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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
+23.04%
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
$16.4B
AUM Growth
+$2.69B
Cap. Flow
+$306M
Cap. Flow %
1.86%
Top 10 Hldgs %
21%
Holding
1,770
New
129
Increased
754
Reduced
490
Closed
65

Top Buys

Rank Stock Value
1
FISV
Fiserv Inc
FISV
+$65.4M
2
P
Everpure Inc
P
+$35.3M
3
PYPL icon
PayPal
PYPL
+$30.4M
4
BA icon
Boeing
BA
+$28.3M
5
TWLO icon
Twilio
TWLO
+$24.2M

Top Sells

Rank Stock Value
1
TTE icon
TotalEnergies
TTE
+$155M
2
RHT
Red Hat Inc
RHT
+$73.4M
3
ULTI
Ultimate Software Group Inc
ULTI
+$70.6M
4
INGN icon
Inogen
INGN
+$25.8M
5
CELG
Celgene Corp
CELG
+$20.1M

Sector Composition

Rank Sector Weight
1 Technology 22.65%
2 Healthcare 17.38%
3 Financials 12.48%
4 Consumer Discretionary 9.87%
5 Industrials 9.37%
Name Market Value Portfolio Weight Shares or Principal Change
in Stake 		Capital Flow
ROKU icon
326
Roku
ROKU
$22.3B
$6.22M 0.04%
96,426
+13,848
+17% +$741K
ACIA
327
DELISTED
Acacia Communications Inc
ACIA
$6.06M 0.04%
105,598
-2,025
-2% -$96.8K
BFH icon
328
Bread Financial
BFH
$4.44B
$5.99M 0.04%
42,893
-4,772
-10% -$650K
XLF icon
329
State Street Financial Select Sector SPDR ETF
XLF
$58.4B
$5.99M 0.04%
232,780
-35,010
-13% -$904K
HEFA icon
330
iShares Currency Hedged MSCI EAFE ETF
HEFA
$7.64B
$5.98M 0.04%
207,111
-4,532
-2% -$126K
RCL icon
331
Royal Caribbean
RCL
$85.7B
$5.96M 0.04%
51,969
+6,329
+14% +$720K
RSP icon
332
Invesco S&P 500 Equal Weight ETF
RSP
$98.8B
$5.89M 0.04%
56,448
+4,570
+9% +$461K
AMJ
333
DELISTED
JP Morgan Alerian MLP Index ETN 5/24/24
AMJ
$5.86M 0.04%
229,693
-10,274
-4% -$257K
NSC icon
334
Norfolk Southern
NSC
$76.9B
$5.84M 0.04%
31,245
-243
-0.8% -$42K
NEO icon
335
NeoGenomics
NEO
$2B
$5.81M 0.04%
283,751
+7,399
+3% +$129K
FTNT icon
336
Fortinet
FTNT
$117B
$5.75M 0.04%
342,625
-47,845
-12% -$763K
LFUS icon
337
Littelfuse
LFUS
$11.7B
$5.74M 0.04%
31,475
-607
-2% -$112K
LMT icon
338
Lockheed Martin
LMT
$135B
$5.71M 0.03%
19,031
+4,580
+32% +$1.34M
SBNY
339
DELISTED
Signature Bank
SBNY
$5.71M 0.03%
44,586
-748
-2% -$95.2K
GLOB icon
340
Globant
GLOB
$1.61B
$5.66M 0.03%
79,318
+1,708
+2% +$115K
IWS icon
341
iShares Russell Mid-Cap Value ETF
IWS
$15.8B
$5.62M 0.03%
64,703
+11,500
+22% +$970K
III icon
342
Information Services Group
III
$239M
$5.61M 0.03%
1,505,219
+34,935
+2% +$144K
SNA icon
343
Snap-on
SNA
$21.5B
$5.61M 0.03%
35,831
+386
+1% +$61.3K
TROW icon
344
T. Rowe Price
TROW
$24.2B
$5.53M 0.03%
55,195
+11,429
+26% +$1.1M
PRAA icon
345
PRA Group
PRAA
$692M
$5.49M 0.03%
204,711
-114,875
-36% -$3.32M
IJR icon
346
iShares Core S&P Small-Cap ETF
IJR
$111B
$5.42M 0.03%
70,317
+13,533
+24% +$1.04M
BSV icon
347
Vanguard Short-Term Bond ETF
BSV
$44.6B
$5.37M 0.03%
67,501
+12,097
+22% +$955K
PAA icon
348
Plains All American Pipeline
PAA
$16.6B
$5.3M 0.03%
216,081
-11,416
-5% -$270K
TBF icon
349
ProShares Short 20+ Year Treasury ETF
TBF
$105M
$5.25M 0.03%
243,905
+1,995
+0.8% +$44.7K
URI icon
350
United Rentals
URI
$72.4B
$5.23M 0.03%
45,758
-9,875
-18% -$1.22M
12 13
14
15 16

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William Blair & Company's Q1 2019 Portfolio in Review

As of Q1 2019, William Blair & Company held 1,770 positions worth $16.4B, up 20% from $13.7B the previous quarter. Its ten largest holdings account for 21% of the portfolio.

William Blair & Company's Q1 2019 filing shows 129 new, 754 increased, 490 reduced and 65 closed positions. Its largest new stake was Western Midstream Partners: 147,267 shares worth $4.62M. The largest sale was TotalEnergies, an estimated $155M.

By sector, the portfolio is most concentrated in Technology at 23% of assets, up from 21% a quarter earlier, followed by Healthcare and Financials.

  • William Blair & Company's largest Q1 2019 buy was Western Midstream Partners: 147,267 shares worth $4.62M.
  • William Blair & Company added most to Fiserv Inc in Q1 2019, an estimated $65.4M increase.
  • William Blair & Company's biggest Q1 2019 reduction was TotalEnergies, cutting an estimated $155M.
  • William Blair & Company fully exited MB Financial Corp in Q1 2019, selling an estimated $7.72M.
  • William Blair & Company's ten largest holdings make up 21% of its $16.4B portfolio in Q1 2019.
  • William Blair & Company opened 129 new positions and closed 65 in Q1 2019.
  • William Blair & Company's portfolio value rose 20% quarter-over-quarter to $16.4B.

Based on William Blair & Company's 13F filing for Q1 2019, filed 14 May 2019.