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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
VRTX icon
176
Vertex Pharmaceuticals
VRTX
$133B
$26M 0.09%
63,974
+45,128
+239% +$16.7M
MU icon
177
Micron Technology
MU
$1.03T
$25.7M 0.09%
301,049
-3,104
-1% -$231K
TJX icon
178
TJX Companies
TJX
$169B
$25.7M 0.09%
273,799
+5,292
+2% +$475K
YETI icon
179
Yeti Holdings
YETI
$3.85B
$25.6M 0.09%
493,981
-32,345
-6% -$1.43M
IWB icon
180
iShares Russell 1000 ETF
IWB
$50.2B
$25.6M 0.09%
97,425
-3,056
-3% -$748K
SPMD icon
181
State Street SPDR Portfolio S&P 400 Mid Cap ETF
SPMD
$19B
$25.4M 0.09%
521,986
+101,478
+24% +$4.52M
DVY icon
182
iShares Select Dividend ETF
DVY
$23.7B
$25.4M 0.09%
216,869
-7,251
-3% -$798K
ZBRA icon
183
Zebra Technologies
ZBRA
$17.9B
$25.2M 0.09%
92,077
-1,822
-2% -$416K
ORCL icon
184
Oracle
ORCL
$442B
$24.5M 0.08%
232,156
+20,236
+10% +$2.21M
PYPL icon
185
PayPal
PYPL
$50.6B
$24.2M 0.08%
393,675
-114,826
-23% -$6.58M
SDVY icon
186
First Trust SMID Cap Rising Dividend Achievers ETF
SDVY
$11.8B
$23.9M 0.08%
728,511
+160,677
+28% +$4.69M
PSX icon
187
Phillips 66
PSX
$90B
$23.8M 0.08%
179,050
+2,836
+2% +$339K
IRM icon
188
Iron Mountain
IRM
$37B
$23.7M 0.08%
339,085
-14,742
-4% -$925K
CDW icon
189
CDW
CDW
$17.1B
$23.4M 0.08%
102,730
+6,207
+6% +$1.32M
IJH icon
190
iShares Core S&P Mid-Cap ETF
IJH
$128B
$23M 0.08%
415,600
+21,765
+6% +$1.1M
PCTY icon
191
Paylocity
PCTY
$7.73B
$22.2M 0.08%
134,561
-6,679
-5% -$1.12M
CL icon
192
Colgate-Palmolive
CL
$73.6B
$22.1M 0.08%
277,217
-7,453
-3% -$560K
HOLX
193
DELISTED
Hologic
HOLX
$22M 0.08%
308,515
-16,569
-5% -$1.15M
INTC icon
194
Intel
INTC
$509B
$22M 0.08%
438,266
+12,447
+3% +$506K
IJR icon
195
iShares Core S&P Small-Cap ETF
IJR
$112B
$21.9M 0.07%
202,621
+24,791
+14% +$2.39M
APD icon
196
Air Products & Chemicals
APD
$67.7B
$21.5M 0.07%
78,688
+656
+0.8% +$180K
VWO icon
197
Vanguard FTSE Emerging Markets ETF
VWO
$126B
$21.5M 0.07%
522,892
-81,469
-13% -$3.23M
DT icon
198
Dynatrace
DT
$14.3B
$21.2M 0.07%
388,167
+82,705
+27% +$4.18M
GE icon
199
GE Aerospace
GE
$379B
$21M 0.07%
206,387
-3,239
-2% -$300K
EQIX icon
200
Equinix
EQIX
$105B
$21M 0.07%
26,066
-896
-3% -$688K
6 7
8
9 10

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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.