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William Blair Investment Management

William Blair Investment Management Portfolio holdings

AUM $33.3B
1-Year Est. Return 44.76%
This Fund
S&P 500
This Quarter Est. Return
+9.84%
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
$31.2B
AUM Growth
+$2.49B
Cap. Flow
+$357M
Cap. Flow %
1.14%
Top 10 Hldgs %
20.4%
Holding
426
New
33
Increased
232
Reduced
127
Closed
31

Top Buys

Rank Stock Value
1
TECH icon
Bio-Techne
TECH
+$186M
2
TYL icon
Tyler Technologies
TYL
+$171M
3
NVDA icon
NVIDIA
NVDA
+$167M
4
NOW icon
ServiceNow
NOW
+$128M
5
BFAM icon
Bright Horizons
BFAM
+$109M

Top Sells

Rank Stock Value
1
PD icon
PagerDuty
PD
+$171M
2
BLDR icon
Builders FirstSource
BLDR
+$157M
3
PYPL icon
PayPal
PYPL
+$135M
4
NATI
National Instruments Corp
NATI
+$122M
5
LECO icon
Lincoln Electric
LECO
+$116M

Sector Composition

Rank Sector Weight
1 Technology 25.63%
2 Industrials 16.13%
3 Healthcare 15.71%
4 Consumer Discretionary 14.7%
5 Financials 8.24%
Name Market Value Portfolio Weight Shares or Principal Change
in Stake 		Capital Flow
DAR icon
351
Darling Ingredients
DAR
$10B
$1.64M 0.01%
25,769
+4,047
+19% +$247K
NVR icon
352
NVR
NVR
$16.8B
$1.61M 0.01%
254
– –
ETSY icon
353
Etsy
ETSY
$7.31B
$1.57M 0.01%
18,605
-4,605
-20% -$434K
WMT icon
354
Walmart Inc
WMT
$923B
$1.36M ﹤0.01%
+25,881
New +$1.31M
JCI icon
355
Johnson Controls International
JCI
$92.6B
$1.1M ﹤0.01%
16,108
+54
+0.3% +$3.32K
PYPL icon
356
PayPal
PYPL
$50.6B
$754K ﹤0.01%
11,306
-1,974,201
-99% -$135M
APTV icon
357
Aptiv
APTV
$10.1B
$666K ﹤0.01%
6,523
-18,865
-74% -$1.87M
BLK icon
358
Blackrock
BLK
$180B
$651K ﹤0.01%
942
-48,581
-98% -$32.5M
FERG icon
359
Ferguson
FERG
$47.4B
$508K ﹤0.01%
3,222
-31,974
-91% -$4.55M
SNA icon
360
Snap-on
SNA
$21.1B
$357K ﹤0.01%
1,239
– –
TKR icon
361
Timken Company
TKR
$9.03B
$353K ﹤0.01%
3,860
-10
-0.3% -$789
LKQ icon
362
LKQ Corp
LKQ
$6.25B
$323K ﹤0.01%
5,542
-14
-0.3% -$779
TOL icon
363
Toll Brothers
TOL
$13.9B
$318K ﹤0.01%
4,019
-14
-0.3% -$939
JBL icon
364
Jabil
JBL
$38.4B
$315K ﹤0.01%
2,921
-847
-22% -$74.6K
ACGL icon
365
Arch Capital
ACGL
$33.2B
$311K ﹤0.01%
4,160
-9
-0.2% -$651
RL icon
366
Ralph Lauren
RL
$23.6B
$308K ﹤0.01%
2,502
-6
-0.2% -$692
INGR icon
367
Ingredion
INGR
$6.54B
$305K ﹤0.01%
2,882
-7
-0.2% -$744
KNX icon
368
Knight Transportation
KNX
$11.6B
$305K ﹤0.01%
5,483
-14
-0.3% -$781
MSM icon
369
MSC Industrial Direct
MSM
$6.67B
$302K ﹤0.01%
3,165
-8
-0.3% -$734
ALK icon
370
Alaska Air
ALK
$5.29B
$301K ﹤0.01%
5,668
-15
-0.3% -$682
GOOG icon
371
Alphabet (Google) Class C
GOOG
$4.19T
$298K ﹤0.01%
2,467
+796
+48% +$92.1K
ITT icon
372
ITT
ITT
$19.4B
$292K ﹤0.01%
3,133
-8
-0.3% -$672
FLS icon
373
Flowserve
FLS
$10.3B
$283K ﹤0.01%
7,606
+1,298
+21% +$45K
HPE icon
374
Hewlett Packard
HPE
$77.8B
$269K ﹤0.01%
16,003
+4,676
+41% +$71.5K
WHR icon
375
Whirlpool
WHR
$2.79B
$266K ﹤0.01%
1,788
+251
+16% +$34.5K
13 14
15
16 17

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William Blair Investment Management's Q2 2023 Portfolio in Review

As of Q2 2023, William Blair Investment Management held 426 positions worth $31.2B, up 8.7% from $28.7B the previous quarter. Its ten largest holdings account for 20% of the portfolio.

William Blair Investment Management's Q2 2023 filing shows 33 new, 232 increased, 127 reduced and 31 closed positions. Its largest new stake was Bio-Techne: 2,314,458 shares worth $189M. The largest sale was PagerDuty, an estimated $171M.

By sector, the portfolio is most concentrated in Technology at 26% of assets, up from 25% a quarter earlier, followed by Industrials and Healthcare.

  • William Blair Investment Management's largest Q2 2023 buy was Bio-Techne: 2,314,458 shares worth $189M.
  • William Blair Investment Management added most to NVIDIA in Q2 2023, an estimated $167M increase.
  • William Blair Investment Management's biggest Q2 2023 reduction was Builders FirstSource, cutting an estimated $157M.
  • William Blair Investment Management fully exited PagerDuty in Q2 2023, selling an estimated $171M.
  • William Blair Investment Management's ten largest holdings make up 20% of its $31.2B portfolio in Q2 2023.
  • William Blair Investment Management opened 33 new positions and closed 31 in Q2 2023.
  • William Blair Investment Management's portfolio value rose 8.7% quarter-over-quarter to $31.2B.

Based on William Blair Investment Management's 13F filing for Q2 2023, filed 11 Aug 2023.