We are live on ! Find out more
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
-14.81%
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
$20.1B
AUM Growth
-$8.75B
Cap. Flow
-$4.18B
Cap. Flow %
-20.77%
Top 10 Hldgs %
19.04%
Holding
450
New
31
Increased
192
Reduced
174
Closed
46

Top Buys

Rank Stock Value
1
CNI icon
Canadian National Railway
CNI
+$128M
2
WW
WW International
WW
+$107M
3
INGN icon
Inogen
INGN
+$106M
4
TREX icon
Trex
TREX
+$106M
5
SABR icon
Sabre
SABR
+$95.3M

Sector Composition

Rank Sector Weight
1 Technology 16.34%
2 Healthcare 14.5%
3 Financials 13.62%
4 Consumer Discretionary 13.1%
5 Industrials 12.65%
Name Market Value Portfolio Weight Shares or Principal Change
in Stake
Capital Flow
IEMG icon
76
iShares Core MSCI Emerging Markets ETF
IEMG
$156B
$82.5M 0.41%
1,748,900
+1,333,900
+321% +$64.5M
WP
77
DELISTED
Worldpay, Inc.
WP
$80.5M 0.4%
1,053,889
-681,611
-39% -$59.3M
INGN icon
78
Inogen
INGN
$158M
$80.2M 0.4%
+646,263
New +$106M
AXTA icon
79
Axalta
AXTA
$7.97B
$79.4M 0.39%
3,388,304
-598,179
-15% -$14.9M
TWOU
80
DELISTED
2U Inc
TWOU
$79.3M 0.39%
+53,172
New +$93.5M
NUS icon
81
Nu Skin
NUS
$234M
$79.2M 0.39%
1,291,466
+28,327
+2% +$1.91M
ECPG icon
82
Encore Capital Group
ECPG
$2B
$78.6M 0.39%
3,342,853
-33,284
-1% -$894K
LW icon
83
Lamb Weston
LW
$7.21B
$78M 0.39%
1,060,574
+1,044,629
+6,551% +$80M
SU icon
84
Suncor Energy
SU
$73.9B
$77.7M 0.39%
2,782,118
-5,881,582
-68% -$195M
ZTS icon
85
Zoetis
ZTS
$30.9B
$77.7M 0.39%
908,203
-695,057
-43% -$62.6M
CABO icon
86
Cable One
CABO
$197M
$76.7M 0.38%
93,577
-180
-0.2% -$156K
ADBE icon
87
Adobe
ADBE
$105B
$76.6M 0.38%
338,677
-147,618
-30% -$35.6M
EL icon
88
Estee Lauder
EL
$31.8B
$76.2M 0.38%
585,732
-178,773
-23% -$24.3M
ICLR icon
89
Icon
ICLR
$12.9B
$74.4M 0.37%
575,983
-15,034
-3% -$2.08M
SITE icon
90
SiteOne Landscape Supply
SITE
$4.33B
$73.9M 0.37%
1,337,523
-134,762
-9% -$8.45M
WST icon
91
West Pharmaceutical
WST
$24.9B
$73.5M 0.37%
749,634
-684,983
-48% -$74.3M
EWBC icon
92
East-West Bancorp
EWBC
$18.3B
$70.3M 0.35%
1,615,060
-411,846
-20% -$21.4M
LULU icon
93
lululemon athletica
LULU
$14.3B
$68.3M 0.34%
561,650
-168,463
-23% -$22.6M
ULTA icon
94
Ulta Beauty
ULTA
$23.3B
$65.7M 0.33%
268,175
-229,759
-46% -$63.5M
PE
95
DELISTED
PARSLEY ENERGY INC
PE
$64.5M 0.32%
4,037,727
-1,111,407
-22% -$25.3M
TTC icon
96
Toro Company
TTC
$9.48B
$60.3M 0.3%
1,078,306
-6,713
-0.6% -$390K
PTLA
97
DELISTED
Portola Pharmaceuticals, Inc.
PTLA
$57.2M 0.28%
2,932,813
+1,110,765
+61% +$22.8M
CIGI icon
98
Colliers International
CIGI
$5.3B
$57M 0.28%
1,035,861
-181,312
-15% -$11.5M
LQD icon
99
iShares iBoxx $ Investment Grade Corporate Bond ETF
LQD
$32.7B
$56.5M 0.28%
500,600
-5,700
-1% -$641K
NOVT icon
100
Novanta
NOVT
$6.27B
$56.5M 0.28%
896,421
-99,758
-10% -$6.43M

Similar funds

William Blair Investment Management's Q4 2018 Portfolio in Review

As of Q4 2018, William Blair Investment Management held 450 positions worth $20.1B, down 30% from $28.9B the previous quarter. Its ten largest holdings account for 19% of the portfolio.

William Blair Investment Management withdrew a net $4.18B in Q4 2018, closing 46 positions and reducing 174 holdings. Its most notable exit was Hexcel, an estimated $187M position sold in full.

By sector, the portfolio is most concentrated in Technology at 16% of assets, down from 17% a quarter earlier, followed by Healthcare and Financials.

Against the trend, William Blair Investment Management opened a new position in Inogen worth $80.2M.

  • William Blair Investment Management's largest Q4 2018 buy was Inogen: 646,263 shares worth $80.2M.
  • William Blair Investment Management added most to Canadian National Railway in Q4 2018, an estimated $128M increase.
  • William Blair Investment Management's biggest Q4 2018 reduction was Suncor Energy, cutting an estimated $195M.
  • William Blair Investment Management fully exited Hexcel in Q4 2018, selling an estimated $187M.
  • William Blair Investment Management's ten largest holdings make up 19% of its $20.1B portfolio in Q4 2018.
  • William Blair Investment Management opened 31 new positions and closed 46 in Q4 2018.
  • William Blair Investment Management's portfolio value fell 30% quarter-over-quarter to $20.1B.

Based on William Blair Investment Management's 13F filing for Q4 2018, filed 13 Feb 2019.