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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
+1.57%
1 Year Est. Return
+33.75%
3 Year Est. Return
+108.55%
5 Year Est. Return
+126.9%
10 Year Est. Return
+771.69%
AUM
$23.4B
AUM Growth
-$452M
Cap. Flow
-$478M
Cap. Flow %
-2.05%
Top 10 Hldgs %
20.73%
Holding
398
New
26
Increased
153
Reduced
172
Closed
41

Sector Composition

Rank Sector Weight
1 Technology 20.24%
2 Healthcare 13.8%
3 Consumer Discretionary 13.77%
4 Industrials 13.46%
5 Financials 13.14%
Name Market Value Portfolio Weight Shares or Principal Change
in Stake
Capital Flow
BABA icon
1
Alibaba
BABA
$305B
$1B 4.29%
5,991,331
+124,935
+2% +$21.5M
TSM icon
2
TSMC
TSM
$2.11T
$805M 3.44%
17,322,305
+1,128,216
+7% +$48.1M
SPY icon
3
State Street SPDR S&P 500 ETF Trust
SPY
$806B
$729M 3.12%
2,457,300
+433,600
+21% +$128M
BWXT icon
4
BWX Technologies
BWXT
$15.9B
$409M 1.75%
7,147,348
+135,082
+2% +$7.54M
BN icon
5
Brookfield
BN
$107B
$382M 1.63%
20,157,047
-460,640
-2% -$8.34M
TREX icon
6
Trex
TREX
$4.66B
$333M 1.42%
7,328,046
-38,336
-0.5% -$1.55M
BURL icon
7
Burlington
BURL
$23.2B
$302M 1.29%
1,509,859
-252,224
-14% -$46.4M
CNI icon
8
Canadian National Railway
CNI
$76.1B
$301M 1.29%
3,353,431
-169,833
-5% -$15.7M
EHC icon
9
Encompass Health
EHC
$11.2B
$294M 1.26%
5,845,871
+937,705
+19% +$47.1M
EEFT icon
10
Euronet Worldwide
EEFT
$2.8B
$290M 1.24%
1,981,475
-181,718
-8% -$28.1M
NTES icon
11
NetEase
NTES
$84.2B
$279M 1.19%
5,243,840
+762,095
+17% +$38.8M
MLM icon
12
Martin Marietta Materials
MLM
$32.6B
$278M 1.19%
1,015,610
+20,555
+2% +$5.08M
PODD icon
13
Insulet
PODD
$11.8B
$271M 1.16%
1,640,410
-693,725
-30% -$97.5M
LOPE icon
14
Grand Canyon Education
LOPE
$3.93B
$270M 1.16%
2,752,916
+414,692
+18% +$49.4M
LYV icon
15
Live Nation Entertainment
LYV
$42.3B
$261M 1.12%
3,934,316
-19,890
-0.5% -$1.39M
CPRT icon
16
Copart
CPRT
$27.2B
$261M 1.12%
12,994,268
-8,039,800
-38% -$156M
TRU icon
17
TransUnion
TRU
$15.3B
$251M 1.07%
3,088,878
-51,592
-2% -$4.15M
TD icon
18
Toronto Dominion Bank
TD
$200B
$248M 1.06%
4,258,778
-202,851
-5% -$11.5M
TDY icon
19
Teledyne Technologies
TDY
$31.1B
$247M 1.06%
767,731
-3,669
-0.5% -$1.1M
LW icon
20
Lamb Weston
LW
$7.29B
$247M 1.06%
3,393,998
+59,442
+2% +$4.08M
TFX icon
21
Teleflex
TFX
$6.18B
$231M 0.99%
680,331
+18,738
+3% +$6.53M
HZNP
22
DELISTED
Horizon Therapeutics Public Limited Company Ordinary Shares
HZNP
$227M 0.97%
8,340,441
+1,382,138
+20% +$35.7M
CBOE icon
23
Cboe Global Markets
CBOE
$31.2B
$226M 0.97%
1,970,679
-426,547
-18% -$49.4M
BJ icon
24
BJs Wholesale Club
BJ
$12.4B
$226M 0.97%
8,735,064
+3,269,503
+60% +$81.4M
MTN icon
25
Vail Resorts
MTN
$5.32B
$225M 0.96%
990,523
+6,715
+0.7% +$1.59M

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William Blair Investment Management's Q3 2019 Portfolio in Review

As of Q3 2019, William Blair Investment Management held 398 positions worth $23.4B, down 1.9% from $23.8B the previous quarter. Its ten largest holdings account for 21% of the portfolio.

William Blair Investment Management's Q3 2019 filing shows 26 new, 153 increased, 172 reduced and 41 closed positions. Its largest new stake was IAA, Inc. Common Stock: 2,969,390 shares worth $124M. The largest sale was Rogers Communications, an estimated $201M.

By sector, the portfolio is most concentrated in Technology at 20% of assets, up from 18% a quarter earlier, followed by Healthcare and Consumer Discretionary.

  • William Blair Investment Management's largest Q3 2019 buy was IAA, Inc. Common Stock: 2,969,390 shares worth $124M.
  • William Blair Investment Management added most to State Street SPDR S&P 500 ETF Trust in Q3 2019, an estimated $128M increase.
  • William Blair Investment Management's biggest Q3 2019 reduction was CoStar Group, cutting an estimated $173M.
  • William Blair Investment Management fully exited Rogers Communications in Q3 2019, selling an estimated $201M.
  • William Blair Investment Management's ten largest holdings make up 21% of its $23.4B portfolio in Q3 2019.
  • William Blair Investment Management opened 26 new positions and closed 41 in Q3 2019.
  • William Blair Investment Management's portfolio value fell 1.9% quarter-over-quarter to $23.4B.

Based on William Blair Investment Management's 13F filing for Q3 2019, filed 12 Nov 2019.