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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
SKYY icon
1451
First Trust Cloud Computing ETF
SKYY
$3.38B
$278K ﹤0.01%
2,064
– –
PBE icon
1452
Invesco Biotechnology & Genome ETF
PBE
$407M
$278K ﹤0.01%
3,097
+2,097
+210% +$173K
BIPC icon
1453
Brookfield Infrastructure
BIPC
$4.37B
$277K ﹤0.01%
7,200
-32
-0.4% -$1.29K
SSD icon
1454
Simpson Manufacturing
SSD
$7.08B
$277K ﹤0.01%
1,323
-125
-9% -$23.4K
AIVL icon
1455
WisdomTree US AI Enhanced Value Fund
AIVL
$419M
$276K ﹤0.01%
2,103
– –
USFD icon
1456
US Foods
USFD
$19.7B
$274K ﹤0.01%
2,684
-96
-3% -$8.56K
DLS icon
1457
WisdomTree International SmallCap Dividend Fund
DLS
$1.07B
$272K ﹤0.01%
3,251
+3
+0.1% +$258
NWSA icon
1458
News Corp Class A
NWSA
$16.3B
$272K ﹤0.01%
+10,967
New +$284K
XSMO icon
1459
Invesco S&P SmallCap Momentum ETF
XSMO
$2.88B
$272K ﹤0.01%
2,907
+55
+2% +$4.74K
CHYM
1460
Chime Financial
CHYM
$12.5B
$272K ﹤0.01%
13,259
+2,570
+24% +$49.9K
FBNC icon
1461
First Bancorp
FBNC
$2.66B
$270K ﹤0.01%
4,229
+123
+3% +$7.28K
PNW icon
1462
Pinnacle West Capital
PNW
$11.5B
$268K ﹤0.01%
2,506
+538
+27% +$55K
VMD icon
1463
Viemed Healthcare
VMD
$333M
$268K ﹤0.01%
23,503
+480
+2% +$4.75K
DPZ icon
1464
Domino's
DPZ
$10.3B
$267K ﹤0.01%
+902
New +$297K
CQP icon
1465
Cheniere Energy
CQP
$31.9B
$267K ﹤0.01%
4,377
-312
-7% -$19.6K
TDIV icon
1466
First Trust NASDAQ Technology Dividend Index Fund
TDIV
$4.39B
$267K ﹤0.01%
2,321
+146
+7% +$16.2K
KDP icon
1467
Keurig Dr Pepper
KDP
$42.7B
$266K ﹤0.01%
8,138
+114
+1% +$3.32K
PDSB icon
1468
PDS Biotechnology
PDSB
$32.5M
$264K ﹤0.01%
300,000
– –
KIE icon
1469
State Street SPDR S&P Insurance ETF
KIE
$678M
$264K ﹤0.01%
4,329
– –
DBA icon
1470
Invesco DB Agriculture Fund
DBA
$1.25B
$264K ﹤0.01%
9,891
-350
-3% -$9.54K
BOH icon
1471
Bank of Hawaii
BOH
$2.98B
$263K ﹤0.01%
+3,231
New +$253K
ITB icon
1472
iShares US Home Construction ETF
ITB
$2.14B
$262K ﹤0.01%
2,510
-610
-20% -$57.9K
NFG icon
1473
National Fuel Gas
NFG
$7.76B
$261K ﹤0.01%
3,379
+755
+29% +$62.5K
TDY icon
1474
Teledyne Technologies
TDY
$27.6B
$261K ﹤0.01%
391
+47
+14% +$29.6K
WSFS icon
1475
WSFS Financial
WSFS
$4.11B
$261K ﹤0.01%
+3,396
New +$243K
57 58
59
60 61

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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.