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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
+10.3%
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
$25B
AUM Growth
+$2.04B
Cap. Flow
+$116M
Cap. Flow %
0.46%
Top 10 Hldgs %
23.68%
Holding
1,879
New
69
Increased
680
Reduced
748
Closed
78

Top Buys

Rank Stock Value
1
NEOG icon
Neogen
NEOG
+$45.2M
2
PGR icon
Progressive
PGR
+$34.8M
3
TOST icon
Toast
TOST
+$33.8M
4
PWSC
PowerSchool Holdings, Inc.
PWSC
+$33.4M
5
UBER icon
Uber
UBER
+$30.4M

Top Sells

Rank Stock Value
1
GOOG icon
Alphabet (Google) Class C
GOOG
+$54.2M
2
LULU icon
lululemon athletica
LULU
+$53.4M
3
PYPL icon
PayPal
PYPL
+$45.8M
4
BAH icon
Booz Allen Hamilton
BAH
+$20.2M
5
GOOGL icon
Alphabet (Google) Class A
GOOGL
+$17.8M

Sector Composition

Rank Sector Weight
1 Technology 24.61%
2 Healthcare 19.42%
3 Financials 11.75%
4 Industrials 11.37%
5 Consumer Discretionary 8.4%
Name Market Value Portfolio Weight Shares or Principal Change
in Stake 		Capital Flow
WSC icon
401
WillScot Mobile Mini Holdings
WSC
$4B
$6.09M 0.02%
129,976
-210
-0.2% -$10.1K
GXO icon
402
GXO Logistics
GXO
$5.52B
$6.07M 0.02%
120,384
+1,006
+0.8% +$50.1K
CNI icon
403
Canadian National Railway
CNI
$76.4B
$6.06M 0.02%
51,411
+1,289
+3% +$152K
PRAA icon
404
PRA Group
PRAA
$737M
$6.06M 0.02%
155,441
-2,298
-1% -$90.2K
TCMD icon
405
Tactile Systems Technology
TCMD
$555M
$5.91M 0.02%
359,908
+180,488
+101% +$2.51M
VRRM icon
406
Verra Mobility
VRRM
$714M
$5.88M 0.02%
347,761
-412,775
-54% -$6.6M
IBB icon
407
iShares Biotechnology ETF
IBB
$9.86B
$5.85M 0.02%
45,285
+6,075
+15% +$795K
CRSP icon
408
CRISPR Therapeutics
CRSP
$5.22B
$5.84M 0.02%
129,215
+49,622
+62% +$2.41M
NUE icon
409
Nucor
NUE
$61.7B
$5.79M 0.02%
37,483
-3,571
-9% -$568K
SPG icon
410
Simon Property Group
SPG
$71.4B
$5.78M 0.02%
51,660
-771
-1% -$92.1K
VRTX icon
411
Vertex Pharmaceuticals
VRTX
$133B
$5.73M 0.02%
18,192
+548
+3% +$164K
SUB icon
412
iShares Short-Term National Muni Bond ETF
SUB
$11.4B
$5.71M 0.02%
54,533
-9,197
-14% -$960K
CTVA icon
413
Corteva
CTVA
$50.4B
$5.71M 0.02%
94,631
+517
+0.5% +$31.6K
LFUS icon
414
Littelfuse
LFUS
$11.7B
$5.69M 0.02%
21,212
-1,400
-6% -$360K
COP icon
415
ConocoPhillips
COP
$153B
$5.68M 0.02%
57,207
+5,845
+11% +$640K
EPAM icon
416
EPAM Systems
EPAM
$5.17B
$5.66M 0.02%
18,943
-2,277
-11% -$734K
WPC icon
417
W.P. Carey
WPC
$16.1B
$5.65M 0.02%
74,430
-270
-0.4% -$21.5K
MGK icon
418
Vanguard Morningstar Mega Cap Growth ETF
MGK
$33.7B
$5.63M 0.02%
137,595
-14,300
-9% -$542K
TD icon
419
Toronto Dominion Bank
TD
$204B
$5.59M 0.02%
93,262
-106,907
-53% -$6.91M
KAI icon
420
Kadant
KAI
$3.94B
$5.54M 0.02%
26,581
-222
-0.8% -$45.1K
FND icon
421
Floor & Decor
FND
$6.32B
$5.51M 0.02%
56,104
-4,618
-8% -$415K
XYL icon
422
Xylem
XYL
$28.5B
$5.49M 0.02%
52,462
-1,972
-4% -$206K
HUBB icon
423
Hubbell
HUBB
$27.1B
$5.49M 0.02%
22,564
– –
ITA icon
424
iShares US Aerospace & Defense ETF
ITA
$15B
$5.48M 0.02%
47,656
+209
+0.4% +$23.8K
XLI icon
425
State Street Industrial Select Sector SPDR ETF
XLI
$34.7B
$5.48M 0.02%
54,140
+9,472
+21% +$953K
15 16
17
18 19

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William Blair & Company's Q1 2023 Portfolio in Review

As of Q1 2023, William Blair & Company held 1,879 positions worth $25B, up 8.9% from $23B the previous quarter. Its ten largest holdings account for 24% of the portfolio.

William Blair & Company's Q1 2023 filing shows 69 new, 680 increased, 748 reduced and 78 closed positions. Its largest new stake was Neogen: 2,404,277 shares worth $44.5M. The largest sale was Alphabet (Google) Class C, an estimated $54.2M.

By sector, the portfolio is most concentrated in Technology at 25% of assets, up from 22% a quarter earlier, followed by Healthcare and Financials.

  • William Blair & Company's largest Q1 2023 buy was Neogen: 2,404,277 shares worth $44.5M.
  • William Blair & Company added most to Progressive in Q1 2023, an estimated $34.8M increase.
  • William Blair & Company's biggest Q1 2023 reduction was Alphabet (Google) Class C, cutting an estimated $54.2M.
  • William Blair & Company fully exited Coupa Software Incorporated in Q1 2023, selling an estimated $2.65M.
  • William Blair & Company's ten largest holdings make up 24% of its $25B portfolio in Q1 2023.
  • William Blair & Company opened 69 new positions and closed 78 in Q1 2023.
  • William Blair & Company's portfolio value rose 8.9% quarter-over-quarter to $25B.

Based on William Blair & Company's 13F filing for Q1 2023, filed 12 May 2023.