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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
FIS icon
276
Fidelity National Information Services
FIS
$21.6B
$12.8M 0.04%
213,069
-29,674
-12% -$1.63M
VZ icon
277
Verizon
VZ
$195B
$12.7M 0.04%
338,162
-74,676
-18% -$2.64M
FTNT icon
278
Fortinet
FTNT
$118B
$12.7M 0.04%
216,900
-232,090
-52% -$12.8M
TMDX icon
279
Transmedics
TMDX
$3.02B
$12.6M 0.04%
159,107
+152,563
+2,331% +$9.2M
TENB icon
280
Tenable Holdings
TENB
$4.08B
$12.4M 0.04%
270,126
-39,728
-13% -$1.67M
SHW icon
281
Sherwin-Williams
SHW
$87.4B
$12.4M 0.04%
39,678
-522
-1% -$140K
WCN
282
Waste Connections
WCN
$41.6B
$12.2M 0.04%
82,012
+3,884
+5% +$533K
PHR icon
283
Phreesia
PHR
$758M
$12.2M 0.04%
527,750
+49,336
+10% +$851K
AGG icon
284
iShares Core US Aggregate Bond ETF
AGG
$138B
$12.2M 0.04%
122,442
-3,172
-3% -$302K
FERG icon
285
Ferguson
FERG
$47.4B
$12M 0.04%
62,289
+11,572
+23% +$1.95M
DOV icon
286
Dover
DOV
$28B
$11.7M 0.04%
76,299
-1,112
-1% -$156K
GDYN icon
287
Grid Dynamics Holdings
GDYN
$632M
$11.7M 0.04%
880,186
-24,358
-3% -$297K
CW icon
288
Curtiss-Wright
CW
$26.7B
$11.7M 0.04%
52,401
+7,536
+17% +$1.58M
BDX icon
289
Becton Dickinson
BDX
$50B
$11.5M 0.04%
47,089
-6,576
-12% -$1.62M
BLBD icon
290
Blue Bird Corp
BLBD
$2.04B
$11.5M 0.04%
424,769
-20,590
-5% -$424K
PH icon
291
Parker-Hannifin
PH
$135B
$11.4M 0.04%
24,829
-3,214
-11% -$1.34M
BJ icon
292
BJs Wholesale Club
BJ
$11.8B
$11.4M 0.04%
170,688
-47,151
-22% -$3.19M
DFS
293
DELISTED
Discover Financial Services
DFS
$11.4M 0.04%
101,182
-587
-0.6% -$54.3K
MCO icon
294
Moody's
MCO
$82.8B
$11.3M 0.04%
29,045
-119
-0.4% -$41.4K
QNST icon
295
QuinStreet
QNST
$1.19B
$11.3M 0.04%
883,949
-5,910
-0.7% -$66.6K
IWR icon
296
iShares Russell Mid-Cap ETF
IWR
$57.9B
$11.2M 0.04%
143,986
+10,874
+8% +$772K
EL icon
297
Estee Lauder
EL
$31.7B
$11.2M 0.04%
76,444
-9,007
-11% -$1.2M
OMC icon
298
Omnicom Group
OMC
$23.5B
$11.2M 0.04%
129,033
-103,245
-44% -$8.14M
APPF icon
299
AppFolio
APPF
$6.97B
$11.1M 0.04%
64,211
-1,027
-2% -$192K
ASML icon
300
ASML
ASML
$695B
$11M 0.04%
14,522
+746
+5% +$493K
10 11
12
13 14

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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.