We are live on ! Find out more
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
+8.67%
1 Year Est. Return
+18.88%
3 Year Est. Return
+73.84%
5 Year Est. Return
+90.13%
10 Year Est. Return
+512.03%
AUM
$23B
AUM Growth
+$1.22B
Cap. Flow
-$156M
Cap. Flow %
-0.68%
Top 10 Hldgs %
22.7%
Holding
1,905
New
81
Increased
568
Reduced
855
Closed
91

Top Buys

Rank Stock Value
1
POOL icon
Pool Corp
POOL
+$43.2M
2
TEAM icon
Atlassian
TEAM
+$36.6M
3
NOVT icon
Novanta
NOVT
+$28.8M
4
PANW icon
Palo Alto Networks
PANW
+$23.2M
5
MSI icon
Motorola Solutions
MSI
+$20.1M

Top Sells

Rank Stock Value
1
ABMD
Abiomed Inc
ABMD
+$103M
2
PYPL icon
PayPal
PYPL
+$28.4M
3
DIS icon
Walt Disney
DIS
+$26.7M
4
KMX icon
CarMax
KMX
+$25.2M
5
CRM icon
Salesforce
CRM
+$24.3M

Sector Composition

Rank Sector Weight
1 Technology 22.31%
2 Healthcare 19.82%
3 Financials 12.49%
4 Industrials 11.58%
5 Consumer Discretionary 8.46%
Name Market Value Portfolio Weight Shares or Principal Change
in Stake 		Capital Flow
MSFT icon
1
Microsoft
MSFT
$2.93T
$883M 3.84%
3,682,125
-40,805
-1% -$9.79M
AAPL icon
2
Apple
AAPL
$4.99T
$850M 3.7%
6,545,345
-96,752
-1% -$13.8M
DXCM icon
3
DexCom
DXCM
$29.3B
$501M 2.18%
4,421,427
-200,321
-4% -$22M
IDXX icon
4
Idexx Laboratories
IDXX
$44.9B
$492M 2.14%
1,205,757
-19,111
-2% -$7.42M
V icon
5
Visa
V
$707B
$470M 2.05%
2,264,143
-19,838
-0.9% -$4M
AMZN icon
6
Amazon
AMZN
$2.45T
$465M 2.02%
5,541,141
-167,570
-3% -$16.6M
DHR icon
7
Danaher
DHR
$141B
$434M 1.89%
1,845,600
+36,484
+2% +$8.46M
MA icon
8
Mastercard
MA
$501B
$418M 1.82%
1,201,241
-13,201
-1% -$4.35M
GOOG icon
9
Alphabet (Google) Class C
GOOG
$4.07T
$363M 1.58%
4,087,451
-26,976
-0.7% -$2.57M
ZTS icon
10
Zoetis
ZTS
$33B
$343M 1.49%
2,339,568
+44,695
+2% +$6.61M
CSGP icon
11
CoStar Group
CSGP
$12B
$287M 1.25%
3,710,301
+256,608
+7% +$20.1M
JPM icon
12
JPMorgan Chase
JPM
$931B
$275M 1.2%
2,054,363
+142,651
+7% +$18.1M
SPY icon
13
State Street SPDR S&P 500 ETF Trust
SPY
$777B
$272M 1.18%
710,900
-3,070
-0.4% -$1.18M
WDAY icon
14
Workday
WDAY
$41B
$259M 1.13%
1,549,356
+67,596
+5% +$10.5M
SBUX icon
15
Starbucks
SBUX
$118B
$258M 1.12%
2,598,478
+15,252
+0.6% +$1.44M
VEEV icon
16
Veeva Systems
VEEV
$33.8B
$245M 1.07%
1,519,381
-32,914
-2% -$5.62M
GOOGL icon
17
Alphabet (Google) Class A
GOOGL
$4.09T
$228M 0.99%
2,589,072
+8,999
+0.3% +$855K
AON icon
18
Aon
AON
$80.1B
$228M 0.99%
759,945
-2,614
-0.3% -$764K
COST icon
19
Costco
COST
$431B
$217M 0.94%
474,306
+3,485
+0.7% +$1.7M
SYK icon
20
Stryker
SYK
$134B
$214M 0.93%
875,456
+12,155
+1% +$2.76M
ADBE icon
21
Adobe
ADBE
$104B
$214M 0.93%
635,553
+8,879
+1% +$2.84M
HD icon
22
Home Depot
HD
$339B
$214M 0.93%
676,226
+1,568
+0.2% +$478K
ABT icon
23
Abbott
ABT
$191B
$213M 0.92%
1,936,587
+71,287
+4% +$7.38M
POOL icon
24
Pool Corp
POOL
$7.04B
$208M 0.91%
689,597
+136,460
+25% +$43.2M
FISV
25
Fiserv Inc
FISV
$29.6B
$200M 0.87%
1,980,406
-53,260
-3% -$5.3M
1
2 3 4 5

Similar funds

SAM
Storebrand Asset Management Lysaker, Norway $34.8B AUM 25.49% 1-Year Est. Return
Daiwa Securities Group
Daiwa Securities Group Tokyo, Japan $34.8B AUM 20.7% 1-Year Est. Return
Chevy Chase Trust
Chevy Chase Trust Bethesda, Maryland $34.7B AUM 29.45% 1-Year Est. Return
VIA
Vanguard Investments Australia Victoria, Australia $34.6B AUM
Alyeska Investment Group
Alyeska Investment Group Chicago, Illinois $35.4B AUM 33.54% 1-Year Est. Return
Pacer Advisors
Pacer Advisors Malvern, Pennsylvania $35.6B AUM 18.19% 1-Year Est. Return
Parnassus Investments
Parnassus Investments San Francisco, California $34.1B AUM 20.22% 1-Year Est. Return
Kayne Anderson Rudnick Investment Management
Kayne Anderson Rudnick Investment Management Los Angeles, California $34B AUM 6.31% 1-Year Est. Return

William Blair & Company's Q4 2022 Portfolio in Review

As of Q4 2022, William Blair & Company held 1,905 positions worth $23B, up 5.6% from $21.8B the previous quarter. Its ten largest holdings account for 23% of the portfolio.

William Blair & Company's Q4 2022 filing shows 81 new, 568 increased, 855 reduced and 91 closed positions. Its largest new stake was Atlassian: 230,078 shares worth $29.6M. The largest sale was Abiomed Inc, an estimated $103M.

By sector, the portfolio is most concentrated in Technology at 22% of assets, down from 23% a quarter earlier, followed by Healthcare and Financials.

  • William Blair & Company's largest Q4 2022 buy was Atlassian: 230,078 shares worth $29.6M.
  • William Blair & Company added most to Pool Corp in Q4 2022, an estimated $43.2M increase.
  • William Blair & Company's biggest Q4 2022 reduction was PayPal, cutting an estimated $28.4M.
  • William Blair & Company fully exited Abiomed Inc in Q4 2022, selling an estimated $103M.
  • William Blair & Company's ten largest holdings make up 23% of its $23B portfolio in Q4 2022.
  • William Blair & Company opened 81 new positions and closed 91 in Q4 2022.
  • William Blair & Company's portfolio value rose 5.6% quarter-over-quarter to $23B.

Based on William Blair & Company's 13F filing for Q4 2022, filed 10 Feb 2023.