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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
MXL icon
276
MaxLinear
MXL
$6.37B
$8.8M 0.05%
344,722
+603
+0.2% +$13.2K
SSTI icon
277
SoundThinking
SSTI
$101M
$8.77M 0.05%
227,289
+188,139
+481% +$8.08M
SIX
278
DELISTED
Six Flags Entertainment Corp.
SIX
$8.77M 0.05%
177,634
-122,393
-41% -$6.92M
XLNX
279
DELISTED
Xilinx Inc
XLNX
$8.47M 0.05%
66,843
-16,548
-20% -$1.86M
PLAY icon
280
Dave & Buster's
PLAY
$351M
$8.46M 0.05%
169,712
-166,739
-50% -$8.18M
SHOP icon
281
Shopify
SHOP
$191B
$8.31M 0.05%
402,190
+15,370
+4% +$271K
HCSG icon
282
Healthcare Services Group
HCSG
$1.51B
$8.29M 0.05%
251,400
+9,625
+4% +$369K
PVTL
283
DELISTED
Pivotal Software, Inc.
PVTL
$8.22M 0.05%
394,474
+117,366
+42% +$2.29M
USMV icon
284
iShares MSCI USA Min Vol Factor ETF
USMV
$24.1B
$8.18M 0.05%
139,171
+7,461
+6% +$418K
TWTR
285
DELISTED
Twitter, Inc.
TWTR
$8.15M 0.05%
248,033
-3,812
-2% -$121K
AIRG icon
286
Airgain
AIRG
$72.3M
$8.05M 0.05%
627,717
+13,505
+2% +$159K
APPF icon
287
AppFolio
APPF
$6.87B
$7.93M 0.05%
99,936
+1,295
+1% +$86.6K
VXF icon
288
Vanguard Extended Market ETF
VXF
$31.2B
$7.88M 0.05%
68,290
+9,249
+16% +$1.04M
EQIX icon
289
Equinix
EQIX
$104B
$7.88M 0.05%
17,388
+1,167
+7% +$475K
ENV
290
DELISTED
ENVESTNET, INC.
ENV
$7.81M 0.05%
119,370
+2,085
+2% +$120K
CBOE icon
291
Cboe Global Markets
CBOE
$30.2B
$7.77M 0.05%
81,425
+5,994
+8% +$569K
MCO icon
292
Moody's
MCO
$81.9B
$7.67M 0.05%
42,329
+1
+0% +$164
AKAM icon
293
Akamai
AKAM
$17.2B
$7.56M 0.05%
105,412
-4,298
-4% -$291K
NKTR icon
294
Nektar Therapeutics
NKTR
$2.48B
$7.52M 0.05%
14,921
+808
+6% +$479K
FDX icon
295
FedEx
FDX
$74.7B
$7.45M 0.05%
41,051
-1,706
-4% -$302K
XLI icon
296
State Street Industrial Select Sector SPDR ETF
XLI
$33.6B
$7.42M 0.05%
98,960
-16,188
-14% -$1.17M
BMRN icon
297
BioMarin Pharmaceuticals
BMRN
$11.9B
$7.42M 0.05%
83,489
+4,020
+5% +$373K
TEL icon
298
TE Connectivity
TEL
$62.3B
$7.37M 0.04%
91,270
+100
+0.1% +$8.07K
ROK icon
299
Rockwell Automation
ROK
$49.2B
$7.33M 0.04%
41,802
+206
+0.5% +$35K
DVAX
300
DELISTED
Dynavax Technologies
DVAX
$7.28M 0.04%
996,203
+30,667
+3% +$300K
10 11
12
13 14

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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.