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William Blair & Company

William Blair & Company Portfolio holdings

AUM $38.4B
1-Year Est. Return 25.71%
This Fund
S&P 500
This Quarter Est. Return
+8.67%
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
$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
SYRE icon
1601
Spyre Therapeutics
SYRE
$9.18B
$34.5K ﹤0.01%
3,064
– –
BMVP icon
1602
Invesco Bloomberg MVP Multi-factor ETF
BMVP
$106M
$34.3K ﹤0.01%
990
– –
EMAN
1603
DELISTED
eMagin Corporation
EMAN
$34.1K ﹤0.01%
40,100
– –
IFGL icon
1604
iShares International Developed Real Estate ETF
IFGL
$82.2M
$33.7K ﹤0.01%
1,600
– –
PFXF icon
1605
VanEck Preferred Securities ex Financials ETF
PFXF
$2.47B
$33.4K ﹤0.01%
2,000
– –
HTZWW
1606
Hertz Global Holdings Warrants
HTZWW
$112M
$32.8K ﹤0.01%
4,404
– –
OUSA icon
1607
ALPS O'Shares U.S. Quality Dividend ETF
OUSA
$758M
$32.8K ﹤0.01%
792
+30
+4% +$1.22K
IVOO icon
1608
Vanguard S&P Mid-Cap 400 ETF
IVOO
$3.93B
$32.7K ﹤0.01%
400
-260
-39% -$21.3K
UHAL icon
1609
U-Haul Holding Co
UHAL
$14.5B
$32.6K ﹤0.01%
541
-5,149
-90% -$296K
SCHM icon
1610
Schwab US Mid-Cap ETF
SCHM
$15.2B
$32.4K ﹤0.01%
1,482
– –
AXDX
1611
DELISTED
Accelerate Diagnostics
AXDX
$32.4K ﹤0.01%
4,588
-12,366
-73% -$135K
SPXL icon
1612
Direxion Daily S&P 500 Bull 3x ETF
SPXL
$7.27B
$32.2K ﹤0.01%
+518
New +$33.4K
UPH
1613
DELISTED
UpHealth, Inc.
UPH
$32.1K ﹤0.01%
19,710
– –
IXG icon
1614
iShares Global Financials ETF
IXG
$698M
$31.8K ﹤0.01%
453
-149
-25% -$10.2K
CTXR icon
1615
Citius Pharmaceuticals
CTXR
$21M
$31.8K ﹤0.01%
+1,611
New +$44K
EWG icon
1616
iShares MSCI Germany ETF
EWG
$1.67B
$31.5K ﹤0.01%
1,272
– –
GEF.B icon
1617
Greif Class B
GEF.B
$4.24B
$31.3K ﹤0.01%
400
– –
SEGG
1618
Sports Entertainment Gaming Global Corp
SEGG
$7.92M
$30.6K ﹤0.01%
124
– –
FM
1619
DELISTED
iShares Frontier and Select EM ETF
FM
$30.2K ﹤0.01%
1,184
– –
REM icon
1620
iShares Mortgage Real Estate ETF
REM
$543M
$29.5K ﹤0.01%
1,300
– –
SCWO icon
1621
374Water
SCWO
$41.1M
$28.6K ﹤0.01%
+1,000
New +$31.7K
PBW icon
1622
Invesco WilderHill Clean Energy ETF
PBW
$458M
$28.5K ﹤0.01%
744
-10
-1% -$445
GSIE icon
1623
Goldman Sachs ActiveBeta International Equity ETF
GSIE
$6.14B
$28.5K ﹤0.01%
991
– –
RNAC icon
1624
Cartesian Therapeutics
RNAC
$262M
$28.3K ﹤0.01%
834
– –
GBF icon
1625
iShares Government/Credit Bond ETF
GBF
$128M
$27.7K ﹤0.01%
270
– –
63 64
65
66 67

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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.