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William Blair Investment Management

William Blair Investment Management Portfolio holdings

AUM $33.3B
1-Year Est. Return 44.76%
This Fund
S&P 500
This Quarter Est. Return
+5.95%
1 Year Est. Return
+44.76%
3 Year Est. Return
+140.8%
5 Year Est. Return
+166.51%
10 Year Est. Return
+978.6%
AUM
$26.2B
AUM Growth
+$458M
Cap. Flow
-$585M
Cap. Flow %
-2.23%
Top 10 Hldgs %
18.81%
Holding
469
New
42
Increased
160
Reduced
224
Closed
36

Sector Composition

Rank Sector Weight
1 Technology 14.91%
2 Financials 14.73%
3 Consumer Discretionary 14.13%
4 Industrials 13.07%
5 Healthcare 12.8%
Name Market Value Portfolio Weight Shares or Principal Change
in Stake
Capital Flow
MRCY icon
326
Mercury Systems
MRCY
$6.65B
$7.99M 0.03%
165,443
-2,999
-2% -$143K
NVR icon
327
NVR
NVR
$16.8B
$7.98M 0.03%
2,850
-420
-13% -$1.34M
DEO icon
328
Diageo
DEO
$52.1B
$7.95M 0.03%
58,680
+9,318
+19% +$1.3M
GDEN
329
DELISTED
Golden Entertainment
GDEN
$7.88M 0.03%
339,028
-5,461
-2% -$158K
IBN icon
330
ICICI Bank
IBN
$107B
$7.85M 0.03%
887,498
+24,395
+3% +$241K
EPAM icon
331
EPAM Systems
EPAM
$5.03B
$7.71M 0.03%
67,288
+6,774
+11% +$775K
ITUB icon
332
Itaú Unibanco
ITUB
$81.8B
$7.68M 0.03%
1,015,395
+189,439
+23% +$1.42M
NVO
333
Novo Nordisk
NVO
$202B
$7.63M 0.03%
309,814
+68,482
+28% +$1.8M
AORT icon
334
Artivion
AORT
$1.37B
$7.19M 0.03%
358,827
-6,519
-2% -$125K
ABB
335
DELISTED
ABB Ltd
ABB
$7.12M 0.03%
300,072
+47,921
+19% +$1.23M
WLDN icon
336
Willdan Group
WLDN
$1.27B
$7.06M 0.03%
249,017
+82,081
+49% +$1.92M
LAD icon
337
Lithia Motors
LAD
$8.26B
$6.96M 0.03%
69,197
-21,936
-24% -$2.48M
CTLP
338
DELISTED
Cantaloupe
CTLP
$6.93M 0.03%
770,356
-10,105
-1% -$90.3K
IMAX icon
339
IMAX
IMAX
$2.79B
$6.92M 0.03%
360,584
+769
+0.2% +$16K
ORBC
340
DELISTED
ORBCOMM, Inc.
ORBC
$6.91M 0.03%
737,615
-13,501
-2% -$143K
RDS.A
341
DELISTED
Royal Dutch Shell PLC ADS Class A
RDS.A
$6.89M 0.03%
108,030
+26,461
+32% +$1.74M
RELX icon
342
RELX
RELX
$59.9B
$6.89M 0.03%
329,777
+43,132
+15% +$932K
ICFI icon
343
ICF International
ICFI
$1.58B
$6.8M 0.03%
116,328
-2,132
-2% -$120K
JBTM
344
JBT Marel
JBTM
$6.23B
$6.74M 0.03%
59,411
-1,095
-2% -$125K
AGN
345
DELISTED
Allergan plc
AGN
$6.65M 0.03%
39,541
-13,800
-26% -$2.31M
AIN icon
346
Albany International
AIN
$1.79B
$6.57M 0.03%
104,837
-1,920
-2% -$123K
QLYS icon
347
Qualys
QLYS
$6.47B
$6.51M 0.02%
+89,501
New +$6.18M
FMS icon
348
Fresenius Medical Care
FMS
$12.6B
$6.41M 0.02%
125,514
+20,118
+19% +$1.07M
HBM icon
349
Hudbay
HBM
$12.5B
$6.21M 0.02%
877,678
-1,462,434
-62% -$12.2M
AZN icon
350
AstraZeneca
AZN
$246B
$6.11M 0.02%
87,375
+14,008
+19% +$970K

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William Blair Investment Management's Q1 2018 Portfolio in Review

As of Q1 2018, William Blair Investment Management held 469 positions worth $26.2B, up 1.8% from $25.7B the previous quarter. Its ten largest holdings account for 19% of the portfolio.

William Blair Investment Management's Q1 2018 filing shows 42 new, 160 increased, 224 reduced and 36 closed positions. Its largest new stake was Healthcare Services Group: 3,458,904 shares worth $150M. The largest sale was Maximus, an estimated $224M.

By sector, the portfolio is most concentrated in Technology at 15% of assets, up from 14% a quarter earlier, followed by Financials and Consumer Discretionary.

  • William Blair Investment Management's largest Q1 2018 buy was Healthcare Services Group: 3,458,904 shares worth $150M.
  • William Blair Investment Management added most to PARSLEY ENERGY INC in Q1 2018, an estimated $136M increase.
  • William Blair Investment Management's biggest Q1 2018 reduction was Canadian National Railway, cutting an estimated $212M.
  • William Blair Investment Management fully exited Maximus in Q1 2018, selling an estimated $224M.
  • William Blair Investment Management's ten largest holdings make up 19% of its $26.2B portfolio in Q1 2018.
  • William Blair Investment Management opened 42 new positions and closed 36 in Q1 2018.
  • William Blair Investment Management's portfolio value rose 1.8% quarter-over-quarter to $26.2B.

Based on William Blair Investment Management's 13F filing for Q1 2018, filed 14 May 2018.