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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
IXN icon
1176
iShares Global Tech ETF
IXN
$9.47B
$372K ﹤0.01%
4,917
-50
-1% -$4.14K
BOCT icon
1177
Innovator US Equity Buffer ETF October
BOCT
$290M
$372K ﹤0.01%
8,857
– –
MGEE icon
1178
MGE Energy Inc
MGEE
$3.06B
$372K ﹤0.01%
4,000
– –
LW icon
1179
Lamb Weston
LW
$7.39B
$371K ﹤0.01%
6,960
-170
-2% -$9.63K
FUL icon
1180
H.B. Fuller
FUL
$3.24B
$371K ﹤0.01%
6,606
+601
+10% +$35.5K
HAYW icon
1181
Hayward Holdings
HAYW
$3.24B
$368K ﹤0.01%
26,449
+5,513
+26% +$80.1K
HEEM icon
1182
iShares Currency Hedged MSCI Emerging Markets
HEEM
$293M
$365K ﹤0.01%
13,007
-4,104
-24% -$115K
TDVG icon
1183
T. Rowe Price Dividend Growth ETF
TDVG
$1.45B
$365K ﹤0.01%
9,035
+74
+0.8% +$3.02K
R icon
1184
Ryder
R
$10.1B
$364K ﹤0.01%
2,531
-3
-0.1% -$467
GL icon
1185
Globe Life
GL
$14B
$361K ﹤0.01%
2,739
– –
CNO icon
1186
CNO Financial Group
CNO
$5.07B
$359K ﹤0.01%
8,622
+1
+0% +$40
LBRDK icon
1187
Liberty Broadband Class C
LBRDK
$5.29B
$358K ﹤0.01%
+4,206
New +$338K
PWB icon
1188
Invesco Large Cap Growth ETF
PWB
$2.45B
$357K ﹤0.01%
3,713
– –
RELX icon
1189
RELX
RELX
$60.4B
$356K ﹤0.01%
7,058
-653
-8% -$32K
SLYG icon
1190
State Street SPDR S&P 600 Small Cap Growth ETF
SLYG
$5.23B
$353K ﹤0.01%
4,254
+353
+9% +$31.5K
FCCO icon
1191
First Community Corp
FCCO
$325M
$352K ﹤0.01%
15,620
– –
MRP
1192
Millrose Properties Inc
MRP
$5.02B
$351K ﹤0.01%
+13,244
New +$310K
IPAY icon
1193
Amplify Mobile Payments ETF
IPAY
$188M
$350K ﹤0.01%
6,575
+460
+8% +$26.5K
MLPX icon
1194
Global X MLP & Energy Infrastructure ETF
MLPX
$3.56B
$349K ﹤0.01%
5,465
– –
ACI icon
1195
Albertsons Companies
ACI
$6.02B
$347K ﹤0.01%
15,782
-564
-3% -$11.6K
SMIG icon
1196
Bahl & Gaynor Small/Mid Cap Income Growth ETF
SMIG
$1.51B
$347K ﹤0.01%
12,162
+521
+4% +$15.3K
CORZW icon
1197
Core Scientific Inc Tranche 1 Warrants
CORZW
$1.29B
$347K ﹤0.01%
114,509
– –
TRI icon
1198
Thomson Reuters
TRI
$46B
$347K ﹤0.01%
1,976
-155
-7% -$26.8K
TXT icon
1199
Textron
TXT
$15.1B
$346K ﹤0.01%
4,786
-1,708
-26% -$128K
MTX icon
1200
Minerals Technologies
MTX
$2.26B
$345K ﹤0.01%
5,430
-227
-4% -$16.2K
46 47
48
49 50

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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.