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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
VO icon
201
Vanguard Morningstar Mid-Cap ETF
VO
$110B
$20.8M 0.07%
357,304
+14,456
+4% +$772K
IUSG icon
202
iShares Core S&P US Growth ETF
IUSG
$33.7B
$20.7M 0.07%
198,370
-14,582
-7% -$1.44M
SYY icon
203
Sysco
SYY
$40.5B
$20.5M 0.07%
279,814
-43,374
-13% -$2.99M
VOE icon
204
Vanguard Morningstar Mid-Cap Value ETF
VOE
$24.4B
$20M 0.07%
137,807
+261
+0.2% +$35.1K
RTX icon
205
RTX Corp
RTX
$300B
$19.9M 0.07%
236,009
-5,947
-2% -$471K
AJG icon
206
Arthur J. Gallagher & Co
AJG
$65.5B
$19.8M 0.07%
87,896
+6,920
+9% +$1.64M
SNPS icon
207
Synopsys
SNPS
$79B
$19.3M 0.07%
37,413
+6,391
+21% +$3.27M
MDLZ icon
208
Mondelez International
MDLZ
$79.4B
$19M 0.06%
262,530
-1,360
-0.5% -$93.2K
PLNT icon
209
Planet Fitness
PLNT
$3.65B
$19M 0.06%
259,925
-33,313
-11% -$2.05M
VLTO icon
210
Veralto
VLTO
$23.6B
$18.9M 0.06%
+229,539
New +$17.1M
AXON
211
Axon Enterprise
AXON
$48.7B
$18.8M 0.06%
72,964
-312
-0.4% -$70.3K
SBAC icon
212
SBA Communications
SBAC
$19.4B
$18.8M 0.06%
74,051
-5,254
-7% -$1.18M
ROP icon
213
Roper Technologies
ROP
$39.1B
$18.7M 0.06%
34,270
+893
+3% +$460K
DOW icon
214
Dow Inc
DOW
$22.1B
$18.6M 0.06%
339,899
+533
+0.2% +$27.2K
TEAM icon
215
Atlassian
TEAM
$39.4B
$18.5M 0.06%
77,765
-6,098
-7% -$1.2M
EOG icon
216
EOG Resources
EOG
$75.1B
$18.5M 0.06%
152,550
+3,910
+3% +$487K
ESGD icon
217
iShares ESG Aware MSCI EAFE ETF
ESGD
$12.3B
$18.2M 0.06%
241,480
-8,576
-3% -$607K
XLE icon
218
State Street Energy Select Sector SPDR ETF
XLE
$39.9B
$18.2M 0.06%
434,070
+41,896
+11% +$1.79M
IRDM icon
219
Iridium Communications
IRDM
$5.26B
$18M 0.06%
438,526
-156,327
-26% -$6.19M
ONT
220
Onterris Inc
ONT
$576M
$18M 0.06%
561,394
-241,172
-30% -$6.92M
EXEL icon
221
Exelixis
EXEL
$12.5B
$18M 0.06%
750,016
+11,128
+2% +$242K
VMC icon
222
Vulcan Materials
VMC
$36.3B
$17.9M 0.06%
79,051
-184
-0.2% -$39K
GDDY icon
223
GoDaddy
GDDY
$11.6B
$17.9M 0.06%
168,248
-12,809
-7% -$1.15M
THS
224
DELISTED
Treehouse Foods
THS
$17.5M 0.06%
421,682
-20,227
-5% -$830K
XMTR icon
225
Xometry
XMTR
$5.34B
$17.4M 0.06%
485,730
-56,662
-10% -$1.22M
7 8
9
10 11

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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.