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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
NUE icon
426
Nucor
NUE
$61.9B
$5.76M 0.02%
33,079
+687
+2% +$109K
SNOW icon
427
Snowflake
SNOW
$115B
$5.72M 0.02%
28,756
+309
+1% +$52.2K
ET icon
428
Energy Transfer Partners
ET
$72.1B
$5.69M 0.02%
412,492
+28,658
+7% +$389K
DVN icon
429
Devon Energy
DVN
$49.3B
$5.64M 0.02%
124,512
-18,105
-13% -$829K
TTWO icon
430
Take-Two Interactive
TTWO
$45.4B
$5.64M 0.02%
35,035
-294
-0.8% -$43.9K
XYL icon
431
Xylem
XYL
$28.5B
$5.64M 0.02%
49,283
-4,220
-8% -$421K
DHI icon
432
D.R. Horton
DHI
$40.8B
$5.64M 0.02%
37,080
-55
-0.1% -$6.77K
AMLP icon
433
Alerian MLP ETF
AMLP
$13.2B
$5.6M 0.02%
131,775
+3,477
+3% +$147K
CMCSA icon
434
Comcast
CMCSA
$90.4B
$5.6M 0.02%
127,708
-1,537
-1% -$65.9K
LFUS icon
435
Littelfuse
LFUS
$11.7B
$5.58M 0.02%
20,847
-8
-0% -$1.92K
BILL icon
436
BILL Holdings
BILL
$4.85B
$5.57M 0.02%
68,294
+13,584
+25% +$1.12M
WMG icon
437
Warner Music
WMG
$13B
$5.52M 0.02%
154,342
-2,494
-2% -$82.3K
FND icon
438
Floor & Decor
FND
$6.32B
$5.52M 0.02%
49,496
-3,921
-7% -$361K
HACK icon
439
Amplify Cybersecurity ETF
HACK
$3B
$5.48M 0.02%
90,648
-700
-0.8% -$38.5K
SHY icon
440
iShares 1-3 Year Treasury Bond ETF
SHY
$25.5B
$5.47M 0.02%
66,710
+11,492
+21% +$934K
IHI icon
441
iShares US Medical Devices ETF
IHI
$3.48B
$5.45M 0.02%
101,043
+7,206
+8% +$352K
RSG icon
442
Republic Services
RSG
$65.6B
$5.45M 0.02%
33,039
-58
-0.2% -$9K
BOTZ icon
443
Global X Robotics & Artificial Intelligence ETF
BOTZ
$3.59B
$5.45M 0.02%
191,081
-909
-0.5% -$23.2K
LHX icon
444
L3Harris
LHX
$54.1B
$5.43M 0.02%
25,780
+22
+0.1% +$4.13K
NOBL icon
445
ProShares S&P 500 Dividend Aristocrats ETF
NOBL
$11.9B
$5.4M 0.02%
113,450
+5,558
+5% +$249K
LPLA icon
446
LPL Financial
LPLA
$29.7B
$5.34M 0.02%
23,455
-1,202
-5% -$270K
MEDP icon
447
Medpace
MEDP
$16.7B
$5.31M 0.02%
17,330
+4,656
+37% +$1.26M
JEPI icon
448
JPMorgan Equity Premium Income ETF
JEPI
$46.1B
$5.3M 0.02%
96,472
+19,389
+25% +$1.05M
YUM icon
449
Yum! Brands
YUM
$41B
$5.28M 0.02%
40,373
-1,924
-5% -$240K
SPHQ icon
450
Invesco S&P 500 Quality ETF
SPHQ
$19.9B
$5.24M 0.02%
96,921
+9,806
+11% +$504K
16 17
18
19 20

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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.