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William Blair & Company

William Blair & Company Portfolio holdings

AUM $34.9B
1-Year Est. Return 18.88%
This Fund
S&P 500
This Quarter Est. Return
+4.57%
1 Year Est. Return
+18.88%
3 Year Est. Return
+73.84%
5 Year Est. Return
+90.13%
10 Year Est. Return
+512.03%
AUM
$13.3B
AUM Growth
+$17.7M
Cap. Flow
-$449M
Cap. Flow %
-3.37%
Top 10 Hldgs %
18.64%
Holding
1,772
New
130
Increased
581
Reduced
525
Closed
417

Top Buys

Rank Stock Value
1
WSO icon
Watsco Inc
WSO
+$36.3M
2
BL icon
BlackLine
BL
+$21.8M
3
EVH icon
Evolent Health
EVH
+$19.6M
4
PGR icon
Progressive
PGR
+$17.2M
5
JPM icon
JPMorgan Chase
JPM
+$16.9M

Top Sells

Rank Stock Value
1
GOOG icon
Alphabet (Google) Class C
GOOG
+$115M
2
GOOGL icon
Alphabet (Google) Class A
GOOGL
+$66M
3
COST icon
Costco
COST
+$33M
4
XRAY icon
Dentsply Sirona
XRAY
+$30.5M
5
PRAA icon
PRA Group
PRAA
+$24.5M

Sector Composition

Rank Sector Weight
1 Healthcare 18.86%
2 Technology 17.6%
3 Financials 14.62%
4 Industrials 10.54%
5 Consumer Discretionary 8.84%
Name Market Value Portfolio Weight Shares or Principal Change
in Stake 		Capital Flow
MBB icon
551
iShares MBS ETF
MBB
$38.9B
$2.05M 0.02%
19,109
+3,862
+25% +$414K
SRPT icon
552
Sarepta Therapeutics
SRPT
$1.57B
$2.01M 0.02%
44,235
+27,210
+160% +$1.09M
MPC icon
553
Marathon Petroleum
MPC
$92.4B
$2M 0.02%
35,568
-1,971
-5% -$106K
PDP icon
554
Invesco Dorsey Wright Momentum ETF
PDP
$1.46B
$1.99M 0.01%
40,885
-845
-2% -$40.5K
HSIC icon
555
Henry Schein
HSIC
$9.77B
$1.99M 0.01%
30,878
-31
-0.1% -$2.12K
FLRN icon
556
State Street SPDR Bloomberg Investment Grade Floating Rate ETF
FLRN
$3.08B
$1.97M 0.01%
64,200
+10,300
+19% +$316K
AIG icon
557
American International
AIG
$41.7B
$1.97M 0.01%
32,146
-863
-3% -$53.8K
SCHP icon
558
Schwab US TIPS ETF
SCHP
$16.3B
$1.97M 0.01%
71,310
+41,700
+141% +$1.15M
CDXS icon
559
Codexis
CDXS
$151M
$1.97M 0.01%
295,877
+16,080
+6% +$89K
CGNX icon
560
Cognex
CGNX
$10.9B
$1.95M 0.01%
35,338
-4,352
-11% -$221K
MELI icon
561
Mercado Libre
MELI
$95.2B
$1.95M 0.01%
7,515
-830
-10% -$220K
IUSG icon
562
iShares Core S&P US Growth ETF
IUSG
$31.7B
$1.94M 0.01%
38,475
+105
+0.3% +$5.2K
RSG icon
563
Republic Services
RSG
$64.8B
$1.93M 0.01%
29,187
+1,484
+5% +$96.5K
SHPG
564
DELISTED
Shire pic
SHPG
$1.9M 0.01%
12,433
-2,976
-19% -$466K
SITE icon
565
SiteOne Landscape Supply
SITE
$4.12B
$1.89M 0.01%
32,589
-471
-1% -$24.7K
OXLC
566
Oxford Lane Capital
OXLC
$894M
$1.89M 0.01%
37,001
+660
+2% +$34.7K
ATR icon
567
AptarGroup
ATR
$8.55B
$1.88M 0.01%
21,808
-749
-3% -$63.7K
VBR icon
568
Vanguard Morningstar Small-Cap Value ETF
VBR
$37.1B
$1.88M 0.01%
14,704
-1,700
-10% -$210K
DOV icon
569
Dover
DOV
$27.6B
$1.88M 0.01%
25,445
-681
-3% -$47.3K
ICLR icon
570
Icon
ICLR
$12.6B
$1.86M 0.01%
16,350
+1,554
+11% +$165K
ED icon
571
Consolidated Edison
ED
$40.1B
$1.86M 0.01%
23,033
-116
-0.5% -$9.6K
FCFS icon
572
FirstCash
FCFS
$8.85B
$1.85M 0.01%
29,293
+13,877
+90% +$820K
MYGN icon
573
Myriad Genetics
MYGN
$270M
$1.84M 0.01%
50,748
+10,188
+25% +$291K
IEV icon
574
iShares Europe ETF
IEV
$1.67B
$1.83M 0.01%
39,122
+125
+0.3% +$5.69K
SFM icon
575
Sprouts Farmers Market
SFM
$8.13B
$1.83M 0.01%
97,547
-68,437
-41% -$1.51M
21 22
23
24 25

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William Blair & Company's Q3 2017 Portfolio in Review

As of Q3 2017, William Blair & Company held 1,772 positions worth $13.3B, up 0.13% from $13.3B the previous quarter. Its ten largest holdings account for 19% of the portfolio.

William Blair & Company withdrew a net $449M in Q3 2017, closing 417 positions and reducing 525 holdings. Its most notable exit was Dave & Buster's, an estimated $20.3M position sold in full.

By sector, the portfolio is most concentrated in Healthcare at 19% of assets, up from 19% a quarter earlier, followed by Technology and Financials.

Against the trend, William Blair & Company opened a new position in Quantenna Communications, Inc. Common Stock worth $9.07M.

  • William Blair & Company's largest Q3 2017 buy was Quantenna Communications, Inc. Common Stock: 539,590 shares worth $9.07M.
  • William Blair & Company added most to Watsco Inc in Q3 2017, an estimated $36.3M increase.
  • William Blair & Company's biggest Q3 2017 reduction was Alphabet (Google) Class C, cutting an estimated $115M.
  • William Blair & Company fully exited Dave & Buster's in Q3 2017, selling an estimated $20.3M.
  • William Blair & Company's ten largest holdings make up 19% of its $13.3B portfolio in Q3 2017.
  • William Blair & Company opened 130 new positions and closed 417 in Q3 2017.
  • William Blair & Company's portfolio value rose 0.13% quarter-over-quarter to $13.3B.

Based on William Blair & Company's 13F filing for Q3 2017, filed 13 Nov 2017.