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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
SNAP icon
1826
Snap
SNAP
$8.79B
– –
-13,122
Closed -$117K
SPCE icon
1827
Virgin Galactic
SPCE
$500M
– –
-9,006
Closed -$324K
SPHY icon
1828
State Street SPDR Portfolio High Yield Bond ETF
SPHY
$12B
– –
-19
Closed -$437
SPMB icon
1829
State Street SPDR Portfolio Mortgage Backed Bond ETF
SPMB
$7.05B
– –
-12
Closed -$252
TASK icon
1830
TaskUs
TASK
$634M
– –
-31,989
Closed -$332K
TDW icon
1831
Tidewater
TDW
$4.56B
– –
-4,106
Closed -$292K
TDY icon
1832
Teledyne Technologies
TDY
$31.8B
– –
-6,277
Closed -$2.56M
THO icon
1833
Thor Industries
THO
$4.11B
– –
-2,551
Closed -$243K
TIXT
1834
DELISTED
TELUS International
TIXT
– –
-26,547
Closed -$202K
TWO
1835
Two Harbors Investment
TWO
$1.27B
– –
-10,321
Closed -$137K
VUZI icon
1836
Vuzix
VUZI
$218M
– –
-14,817
Closed -$53.8K
WHR icon
1837
Whirlpool
WHR
$2.79B
– –
-9,125
Closed -$1.22M
WIP icon
1838
State Street SPDR FTSE International Government Inflation-Protected Bond ETF
WIP
$474M
– –
-2,302
Closed -$89.6K
EXE
1839
Expand Energy Corp
EXE
$22.3B
– –
-2,770
Closed -$239K
LGF.A
1840
DELISTED
Lions Gate Entertainment Corp. Class A Voting Shares
LGF.A
– –
-1,500
Closed -$12.7K
TWOU
1841
DELISTED
2U Inc
TWOU
– –
-2,164
Closed -$160K
AIRC
1842
DELISTED
Apartment Income REIT Corp.
AIRC
– –
-22,613
Closed -$694K
FSR
1843
DELISTED
Fisker Inc.
FSR
– –
-11,701
Closed -$75.1K
CHIK
1844
DELISTED
Global X MSCI China Information Technology ETF
CHIK
– –
-650
Closed -$9.36K
PNT
1845
DELISTED
POINT Biopharma Global Inc. Common Stock
PNT
– –
-250,528
Closed -$1.67M
IBDO
1846
DELISTED
iShares iBonds Dec 2023 Term Corporate ETF
IBDO
– –
-27,855
Closed -$706K
SGEN
1847
DELISTED
Seagen Inc. Common Stock
SGEN
– –
-65,117
Closed -$13.8M
ABCM
1848
DELISTED
Abcam PLC
ABCM
– –
-129,550
Closed -$2.93M
VMW
1849
DELISTED
VMware, Inc
VMW
– –
-5,035
Closed -$838K
SSU
1850
DELISTED
SIGNA Sports United N.V.
SSU
– –
-497,158
Closed -$137K
71 72 73
74
75

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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.