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William Blair & Company Portfolio holdings
AUM
$38.4B
1-Year Est. Return
25.71%
This Fund
S&P 500
This Quarter
Est. Return
+13.98%
1 Year Est. Return
+25.71%
3 Year Est. Return
+88.7%
5 Year Est. Return
+104.53%
10 Year Est. Return
+665.86%
AUM
$27.3B
AUM Growth
+$3.7B
(+16%)
Cap. Flow
+$865M
Cap. Flow
% of AUM
3.17%
Top 10 Holdings %
Top 10 Hldgs %
25.38%
Holding
1,900
New
178
Increased
749
Reduced
623
Closed
72
Top Buys
| Rank | Stock | Value |
|---|---|---|
| 1 |
SPLK
Splunk Inc
SPLK
|
+$77.8M |
| 2 |
General Dynamics
GD
|
+$49.6M |
| 3 |
Rockwell Automation
ROK
|
+$43.3M |
| 4 |
First Trust Exchange-Traded Fund IV First Trust Low Duration Opportunities ETF
LMBS
|
+$32.3M |
| 5 |
JPMorgan Chase
JPM
|
+$30.6M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
WORK
Slack Technologies, Inc.
WORK
|
+$24.2M |
| 2 |
Northern Trust
NTRS
|
+$24.1M |
| 3 |
Booking.com
BKNG
|
+$22.5M |
| 4 |
Exelixis
EXEL
|
+$17.5M |
| 5 |
DOCU
DocuSign
DOCU
|
+$15M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Technology | 27.82% |
| 2 | Healthcare | 18.6% |
| 3 | Financials | 11.15% |
| 4 | Consumer Discretionary | 10.38% |
| 5 | Industrials | 8.96% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
301
Vulcan Materials
VMC
$36.3B
| $10.1M | 0.04% |
68,284
+8,227
| +14% | +$1.17M |
|
302
Vanguard Extended Market ETF
VXF
$32.1B
| $10.1M | 0.04% |
61,284
+971
| +2% | +$144K |
|
303
Dow Inc
DOW
$22.1B
| $10.1M | 0.04% |
181,693
+1,222
| +0.7% | +$63.1K |
|
304
State Street Industrial Select Sector SPDR ETF
XLI
$34.7B
| $10M | 0.04% |
112,999
+8,664
| +8% | +$730K |
|
305
Grid Dynamics Holdings
GDYN
$632M
| $9.84M | 0.04% |
781,234
+742,318
| +1,907% | +$7.16M |
|
|
STKL
306
DELISTED
SunOpta
STKL
| $9.84M | 0.04% |
843,443
-177,323
| -17% | -$1.56M |
|
307
Rapid7
RPD
$827M
| $9.84M | 0.04% |
109,137
+4,049
| +4% | +$290K |
|
308
Iron Mountain
IRM
$37B
| $9.8M | 0.04% |
332,481
+13,225
| +4% | +$367K |
|
309
Vanguard Morningstar Mid-Cap Value ETF
VOE
$24.4B
| $9.76M | 0.04% |
82,014
-9,979
| -11% | -$1.12M |
|
|
DVAX
310
DELISTED
Dynavax Technologies
DVAX
| $9.72M | 0.04% |
2,183,453
+146,245
| +7% | +$662K |
|
311
Advanced Micro Devices
AMD
$788B
| $9.46M | 0.03% |
103,193
+30,209
| +41% | +$2.61M |
|
|
MMP
312
DELISTED
Magellan Midstream Partners, L.P.
MMP
| $9.46M | 0.03% |
222,943
-28,013
| -11% | -$1.12M |
|
313
Kinsale Capital Group
KNSL
$8.51B
| $9.4M | 0.03% |
46,953
-343
| -0.7% | -$75.2K |
|
|
XLNX
314
DELISTED
Xilinx Inc
XLNX
| $9.33M | 0.03% |
65,832
-3,638
| -5% | -$473K |
|
315
Broadcom
AVGO
$1.98T
| $9.32M | 0.03% |
212,950
+56,270
| +36% | +$2.19M |
|
316
Dynatrace
DT
$14.3B
| $9.21M | 0.03% |
212,831
+5,400
| +3% | +$214K |
|
|
317
Booking.com
BKNG
$159B
| $9.2M | 0.03% |
103,225
-291,675
| -74% | -$22.5M |
|
318
Generac Holdings
GNRC
$13.1B
| $9.19M | 0.03% |
40,424
+5
| +0% | +$1.08K |
|
319
iShares MSCI USA Min Vol Factor ETF
USMV
$24.4B
| $9.18M | 0.03% |
135,263
-4,925
| -4% | -$324K |
|
320
Baidu
BIDU
$35.6B
| $9.16M | 0.03% |
42,363
-1,003
| -2% | -$149K |
|
|
PFPT
321
DELISTED
Proofpoint, Inc.
PFPT
| $9.14M | 0.03% |
67,043
+21,421
| +47% | +$2.35M |
|
322
Xylem
XYL
$28.5B
| $9.14M | 0.03% |
89,833
-9,935
| -10% | -$934K |
|
323
Vanguard Total Bond Market
BND
$161B
| $9.14M | 0.03% |
103,625
-9,037
| -8% | -$795K |
|
|
AVLR
324
DELISTED
Avalara, Inc.
AVLR
| $9.11M | 0.03% |
55,246
+1,095
| +2% | +$175K |
|
325
Protolabs
PRLB
$2.17B
| $9.01M | 0.03% |
58,733
+1,291
| +2% | +$182K |
|
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HF
William Blair & Company's Q4 2020 Portfolio in Review
As of Q4 2020, William Blair & Company held 1,900 positions worth $27.3B, up 16% from $23.6B the previous quarter. Its ten largest holdings account for 25% of the portfolio.
William Blair & Company deployed $865M of net new capital in Q4 2020, opening 178 new positions and adding to 749 existing holdings. Its largest new stake was Seagen Inc. Common Stock: 91,539 shares worth $16M.
By sector, the portfolio is most concentrated in Technology at 28% of assets, up from 27% a quarter earlier, followed by Healthcare and Financials.
On the sell side, the largest reduction was Slack Technologies, Inc., an estimated $24.2M trimmed.
- William Blair & Company's largest Q4 2020 buy was Seagen Inc. Common Stock: 91,539 shares worth $16M.
- William Blair & Company added most to Splunk Inc in Q4 2020, an estimated $77.8M increase.
- William Blair & Company's biggest Q4 2020 reduction was Slack Technologies, Inc., cutting an estimated $24.2M.
- William Blair & Company fully exited Dunkin' Brands Group, Inc. in Q4 2020, selling an estimated $12.1M.
- William Blair & Company's ten largest holdings make up 25% of its $27.3B portfolio in Q4 2020.
- William Blair & Company opened 178 new positions and closed 72 in Q4 2020.
- William Blair & Company's portfolio value rose 16% quarter-over-quarter to $27.3B.
Based on William Blair & Company's 13F filing for Q4 2020, filed 9 Feb 2021.