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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
-1.82%
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
$33.2B
AUM Growth
-$1.22B
Cap. Flow
+$11.1M
Cap. Flow %
0.03%
Top 10 Hldgs %
23.77%
Holding
1,895
New
82
Increased
626
Reduced
808
Closed
94

Top Buys

Rank Stock Value
1
META icon
Meta Platforms (Facebook)
META
+$112M
2
AAON icon
Aaon
AAON
+$104M
3
GEV icon
GE Vernova
GEV
+$77.6M
4
QCOM icon
Qualcomm
QCOM
+$47M
5
WM icon
Waste Management
WM
+$44.3M

Top Sells

Rank Stock Value
1
INTU icon
Intuit
INTU
+$65.9M
2
POOL icon
Pool Corp
POOL
+$64.7M
3
DHR icon
Danaher
DHR
+$59.8M
4
ZTS icon
Zoetis
ZTS
+$57.9M
5
SCHW
Charles Schwab
SCHW
+$44.5M

Sector Composition

Rank Sector Weight
1 Technology 26.23%
2 Financials 14.3%
3 Healthcare 12.58%
4 Industrials 12.51%
5 Consumer Discretionary 7.94%
Name Market Value Portfolio Weight Shares or Principal Change
in Stake 		Capital Flow
AWK icon
726
American Water Works
AWK
$27.2B
$1.87M 0.01%
12,689
+871
+7% +$115K
RPM icon
727
RPM International
RPM
$14.5B
$1.87M 0.01%
16,148
+95
+0.6% +$11.5K
GOGO icon
728
Gogo Inc
GOGO
$383M
$1.86M 0.01%
216,069
-18,462
-8% -$144K
KEYS icon
729
Keysight
KEYS
$60.5B
$1.85M 0.01%
12,382
-374
-3% -$61.8K
ETR icon
730
Entergy
ETR
$49.8B
$1.85M 0.01%
21,686
+389
+2% +$32K
D icon
731
Dominion Energy
D
$60.3B
$1.85M 0.01%
32,925
-543
-2% -$29.9K
VIGL
732
DELISTED
Vigil Neuroscience
VIGL
$1.84M 0.01%
1,033,577
+709,677
+219% +$1.59M
GMS
733
DELISTED
GMS Inc
GMS
$1.83M 0.01%
25,000
-420
-2% -$33.5K
SPYV icon
734
State Street SPDR Portfolio S&P 500 Value ETF
SPYV
$36.8B
$1.83M 0.01%
35,763
+12,777
+56% +$663K
WBA
735
DELISTED
Walgreens Boots Alliance
WBA
$1.82M 0.01%
163,261
-9,444
-5% -$103K
BIIB icon
736
Biogen
BIIB
$31.1B
$1.82M 0.01%
13,283
+234
+2% +$33.5K
NTAP icon
737
NetApp
NTAP
$40.4B
$1.81M 0.01%
20,582
+2,531
+14% +$280K
DFUV icon
738
Dimensional US Marketwide Value ETF
DFUV
$16B
$1.8M 0.01%
43,642
+359
+0.8% +$15.1K
MPLX icon
739
MPLX
MPLX
$60.2B
$1.79M 0.01%
33,487
+14,967
+81% +$784K
FCNCA icon
740
First Citizens BancShares
FCNCA
$25.6B
$1.79M 0.01%
965
-15
-2% -$30.6K
EPAM icon
741
EPAM Systems
EPAM
$5.26B
$1.78M 0.01%
10,554
-626
-6% -$138K
APO icon
742
Apollo Global Management
APO
$84.2B
$1.78M 0.01%
12,989
-87,147
-87% -$13.4M
NGNE icon
743
Neurogene
NGNE
$729M
$1.77M 0.01%
151,180
+88,540
+141% +$1.54M
RWO icon
744
State Street SPDR Dow Jones Global Real Estate ETF
RWO
$1.29B
$1.76M 0.01%
40,300
+611
+2% +$26.7K
ERIE icon
745
Erie Indemnity
ERIE
$13.4B
$1.76M 0.01%
4,193
+90
+2% +$36.7K
MINT icon
746
PIMCO Enhanced Short Maturity Active Exchange-Traded Fund
MINT
$17.1B
$1.76M 0.01%
17,452
+1,225
+8% +$123K
PPA icon
747
Invesco Aerospace & Defense ETF
PPA
$8.7B
$1.75M 0.01%
14,979
-1,987
-12% -$234K
PEN icon
748
Penumbra
PEN
$12.9B
$1.74M 0.01%
6,522
+2,782
+74% +$753K
AEM icon
749
Agnico Eagle Mines
AEM
$91B
$1.73M 0.01%
15,987
-193
-1% -$18.5K
XLP icon
750
State Street Consumer Staples Select Sector SPDR ETF
XLP
$14.8B
$1.73M 0.01%
21,149
-2,714
-11% -$217K
28 29
30
31 32

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William Blair & Company's Q1 2025 Portfolio in Review

As of Q1 2025, William Blair & Company held 1,895 positions worth $33.2B, down 3.6% from $34.4B the previous quarter. Its ten largest holdings account for 24% of the portfolio.

William Blair & Company's Q1 2025 filing shows 82 new, 626 increased, 808 reduced and 94 closed positions. Its largest new stake was CCC Intelligent Solutions: 320,989 shares worth $2.9M. The largest sale was Intuit, an estimated $65.9M.

By sector, the portfolio is most concentrated in Technology at 26% of assets, down from 28% a quarter earlier, followed by Financials and Healthcare.

  • William Blair & Company's largest Q1 2025 buy was CCC Intelligent Solutions: 320,989 shares worth $2.9M.
  • William Blair & Company added most to Meta Platforms (Facebook) in Q1 2025, an estimated $112M increase.
  • William Blair & Company's biggest Q1 2025 reduction was Intuit, cutting an estimated $65.9M.
  • William Blair & Company fully exited Smartsheet Inc. in Q1 2025, selling an estimated $3.52M.
  • William Blair & Company's ten largest holdings make up 24% of its $33.2B portfolio in Q1 2025.
  • William Blair & Company opened 82 new positions and closed 94 in Q1 2025.
  • William Blair & Company's portfolio value fell 3.6% quarter-over-quarter to $33.2B.

Based on William Blair & Company's 13F filing for Q1 2025, filed 9 May 2025.