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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
+9.7%
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
$27.3B
AUM Growth
+$2.26B
Cap. Flow
+$202M
Cap. Flow %
0.74%
Top 10 Hldgs %
24.36%
Holding
1,897
New
97
Increased
682
Reduced
737
Closed
88

Top Buys

Rank Stock Value
1
COST icon
Costco
COST
+$28.3M
2
ALL icon
Allstate
ALL
+$25.8M
3
ISRG icon
Intuitive Surgical
ISRG
+$19.6M
4
NEOG icon
Neogen
NEOG
+$17.4M
5
DV icon
DoubleVerify
DV
+$17.3M

Top Sells

Rank Stock Value
1
NBIX icon
Neurocrine Biosciences
NBIX
+$29.1M
2
PLNT icon
Planet Fitness
PLNT
+$20.4M
3
ABNB icon
Airbnb
ABNB
+$17.1M
4
IBM icon
IBM
IBM
+$14.8M
5
XMTR icon
Xometry
XMTR
+$10.8M

Sector Composition

Rank Sector Weight
1 Technology 25.59%
2 Healthcare 18.44%
3 Industrials 11.64%
4 Financials 11.51%
5 Consumer Discretionary 8.51%
Name Market Value Portfolio Weight Shares or Principal Change
in Stake 		Capital Flow
FIW icon
1776
First Trust Water ETF
FIW
$1.93B
$811 ﹤0.01%
9
– –
HYEM icon
1777
VanEck Emerging Markets High Yield Bond ETF
HYEM
$527M
$796 ﹤0.01%
+43
New +$778
SLX icon
1778
VanEck Steel ETF
SLX
$176M
$768 ﹤0.01%
+12
New +$729
QQQH
1779
NEOS Nasdaq-100 Hedged Equity Income ETF
QQQH
$386M
$754 ﹤0.01%
+18
New +$731
RYLD icon
1780
Global X Russell 2000 Covered Call ETF
RYLD
$1.39B
$633 ﹤0.01%
35
-3,795
-99% -$68.4K
UPRO icon
1781
ProShares UltraPro S&P 500
UPRO
$5.76B
$440 ﹤0.01%
9
-9
-50% -$367
SPHY icon
1782
State Street SPDR Portfolio High Yield Bond ETF
SPHY
$12B
$437 ﹤0.01%
+19
New +$431
EBND icon
1783
State Street SPDR Bloomberg Emerging Markets Local Bond ETF
EBND
$2.28B
$402 ﹤0.01%
19
-3
-14% -$63
BLV icon
1784
Vanguard Long-Term Bond ETF
BLV
$5.7B
$375 ﹤0.01%
5
– –
BUZZ icon
1785
VanEck Social Sentiment ETF
BUZZ
$101M
$361 ﹤0.01%
22
– –
PSR icon
1786
Invesco Active US Real Estate Fund
PSR
$59M
$347 ﹤0.01%
4
– –
SPMB icon
1787
State Street SPDR Portfolio Mortgage Backed Bond ETF
SPMB
$7.05B
$264 ﹤0.01%
+12
New +$264
VIOG icon
1788
Vanguard S&P Small-Cap 600 Growth ETF
VIOG
$1.13B
$200 ﹤0.01%
2
-272
-99% -$25.6K
SRS icon
1789
ProShares UltraShort Real Estate
SRS
$16.2M
$85 ﹤0.01%
1
– –
TDW.WS.A
1790
DELISTED
Tidewater Inc. Series A Warrants to purchase shares of common stock (expiring July 31, 2023)
TDW.WS.A
$50 ﹤0.01%
+43
New +$26
TDW.WS.B
1791
DELISTED
Tidewater Inc. Series B Warrants to purchase shares of common stock (expiring July 31, 2023)
TDW.WS.B
$9 ﹤0.01%
+46
New +$11
ALGM icon
1792
Allegro MicroSystems
ALGM
$7.96B
– –
-4,970
Closed -$239K
EFOR
1793
Everforth Inc
EFOR
$1.34B
– –
-7,552
Closed -$624K
AXDX
1794
DELISTED
Accelerate Diagnostics
AXDX
– –
-4,588
Closed -$32.1K
BMAY icon
1795
Innovator US Equity Buffer ETF May
BMAY
$237M
– –
-1,205
Closed -$36.4K
CABO icon
1796
Cable One
CABO
$191M
– –
-300
Closed -$211K
CQP icon
1797
Cheniere Energy
CQP
$33B
– –
-4,334
Closed -$205K
DPST icon
1798
Direxion Daily Regional Banks Bull 3X ETF
DPST
$409M
– –
-300
Closed -$23.1K
EME icon
1799
Emcor
EME
$37.1B
– –
-1,336
Closed -$217K
EWD icon
1800
iShares MSCI Sweden ETF
EWD
$582M
– –
-97
Closed -$3.45K
70 71
72
73 74

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William Blair & Company's Q2 2023 Portfolio in Review

As of Q2 2023, William Blair & Company held 1,897 positions worth $27.3B, up 9% from $25B the previous quarter. Its ten largest holdings account for 24% of the portfolio.

William Blair & Company's Q2 2023 filing shows 97 new, 682 increased, 737 reduced and 88 closed positions. Its largest new stake was Innovator US Equity Power Buffer ETF April: 112,249 shares worth $3.47M. The largest sale was Neurocrine Biosciences, an estimated $29.1M.

By sector, the portfolio is most concentrated in Technology at 26% of assets, up from 25% a quarter earlier, followed by Healthcare and Industrials.

  • William Blair & Company's largest Q2 2023 buy was Innovator US Equity Power Buffer ETF April: 112,249 shares worth $3.47M.
  • William Blair & Company added most to Costco in Q2 2023, an estimated $28.3M increase.
  • William Blair & Company's biggest Q2 2023 reduction was Neurocrine Biosciences, cutting an estimated $29.1M.
  • William Blair & Company fully exited ABB Ltd in Q2 2023, selling an estimated $7.21M.
  • William Blair & Company's ten largest holdings make up 24% of its $27.3B portfolio in Q2 2023.
  • William Blair & Company opened 97 new positions and closed 88 in Q2 2023.
  • William Blair & Company's portfolio value rose 9% quarter-over-quarter to $27.3B.

Based on William Blair & Company's 13F filing for Q2 2023, filed 11 Aug 2023.