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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
+10.07%
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
$31.8B
AUM Growth
+$2.49B
Cap. Flow
+$139M
Cap. Flow %
0.44%
Top 10 Hldgs %
23.43%
Holding
1,869
New
90
Increased
714
Reduced
722
Closed
82

Top Buys

Rank Stock Value
1
UBER icon
Uber
UBER
+$24.2M
2
IOT icon
Samsara
IOT
+$23.9M
3
PRCT icon
Procept Biorobotics
PRCT
+$20.5M
4
ISRG icon
Intuitive Surgical
ISRG
+$19.9M
5
AMZN icon
Amazon
AMZN
+$19.4M

Top Sells

Rank Stock Value
1
SPLK
Splunk Inc
SPLK
+$67.1M
2
MA icon
Mastercard
MA
+$65.4M
3
AON icon
Aon
AON
+$40.3M
4
FLYW icon
Flywire
FLYW
+$25.7M
5
DV icon
DoubleVerify
DV
+$19.5M

Sector Composition

Rank Sector Weight
1 Technology 25.75%
2 Healthcare 17.03%
3 Financials 12.35%
4 Industrials 11.88%
5 Consumer Discretionary 8.53%
Name Market Value Portfolio Weight Shares or Principal Change
in Stake 		Capital Flow
JOBY icon
1476
Joby Aviation
JOBY
$7.87B
$133K ﹤0.01%
24,880
+5,925
+31% +$33.6K
OPK icon
1477
Opko Health
OPK
$1.04B
$132K ﹤0.01%
109,786
– –
CDXS icon
1478
Codexis
CDXS
$175M
$126K ﹤0.01%
36,005
– –
SEAT icon
1479
Vivid Seats
SEAT
$81.6M
$124K ﹤0.01%
1,039
-55
-5% -$6.45K
PIO icon
1480
Invesco Global Water ETF
PIO
$278M
$124K ﹤0.01%
2,884
– –
IYG icon
1481
iShares US Financial Services ETF
IYG
$2.22B
$123K ﹤0.01%
1,858
+1
+0.1% +$62
AUTL
1482
Autolus Therapeutics
AUTL
$564M
$122K ﹤0.01%
19,107
-8,000
-30% -$49.9K
MODD icon
1483
Modular Medical
MODD
$11.2M
$121K ﹤0.01%
2,186
– –
TDOC icon
1484
Teladoc Health
TDOC
$1.22B
$120K ﹤0.01%
7,980
-10,818
-58% -$196K
DGS icon
1485
WisdomTree Emerging Markets SmallCap Dividend Fund
DGS
$1.78B
$119K ﹤0.01%
2,342
– –
EXTR icon
1486
Extreme Networks
EXTR
$3.2B
$118K ﹤0.01%
+10,210
New +$139K
CWI icon
1487
State Street SPDR MSCI ACWI ex-US ETF
CWI
$2.87B
$115K ﹤0.01%
4,041
– –
BDSX icon
1488
Biodesix
BDSX
$256M
$114K ﹤0.01%
3,990
-500
-11% -$17.1K
SLQT icon
1489
SelectQuote
SLQT
$124M
$110K ﹤0.01%
55,000
– –
ALLK
1490
DELISTED
Allakos
ALLK
$108K ﹤0.01%
85,817
-22,900
-21% -$35.6K
DIV icon
1491
Global X SuperDividend US ETF
DIV
$776M
$108K ﹤0.01%
6,209
-5,500
-47% -$93.3K
ARDX icon
1492
Ardelyx
ARDX
$1.03B
$108K ﹤0.01%
14,785
+285
+2% +$2.44K
DFTX
1493
Definium Therapeutics
DFTX
$5.75B
$107K ﹤0.01%
+11,341
New +$64.7K
AOA icon
1494
iShares Core 80/20 Aggressive Allocation ETF
AOA
$3.28B
$106K ﹤0.01%
1,439
– –
PIII icon
1495
P3 Health Partners
PIII
$38.9M
$104K ﹤0.01%
2,027
– –
SRLN icon
1496
State Street Blackstone Senior Loan ETF
SRLN
$5.37B
$104K ﹤0.01%
2,472
+116
+5% +$4.86K
LL
1497
DELISTED
LL Flooring Holdings, Inc.
LL
$104K ﹤0.01%
56,865
-1,370
-2% -$3.31K
PCT icon
1498
PureCycle Technologies
PCT
$1.44B
$102K ﹤0.01%
16,471
– –
HEDJ icon
1499
WisdomTree Europe Hedged Equity Fund
HEDJ
$1.87B
$102K ﹤0.01%
2,120
– –
ACTG icon
1500
Acacia Research
ACTG
$455M
$102K ﹤0.01%
+19,200
New +$80.1K
58 59
60
61 62

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William Blair & Company's Q1 2024 Portfolio in Review

As of Q1 2024, William Blair & Company held 1,869 positions worth $31.8B, up 8.5% from $29.3B the previous quarter. Its ten largest holdings account for 23% of the portfolio.

William Blair & Company's Q1 2024 filing shows 90 new, 714 increased, 722 reduced and 82 closed positions. Its largest new stake was Procept Biorobotics: 429,793 shares worth $21.2M. The largest sale was Splunk Inc, an estimated $67.1M.

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

  • William Blair & Company's largest Q1 2024 buy was Procept Biorobotics: 429,793 shares worth $21.2M.
  • William Blair & Company added most to Uber in Q1 2024, an estimated $24.2M increase.
  • William Blair & Company's biggest Q1 2024 reduction was Mastercard, cutting an estimated $65.4M.
  • William Blair & Company fully exited Splunk Inc in Q1 2024, selling an estimated $67.1M.
  • William Blair & Company's ten largest holdings make up 23% of its $31.8B portfolio in Q1 2024.
  • William Blair & Company opened 90 new positions and closed 82 in Q1 2024.
  • William Blair & Company's portfolio value rose 8.5% quarter-over-quarter to $31.8B.

Based on William Blair & Company's 13F filing for Q1 2024, filed 9 May 2024.