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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
MS icon
251
Morgan Stanley
MS
$342B
$15.1M 0.05%
162,004
-12,508
-7% -$1M
FDX icon
252
FedEx
FDX
$77.3B
$15M 0.05%
59,382
-192
-0.3% -$48.8K
EFX icon
253
Equifax
EFX
$21.2B
$14.8M 0.05%
60,040
-31
-0.1% -$6.29K
NTRS icon
254
Northern Trust
NTRS
$35B
$14.8M 0.05%
175,550
-14,766
-8% -$1.09M
SHAK icon
255
Shake Shack
SHAK
$2.94B
$14.7M 0.05%
198,833
-5,172
-3% -$317K
PAVE icon
256
Global X US Infrastructure Development ETF
PAVE
$14.3B
$14.7M 0.05%
426,514
+1,805
+0.4% +$56.2K
SMG icon
257
ScottsMiracle-Gro
SMG
$3.62B
$14.6M 0.05%
228,994
-29,627
-11% -$1.6M
IEMG icon
258
iShares Core MSCI Emerging Markets ETF
IEMG
$158B
$14.6M 0.05%
287,763
+7,889
+3% +$382K
FIVE icon
259
Five Below
FIVE
$13.2B
$14.5M 0.05%
68,181
+11,058
+19% +$2.03M
GLOB icon
260
Globant
GLOB
$1.67B
$14.4M 0.05%
60,546
-3,754
-6% -$767K
TWLO icon
261
Twilio
TWLO
$37.9B
$14.4M 0.05%
189,680
-34,809
-16% -$2.17M
XLK icon
262
State Street Technology Select Sector SPDR ETF
XLK
$124B
$14.3M 0.05%
149,020
+12,250
+9% +$1.09M
PM icon
263
Philip Morris
PM
$290B
$14.1M 0.05%
149,729
-12,298
-8% -$1.13M
KRNT icon
264
Kornit Digital
KRNT
$817M
$14M 0.05%
732,724
-83,834
-10% -$1.45M
TSCO icon
265
Tractor Supply
TSCO
$19B
$13.7M 0.05%
317,820
-20,060
-6% -$819K
ACWX icon
266
iShares MSCI ACWI ex US ETF
ACWX
$12B
$13.5M 0.05%
263,816
-23,815
-8% -$1.15M
MKL icon
267
Markel Group
MKL
$22.8B
$13.4M 0.05%
9,461
-481
-5% -$682K
PDEC icon
268
Innovator US Equity Power Buffer ETF December
PDEC
$997M
$13.3M 0.05%
+379,062
New +$12.7M
CI icon
269
Cigna
CI
$73.3B
$13.3M 0.05%
44,313
-446
-1% -$130K
LMT icon
270
Lockheed Martin
LMT
$140B
$13.3M 0.05%
29,256
-2,987
-9% -$1.32M
AMAT icon
271
Applied Materials
AMAT
$435B
$13.1M 0.04%
80,775
+911
+1% +$134K
VRRM icon
272
Verra Mobility
VRRM
$714M
$13M 0.04%
564,409
+3,889
+0.7% +$79.8K
WFC icon
273
Wells Fargo
WFC
$269B
$13M 0.04%
263,422
+10,473
+4% +$452K
AGCO icon
274
AGCO
AGCO
$7.11B
$12.9M 0.04%
106,413
-15,059
-12% -$1.76M
EFG icon
275
iShares MSCI EAFE Growth ETF
EFG
$17.4B
$12.9M 0.04%
133,043
-21,015
-14% -$1.88M
9 10
11
12 13

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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.