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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
+5.95%
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
$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

Top Buys

Rank Stock Value
1
HCSG icon
Healthcare Services Group
HCSG
+$169M
2
WP
Worldpay, Inc.
WP
+$159M
3
CTLT
CATALENT, INC.
CTLT
+$146M
4
PE
PARSLEY ENERGY INC
PE
+$136M
5
P
Everpure Inc
P
+$129M

Top Sells

Rank Stock Value
1
MMS icon
Maximus
MMS
+$224M
2
CNI icon
Canadian National Railway
CNI
+$212M
3
AMG icon
Affiliated Managers Group
AMG
+$199M
4
CSRA
CSRA Inc.
CSRA
+$167M
5
TTWO icon
Take-Two Interactive
TTWO
+$162M

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
PGR icon
26
Progressive
PGR
$124B
$217M 0.83%
3,562,550
-304,459
-8% -$17.4M
MTN icon
27
Vail Resorts
MTN
$5.21B
$216M 0.82%
974,112
-32,679
-3% -$7.15M
VEEV icon
28
Veeva Systems
VEEV
$38.1B
$216M 0.82%
2,957,442
+91,114
+3% +$5.89M
GOOGL icon
29
Alphabet (Google) Class A
GOOGL
$4.37T
$214M 0.82%
4,120,940
-400,260
-9% -$22.2M
LOPE icon
30
Grand Canyon Education
LOPE
$3.82B
$212M 0.81%
2,022,917
+25,701
+1% +$2.48M
ABMD
31
DELISTED
Abiomed Inc
ABMD
$206M 0.79%
709,331
-253,536
-26% -$64.3M
FCFS icon
32
FirstCash
FCFS
$9.05B
$192M 0.73%
2,366,976
+438,832
+23% +$32.7M
ZD icon
33
Ziff Davis
ZD
$2B
$192M 0.73%
2,800,452
+587,377
+27% +$39.7M
UNH icon
34
UnitedHealth
UNH
$371B
$189M 0.72%
883,120
-56,620
-6% -$12.9M
VRSK icon
35
Verisk Analytics
VRSK
$23.6B
$187M 0.72%
1,802,471
-184,091
-9% -$18.4M
MA icon
36
Mastercard
MA
$493B
$185M 0.71%
1,056,468
-174,700
-14% -$29.9M
CBOE icon
37
Cboe Global Markets
CBOE
$29.8B
$183M 0.7%
1,608,022
+662,705
+70% +$80.6M
CRL icon
38
Charles River Laboratories
CRL
$13.2B
$182M 0.7%
1,708,523
+301,779
+21% +$32.5M
TRU icon
39
TransUnion
TRU
$15.2B
$181M 0.69%
3,184,965
+740,307
+30% +$42.7M
HXL icon
40
Hexcel
HXL
$7.63B
$173M 0.66%
2,674,316
+772,713
+41% +$50.9M
LGND icon
41
Ligand Pharmaceuticals
LGND
$5.89B
$170M 0.65%
1,649,665
-338,169
-17% -$33.4M
RHT
42
DELISTED
Red Hat Inc
RHT
$169M 0.64%
1,128,713
-483,166
-30% -$67M
TWOU
43
DELISTED
2U Inc
TWOU
$166M 0.63%
65,931
+1,955
+3% +$4.52M
HDB icon
44
HDFC Bank
HDB
$120B
$166M 0.63%
6,729,464
-1,303,492
-16% -$32.8M
MLM icon
45
Martin Marietta Materials
MLM
$33B
$165M 0.63%
798,129
+44,985
+6% +$9.75M
WP
46
DELISTED
Worldpay, Inc.
WP
$165M 0.63%
+2,001,531
New +$159M
ROG icon
47
Rogers Corp
ROG
$2.29B
$162M 0.62%
1,355,220
+347,224
+34% +$52.8M
OZK icon
48
Bank OZK
OZK
$5.63B
$158M 0.6%
3,281,462
+184,123
+6% +$9.32M
HEI.A icon
49
HEICO Corp Class A
HEI.A
$37B
$155M 0.59%
2,726,190
-443,894
-14% -$24M
HCSG icon
50
Healthcare Services Group
HCSG
$1.5B
$150M 0.57%
+3,458,904
New +$169M
1
2
3 4 5

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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.