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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
+3.1%
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
$34.4B
AUM Growth
+$328M
Cap. Flow
-$18.6M
Cap. Flow %
-0.05%
Top 10 Hldgs %
25.12%
Holding
1,903
New
83
Increased
650
Reduced
792
Closed
87

Top Buys

Rank Stock Value
1
XYZ
Block Inc
XYZ
+$80.6M
2
BLK icon
Blackrock
BLK
+$53.4M
3
CWAN
Clearwater Analytics
CWAN
+$48.5M
4
NVDA icon
NVIDIA
NVDA
+$47.9M
5
BWXT icon
BWX Technologies
BWXT
+$47M

Top Sells

Rank Stock Value
1
DXCM icon
DexCom
DXCM
+$37.7M
2
CSGP icon
CoStar Group
CSGP
+$34.5M
3
VRTX icon
Vertex Pharmaceuticals
VRTX
+$30M
4
BAH icon
Booz Allen Hamilton
BAH
+$29.1M
5
IDXX icon
Idexx Laboratories
IDXX
+$26.6M

Sector Composition

Rank Sector Weight
1 Technology 28.35%
2 Financials 13.43%
3 Healthcare 12.44%
4 Industrials 11.81%
5 Consumer Discretionary 8.44%
Name Market Value Portfolio Weight Shares or Principal Change
in Stake 		Capital Flow
QCLN icon
1551
First Trust NASDAQ Clean Edge Green Energy Index Fund
QCLN
$632M
$75.4K ﹤0.01%
2,221
-400
-15% -$13.8K
TMCI icon
1552
Treace Medical Concepts
TMCI
$309M
$75K ﹤0.01%
10,080
– –
ARDX icon
1553
Ardelyx
ARDX
$1.03B
$75K ﹤0.01%
14,785
– –
SHYG icon
1554
iShares 0-5 Year High Yield Corporate Bond ETF
SHYG
$7.61B
$74.5K ﹤0.01%
1,749
+514
+42% +$22.1K
AOA icon
1555
iShares Core 80/20 Aggressive Allocation ETF
AOA
$3.28B
$72.2K ﹤0.01%
942
+89
+10% +$6.97K
DEM icon
1556
WisdomTree Emerging Markets High Dividend Fund
DEM
$3.97B
$72K ﹤0.01%
1,777
-288
-14% -$12.2K
AG icon
1557
First Majestic Silver
AG
$9.44B
$71.8K ﹤0.01%
13,071
-1,498
-10% -$9.67K
LRGF icon
1558
iShares US Equity Factor ETF
LRGF
$3.71B
$71.5K ﹤0.01%
1,185
– –
SCHC icon
1559
Schwab International Small-Cap Equity ETF
SCHC
$5.67B
$70.4K ﹤0.01%
2,052
+24
+1% +$874
FXH icon
1560
First Trust Health Care AlphaDEX Fund
FXH
$1.11B
$69.2K ﹤0.01%
665
-24
-3% -$2.61K
PIZ icon
1561
Invesco Dorsey Wright Developed Markets Momentum ETF
PIZ
$742M
$69K ﹤0.01%
1,900
– –
NAUG
1562
Innovator Growth-100 Power Buffer ETF - August
NAUG
$57.4M
$67.6K ﹤0.01%
2,625
– –
PIE icon
1563
Invesco Dorsey Wright Emerging Markets Momentum ETF
PIE
$250M
$67.3K ﹤0.01%
3,500
– –
IZRL icon
1564
ARK Israel Innovative Technology ETF
IZRL
$139M
$66.9K ﹤0.01%
2,990
– –
BBH icon
1565
VanEck Biotech ETF
BBH
$429M
$66.7K ﹤0.01%
425
– –
IGE icon
1566
iShares North American Natural Resources ETF
IGE
$786M
$66.7K ﹤0.01%
1,560
+4
+0.3% +$181
INTS icon
1567
Intensity Therapeutics
INTS
$11.2M
$66.5K ﹤0.01%
1,512
– –
FDIS icon
1568
Fidelity MSCI Consumer Discretionary Index ETF
FDIS
$1.71B
$66.4K ﹤0.01%
681
-87
-11% -$8.15K
EDIV icon
1569
State Street SPDR S&P Emerging Markets Dividend ETF
EDIV
$1.22B
$66.1K ﹤0.01%
1,874
+188
+11% +$6.79K
IAT icon
1570
iShares US Regional Banks ETF
IAT
$687M
$64.3K ﹤0.01%
1,277
-500
-28% -$25.8K
VCLT icon
1571
Vanguard Long-Term Corporate Bond ETF
VCLT
$8.75B
$63.9K ﹤0.01%
855
-105
-11% -$8.16K
RSPE icon
1572
Invesco ESG S&P 500 Equal Weight ETF
RSPE
$69.9M
$63.9K ﹤0.01%
2,416
– –
EWH icon
1573
iShares MSCI Hong Kong ETF
EWH
$1.21B
$63.7K ﹤0.01%
3,823
-1,285
-25% -$22.8K
SH icon
1574
ProShares Short S&P500
SH
$844M
$62.9K ﹤0.01%
1,485
+9
+0.6% +$383
FBT icon
1575
First Trust NYSE Arca Biotechnology Index Fund
FBT
$2.81B
$61.7K ﹤0.01%
371
+21
+6% +$3.59K
61 62
63
64 65

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William Blair & Company's Q4 2024 Portfolio in Review

As of Q4 2024, William Blair & Company held 1,903 positions worth $34.4B, up 0.96% from $34.1B the previous quarter. Its ten largest holdings account for 25% of the portfolio.

William Blair & Company's Q4 2024 filing shows 83 new, 650 increased, 792 reduced and 87 closed positions. Its largest new stake was Blackrock: 52,623 shares worth $53.9M. The largest sale was DexCom, an estimated $37.7M.

By sector, the portfolio is most concentrated in Technology at 28% of assets, up from 27% a quarter earlier, followed by Financials and Healthcare.

  • William Blair & Company's largest Q4 2024 buy was Blackrock: 52,623 shares worth $53.9M.
  • William Blair & Company added most to Block Inc in Q4 2024, an estimated $80.6M increase.
  • William Blair & Company's biggest Q4 2024 reduction was DexCom, cutting an estimated $37.7M.
  • William Blair & Company fully exited Rush Street Interactive in Q4 2024, selling an estimated $5.79M.
  • William Blair & Company's ten largest holdings make up 25% of its $34.4B portfolio in Q4 2024.
  • William Blair & Company opened 83 new positions and closed 87 in Q4 2024.
  • William Blair & Company's portfolio value rose 0.96% quarter-over-quarter to $34.4B.

Based on William Blair & Company's 13F filing for Q4 2024, filed 12 Feb 2025.