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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
IWX icon
1301
iShares Russell Top 200 Value ETF
IWX
$3.91B
$400K ﹤0.01%
3,808
– –
ICSH icon
1302
iShares Ultra Short Duration Bond Active ETF
ICSH
$8.83B
$400K ﹤0.01%
7,909
-33
-0.4% -$1.67K
DLTR icon
1303
Dollar Tree
DLTR
$21.2B
$398K ﹤0.01%
3,293
+769
+30% +$79.9K
PFG icon
1304
Principal Financial Group
PFG
$25.3B
$398K ﹤0.01%
3,692
+444
+14% +$45.1K
INCY icon
1305
Incyte
INCY
$24.7B
$398K ﹤0.01%
3,507
+42
+1% +$4.17K
VFC icon
1306
VF Corp
VFC
$5B
$396K ﹤0.01%
23,739
+6,046
+34% +$108K
KRT icon
1307
Karat Packaging
KRT
$986M
$396K ﹤0.01%
+11,826
New +$340K
AGNC icon
1308
AGNC Investment
AGNC
$11.8B
$395K ﹤0.01%
36,245
-4,083
-10% -$43K
IFF icon
1309
International Flavors & Fragrances
IFF
$21.5B
$395K ﹤0.01%
4,980
+95
+2% +$7.07K
PECO icon
1310
Phillips Edison & Co
PECO
$4.89B
$393K ﹤0.01%
9,444
-6,959
-42% -$278K
HUBS icon
1311
HubSpot
HUBS
$12.1B
$390K ﹤0.01%
+2,135
New +$446K
AOA icon
1312
iShares Core 80/20 Aggressive Allocation ETF
AOA
$3.24B
$384K ﹤0.01%
3,939
+37
+0.9% +$3.53K
BHC icon
1313
Bausch Health
BHC
$2.12B
$384K ﹤0.01%
77,982
– –
BBIO icon
1314
BridgeBio Pharma
BBIO
$13.4B
$383K ﹤0.01%
5,141
+2,123
+70% +$149K
APPN icon
1315
Appian
APPN
$2.72B
$382K ﹤0.01%
16,685
+1,736
+12% +$38.6K
TILT icon
1316
Northern Trust Morningstar US Market Factor Tilt ETF
TILT
$2.21B
$382K ﹤0.01%
1,384
-2
-0.1% -$532
AVUV icon
1317
Avantis US Small Cap Value ETF
AVUV
$31.2B
$381K ﹤0.01%
+3,057
New +$365K
EEFT icon
1318
Euronet Worldwide
EEFT
$2.62B
$379K ﹤0.01%
5,181
+131
+3% +$9.14K
CVLT icon
1319
Commault Systems
CVLT
$5.94B
$378K ﹤0.01%
+2,670
New +$287K
STTK icon
1320
Shattuck Labs
STTK
$599M
$378K ﹤0.01%
+54,471
New +$340K
EPAC icon
1321
Enerpac Tool Group
EPAC
$1.77B
$378K ﹤0.01%
10,540
+343
+3% +$12K
FBIN icon
1322
Fortune Brands Innovations
FBIN
$4.77B
$377K ﹤0.01%
6,873
+41
+0.6% +$1.64K
SF
1323
Stifel
SF
$11.6B
$376K ﹤0.01%
5,393
-3,524
-40% -$263K
STAG icon
1324
STAG Industrial
STAG
$7.16B
$376K ﹤0.01%
9,884
+588
+6% +$22.5K
LEG
1325
DELISTED
Leggett & Platt
LEG
$376K ﹤0.01%
32,110
-327
-1% -$3.45K
51 52
53
54 55

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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.