1.57M 0.01%
6,806
-1,106
-14% -$227K
BBEU icon
728
JPMorgan BetaBuilders Europe ETF
BBEU
$9.52B
$1.56M 0.01%
27,604
+5,236
+23% +$275K
JEPQ icon
729
JPMorgan Nasdaq Equity Premium Income ETF
JEPQ
$41.9B
$1.56M 0.01%
31,181
+29,996
+2,531% +$1.45M
CDNS icon
730
Cadence Design Systems
CDNS
$89.8B
$1.55M 0.01%
5,678
+107
+2% +$27.6K
AWK icon
731
American Water Works
AWK
$27.2B
$1.54M 0.01%
11,669
+459
+4% +$57.9K
SCHX icon
732
Schwab US Large- Cap ETF
SCHX
$74.9B
$1.54M 0.01%
81,894
+32,175
+65% +$565K
NTAP icon
733
NetApp
NTAP
$40.1B
$1.54M 0.01%
17,421
-3,473
-17% -$280K
SCHR
734
Schwab Intermediately-Term US Treasury ETF
SCHR
$13.4B
$1.53M 0.01%
61,560
+10,582
+21% +$256K
PFF icon
735
iShares Preferred and Income Securities ETF
PFF
$13.3B
$1.53M 0.01%
49,035
-5,875
-11% -$176K
SSNC icon
736
SS&C Technologies
SSNC
$18.9B
$1.51M 0.01%
24,781
+6,564
+36% +$359K
AFL icon
737
Aflac
AFL
$60.7B
$1.51M 0.01%
18,311
+438
+2% +$35.3K
K
738
DELISTED
Kellanova
K
$1.49M 0.01%
26,734
-1,784
-6% -$93.2K
SBDS
739
DELISTED
Solo Brands Inc
SBDS
$1.49M 0.01%
6,060
-804
-12% -$157K
WMB icon
740
Williams Companies
WMB
$90.1B
$1.49M 0.01%
42,840
+5,558
+15% +$195K
WTW icon
741
Willis Towers Watson
WTW
$30.8B
$1.49M 0.01%
6,177
-2,180
-26% -$504K
TFC icon
742
Truist Financial
TFC
$64.7B
$1.48M 0.01%
40,206
-5,154
-11% -$162K
CHTR icon
743
Charter Communications
CHTR
$18.3B
$1.48M 0.01%
3,808
-206
-5% -$84K
GPC icon
744
Genuine Parts
GPC
$18.5B
$1.47M 0.01%
10,633
-1,458
-12% -$200K
DGX icon
745
Quest Diagnostics
DGX
$26.1B
$1.47M 0.01%
10,646
-739
-6% -$97.2K
IOT icon
746
Samsara
IOT
$23.1B
$1.46M 0.01%
+43,785
New +$1.22M
MORN icon
747
Morningstar
MORN
$7.45B
$1.45M 0.01%
5,079
-909
-15% -$237K
XLB icon
748
State Street Materials Select Sector SPDR ETF
XLB
$8.56B
$1.45M ﹤0.01%
33,908
-2,812
-8% -$112K
FLOT icon
749
iShares Floating Rate Bond ETF
FLOT
$10.5B
$1.44M ﹤0.01%
28,420
-39,230
-58% -$1.99M
SPDW icon
750
State Street SPDR Portfolio Developed World ex-US ETF
SPDW
$42.1B
$1.44M ﹤0.01%
42,244
-5,530
-12% -$176K
28 29
30
31 32

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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.