We are live on ! Find out more
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
+10.03%
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
$26.1B
AUM Growth
+$841M
Cap. Flow
-$982M
Cap. Flow %
-3.76%
Top 10 Hldgs %
17.15%
Holding
419
New
32
Increased
142
Reduced
225
Closed
18

Top Buys

Rank Stock Value
1
MZTI
The Marzetti Company
MZTI
+$142M
2
AMBA icon
Ambarella
AMBA
+$92.4M
3
G icon
Genpact
G
+$92.1M
4
CMG icon
Chipotle Mexican Grill
CMG
+$83.1M
5
CG icon
Carlyle Group
CG
+$81.2M

Sector Composition

Rank Sector Weight
1 Technology 22.72%
2 Healthcare 17.24%
3 Industrials 15.95%
4 Consumer Discretionary 14.35%
5 Financials 11.06%
Name Market Value Portfolio Weight Shares or Principal Change
in Stake
Capital Flow
ARGO
251
DELISTED
Argo Group International Holdings, Ltd.
ARGO
$22.2M 0.09%
859,957
-36,165
-4% -$891K
WINA icon
252
Winmark
WINA
$1.24B
$22.1M 0.08%
93,726
-10,283
-10% -$2.45M
IPAR icon
253
Interparfums
IPAR
$3.78B
$22.1M 0.08%
228,773
+14,509
+7% +$1.26M
RYAAY icon
254
Ryanair
RYAAY
$30.8B
$22M 0.08%
733,185
-2,038,278
-74% -$57.9M
ANIP icon
255
ANI Pharmaceuticals
ANIP
$1.73B
$21.2M 0.08%
527,465
-19,924
-4% -$748K
ODFL icon
256
Old Dominion Freight Line
ODFL
$44.1B
$21.2M 0.08%
+149,526
New +$21.2M
CHX
257
DELISTED
ChampionX
CHX
$21.2M 0.08%
730,790
+5,482
+0.8% +$151K
SLVM icon
258
Sylvamo
SLVM
$1.53B
$21.1M 0.08%
434,914
-103,255
-19% -$4.96M
SQM icon
259
Sociedad Química y Minera de Chile
SQM
$20.4B
$20.8M 0.08%
261,131
+46,393
+22% +$4.29M
OPLN
260
Openlane
OPLN
$4.34B
$20.7M 0.08%
1,584,606
-32,744
-2% -$439K
DBI icon
261
Designer Brands
DBI
$311M
$20M 0.08%
2,047,685
-46,637
-2% -$629K
NUVA
262
DELISTED
NuVasive, Inc.
NUVA
$19.6M 0.07%
474,787
+351,649
+286% +$14.2M
LXFR icon
263
Luxfer Holdings
LXFR
$457M
$19.6M 0.07%
1,426,196
-149,858
-10% -$2.19M
HASI icon
264
Hannon Armstrong Sustainable Infrastructure Capital
HASI
$5.37B
$19.6M 0.07%
675,201
+159,515
+31% +$4.64M
VERX icon
265
Vertex
VERX
$2B
$19.3M 0.07%
1,328,521
+11,323
+0.9% +$181K
VITL icon
266
Vital Farms
VITL
$495M
$19.2M 0.07%
1,285,335
+8,583
+0.7% +$118K
IBN icon
267
ICICI Bank
IBN
$107B
$18.9M 0.07%
+865,000
New +$19.3M
HZNP
268
DELISTED
Horizon Therapeutics Public Limited Company Ordinary Shares
HZNP
$18.4M 0.07%
162,062
-1,863,759
-92% -$155M
ENPH icon
269
Enphase Energy
ENPH
$5.39B
$18.1M 0.07%
68,387
-20,211
-23% -$5.88M
GOGO icon
270
Gogo Inc
GOGO
$383M
$18M 0.07%
1,221,831
+9,703
+0.8% +$140K
SPB icon
271
Spectrum Brands
SPB
$2.03B
$17.8M 0.07%
291,439
-11,889
-4% -$599K
EXP icon
272
Eagle Materials
EXP
$6.47B
$17.7M 0.07%
133,265
+8,452
+7% +$1.07M
SFM icon
273
Sprouts Farmers Market
SFM
$8.03B
$17.7M 0.07%
545,772
-29,372
-5% -$914K
PRO
274
DELISTED
PROS Holdings
PRO
$17.4M 0.07%
717,876
+5,813
+0.8% +$143K
MWA icon
275
Mueller Water Products
MWA
$4.09B
$17.3M 0.07%
1,612,279
+83,686
+5% +$934K

Similar funds

William Blair Investment Management's Q4 2022 Portfolio in Review

As of Q4 2022, William Blair Investment Management held 419 positions worth $26.1B, up 3.3% from $25.3B the previous quarter. Its ten largest holdings account for 17% of the portfolio.

William Blair Investment Management withdrew a net $982M in Q4 2022, closing 18 positions and reducing 225 holdings. Its most notable exit was Abiomed Inc, an estimated $241M position sold in full.

By sector, the portfolio is most concentrated in Technology at 23% of assets, up from 23% a quarter earlier, followed by Healthcare and Industrials.

Against the trend, William Blair Investment Management opened a new position in The Marzetti Company worth $148M.

  • William Blair Investment Management's largest Q4 2022 buy was The Marzetti Company: 748,865 shares worth $148M.
  • William Blair Investment Management added most to Chipotle Mexican Grill in Q4 2022, an estimated $83.1M increase.
  • William Blair Investment Management's biggest Q4 2022 reduction was Horizon Therapeutics Public Limited Company Ordinary Shares, cutting an estimated $155M.
  • William Blair Investment Management fully exited Abiomed Inc in Q4 2022, selling an estimated $241M.
  • William Blair Investment Management's ten largest holdings make up 17% of its $26.1B portfolio in Q4 2022.
  • William Blair Investment Management opened 32 new positions and closed 18 in Q4 2022.
  • William Blair Investment Management's portfolio value rose 3.3% quarter-over-quarter to $26.1B.

Based on William Blair Investment Management's 13F filing for Q4 2022, filed 9 Feb 2023.