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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
HAL icon
301
Halliburton
HAL
$27.7B
$10.9M 0.04%
301,586
+27,752
+10% +$1.07M
NOC icon
302
Northrop Grumman
NOC
$82B
$10.9M 0.04%
23,273
+134
+0.6% +$62.8K
NSC icon
303
Norfolk Southern
NSC
$75.3B
$10.9M 0.04%
46,028
+2,101
+5% +$440K
IRT icon
304
Independence Realty Trust
IRT
$3.96B
$10.9M 0.04%
711,039
+8,644
+1% +$120K
DAY
305
DELISTED
Dayforce
DAY
$10.8M 0.04%
161,204
-22,268
-12% -$1.52M
MDT icon
306
Medtronic
MDT
$116B
$10.8M 0.04%
131,314
-2,309
-2% -$176K
CBOE icon
307
Cboe Global Markets
CBOE
$30.4B
$10.8M 0.04%
60,318
-1,309
-2% -$224K
KMI icon
308
Kinder Morgan
KMI
$70.7B
$10.8M 0.04%
610,073
-11,830
-2% -$202K
TRMB icon
309
Trimble
TRMB
$13.1B
$10.7M 0.04%
201,373
-130,338
-39% -$6.22M
IAU icon
310
iShares Gold Trust
IAU
$65.4B
$10.7M 0.04%
273,878
+9,352
+4% +$350K
VXF icon
311
Vanguard Extended Market ETF
VXF
$32.1B
$10.6M 0.04%
64,706
-2,909
-4% -$428K
OPRX icon
312
OptimizeRx
OPRX
$132M
$10.6M 0.04%
741,104
-95,394
-11% -$915K
FVD icon
313
First Trust Value Line Dividend Fund
FVD
$8.36B
$10.5M 0.04%
260,039
-3,467
-1% -$133K
SDY icon
314
State Street SPDR S&P Dividend ETF
SDY
$22.1B
$10.3M 0.04%
82,518
-8,880
-10% -$1.04M
VBR icon
315
Vanguard Morningstar Small-Cap Value ETF
VBR
$38.1B
$10.2M 0.03%
56,932
+1,443
+3% +$236K
OKTA icon
316
Okta
OKTA
$25.6B
$10.2M 0.03%
112,528
-46,094
-29% -$3.52M
WM icon
317
Waste Management
WM
$90.5B
$10.2M 0.03%
56,813
+1,042
+2% +$175K
OKE icon
318
Oneok
OKE
$58.3B
$10.2M 0.03%
144,805
-13,962
-9% -$936K
IVW icon
319
iShares S&P 500 Growth ETF
IVW
$77.3B
$10.1M 0.03%
134,270
+186
+0.1% +$13.2K
DLB icon
320
Dolby
DLB
$5.75B
$10.1M 0.03%
116,863
+203
+0.2% +$17.1K
MCK icon
321
McKesson
MCK
$102B
$9.9M 0.03%
21,373
-17
-0.1% -$7.73K
FSV icon
322
FirstService
FSV
$6.24B
$9.87M 0.03%
60,868
+5,268
+9% +$796K
GDX icon
323
VanEck Gold Miners ETF
GDX
$27.8B
$9.77M 0.03%
315,079
+8,533
+3% +$250K
SMH icon
324
VanEck Semiconductor ETF
SMH
$72B
$9.74M 0.03%
55,680
+41
+0.1% +$6.42K
VB icon
325
Vanguard Morningstar Small-Cap ETF
VB
$83B
$9.72M 0.03%
45,561
+2,862
+7% +$551K
11 12
13
14 15

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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.