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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
ODFL icon
601
Old Dominion Freight Line
ODFL
$45.2B
$3.16M 0.01%
19,072
-3,850
-17% -$700K
QQQM icon
602
Invesco NASDAQ 100 ETF
QQQM
$104B
$3.15M 0.01%
16,320
+5,765
+55% +$1.21M
DXJ icon
603
WisdomTree Japan Hedged Equity Fund
DXJ
$7.55B
$3.15M 0.01%
28,555
-120
-0.4% -$13.2K
IWS icon
604
iShares Russell Mid-Cap Value ETF
IWS
$16B
$3.09M 0.01%
24,528
-396
-2% -$51.6K
PMAR icon
605
Innovator US Equity Power Buffer ETF March
PMAR
$770M
$3.09M 0.01%
77,257
+5,917
+8% +$240K
SPYG icon
606
State Street SPDR Portfolio S&P 500 Growth ETF
SPYG
$55.5B
$3.08M 0.01%
38,370
+3,764
+11% +$329K
CASY icon
607
Casey's General Stores
CASY
$31.5B
$3.08M 0.01%
7,100
+5,652
+390% +$2.32M
DEO icon
608
Diageo
DEO
$52.7B
$3.07M 0.01%
29,327
-13,549
-32% -$1.53M
STZ icon
609
Constellation Brands
STZ
$23.2B
$3.05M 0.01%
16,639
-10,806
-39% -$1.96M
JAMF
610
DELISTED
Jamf
JAMF
$3.04M 0.01%
250,562
+23,411
+10% +$336K
U icon
611
Unity
U
$19.7B
$3.04M 0.01%
154,958
+12,242
+9% +$276K
HAL icon
612
Halliburton
HAL
$27.4B
$3.02M 0.01%
119,065
+9,890
+9% +$260K
PLD icon
613
Prologis
PLD
$134B
$3.01M 0.01%
26,941
+1,593
+6% +$184K
ED icon
614
Consolidated Edison
ED
$40B
$3M 0.01%
27,105
-1,414
-5% -$139K
ALNY icon
615
Alnylam Pharmaceuticals
ALNY
$30.3B
$2.99M 0.01%
11,078
-884
-7% -$227K
PRU icon
616
Prudential Financial
PRU
$42.8B
$2.99M 0.01%
26,773
-513
-2% -$58.5K
VDC icon
617
Vanguard Consumer Staples ETF
VDC
$8.01B
$2.99M 0.01%
13,657
-31
-0.2% -$6.7K
HCA icon
618
HCA Healthcare
HCA
$88.8B
$2.96M 0.01%
8,575
-175
-2% -$56.3K
COO icon
619
Cooper Companies
COO
$14.9B
$2.96M 0.01%
35,059
-4,278
-11% -$383K
IBB icon
620
iShares Biotechnology ETF
IBB
$9.81B
$2.95M 0.01%
23,081
-686
-3% -$93K
ITT icon
621
ITT
ITT
$19.3B
$2.95M 0.01%
22,838
-513
-2% -$73.1K
VRT icon
622
Vertiv
VRT
$112B
$2.95M 0.01%
40,854
-33,304
-45% -$3.54M
ZNOV
623
Innovator Equity Defined Protection ETF - 1 Yr November
ZNOV
$105M
$2.94M 0.01%
117,529
– –
ADSK icon
624
Autodesk
ADSK
$51.8B
$2.94M 0.01%
11,247
+705
+7% +$201K
IDV icon
625
iShares International Select Dividend ETF
IDV
$8.53B
$2.93M 0.01%
94,543
-4,362
-4% -$128K
23 24
25
26 27

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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.