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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
SEI
301
Solaris Energy Infrastructure
SEI
$4.11B
$11.5M 0.04%
+692,959
New +$13M
ESE icon
302
ESCO Technologies
ESE
$7.8B
$10.9M 0.04%
186,368
+133
+0.1% +$8.17K
SUPN icon
303
Supernus Pharmaceuticals
SUPN
$2.69B
$10.7M 0.04%
234,424
-20,273
-8% -$846K
PRMW
304
DELISTED
Primo Water Corporation
PRMW
$10.7M 0.04%
915,921
-1,806
-0.2% -$22.4K
BHP icon
305
BHP
BHP
$230B
$10.6M 0.04%
268,342
-7,671
-3% -$323K
LPSN icon
306
LivePerson
LPSN
$34.9M
$10.5M 0.04%
42,782
+36,721
+606% +$7.35M
RP
307
DELISTED
RealPage, Inc.
RP
$10.4M 0.04%
201,487
-78,063
-28% -$3.9M
MGPI icon
308
MGP Ingredients
MGPI
$386M
$10.3M 0.04%
114,662
-22,710
-17% -$1.85M
OEC icon
309
Orion
OEC
$370M
$10.2M 0.04%
376,072
+330,974
+734% +$9.24M
SPTN
310
DELISTED
SpartanNash
SPTN
$9.86M 0.04%
572,728
-19,477
-3% -$418K
BOOT icon
311
Boot Barn
BOOT
$4.94B
$9.74M 0.04%
549,306
-53,949
-9% -$972K
AXGN icon
312
Axogen
AXGN
$2.62B
$9.68M 0.04%
265,159
+85,609
+48% +$2.63M
CASH icon
313
Pathward Financial
CASH
$1.79B
$9.66M 0.04%
265,449
-210,846
-44% -$7.54M
THRM icon
314
Gentherm
THRM
$1.25B
$9.29M 0.04%
273,621
+1,620
+0.6% +$52.5K
CARS icon
315
Cars.com
CARS
$623M
$9.23M 0.04%
325,910
-5,242
-2% -$153K
PUK icon
316
Prudential
PUK
$34.3B
$8.96M 0.03%
180,638
+43,110
+31% +$2.18M
IX icon
317
ORIX
IX
$43.8B
$8.84M 0.03%
491,635
+89,935
+22% +$1.63M
ARGT icon
318
Global X MSCI Argentina ETF
ARGT
$818M
$8.66M 0.03%
242,600
-11,600
-5% -$425K
ETSY icon
319
Etsy
ETSY
$7.29B
$8.64M 0.03%
307,824
-5,594
-2% -$126K
CVGW
320
DELISTED
Calavo Growers
CVGW
$8.47M 0.03%
91,873
-1,648
-2% -$144K
HOME
321
DELISTED
At Home Group Inc.
HOME
$8.4M 0.03%
262,123
-4,073
-2% -$125K
WNS
322
DELISTED
WNS Holdings
WNS
$8.39M 0.03%
185,062
-3,355
-2% -$147K
LFUS icon
323
Littelfuse
LFUS
$11.7B
$8.35M 0.03%
40,122
-718
-2% -$151K
VEDL
324
DELISTED
Vedanta Limited American Depostary Shares (Each representing four equity shares)
VEDL
$8.3M 0.03%
472,497
+82,079
+21% +$1.65M
AX icon
325
Axos Financial
AX
$5.66B
$8.22M 0.03%
202,893
-161,908
-44% -$5.9M

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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.