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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
+19.08%
1 Year Est. Return
+25.71%
3 Year Est. Return
+88.7%
5 Year Est. Return
+104.53%
10 Year Est. Return
+606.62%
AUM
$38.4B
AUM Growth
+$3.49B
Cap. Flow
-$792M
Cap. Flow %
-2.06%
Top 10 Hldgs %
26.32%
Holding
2,083
New
163
Increased
891
Reduced
708
Closed
85

Top Buys

Rank Stock Value
1
HONA
Honeywell Aerospace
HONA
+$100M
2
ANET icon
Arista Networks
ANET
+$71.2M
3
RSP icon
Invesco S&P 500 Equal Weight ETF
RSP
+$61.8M
4
VTI icon
Vanguard Morningstar Total Stock Market ETF
VTI
+$55.8M
5
MIAX
Miami International Holdings
MIAX
+$49.4M

Top Sells

Rank Stock Value
1
XOM icon
ExxonMobil
XOM
+$161M
2
CPRT icon
Copart
CPRT
+$62M
3
DHR icon
Danaher
DHR
+$59.1M
4
AAPL icon
Apple
AAPL
+$57M
5
VEEV icon
Veeva Systems
VEEV
+$52.2M

Sector Composition

Rank Sector Weight
1 Technology 24.38%
2 Miscellaneous 18.67%
3 Industrials 15.24%
4 Financials 11.07%
5 Healthcare 9.11%
Name Market Value Portfolio Weight Shares or Principal Change
in Stake 		Capital Flow
LTPZ icon
1726
PIMCO 15+ Year US TIPS Index Exchange-Traded Fund
LTPZ
$874M
$70.3K ﹤0.01%
+1,388
New +$71K
ISCG icon
1727
iShares Morningstar Small-Cap Growth ETF
ISCG
$959M
$69.6K ﹤0.01%
1,062
– –
DGRS icon
1728
WisdomTree Trust WisdomTree US SmallCap Quality Dividend Growth Fund
DGRS
$395M
$69.4K ﹤0.01%
1,170
– –
CDXS icon
1729
Codexis
CDXS
$160M
$68.3K ﹤0.01%
30,219
+201
+0.7% +$500
AIVI icon
1730
WisdomTree International AI Enhanced Value Fund
AIVI
$62.6M
$68.1K ﹤0.01%
1,210
– –
BATRK icon
1731
Atlanta Braves Holdings Series B
BATRK
$3.28B
$68K ﹤0.01%
1,310
+147
+13% +$7.21K
NUS icon
1732
Nu Skin
NUS
$233M
$67.8K ﹤0.01%
12,849
-2,666
-17% -$17K
BAB icon
1733
Invesco Taxable Municipal Bond ETF
BAB
$876M
$67.2K ﹤0.01%
2,505
– –
VTWG icon
1734
Vanguard Russell 2000 Growth ETF
VTWG
$1.44B
$66.5K ﹤0.01%
231
+96
+71% +$25.6K
PTON icon
1735
Peloton Interactive
PTON
$2.14B
$66.4K ﹤0.01%
+11,238
New +$60.6K
ITEQ icon
1736
Amplify BlueStar Israel Technology ETF
ITEQ
$108M
$66.4K ﹤0.01%
1,000
– –
UA icon
1737
Under Armour Class C
UA
$2.1B
$65.8K ﹤0.01%
10,578
-1,089
-9% -$6.27K
FV icon
1738
First Trust Dorsey Wright Focus 5 ETF
FV
$3.73B
$65.2K ﹤0.01%
859
+1
+0.1% +$69
BRSP
1739
BrightSpire Capital
BRSP
$559M
$64.7K ﹤0.01%
+11,879
New +$68.1K
NURE icon
1740
Nuveen Short-Term REIT ETF
NURE
$33.6M
$64.7K ﹤0.01%
2,000
– –
PWV icon
1741
Invesco Large Cap Value ETF
PWV
$1.9B
$64.4K ﹤0.01%
850
– –
FSMD icon
1742
Fidelity Small-Mid Multifactor ETF
FSMD
$2.51B
$64.2K ﹤0.01%
1,214
+204
+20% +$10.1K
VCEB icon
1743
Vanguard ESG US Corporate Bond ETF
VCEB
$1.19B
$64.1K ﹤0.01%
1,021
-161
-14% -$10.1K
SJNK icon
1744
State Street SPDR Bloomberg Short Term High Yield Bond ETF
SJNK
$4.71B
$64K ﹤0.01%
2,557
-283
-10% -$7.09K
SFIX
1745
Stitch Fix
SFIX
$390M
$63.2K ﹤0.01%
15,376
+1,865
+14% +$6.78K
NVST icon
1746
Envista
NVST
$4B
$61.9K ﹤0.01%
+2,348
New +$59.2K
TQQQ icon
1747
ProShares UltraPro QQQ
TQQQ
$34.1B
$61.9K ﹤0.01%
764
+554
+264% +$38.5K
SLVP icon
1748
iShares MSCI Global Silver and Metals Miners ETF
SLVP
$932M
$61.7K ﹤0.01%
2,000
-115
-5% -$4.1K
LIT icon
1749
Global X Lithium & Battery Tech ETF
LIT
$1.47B
$61.6K ﹤0.01%
787
– –
CSD icon
1750
Invesco S&P Spin-Off ETF
CSD
$214M
$61.4K ﹤0.01%
410
– –
68 69
70
71 72

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TWC
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William Blair & Company's Q2 2026 Portfolio in Review

As of Q2 2026, William Blair & Company held 2,083 positions worth $38.4B, up 10% from $34.9B the previous quarter. Its ten largest holdings account for 26% of the portfolio.

William Blair & Company's Q2 2026 filing shows 163 new, 891 increased, 708 reduced and 85 closed positions. Its largest new stake was Honeywell Aerospace: 454,071 shares worth $100M. The largest sale was ExxonMobil, an estimated $161M.

By sector, the portfolio is most concentrated in Technology at 24% of assets, up from 22% a quarter earlier, followed by Miscellaneous and Industrials.

  • William Blair & Company's largest Q2 2026 buy was Honeywell Aerospace: 454,071 shares worth $100M.
  • William Blair & Company added most to Arista Networks in Q2 2026, an estimated $71.2M increase.
  • William Blair & Company's biggest Q2 2026 reduction was Copart, cutting an estimated $62M.
  • William Blair & Company fully exited ExxonMobil in Q2 2026, selling an estimated $161M.
  • William Blair & Company's ten largest holdings make up 26% of its $38.4B portfolio in Q2 2026.
  • William Blair & Company opened 163 new positions and closed 85 in Q2 2026.
  • William Blair & Company's portfolio value rose 10% quarter-over-quarter to $38.4B.

Based on William Blair & Company's 13F filing for Q2 2026, filed 11 Aug 2026.