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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
+10.92%
1 Year Est. Return
+18.88%
3 Year Est. Return
+73.84%
5 Year Est. Return
+90.13%
10 Year Est. Return
+563.35%
AUM
$16.3B
AUM Growth
+$1.62B
Cap. Flow
+$161M
Cap. Flow %
0.98%
Top 10 Hldgs %
21.12%
Holding
1,696
New
110
Increased
623
Reduced
570
Closed
77

Top Buys

Rank Stock Value
1
DLB icon
Dolby
DLB
+$37M
2
DSI icon
iShares MSCI KLD 400 Social ETF
DSI
+$20M
3
PGR icon
Progressive
PGR
+$19.6M
4
KMX icon
CarMax
KMX
+$19.2M
5
TYL icon
Tyler Technologies
TYL
+$18.5M

Top Sells

Rank Stock Value
1
SBUX icon
Starbucks
SBUX
+$35.1M
2
META icon
Meta Platforms (Facebook)
META
+$18.3M
3
INGN icon
Inogen
INGN
+$14.6M
4
MKTX icon
MarketAxess Holdings
MKTX
+$13M
5
PF
Pinnacle Foods, Inc.
PF
+$12.6M

Sector Composition

Rank Sector Weight
1 Technology 21.34%
2 Healthcare 18.9%
3 Financials 12.91%
4 Industrials 9.71%
5 Consumer Discretionary 9.37%
Name Market Value Portfolio Weight Shares or Principal Change
in Stake 		Capital Flow
IHI icon
1501
iShares US Medical Devices ETF
IHI
$3.34B
$29K ﹤0.01%
768
+138
+22% +$4.9K
TDTF icon
1502
FlexShares iBoxx 5-Year Target Duration TIPS Index Fund
TDTF
$1.04B
$29K ﹤0.01%
1,189
– –
SRRA
1503
DELISTED
Sierra Oncology, Inc. Common Stock
SRRA
$29K ﹤0.01%
423
-970
-70% -$88K
ARC
1504
DELISTED
ARC Document Solutions, Inc.
ARC
$28K ﹤0.01%
10,000
– –
AOM icon
1505
iShares Core Moderate Allocation ETF
AOM
$1.77B
$27K ﹤0.01%
700
– –
DOC icon
1506
CALL
Healthpeak Properties
DOC
$15B
$26K ﹤0.01%
1,000
– –
ICLN icon
1507
iShares Global Clean Energy ETF
ICLN
$2.37B
$26K ﹤0.01%
3,000
– –
XPH icon
1508
State Street SPDR S&P Pharmaceuticals ETF
XPH
$504M
$26K ﹤0.01%
532
– –
EWS icon
1509
iShares MSCI Singapore ETF
EWS
$1.05B
$25K ﹤0.01%
1,020
– –
ISCV icon
1510
iShares Morningstar Small-Cap Value ETF
ISCV
$706M
$25K ﹤0.01%
480
– –
RAD
1511
DELISTED
Rite Aid Corporation
RAD
$25K ﹤0.01%
957
-535
-36% -$16.5K
IBDQ
1512
DELISTED
iShares iBonds Dec 2025 Term Corporate ETF
IBDQ
$24K ﹤0.01%
1,000
– –
PBE icon
1513
Invesco Biotechnology & Genome ETF
PBE
$289M
$24K ﹤0.01%
400
– –
PFFD icon
1514
Global X US Preferred ETF
PFFD
$2.17B
$24K ﹤0.01%
+1,000
New +$24.4K
PZA icon
1515
Invesco National AMT-Free Municipal Bond ETF
PZA
$4.25B
$24K ﹤0.01%
966
– –
SCHH icon
1516
Schwab US REIT ETF
SCHH
$11.4B
$24K ﹤0.01%
1,136
+2
+0.2% +$42
SGDJ icon
1517
Sprott Junior Gold Miners ETF
SGDJ
$308M
$24K ﹤0.01%
1,000
– –
SLY
1518
DELISTED
SPDR S&P 600 Small Cap ETF (based on S&P SmallCap 600 Index--symbol SML)
SLY
$24K ﹤0.01%
320
– –
SLCA
1519
CALL
DELISTED
U.S. SILICA HOLDINGS, INC.
SLCA
$23K ﹤0.01%
+1,200
New +$27.8K
MOO icon
1520
VanEck Agribusiness ETF
MOO
$971M
$22K ﹤0.01%
330
– –
NTZ
1521
Natuzzi
NTZ
$14.8M
$22K ﹤0.01%
3,156
– –
SMLV icon
1522
State Street SPDR US Small Cap Low Volatility Index ETF
SMLV
$263M
$22K ﹤0.01%
224
– –
TURN
1523
DELISTED
180 Degree Capital
TURN
$22K ﹤0.01%
3,333
– –
ATMP icon
1524
iPath Select MLP ETN
ATMP
$623M
$21K ﹤0.01%
1,000
-4,435
-82% -$94.3K
BOND icon
1525
PIMCO Active Bond Exchange-Traded Fund
BOND
$8.48B
$21K ﹤0.01%
210
– –
59 60
61
62 63

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William Blair & Company's Q3 2018 Portfolio in Review

As of Q3 2018, William Blair & Company held 1,696 positions worth $16.3B, up 11% from $14.7B the previous quarter. Its ten largest holdings account for 21% of the portfolio.

William Blair & Company's Q3 2018 filing shows 110 new, 623 increased, 570 reduced and 77 closed positions. Its largest new stake was Marvell Technology: 234,218 shares worth $4.52M. The largest sale was Starbucks, an estimated $35.1M.

By sector, the portfolio is most concentrated in Technology at 21% of assets, up from 20% a quarter earlier, followed by Healthcare and Financials.

  • William Blair & Company's largest Q3 2018 buy was Marvell Technology: 234,218 shares worth $4.52M.
  • William Blair & Company added most to Dolby in Q3 2018, an estimated $37M increase.
  • William Blair & Company's biggest Q3 2018 reduction was Starbucks, cutting an estimated $35.1M.
  • William Blair & Company fully exited Williams Partners L.P. in Q3 2018, selling an estimated $7.8M.
  • William Blair & Company's ten largest holdings make up 21% of its $16.3B portfolio in Q3 2018.
  • William Blair & Company opened 110 new positions and closed 77 in Q3 2018.
  • William Blair & Company's portfolio value rose 11% quarter-over-quarter to $16.3B.

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