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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
+7.86%
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
$28.9B
AUM Growth
+$2.01B
Cap. Flow
+$420M
Cap. Flow %
1.46%
Top 10 Hldgs %
17.78%
Holding
509
New
33
Increased
212
Reduced
167
Closed
90

Top Buys

Rank Stock Value
1
RCI icon
Rogers Communications
RCI
+$228M
2
BN icon
Brookfield
BN
+$96.9M
3
EEFT icon
Euronet Worldwide
EEFT
+$92.3M
4
TFX icon
Teleflex
TFX
+$84.9M
5
P
Everpure Inc
P
+$79.7M

Top Sells

Rank Stock Value
1
YUMC icon
Yum China
YUMC
+$188M
2
CRL icon
Charles River Laboratories
CRL
+$188M
3
FND icon
Floor & Decor
FND
+$129M
4
TWOU
2U Inc
TWOU
+$87.5M
5
MTN icon
Vail Resorts
MTN
+$71.8M

Sector Composition

Rank Sector Weight
1 Technology 16.83%
2 Healthcare 15.47%
3 Industrials 13.49%
4 Consumer Discretionary 13%
5 Financials 12.64%
Name Market Value Portfolio Weight Shares or Principal Change
in Stake
Capital Flow
PEB icon
251
Pebblebrook Hotel Trust
PEB
$2.01B
$19.2M 0.07%
526,566
+10,830
+2% +$413K
RRC icon
252
Range Resources
RRC
$9.5B
$19.1M 0.07%
1,126,364
-76,025
-6% -$1.22M
RNST icon
253
Renasant Corp
RNST
$3.92B
$19M 0.07%
460,363
-34,879
-7% -$1.58M
AVNT icon
254
Avient
AVNT
$4.17B
$18.9M 0.07%
431,410
-29,665
-6% -$1.3M
HAL icon
255
Halliburton
HAL
$28.2B
$18.8M 0.07%
463,509
-2,969
-0.6% -$123K
AWI icon
256
Armstrong World Industries
AWI
$7.89B
$18.7M 0.06%
269,008
+30,516
+13% +$2.11M
NBHC icon
257
National Bank Holdings
NBHC
$1.92B
$18.6M 0.06%
494,212
+22,279
+5% +$878K
THRM icon
258
Gentherm
THRM
$1.27B
$18.6M 0.06%
408,932
+50,426
+14% +$2.29M
PLD icon
259
Prologis
PLD
$133B
$18.5M 0.06%
273,129
-2,155
-0.8% -$142K
GSKY
260
DELISTED
GreenSky, Inc. Class A Common Stock
GSKY
$18.4M 0.06%
1,020,678
+765,426
+300% +$14.6M
UNF icon
261
Unifirst Corp
UNF
$5.27B
$18.1M 0.06%
104,175
+12,837
+14% +$2.36M
ERF
262
DELISTED
Enerplus Corporation
ERF
$18M 0.06%
1,458,493
-148,340
-9% -$1.86M
SHO icon
263
Sunstone Hotel Investors
SHO
$1.98B
$17.9M 0.06%
1,093,757
+245,256
+29% +$4.05M
IPHI
264
DELISTED
INPHI CORPORATION
IPHI
$17.9M 0.06%
470,354
-35,462
-7% -$1.22M
LXFR icon
265
Luxfer Holdings
LXFR
$457M
$17.8M 0.06%
+767,461
New +$15.8M
SWX icon
266
Southwest Gas
SWX
$6.63B
$17.8M 0.06%
225,764
-58,478
-21% -$4.62M
SJI
267
DELISTED
South Jersey Industries, Inc.
SJI
$17.7M 0.06%
+502,292
New +$17.1M
MOG.A icon
268
Moog Inc Class A
MOG.A
$13.2B
$17.7M 0.06%
205,534
-13,462
-6% -$1.06M
AROC icon
269
Archrock
AROC
$5.78B
$17.5M 0.06%
1,433,088
-107,754
-7% -$1.36M
PDCE
270
DELISTED
PDC Energy, Inc.
PDCE
$17.4M 0.06%
356,126
-26,829
-7% -$1.49M
PLOW icon
271
Douglas Dynamics
PLOW
$979M
$17.4M 0.06%
395,664
+18,221
+5% +$848K
ILMN icon
272
Illumina
ILMN
$29.1B
$17M 0.06%
+47,733
New +$15.3M
SSD icon
273
Simpson Manufacturing
SSD
$8.19B
$16.9M 0.06%
233,123
-17,615
-7% -$1.25M
ALE
274
DELISTED
Allete
ALE
$16.9M 0.06%
224,969
+37,247
+20% +$2.86M
EE
275
DELISTED
El Paso Electric Company
EE
$16.9M 0.06%
294,868
-30,042
-9% -$1.84M

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William Blair Investment Management's Q3 2018 Portfolio in Review

As of Q3 2018, William Blair Investment Management held 509 positions worth $28.9B, up 7.5% from $26.9B the previous quarter. Its ten largest holdings account for 18% of the portfolio.

William Blair Investment Management's Q3 2018 filing shows 33 new, 212 increased, 167 reduced and 90 closed positions. Its largest new stake was Rogers Communications: 4,461,925 shares worth $229M. The largest sale was Yum China, an estimated $188M.

By sector, the portfolio is most concentrated in Technology at 17% of assets, up from 15% a quarter earlier, followed by Healthcare and Industrials.

  • William Blair Investment Management's largest Q3 2018 buy was Rogers Communications: 4,461,925 shares worth $229M.
  • William Blair Investment Management added most to Brookfield in Q3 2018, an estimated $96.9M increase.
  • William Blair Investment Management's biggest Q3 2018 reduction was Vail Resorts, cutting an estimated $71.8M.
  • William Blair Investment Management fully exited Yum China in Q3 2018, selling an estimated $188M.
  • William Blair Investment Management's ten largest holdings make up 18% of its $28.9B portfolio in Q3 2018.
  • William Blair Investment Management opened 33 new positions and closed 90 in Q3 2018.
  • William Blair Investment Management's portfolio value rose 7.5% quarter-over-quarter to $28.9B.

Based on William Blair Investment Management's 13F filing for Q3 2018, filed 13 Nov 2018.