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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
IWD icon
151
iShares Russell 1000 Value ETF
IWD
$84B
$34M 0.12%
205,962
-3,163
-2% -$488K
CSCO icon
152
Cisco
CSCO
$488B
$33.8M 0.12%
669,550
-46,962
-7% -$2.4M
DVAX
153
DELISTED
Dynavax Technologies
DVAX
$33.7M 0.11%
2,409,215
-60,976
-2% -$847K
IEFA icon
154
iShares Core MSCI EAFE ETF
IEFA
$196B
$33.4M 0.11%
474,518
+24,353
+5% +$1.61M
AMGN icon
155
Amgen
AMGN
$225B
$32.8M 0.11%
113,731
-1,071
-0.9% -$292K
MDY icon
156
State Street SPDR S&P MIDCAP 400 ETF Trust
MDY
$27.2B
$32.5M 0.11%
64,109
-2,435
-4% -$1.13M
PFE icon
157
Pfizer
PFE
$150B
$31M 0.11%
1,077,638
-69,307
-6% -$2.1M
KVUE icon
158
Kenvue
KVUE
$36.5B
$30.5M 0.1%
1,414,552
+22,809
+2% +$457K
AMD icon
159
Advanced Micro Devices
AMD
$788B
$30.4M 0.1%
206,048
-1,915
-0.9% -$226K
ULTA icon
160
Ulta Beauty
ULTA
$22.9B
$30.1M 0.1%
61,515
-10
-0% -$4.22K
HEI icon
161
HEICO Corp
HEI
$52.1B
$29.8M 0.1%
166,340
-1,388
-0.8% -$235K
UPS icon
162
United Parcel Service
UPS
$88.4B
$29.7M 0.1%
188,596
-12,613
-6% -$1.91M
GLD icon
163
SPDR Gold Trust
GLD
$144B
$29.3M 0.1%
153,426
+3,782
+3% +$693K
SHOP icon
164
Shopify
SHOP
$194B
$28.9M 0.1%
370,379
-1,036
-0.3% -$66.2K
RSP icon
165
Invesco S&P 500 Equal Weight ETF
RSP
$99.5B
$28.6M 0.1%
181,246
+65,522
+57% +$9.52M
FTV icon
166
Fortive
FTV
$18.6B
$28.5M 0.1%
513,511
-10,612
-2% -$560K
CCOI icon
167
Cogent Communications
CCOI
$525M
$28.3M 0.1%
372,679
-5,930
-2% -$396K
BSV icon
168
Vanguard Short-Term Bond ETF
BSV
$45.6B
$28.2M 0.1%
365,999
-14,508
-4% -$1.1M
PODD icon
169
Insulet
PODD
$10.1B
$27.9M 0.1%
128,526
-31,650
-20% -$5.43M
DSGX icon
170
Descartes Systems
DSGX
$6.65B
$27.7M 0.09%
328,938
+11,050
+3% +$861K
EXAS
171
DELISTED
Exact Sciences
EXAS
$27.4M 0.09%
369,857
-8,272
-2% -$542K
DOCU
172
DocuSign
DOCU
$11.1B
$27M 0.09%
454,376
-211,903
-32% -$9.72M
PAYX icon
173
Paychex
PAYX
$42.8B
$26.9M 0.09%
226,126
-6,810
-3% -$807K
NEE icon
174
NextEra Energy
NEE
$179B
$26.2M 0.09%
431,557
-82,915
-16% -$4.73M
WEX icon
175
WEX
WEX
$6.48B
$26.2M 0.09%
134,450
-507
-0.4% -$91.9K
5 6
7
8 9

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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.