We are live on ! Find out more
William Blair & Company

William Blair & Company Portfolio holdings

AUM $34.9B
1-Year Est. Return 18.88%
This Fund
S&P 500
This Quarter Est. Return
+9.1%
1 Year Est. Return
+18.88%
3 Year Est. Return
+73.84%
5 Year Est. Return
+90.13%
10 Year Est. Return
+563.35%
AUM
$19.5B
AUM Growth
+$2.1B
Cap. Flow
+$465M
Cap. Flow %
2.39%
Top 10 Hldgs %
22.3%
Holding
1,847
New
125
Increased
679
Reduced
598
Closed
120

Top Buys

Rank Stock Value
1
ANET icon
Arista Networks
ANET
+$24M
2
DIS icon
Walt Disney
DIS
+$22.5M
3
PYPL icon
PayPal
PYPL
+$21.1M
4
AXP icon
American Express
AXP
+$18.6M
5
NOW icon
ServiceNow
NOW
+$15.5M

Top Sells

Rank Stock Value
1
CELG
Celgene Corp
CELG
+$25M
2
ULTA icon
Ulta Beauty
ULTA
+$21.8M
3
EOG icon
EOG Resources
EOG
+$20.9M
4
ABMD
Abiomed Inc
ABMD
+$16.3M
5
GRUB
Just Eat Takeaway.com N.V. American Depositary Shares
GRUB
+$11.2M

Sector Composition

Rank Sector Weight
1 Technology 23.46%
2 Healthcare 17.35%
3 Financials 13.04%
4 Consumer Discretionary 9.94%
5 Industrials 9.53%
Name Market Value Portfolio Weight Shares or Principal Change
in Stake 		Capital Flow
HYG icon
451
iShares iBoxx $ High Yield Corporate Bond ETF
HYG
$16.6B
$3.81M 0.02%
43,315
-1,277
-3% -$111K
PSXP
452
DELISTED
PHILLIPS 66 PARTNERS LP
PSXP
$3.8M 0.02%
61,652
-218
-0.4% -$12.3K
URI icon
453
United Rentals
URI
$72.4B
$3.79M 0.02%
22,707
+411
+2% +$59.7K
VPL icon
454
Vanguard FTSE Pacific ETF
VPL
$8.32B
$3.78M 0.02%
54,364
-1,421
-3% -$97.4K
MKTX icon
455
MarketAxess Holdings
MKTX
$5.72B
$3.78M 0.02%
9,970
+8,393
+532% +$3.08M
STZ icon
456
Constellation Brands
STZ
$22.6B
$3.75M 0.02%
19,765
-5,868
-23% -$1.11M
GRUB
457
DELISTED
Just Eat Takeaway.com N.V. American Depositary Shares
GRUB
$3.69M 0.02%
37,947
-122,820
-76% -$11.2M
BBY icon
458
Best Buy
BBY
$16.9B
$3.69M 0.02%
42,012
-570
-1% -$43.6K
SRPT icon
459
Sarepta Therapeutics
SRPT
$1.77B
$3.69M 0.02%
28,586
+1,790
+7% +$181K
SPCE icon
460
Virgin Galactic
SPCE
$377M
$3.66M 0.02%
15,829
-695
-4% -$136K
AVGO icon
461
Broadcom
AVGO
$2T
$3.65M 0.02%
115,620
+36,990
+47% +$1.12M
PNC icon
462
PNC Financial Services
PNC
$101B
$3.65M 0.02%
22,866
-3,573
-14% -$536K
CARG icon
463
CarGurus
CARG
$3.28B
$3.65M 0.02%
103,689
+3,381
+3% +$120K
EHC icon
464
Encompass Health
EHC
$12.4B
$3.63M 0.02%
65,903
+18,916
+40% +$1.03M
VRRM icon
465
Verra Mobility
VRRM
$778M
$3.62M 0.02%
258,669
+586
+0.2% +$8.41K
SSTI icon
466
SoundThinking
SSTI
$101M
$3.62M 0.02%
141,856
-46,625
-25% -$1.04M
RNG icon
467
RingCentral
RNG
$5.18B
$3.62M 0.02%
21,440
+821
+4% +$135K
TWO
468
Two Harbors Investment
TWO
$1.26B
$3.6M 0.02%
61,634
+15,520
+34% +$880K
SDC
469
DELISTED
SmileDirectClub, Inc. Class A Common Stock
SDC
$3.6M 0.02%
411,384
+382,054
+1,303% +$3.82M
VLO icon
470
Valero Energy
VLO
$87.2B
$3.57M 0.02%
38,082
-4,733
-11% -$447K
CLR
471
DELISTED
CONTINENTAL RESOURCES INC.
CLR
$3.56M 0.02%
103,888
-100
-0.1% -$3.1K
FSLR icon
472
First Solar
FSLR
$26.2B
$3.55M 0.02%
63,453
-20,721
-25% -$1.14M
SCHB icon
473
Schwab US Broad Market ETF
SCHB
$44.5B
$3.53M 0.02%
275,628
+17,952
+7% +$220K
KRYS icon
474
Krystal Biotech
KRYS
$9.55B
$3.53M 0.02%
63,754
+5,263
+9% +$258K
BIIB icon
475
Biogen
BIIB
$30.5B
$3.53M 0.02%
+11,891
New +$3.3M
17 18
19
20 21

Similar funds

SAM
Storebrand Asset Management Lysaker, Norway $34.8B AUM 25.49% 1-Year Est. Return
Chevy Chase Trust
Chevy Chase Trust Bethesda, Maryland $34.7B AUM 29.45% 1-Year Est. Return
VIA
Vanguard Investments Australia Victoria, Australia $34.6B AUM
Alyeska Investment Group
Alyeska Investment Group Chicago, Illinois $35.4B AUM 33.54% 1-Year Est. Return
Pacer Advisors
Pacer Advisors Malvern, Pennsylvania $35.6B AUM 18.19% 1-Year Est. Return
Kayne Anderson Rudnick Investment Management
Kayne Anderson Rudnick Investment Management Los Angeles, California $34B AUM 6.31% 1-Year Est. Return
Viking Global Investors
Viking Global Investors Stamford, Connecticut $35.7B AUM 21.3% 1-Year Est. Return
MML Investors Services
MML Investors Services Springfield, Massachusetts $36.1B AUM 19.68% 1-Year Est. Return

William Blair & Company's Q4 2019 Portfolio in Review

As of Q4 2019, William Blair & Company held 1,847 positions worth $19.5B, up 12% from $17.4B the previous quarter. Its ten largest holdings account for 22% of the portfolio.

William Blair & Company's Q4 2019 filing shows 125 new, 679 increased, 598 reduced and 120 closed positions. Its largest new stake was Dynatrace: 165,602 shares worth $4.19M. The largest sale was Celgene Corp, an estimated $25M.

By sector, the portfolio is most concentrated in Technology at 23% of assets, up from 23% a quarter earlier, followed by Healthcare and Financials.

  • William Blair & Company's largest Q4 2019 buy was Dynatrace: 165,602 shares worth $4.19M.
  • William Blair & Company added most to Arista Networks in Q4 2019, an estimated $24M increase.
  • William Blair & Company's biggest Q4 2019 reduction was Ulta Beauty, cutting an estimated $21.8M.
  • William Blair & Company fully exited Celgene Corp in Q4 2019, selling an estimated $25M.
  • William Blair & Company's ten largest holdings make up 22% of its $19.5B portfolio in Q4 2019.
  • William Blair & Company opened 125 new positions and closed 120 in Q4 2019.
  • William Blair & Company's portfolio value rose 12% quarter-over-quarter to $19.5B.

Based on William Blair & Company's 13F filing for Q4 2019, filed 13 Feb 2020.