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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
+14.12%
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
$29.3B
AUM Growth
+$3.27B
Cap. Flow
-$91M
Cap. Flow %
-0.31%
Top 10 Hldgs %
24.41%
Holding
1,872
New
83
Increased
624
Reduced
816
Closed
87

Top Buys

Rank Stock Value
1
GWRE icon
Guidewire Software
GWRE
+$37.5M
2
SCHW
Charles Schwab
SCHW
+$37.1M
3
VLTO icon
Veralto
VLTO
+$17.1M
4
VRTX icon
Vertex Pharmaceuticals
VRTX
+$16.7M
5
CSGP icon
CoStar Group
CSGP
+$16.3M

Top Sells

Rank Stock Value
1
DHR icon
Danaher
DHR
+$37.6M
2
IRTC icon
iRhythm Holdings
IRTC
+$26.7M
3
DE icon
Deere & Co
DE
+$22.6M
4
TOST icon
Toast
TOST
+$21.2M
5
KO icon
Coca-Cola
KO
+$20.3M

Sector Composition

Rank Sector Weight
1 Technology 26.35%
2 Healthcare 17.08%
3 Financials 12.09%
4 Industrials 11.7%
5 Consumer Discretionary 8.53%
Name Market Value Portfolio Weight Shares or Principal Change
in Stake 		Capital Flow
SNA icon
651
Snap-on
SNA
$21.1B
$2.25M 0.01%
7,775
+30
+0.4% +$8.1K
CERT icon
652
Certara
CERT
$1.22B
$2.22M 0.01%
126,140
-21,688
-15% -$318K
KKR icon
653
KKR & Co
KKR
$99.5B
$2.21M 0.01%
26,642
+1,116
+4% +$75.6K
GAIN icon
654
Gladstone Investment Corp
GAIN
$654M
$2.19M 0.01%
154,529
+1,100
+0.7% +$15.2K
CSGS
655
DELISTED
CSG Systems International
CSGS
$2.14M 0.01%
40,205
+4,031
+11% +$206K
EWJ icon
656
iShares MSCI Japan ETF
EWJ
$23.1B
$2.12M 0.01%
33,103
-5
-0% -$306
VCIT icon
657
Vanguard Intermediate-Term Corporate Bond ETF
VCIT
$67.6B
$2.12M 0.01%
26,070
+1,292
+5% +$99.8K
MEC icon
658
Mayville Engineering Co
MEC
$596M
$2.09M 0.01%
144,989
-50,395
-26% -$625K
HEI.A icon
659
HEICO Corp Class A
HEI.A
$38B
$2.07M 0.01%
14,503
-1,167
-7% -$158K
IDV icon
660
iShares International Select Dividend ETF
IDV
$8.51B
$2.05M 0.01%
73,366
+2,825
+4% +$73.7K
CHRW icon
661
C.H. Robinson
CHRW
$17.1B
$2.04M 0.01%
23,598
-722
-3% -$60.5K
EVBG
662
DELISTED
Everbridge, Inc. Common Stock
EVBG
$2.04M 0.01%
83,735
-11,320
-12% -$244K
EXP icon
663
Eagle Materials
EXP
$6.47B
$2.02M 0.01%
9,959
-156
-2% -$27.4K
BAX icon
664
Baxter International
BAX
$13.9B
$2.01M 0.01%
52,039
+1,001
+2% +$35.4K
VLUE icon
665
iShares MSCI USA Value Factor ETF
VLUE
$9.59B
$2.01M 0.01%
19,869
-475
-2% -$44.2K
PRI icon
666
Primerica
PRI
$9.57B
$2.01M 0.01%
9,766
-1,008
-9% -$206K
STAG icon
667
STAG Industrial
STAG
$7.12B
$2.01M 0.01%
51,177
+1,065
+2% +$37.8K
ITA icon
668
iShares US Aerospace & Defense ETF
ITA
$15B
$1.98M 0.01%
15,619
-31,700
-67% -$3.66M
EA
669
DELISTED
Electronic Arts
EA
$1.96M 0.01%
14,352
-1,048
-7% -$139K
MGM icon
670
MGM Resorts International
MGM
$11.1B
$1.95M 0.01%
43,743
+681
+2% +$26.7K
AMG icon
671
Affiliated Managers Group
AMG
$9.57B
$1.95M 0.01%
12,855
-325
-2% -$43.7K
MAIN icon
672
Main Street Capital
MAIN
$5.47B
$1.94M 0.01%
44,854
-40
-0.1% -$1.63K
IJJ icon
673
iShares S&P Mid-Cap 400 Value ETF
IJJ
$9.03B
$1.94M 0.01%
16,986
-1,288
-7% -$132K
KEYS icon
674
Keysight
KEYS
$60.6B
$1.93M 0.01%
12,162
+1,385
+13% +$188K
DOCS icon
675
Doximity
DOCS
$4.45B
$1.93M 0.01%
68,813
-18,196
-21% -$430K
25 26
27
28 29

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William Blair & Company's Q4 2023 Portfolio in Review

As of Q4 2023, William Blair & Company held 1,872 positions worth $29.3B, up 13% from $26.1B the previous quarter. Its ten largest holdings account for 24% of the portfolio.

William Blair & Company's Q4 2023 filing shows 83 new, 624 increased, 816 reduced and 87 closed positions. Its largest new stake was Veralto: 229,539 shares worth $18.9M. The largest sale was Danaher, an estimated $37.6M.

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

  • William Blair & Company's largest Q4 2023 buy was Veralto: 229,539 shares worth $18.9M.
  • William Blair & Company added most to Guidewire Software in Q4 2023, an estimated $37.5M increase.
  • William Blair & Company's biggest Q4 2023 reduction was Danaher, cutting an estimated $37.6M.
  • William Blair & Company fully exited Seagen Inc. Common Stock in Q4 2023, selling an estimated $13.8M.
  • William Blair & Company's ten largest holdings make up 24% of its $29.3B portfolio in Q4 2023.
  • William Blair & Company opened 83 new positions and closed 87 in Q4 2023.
  • William Blair & Company's portfolio value rose 13% quarter-over-quarter to $29.3B.

Based on William Blair & Company's 13F filing for Q4 2023, filed 12 Feb 2024.