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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
MCHP icon
276
Microchip Technology
MCHP
$43.1B
$13.6M 0.04%
281,466
-389,821
-58% -$21.7M
SMMD icon
277
iShares Russell 2500 ETF
SMMD
$3.75B
$13.6M 0.04%
217,804
-4,941
-2% -$333K
GDX icon
278
VanEck Gold Miners ETF
GDX
$27.8B
$13.6M 0.04%
296,149
-19,505
-6% -$789K
NEOG icon
279
Neogen
NEOG
$2.5B
$13.6M 0.04%
1,563,823
-1,526,191
-49% -$16M
IVW icon
280
iShares S&P 500 Growth ETF
IVW
$77.3B
$13.6M 0.04%
146,033
+1,791
+1% +$181K
DOV icon
281
Dover
DOV
$28B
$13.4M 0.04%
76,412
-429
-0.6% -$82.5K
VRRM icon
282
Verra Mobility
VRRM
$714M
$13.4M 0.04%
593,855
-49,671
-8% -$1.2M
VB icon
283
Vanguard Morningstar Small-Cap ETF
VB
$83B
$13.2M 0.04%
59,415
-37
-0.1% -$8.84K
MKC icon
284
McCormick & Company Non-Voting
MKC
$14.2B
$13.1M 0.04%
159,292
-169,571
-52% -$13.3M
VRTX icon
285
Vertex Pharmaceuticals
VRTX
$133B
$13M 0.04%
26,845
+201
+0.8% +$93.7K
TRGP icon
286
Targa Resources
TRGP
$57.6B
$12.9M 0.04%
64,409
+44,993
+232% +$8.93M
CI icon
287
Cigna
CI
$73.3B
$12.8M 0.04%
38,894
-1,511
-4% -$455K
EOG icon
288
EOG Resources
EOG
$75.1B
$12.8M 0.04%
99,539
-3,896
-4% -$501K
YETI icon
289
Yeti Holdings
YETI
$3.85B
$12.7M 0.04%
385,000
-9,599
-2% -$348K
MMM icon
290
3M
MMM
$94.8B
$12.7M 0.04%
86,264
+3,645
+4% +$536K
NKE icon
291
Nike
NKE
$60.1B
$12.6M 0.04%
199,060
-43,604
-18% -$3.21M
CODI icon
292
Compass Diversified
CODI
$908M
$12.6M 0.04%
674,319
+26,932
+4% +$556K
VLTO icon
293
Veralto
VLTO
$23.6B
$12.5M 0.04%
128,701
-7,947
-6% -$793K
BKNG icon
294
Booking.com
BKNG
$159B
$12.5M 0.04%
67,700
-1,025
-1% -$196K
CCOI icon
295
Cogent Communications
CCOI
$525M
$12.5M 0.04%
203,297
-5,476
-3% -$404K
VXF icon
296
Vanguard Extended Market ETF
VXF
$32.1B
$12.4M 0.04%
72,208
+1,931
+3% +$365K
APPF icon
297
AppFolio
APPF
$6.97B
$12.4M 0.04%
56,493
-200
-0.4% -$45.9K
BABA icon
298
Alibaba
BABA
$300B
$12.3M 0.04%
93,217
+4,219
+5% +$486K
AMAT icon
299
Applied Materials
AMAT
$435B
$12.3M 0.04%
84,791
+1,727
+2% +$290K
GDYN icon
300
Grid Dynamics Holdings
GDYN
$632M
$12.3M 0.04%
786,105
+5,903
+0.8% +$118K
10 11
12
13 14

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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.