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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
FUSB icon
826
First US Bancshares
FUSB
$90.7M
$1.09M ﹤0.01%
105,910
+74
+0.1% +$663
BIP icon
827
Brookfield Infrastructure Partners
BIP
$18.4B
$1.09M ﹤0.01%
34,553
-7,900
-19% -$214K
VKTX icon
828
Viking Therapeutics
VKTX
$3.84B
$1.09M ﹤0.01%
58,372
-32,173
-36% -$421K
MP icon
829
MP Materials
MP
$9.91B
$1.09M ﹤0.01%
54,724
+2,000
+4% +$34.1K
GCMG icon
830
GCM Grosvenor
GCMG
$2.85B
$1.09M ﹤0.01%
121,235
+20,312
+20% +$169K
ANSS
831
DELISTED
Ansys
ANSS
$1.08M ﹤0.01%
2,979
+85
+3% +$25.2K
LEG icon
832
Leggett & Platt
LEG
$1.32B
$1.07M ﹤0.01%
41,014
+22
+0.1% +$540
CIEN icon
833
Ciena
CIEN
$62.7B
$1.07M ﹤0.01%
23,813
– –
NBIX icon
834
Neurocrine Biosciences
NBIX
$15.3B
$1.07M ﹤0.01%
8,118
-562
-6% -$64.7K
QDEF icon
835
FlexShares Quality Dividend Defensive Index Fund
QDEF
$564M
$1.07M ﹤0.01%
18,103
-1,956
-10% -$110K
BJUL icon
836
Innovator US Equity Buffer ETF July
BJUL
$355M
$1.07M ﹤0.01%
28,381
– –
VXUS icon
837
Vanguard Total International Stock ETF
VXUS
$164B
$1.07M ﹤0.01%
18,394
-2,667
-13% -$146K
SLCA
838
DELISTED
U.S. SILICA HOLDINGS, INC.
SLCA
$1.06M ﹤0.01%
94,150
-2,230
-2% -$26.4K
ACI icon
839
Albertsons Companies
ACI
$6.02B
$1.06M ﹤0.01%
46,056
-270
-0.6% -$5.96K
QTEC icon
840
First Trust NASDAQ-100 Technology Index Fund
QTEC
$4.92B
$1.06M ﹤0.01%
6,033
– –
HURN icon
841
Huron Consulting
HURN
$2.47B
$1.06M ﹤0.01%
10,294
+89
+0.9% +$9.14K
HDB icon
842
HDFC Bank
HDB
$119B
$1.05M ﹤0.01%
31,396
+1,978
+7% +$59.7K
SPEM icon
843
State Street SPDR Portfolio Emerging Markets ETF
SPEM
$17.7B
$1.05M ﹤0.01%
29,671
+1,022
+4% +$34.8K
IEF icon
844
iShares 7-10 Year Treasury Bond ETF
IEF
$47.3B
$1.05M ﹤0.01%
10,898
-11,973
-52% -$1.11M
TWI icon
845
Titan International
TWI
$438M
$1.04M ﹤0.01%
70,100
– –
EBAY icon
846
eBay
EBAY
$46.5B
$1.04M ﹤0.01%
23,860
-597
-2% -$24.7K
BBAX icon
847
JPMorgan BetaBuilders Developed Asia Pacific-ex Japan ETF
BBAX
$6.78B
$1.04M ﹤0.01%
20,964
-290
-1% -$13.3K
HYD icon
848
VanEck High Yield Muni ETF
HYD
$4.42B
$1.03M ﹤0.01%
20,000
-317
-2% -$15.7K
NDAQ icon
849
Nasdaq
NDAQ
$54.6B
$1.03M ﹤0.01%
17,728
+1,982
+13% +$104K
UEC icon
850
Uranium Energy
UEC
$5.54B
$1.03M ﹤0.01%
160,500
– –
32 33
34
35 36

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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.