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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
NWL icon
1851
Newell Brands
NWL
$2.62B
– –
-16,229
Closed -$162K
OC icon
1852
Owens Corning
OC
$12.3B
– –
-1,483
Closed -$253K
OGN icon
1853
Organon & Co
OGN
$3.59B
– –
-11,275
Closed -$168K
ON icon
1854
ON Semiconductor
ON
$32.4B
– –
-4,239
Closed -$267K
PAYS icon
1855
Paysign
PAYS
$723M
– –
-15,120
Closed -$45.7K
PCEF icon
1856
Invesco CEF Income Composite ETF
PCEF
$818M
– –
-1,214
Closed -$23.3K
PECO icon
1857
Phillips Edison & Co
PECO
$5.17B
– –
-5,379
Closed -$201K
PIII icon
1858
P3 Health Partners
PIII
$38.9M
– –
-2,517
Closed -$28.3K
PIIIW icon
1859
P3 Health Partners Inc Warrant
PIIIW
$199K
– –
-7,765
Closed -$92
PLUS icon
1860
ePlus
PLUS
$2.32B
– –
-3,322
Closed -$245K
PNFP icon
1861
Pinnacle Financial Partners Inc
PNFP
$16.1B
– –
-1,750
Closed -$200K
PSR icon
1862
Invesco Active US Real Estate Fund
PSR
$59.2M
– –
-4
Closed -$361
QDEL icon
1863
QuidelOrtho
QDEL
$1.02B
– –
-24,937
Closed -$1.11M
QLTA icon
1864
iShares AAA-A Rated Corporate Bond ETF
QLTA
$1.21B
– –
-67
Closed -$3.13K
ROM icon
1865
ProShares Ultra Technology
ROM
$1.3B
– –
-52
Closed -$3.63K
RPD icon
1866
Rapid7
RPD
$827M
– –
-7,624
Closed -$307K
RS icon
1867
Reliance Steel & Aluminium
RS
$21.8B
– –
-903
Closed -$243K
SAN icon
1868
Banco Santander
SAN
$211B
– –
-45,234
Closed -$206K
SCJ icon
1869
iShares MSCI Japan Small-Cap ETF
SCJ
$264M
– –
-13
Closed -$934
SLVM icon
1870
Sylvamo
SLVM
$1.53B
– –
-3,024
Closed -$239K
SPLB icon
1871
State Street SPDR Portfolio Long Term Corporate Bond ETF
SPLB
$1.18B
– –
-174
Closed -$3.87K
SPXU icon
1872
ProShares UltraPro Short S&P 500
SPXU
$385M
– –
-8
Closed -$721
STNG icon
1873
Scorpio Tankers
STNG
$3.81B
– –
-5,025
Closed -$250K
TDTT icon
1874
FlexShares iBoxx 3-Year Target Duration TIPS Index Fund
TDTT
$2.53B
– –
-3,816
Closed -$90K
TEF
1875
DELISTED
Telefonica
TEF
– –
-61,874
Closed -$249K
72 73 74
75
76

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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.