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William Blair Investment Management Portfolio holdings
AUM
$33.3B
1-Year Est. Return
44.76%
This Fund
S&P 500
This Quarter
Est. Return
+25.48%
1 Year Est. Return
+44.76%
3 Year Est. Return
+140.8%
5 Year Est. Return
+166.51%
10 Year Est. Return
+978.6%
AUM
$30B
AUM Growth
+$4.37B
(+17%)
Cap. Flow
-$974M
Cap. Flow
% of AUM
-3.24%
Top 10 Holdings %
Top 10 Hldgs %
17.75%
Holding
375
New
32
Increased
99
Reduced
224
Closed
19
Top Buys
| Rank | Stock | Value |
|---|---|---|
| 1 |
Bio-Techne
TECH
|
+$212M |
| 2 |
10x Genomics
TXG
|
+$186M |
| 3 |
TMX
Terminix Global Holdings, Inc.
TMX
|
+$126M |
| 4 |
Merit Medical Systems
MMSI
|
+$125M |
| 5 |
ZEN
ZENDESK INC
ZEN
|
+$121M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
iRhythm Holdings
IRTC
|
+$255M |
| 2 |
EXAS
Exact Sciences
EXAS
|
+$246M |
| 3 |
TransUnion
TRU
|
+$166M |
| 4 |
Brookfield
BN
|
+$112M |
| 5 |
TSMC
TSM
|
+$104M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Technology | 26.72% |
| 2 | Healthcare | 19.58% |
| 3 | Industrials | 13.65% |
| 4 | Consumer Discretionary | 13.62% |
| 5 | Financials | 6.72% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
176
Glacier Bancorp
GBCI
$6.4B
| $28.2M | 0.09% |
613,909
+305,111
| +99% | +$12.3M |
|
177
ESCO Technologies
ESE
$7.78B
| $28.2M | 0.09% |
273,632
-34,151
| -11% | -$3.22M |
|
178
Prologis
PLD
$134B
| $28.2M | 0.09% |
283,321
+3,687
| +1% | +$373K |
|
|
CCMP
179
DELISTED
CMC Materials, Inc. Common Stock
CCMP
| $28.2M | 0.09% |
186,255
+14,427
| +8% | +$2.16M |
|
180
Luxfer Holdings
LXFR
$457M
| $27.9M | 0.09% |
1,700,597
+90,940
| +6% | +$1.33M |
|
181
Idacorp
IDA
$8.21B
| $27.6M | 0.09% |
287,901
+45,819
| +19% | +$4.17M |
|
182
Infosys
INFY
$49.7B
| $26.3M | 0.09% |
1,552,895
-35,830
| -2% | -$548K |
|
183
Upland Software
UPLD
$14.9M
| $25.9M | 0.09% |
56,431
+21,719
| +63% | +$9.56M |
|
184
Vulcan Materials
VMC
$36.3B
| $25.7M | 0.09% |
173,049
-47,447
| -22% | -$6.77M |
|
|
FOLD
185
DELISTED
Amicus Therapeutics
FOLD
| $24.7M | 0.08% |
1,071,651
+105,888
| +11% | +$2.17M |
|
186
Knowles
KN
$3.33B
| $24.4M | 0.08% |
1,325,332
-56,103
| -4% | -$938K |
|
187
Albany International
AIN
$1.81B
| $24.4M | 0.08% |
332,369
+32,502
| +11% | +$2.05M |
|
188
Service Corp International
SCI
$11.5B
| $24.4M | 0.08% |
495,946
-54,379
| -10% | -$2.58M |
|
189
Axogen
AXGN
$2.67B
| $24.2M | 0.08% |
1,351,771
+82,686
| +7% | +$1.21M |
|
190
Arthur J. Gallagher & Co
AJG
$65.5B
| $24.1M | 0.08% |
194,923
-53,435
| -22% | -$6.09M |
|
191
Allegion
ALLE
$14.1B
| $24.1M | 0.08% |
206,668
-54,648
| -21% | -$5.94M |
|
|
HR
192
DELISTED
Healthcare Realty Trust Incorporated
HR
| $24M | 0.08% |
811,831
-41,085
| -5% | -$1.23M |
|
193
RingCentral
RNG
$5.25B
| $23.6M | 0.08% |
62,321
+16,497
| +36% | +$5.13M |
|
|
WNS
194
DELISTED
WNS Holdings
WNS
| $23.5M | 0.08% |
326,456
+31,802
| +11% | +$2.13M |
|
195
Littelfuse
LFUS
$11.7B
| $23.3M | 0.08% |
91,443
-24,555
| -21% | -$5.44M |
|
|
ONT
196
Onterris Inc
ONT
$576M
| $23.2M | 0.08% |
748,360
+306,205
| +69% | +$8.71M |
|
197
Brady Corp
BRC
$4.48B
| $23.1M | 0.08% |
436,964
-8,598
| -2% | -$380K |
|
198
Pediatrix Medical
MD
$2.15B
| $23M | 0.08% |
936,693
+19,228
| +2% | +$361K |
|
199
SBA Communications
SBAC
$19.4B
| $22.3M | 0.07% |
79,128
-17,609
| -18% | -$5.17M |
|
200
Veeva Systems
VEEV
$39.2B
| $22.1M | 0.07% |
81,345
-21,508
| -21% | -$6.03M |
|
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William Blair Investment Management's Q4 2020 Portfolio in Review
As of Q4 2020, William Blair Investment Management held 375 positions worth $30B, up 17% from $25.7B the previous quarter. Its ten largest holdings account for 18% of the portfolio.
William Blair Investment Management withdrew a net $974M in Q4 2020, closing 19 positions and reducing 224 holdings. Its most notable exit was iRhythm Holdings, an estimated $255M position sold in full.
By sector, the portfolio is most concentrated in Technology at 27% of assets, up from 26% a quarter earlier, followed by Healthcare and Industrials.
Against the trend, William Blair Investment Management opened a new position in Bio-Techne worth $232M.
- William Blair Investment Management's largest Q4 2020 buy was Bio-Techne: 2,923,168 shares worth $232M.
- William Blair Investment Management added most to Terminix Global Holdings, Inc. in Q4 2020, an estimated $126M increase.
- William Blair Investment Management's biggest Q4 2020 reduction was Exact Sciences, cutting an estimated $246M.
- William Blair Investment Management fully exited iRhythm Holdings in Q4 2020, selling an estimated $255M.
- William Blair Investment Management's ten largest holdings make up 18% of its $30B portfolio in Q4 2020.
- William Blair Investment Management opened 32 new positions and closed 19 in Q4 2020.
- William Blair Investment Management's portfolio value rose 17% quarter-over-quarter to $30B.
Based on William Blair Investment Management's 13F filing for Q4 2020, filed 9 Feb 2021.