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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
+12.53%
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
$23.6B
AUM Growth
+$2.6B
Cap. Flow
+$316M
Cap. Flow %
1.34%
Top 10 Hldgs %
26.84%
Holding
1,800
New
126
Increased
679
Reduced
652
Closed
80

Top Buys

Rank Stock Value
1
QDEL icon
QuidelOrtho
QDEL
+$40.3M
2
TDOC icon
Teladoc Health
TDOC
+$32.5M
3
CTAS icon
Cintas
CTAS
+$25.5M
4
ECL icon
Ecolab
ECL
+$25.4M
5
FTV icon
Fortive
FTV
+$24M

Top Sells

Rank Stock Value
1
GS icon
Goldman Sachs
GS
+$46.7M
2
GWRE icon
Guidewire Software
GWRE
+$38.9M
3
ANET icon
Arista Networks
ANET
+$31.4M
4
V icon
Visa
V
+$25.9M
5
PFNX
Pfenex Inc.
PFNX
+$25.4M

Sector Composition

Rank Sector Weight
1 Technology 27.37%
2 Healthcare 19.68%
3 Financials 10.88%
4 Consumer Discretionary 10.56%
5 Industrials 8.4%
Name Market Value Portfolio Weight Shares or Principal Change
in Stake 		Capital Flow
SPGI icon
401
S&P Global
SPGI
$121B
$4.96M 0.02%
13,751
+212
+2% +$74.8K
D icon
402
Dominion Energy
D
$59.8B
$4.94M 0.02%
62,623
-601
-1% -$47.2K
IWS icon
403
iShares Russell Mid-Cap Value ETF
IWS
$16B
$4.94M 0.02%
61,107
-4,046
-6% -$328K
NTNX icon
404
Nutanix
NTNX
$17.5B
$4.94M 0.02%
222,552
-28,334
-11% -$648K
CDLX icon
405
Cardlytics
CDLX
$24.7M
$4.93M 0.02%
6,986
-18
-0.3% -$13.1K
CNNE icon
406
Cannae Holdings
CNNE
$651M
$4.87M 0.02%
130,602
-50
-0% -$1.9K
WEC icon
407
WEC Energy
WEC
$35.6B
$4.86M 0.02%
50,158
-2,093
-4% -$195K
PFPT
408
DELISTED
Proofpoint, Inc.
PFPT
$4.82M 0.02%
45,622
+7,842
+21% +$874K
TRIL
409
DELISTED
Trillium Therapeutics Inc.
TRIL
$4.81M 0.02%
338,770
+104,215
+44% +$1.04M
WFC icon
410
Wells Fargo
WFC
$269B
$4.72M 0.02%
200,891
+60,889
+43% +$1.5M
MS icon
411
Morgan Stanley
MS
$342B
$4.7M 0.02%
97,285
+8,190
+9% +$413K
LFUS icon
412
Littelfuse
LFUS
$11.7B
$4.68M 0.02%
26,409
-1,820
-6% -$323K
FITB
413
Fifth Third Bancorp
FITB
$52.6B
$4.65M 0.02%
218,290
-21,837
-9% -$440K
AMED
414
DELISTED
Amedisys
AMED
$4.65M 0.02%
19,677
+1,138
+6% +$259K
PHO icon
415
Invesco Water Resources ETF
PHO
$2.06B
$4.62M 0.02%
116,326
-4,348
-4% -$170K
BBY icon
416
Best Buy
BBY
$17.5B
$4.59M 0.02%
41,215
-998
-2% -$102K
DFS
417
DELISTED
Discover Financial Services
DFS
$4.57M 0.02%
79,068
+23,986
+44% +$1.26M
NKTR icon
418
Nektar Therapeutics
NKTR
$2.57B
$4.56M 0.02%
18,328
+882
+5% +$277K
SO icon
419
Southern Company
SO
$106B
$4.55M 0.02%
83,845
+10,771
+15% +$576K
ETN icon
420
Eaton
ETN
$179B
$4.54M 0.02%
44,459
-4,004
-8% -$391K
HMSY
421
DELISTED
HMS Holdings Corp.
HMSY
$4.49M 0.02%
187,432
+2,177
+1% +$64K
STZ icon
422
Constellation Brands
STZ
$22.9B
$4.48M 0.02%
23,652
+4,068
+21% +$742K
VTIP icon
423
Vanguard Short-Term Inflation-Protected Securities Index Fund
VTIP
$19.8B
$4.43M 0.02%
86,874
+1,613
+2% +$81.8K
BR icon
424
Broadridge
BR
$19.3B
$4.36M 0.02%
33,063
+4,605
+16% +$616K
VFC icon
425
VF Corp
VFC
$5.73B
$4.36M 0.02%
62,039
+2,811
+5% +$182K
15 16
17
18 19

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William Blair & Company's Q3 2020 Portfolio in Review

As of Q3 2020, William Blair & Company held 1,800 positions worth $23.6B, up 12% from $21B the previous quarter. Its ten largest holdings account for 27% of the portfolio.

William Blair & Company's Q3 2020 filing shows 126 new, 679 increased, 652 reduced and 80 closed positions. Its largest new stake was Unity: 72,858 shares worth $6.36M. The largest sale was Goldman Sachs, an estimated $46.7M.

By sector, the portfolio is most concentrated in Technology at 27% of assets, down from 27% a quarter earlier, followed by Healthcare and Financials.

  • William Blair & Company's largest Q3 2020 buy was Unity: 72,858 shares worth $6.36M.
  • William Blair & Company added most to QuidelOrtho in Q3 2020, an estimated $40.3M increase.
  • William Blair & Company's biggest Q3 2020 reduction was Goldman Sachs, cutting an estimated $46.7M.
  • William Blair & Company fully exited Pfenex Inc. in Q3 2020, selling an estimated $25.4M.
  • William Blair & Company's ten largest holdings make up 27% of its $23.6B portfolio in Q3 2020.
  • William Blair & Company opened 126 new positions and closed 80 in Q3 2020.
  • William Blair & Company's portfolio value rose 12% quarter-over-quarter to $23.6B.

Based on William Blair & Company's 13F filing for Q3 2020, filed 6 Nov 2020.