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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
+6.55%
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
$25.7B
AUM Growth
-$2.19B
Cap. Flow
-$3.7B
Cap. Flow %
-14.37%
Top 10 Hldgs %
17.87%
Holding
463
New
30
Increased
148
Reduced
245
Closed
36

Top Buys

Rank Stock Value
1
SPY icon
State Street SPDR S&P 500 ETF Trust
SPY
+$206M
2
TD icon
Toronto Dominion Bank
TD
+$161M
3
ROG icon
Rogers Corp
ROG
+$150M
4
CRL icon
Charles River Laboratories
CRL
+$148M
5
DPZ icon
Domino's
DPZ
+$132M

Top Sells

Rank Stock Value
1
WP
Worldpay, Inc.
WP
+$346M
2
SBAC icon
SBA Communications
SBAC
+$258M
3
CNC icon
Centene
CNC
+$212M
4
ALGN icon
Align Technology
ALGN
+$207M
5
BABA icon
Alibaba
BABA
+$194M

Sector Composition

Rank Sector Weight
1 Financials 14.64%
2 Consumer Discretionary 14.51%
3 Technology 13.93%
4 Industrials 13.62%
5 Healthcare 11.44%
Name Market Value Portfolio Weight Shares or Principal Change
in Stake 		Capital Flow
CSRA
51
DELISTED
CSRA Inc.
CSRA
$147M 0.57%
4,919,028
-1,128,975
-19% -$34.1M
ZD icon
52
Ziff Davis
ZD
$2B
$144M 0.56%
2,213,075
-1,441,972
-39% -$94M
BN icon
53
Brookfield
BN
$108B
$141M 0.55%
9,095,798
-334,753
-4% -$5.06M
MIK
54
DELISTED
Michaels Stores, Inc
MIK
$138M 0.54%
5,705,741
+520,881
+10% +$10.8M
SBAC icon
55
SBA Communications
SBAC
$19.2B
$138M 0.54%
843,696
-1,623,736
-66% -$258M
ANET icon
56
Arista Networks
ANET
$241B
$137M 0.53%
9,323,312
-8,044,848
-46% -$108M
CE icon
57
Celanese
CE
$4.81B
$134M 0.52%
1,255,537
+49,552
+4% +$5.27M
TRU icon
58
TransUnion
TRU
$15.2B
$134M 0.52%
2,444,658
+107,067
+5% +$5.7M
YELP icon
59
Yelp
YELP
$1.34B
$133M 0.52%
3,167,281
+546,282
+21% +$24.3M
EWBC icon
60
East-West Bancorp
EWBC
$18B
$131M 0.51%
2,147,045
-402,444
-16% -$24M
HGV icon
61
Hilton Grand Vacations
HGV
$3.33B
$130M 0.51%
3,105,485
+1,521,130
+96% +$61.9M
FCFS icon
62
FirstCash
FCFS
$9.07B
$130M 0.51%
1,928,144
+26,240
+1% +$1.69M
NBIS
63
Nebius Group N.V.
NBIS
$47.6B
$129M 0.5%
3,946,999
-682,741
-15% -$22.3M
ADBE icon
64
Adobe
ADBE
$108B
$129M 0.5%
737,577
-228,364
-24% -$39.3M
HZNP
65
DELISTED
Horizon Therapeutics Public Limited Company Ordinary Shares
HZNP
$129M 0.5%
8,826,079
+958,414
+12% +$13.5M
HEI.A icon
66
HEICO Corp Class A
HEI.A
$37B
$128M 0.5%
3,170,084
-62,014
-2% -$2.43M
MXL icon
67
MaxLinear
MXL
$6.35B
$127M 0.49%
4,802,122
+175,864
+4% +$4.39M
WST icon
68
West Pharmaceutical
WST
$25.1B
$126M 0.49%
1,272,407
+383,646
+43% +$37.6M
TWOU
69
DELISTED
2U Inc
TWOU
$124M 0.48%
63,976
-17,329
-21% -$32.5M
AXTA icon
70
Axalta
AXTA
$8.06B
$123M 0.48%
3,805,192
-512,898
-12% -$16.2M
ICE icon
71
Intercontinental Exchange
ICE
$85.2B
$123M 0.48%
1,744,895
-582,450
-25% -$40M
TDY icon
72
Teledyne Technologies
TDY
$32.2B
$121M 0.47%
+669,495
New +$118M
RCI icon
73
Rogers Communications
RCI
$18.6B
$120M 0.47%
2,358,000
-71,600
-3% -$3.73M
COHR
74
DELISTED
Coherent Inc
COHR
$119M 0.46%
423,300
+72,959
+21% +$20.3M
EL icon
75
Estee Lauder
EL
$31.5B
$118M 0.46%
928,375
+89,417
+11% +$10.7M
1 2
3
4 5

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William Blair Investment Management's Q4 2017 Portfolio in Review

As of Q4 2017, William Blair Investment Management held 463 positions worth $25.7B, down 7.9% from $27.9B the previous quarter. Its ten largest holdings account for 18% of the portfolio.

William Blair Investment Management withdrew a net $3.7B in Q4 2017, closing 36 positions and reducing 245 holdings. Its most notable exit was Worldpay, Inc., an estimated $346M position sold in full.

By sector, the portfolio is most concentrated in Financials at 15% of assets, up from 13% a quarter earlier, followed by Consumer Discretionary and Technology.

Against the trend, William Blair Investment Management opened a new position in Teledyne Technologies worth $121M.

  • William Blair Investment Management's largest Q4 2017 buy was Teledyne Technologies: 669,495 shares worth $121M.
  • William Blair Investment Management added most to State Street SPDR S&P 500 ETF Trust in Q4 2017, an estimated $206M increase.
  • William Blair Investment Management's biggest Q4 2017 reduction was SBA Communications, cutting an estimated $258M.
  • William Blair Investment Management fully exited Worldpay, Inc. in Q4 2017, selling an estimated $346M.
  • William Blair Investment Management's ten largest holdings make up 18% of its $25.7B portfolio in Q4 2017.
  • William Blair Investment Management opened 30 new positions and closed 36 in Q4 2017.
  • William Blair Investment Management's portfolio value fell 7.9% quarter-over-quarter to $25.7B.

Based on William Blair Investment Management's 13F filing for Q4 2017, filed 14 Feb 2018.