HoldingsChannel.com
William Blair Investment Management LLC Top Holdings
As of  12/31/2019

   EntityAmountChange
 09/30/2019 to 12/31/2019
Position Size
($ in 1000's)
ALIBABA GROUP HLDG LTD 5,671,743 -319,588 $1,202,870
     BABA5,671,743-319,588$1,202,870
TAIWAN SEMICONDUCTOR MFG LTD 17,339,543 +17,238 $1,007,332
     TSM17,339,543+17,238$1,007,332
SPDR S&P 500 ETF TR (SPY) 2,247,300 -210,000 $723,316
     SPY2,247,300-210,000$723,316
BWX TECHNOLOGIES INC 7,357,982 +210,634 $456,784
     BWXT7,357,982+210,634$456,784
BROOKFIELD ASSET MGMT INC 7,162,893 -29,033 $414,015
     BAM7,162,893-29,033$414,015
ENCOMPASS HEALTH CORP 4,968,282 +317,629 $344,153
     EHC4,968,282+317,629$344,153
TREX CO INC 3,784,151 +120,128 $340,119
     TREX3,784,151+120,128$340,119
BURLINGTON STORES INC 1,466,992 -42,867 $334,518
     BURL1,466,992-42,867$334,518
EURONET WORLDWIDE INC 2,067,200 +85,725 $325,708
     EEFT2,067,200+85,725$325,708
HORIZON THERAPEUTICS PUB LTD 8,855,490 +515,049 $320,569
     HZNP8,855,490+515,049$320,569
CANADIAN NATL RY CO 3,342,955 -10,476 $302,429
     CNI3,342,955-10,476$302,429
NETEASE INC 965,393 -83,375 $296,002
     NTES965,393-83,375$296,002
LAMB WESTON HLDGS INC 3,430,368 +36,370 $295,115
     LW3,430,368+36,370$295,115
LIVE NATION ENTERTAINMENT IN 4,088,371 +154,055 $292,196
     LYV4,088,371+154,055$292,196
MARTIN MARIETTA MATLS INC 1,038,447 +22,837 $290,391
     MLM1,038,447+22,837$290,391
GRAND CANYON ED INC 2,867,187 +114,271 $274,648
     LOPE2,867,187+114,271$274,648
INSULET CORP 1,601,024 -39,386 $274,095
     PODD1,601,024-39,386$274,095
TELEDYNE TECHNOLOGIES INC 782,519 +14,788 $271,174
     TDY782,519+14,788$271,174
PURE STORAGE INC 15,543,680 +2,648,556 $265,952
     PSTG15,543,680+2,648,556$265,952
TELEFLEX INC 686,983 +6,652 $258,608
     TFX686,983+6,652$258,608
AMAZON COM INC 130,573 +14,497 $241,278
     AMZN130,573+14,497$241,278
VAIL RESORTS INC 1,000,627 +10,104 $239,980
     MTN1,000,627+10,104$239,980
TORONTO DOMINION BK ONT 4,224,733 -34,045 $236,969
     TD4,224,733-34,045$236,969
J2 GLOBAL INC 2,470,956 +39,669 $231,553
     JCOM2,470,956+39,669$231,553
ALPHABET INC 170,449 +14,728 $228,298
     GOOGL170,449+14,728$228,298
CROWN HOLDINGS INC 3,083,877 +57,217 $223,704
     CCK3,083,877+57,217$223,704
TRANSUNION 2,547,939 -540,939 $218,129
     TRU2,547,939-540,939$218,129
BJS WHSL CLUB HLDGS INC 9,485,284 +750,220 $215,695
     BJ9,485,284+750,220$215,695
BRINKS CO 2,306,054 +62,413 $209,113
     BCO2,306,054+62,413$209,113
SABRE CORP 9,242,665 +106,535 $207,405
     SABR9,242,665+106,535$207,405
PENUMBRA INC 1,218,187 +45,395 $200,112
     PEN1,218,187+45,395$200,112
COPART INC 2,178,175 -1,070,392 $198,083
     CPRT2,178,175-1,070,392$198,083
NICE LTD 1,265,793 -117 $196,381
     NICE1,265,793-117$196,381
CABLE ONE INC 130,333 -772 $193,997
     CABO130,333-772$193,997
BOOZ ALLEN HAMILTON HLDG COR 2,714,905 -38,337 $193,111
     BAH2,714,905-38,337$193,111
MICROSOFT CORP 1,211,015 +146,867 $190,977
     MSFT1,211,015+146,867$190,977
UNITEDHEALTH GROUP INC 642,436 +39,079 $188,863
     UNH642,436+39,079$188,863
GODADDY INC 2,729,626 +70,142 $185,396
     GDDY2,729,626+70,142$185,396
GUIDEWIRE SOFTWARE INC 1,676,665 +47,830 $184,048
     GWRE1,676,665+47,830$184,048
HUAZHU GROUP LTD 4,550,094 -73,238 $182,295
     HTHT4,550,094-73,238$182,295
CHECK POINT SOFTWARE TECH LT 1,641,564 -13,889 $182,148
     CHKP1,641,564-13,889$182,148
WEX INC 869,277 +4,169 $182,079
     WEX869,277+4,169$182,079
ASPEN TECHNOLOGY INC 1,495,493 -98,865 $180,850
     AZPN1,495,493-98,865$180,850
AMEDISYS INC 1,070,154 +57,572 $178,630
     AMED1,070,154+57,572$178,630
PORTOLA PHARMACEUTICALS INC 7,249,072 +390,131 $173,108
     PTLA7,249,072+390,131$173,108
HDFC BANK LTD 2,646,745 -185,123 $167,672
     HDB2,646,745-185,123$167,672
MASTERCARD INC 551,433 +18,099 $164,652
     MA551,433+18,099$164,652
FIRSTCASH INC 2,038,996 +97,497 $164,404
     FCFS2,038,996+97,497$164,404
STERIS PLC 1,068,697 +20,636 $162,891
     STE1,068,697+20,636$162,891
RITCHIE BROS AUCTIONEERS 3,638,033 +167,466 $156,254
     RBA3,638,033+167,466$156,254

See Full List: All Stocks Held By William Blair Investment Management LLC
— Including:
     • Biggest new positions
     • Biggest exits
     • Biggest increased positions
     • Biggest decreased positions

See Details: Top 10 Stocks Held By William Blair Investment Management LLC

Size ($ in 1000's)
At 12/31/2019: $25,094,282
At 09/30/2019: $23,381,411

William Blair Investment Management LLC holdings changes, total fund size, and other information presented on HoldingsChannel.com was derived from William Blair Investment Management LLC 13F filings. Link to 13F filings: SEC filings

William Blair Investment Management LLC Top Holdings 13F Filings | www.HoldingsChannel.com

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