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William Blair Investment Management

William Blair Investment Management Portfolio holdings

AUM $30.3B
1-Year Est. Return 33.75%
This Fund
S&P 500
This Quarter Est. Return
+5.57%
1 Year Est. Return
+33.75%
3 Year Est. Return
+108.55%
5 Year Est. Return
+126.9%
10 Year Est. Return
+788.31%
AUM
$23.8B
AUM Growth
+$71.3M
Cap. Flow
-$999M
Cap. Flow %
-4.19%
Top 10 Hldgs %
19.3%
Holding
434
New
28
Increased
138
Reduced
201
Closed
62

Top Buys

Rank Stock Value
1
ABMD
Abiomed Inc
ABMD
+$167M
2
BJ icon
BJs Wholesale Club
BJ
+$145M
3
AVLR
Avalara, Inc.
AVLR
+$122M
4
AMED
Amedisys
AMED
+$106M
5
SBNY
Signature Bank
SBNY
+$105M

Top Sells

Rank Stock Value
1
BALL icon
Ball Corp
BALL
+$267M
2
VEEV icon
Veeva Systems
VEEV
+$257M
3
CSGP icon
CoStar Group
CSGP
+$209M
4
BAH icon
Booz Allen Hamilton
BAH
+$146M
5
CE icon
Celanese
CE
+$141M

Sector Composition

Rank Sector Weight
1 Technology 18.31%
2 Healthcare 14.87%
3 Industrials 14.19%
4 Financials 13.92%
5 Consumer Discretionary 13.16%
Name Market Value Portfolio Weight Shares or Principal Change
in Stake 		Capital Flow
CABO icon
51
Cable One
CABO
$203M
$155M 0.65%
132,761
+37,728
+40% +$41.2M
MA icon
52
Mastercard
MA
$493B
$155M 0.65%
587,327
+10,891
+2% +$2.73M
PEN icon
53
Penumbra
PEN
$12.8B
$153M 0.64%
958,597
+271,784
+40% +$39.3M
STE icon
54
Steris
STE
$23.3B
$153M 0.64%
1,028,709
+225,309
+28% +$30.1M
NBIS
55
Nebius Group N.V.
NBIS
$46.7B
$148M 0.62%
3,905,329
+692,919
+22% +$25.7M
GWR
56
DELISTED
Genesee & Wyoming Inc.
GWR
$147M 0.62%
1,469,833
-10,952
-0.7% -$999K
MSFT icon
57
Microsoft
MSFT
$3.76T
$147M 0.62%
1,096,082
-21,024
-2% -$2.67M
BJ icon
58
BJs Wholesale Club
BJ
$12.3B
$144M 0.61%
+5,465,561
New +$145M
UNH icon
59
UnitedHealth
UNH
$371B
$142M 0.6%
582,697
+9,662
+2% +$2.32M
FSV icon
60
FirstService
FSV
$6.27B
$137M 0.57%
1,426,227
-14,833
-1% -$1.34M
AVLR
61
DELISTED
Avalara, Inc.
AVLR
$136M 0.57%
+1,885,194
New +$122M
PTLA
62
DELISTED
Portola Pharmaceuticals, Inc.
PTLA
$136M 0.57%
4,997,224
+842,354
+20% +$26.4M
BCO icon
63
Brink's
BCO
$4.55B
$135M 0.57%
1,668,921
+1,259,015
+307% +$100M
GLOB icon
64
Globant
GLOB
$1.66B
$135M 0.56%
1,331,175
+326,331
+32% +$28.4M
CTLT
65
DELISTED
CATALENT, INC.
CTLT
$128M 0.54%
2,355,590
-1,731,332
-42% -$79.3M
HCSG icon
66
Healthcare Services Group
HCSG
$1.5B
$126M 0.53%
4,163,945
-39,134
-0.9% -$1.29M
VIRT icon
67
Virtu Financial
VIRT
$4.92B
$126M 0.53%
5,767,837
+1,674,638
+41% +$39.4M
CBM
68
DELISTED
Cambrex Corporation
CBM
$124M 0.52%
2,639,861
-19,620
-0.7% -$823K
AMED
69
DELISTED
Amedisys
AMED
$120M 0.5%
988,533
+893,253
+938% +$106M
EXAS
70
DELISTED
Exact Sciences
EXAS
$116M 0.49%
984,426
-433,441
-31% -$43.7M
CP icon
71
Canadian Pacific Kansas City
CP
$79.6B
$115M 0.48%
2,444,970
+299,325
+14% +$13.4M
RBA icon
72
RB Global
RBA
$17.4B
$114M 0.48%
3,440,575
-118,048
-3% -$4.04M
ECPG icon
73
Encore Capital Group
ECPG
$2.01B
$113M 0.47%
3,322,895
-19,367
-0.6% -$629K
QLYS icon
74
Qualys
QLYS
$6.43B
$110M 0.46%
1,265,817
+545,806
+76% +$47.1M
ADBE icon
75
Adobe
ADBE
$109B
$107M 0.45%
363,030
+8,526
+2% +$2.37M
1 2
3
4 5

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William Blair Investment Management's Q2 2019 Portfolio in Review

As of Q2 2019, William Blair Investment Management held 434 positions worth $23.8B, up 0.3% from $23.8B the previous quarter. Its ten largest holdings account for 19% of the portfolio.

William Blair Investment Management withdrew a net $999M in Q2 2019, closing 62 positions and reducing 201 holdings. Its most notable exit was Inogen, an estimated $100M position sold in full.

By sector, the portfolio is most concentrated in Technology at 18% of assets, up from 17% a quarter earlier, followed by Healthcare and Industrials.

Against the trend, William Blair Investment Management opened a new position in BJs Wholesale Club worth $144M.

  • William Blair Investment Management's largest Q2 2019 buy was BJs Wholesale Club: 5,465,561 shares worth $144M.
  • William Blair Investment Management added most to Abiomed Inc in Q2 2019, an estimated $167M increase.
  • William Blair Investment Management's biggest Q2 2019 reduction was Ball Corp, cutting an estimated $267M.
  • William Blair Investment Management fully exited Inogen in Q2 2019, selling an estimated $100M.
  • William Blair Investment Management's ten largest holdings make up 19% of its $23.8B portfolio in Q2 2019.
  • William Blair Investment Management opened 28 new positions and closed 62 in Q2 2019.
  • William Blair Investment Management's portfolio value rose 0.3% quarter-over-quarter to $23.8B.

Based on William Blair Investment Management's 13F filing for Q2 2019, filed 9 Aug 2019.