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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
WSC icon
476
WillScot Mobile Mini Holdings
WSC
$4.06B
$5.13M 0.02%
184,450
-4,765
-3% -$162K
SCHG icon
477
Schwab US Large-Cap Growth ETF
SCHG
$63.1B
$5.13M 0.02%
204,742
-4,039
-2% -$111K
CTVA icon
478
Corteva
CTVA
$50.5B
$5.09M 0.02%
80,910
+124
+0.2% +$7.67K
SITE icon
479
SiteOne Landscape Supply
SITE
$4.25B
$5.08M 0.02%
41,869
-334
-0.8% -$44.3K
TMDX icon
480
Transmedics
TMDX
$3.05B
$5.05M 0.02%
74,995
-105,569
-58% -$7.26M
SHY icon
481
iShares 1-3 Year Treasury Bond ETF
SHY
$25.5B
$5.04M 0.02%
60,888
+900
+2% +$74K
CACC icon
482
Credit Acceptance
CACC
$6.03B
$5.02M 0.02%
9,729
– –
CSX icon
483
CSX Corp
CSX
$93.6B
$5.02M 0.02%
170,528
+8,919
+6% +$283K
BOTZ icon
484
Global X Robotics & Artificial Intelligence ETF
BOTZ
$3.58B
$5M 0.02%
175,709
-3,840
-2% -$124K
IBN icon
485
ICICI Bank
IBN
$106B
$4.94M 0.01%
156,864
-2,211
-1% -$64.2K
XYL icon
486
Xylem
XYL
$28.2B
$4.94M 0.01%
41,331
-5,523
-12% -$684K
MOD icon
487
Modine Manufacturing
MOD
$10.6B
$4.91M 0.01%
63,993
+34,154
+114% +$3.37M
RELY icon
488
Remitly
RELY
$5.22B
$4.9M 0.01%
235,534
-9,597
-4% -$220K
XLU icon
489
State Street Utilities Select Sector SPDR ETF
XLU
$22.9B
$4.88M 0.01%
123,662
+14,968
+14% +$585K
POCT icon
490
Innovator US Equity Power Buffer ETF October
POCT
$975M
$4.87M 0.01%
125,277
– –
CCI icon
491
Crown Castle
CCI
$31.6B
$4.84M 0.01%
46,481
-1,106
-2% -$103K
LHX icon
492
L3Harris
LHX
$54B
$4.79M 0.01%
22,902
-7,851
-26% -$1.65M
DGRO icon
493
iShares Core Dividend Growth ETF
DGRO
$43.9B
$4.77M 0.01%
77,262
+15,259
+25% +$956K
ONT
494
Onterris Inc
ONT
$583M
$4.77M 0.01%
334,221
-312,391
-48% -$5.95M
IJUL icon
495
Innovator International Developed Power Buffer ETF July
IJUL
$258M
$4.76M 0.01%
163,355
-30,142
-16% -$870K
WELL icon
496
Welltower
WELL
$169B
$4.76M 0.01%
31,048
+1,834
+6% +$261K
CHKP icon
497
Check Point Software Technologies
CHKP
$13.3B
$4.73M 0.01%
20,736
+1,881
+10% +$399K
LYB icon
498
LyondellBasell Industries
LYB
$20B
$4.69M 0.01%
66,683
-2,201
-3% -$166K
SPT icon
499
Sprout Social
SPT
$587M
$4.69M 0.01%
213,437
-51,046
-19% -$1.48M
WEC icon
500
WEC Energy
WEC
$35.7B
$4.69M 0.01%
43,050
-1,216
-3% -$124K
18 19
20
21 22

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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.