Alexion Pharmaceuticals - 24 Year Stock Price History | ALXN

Historical daily share price chart and data for Alexion Pharmaceuticals since 1996 adjusted for splits. The latest closing stock price for Alexion Pharmaceuticals as of September 18, 2020 is 113.72.
  • The all-time high Alexion Pharmaceuticals stock closing price was 207.84 on July 23, 2015.
  • The Alexion Pharmaceuticals 52-week high stock price is 121.50, which is 6.8% above the current share price.
  • The Alexion Pharmaceuticals 52-week low stock price is 72.67, which is 36.1% below the current share price.
  • The average Alexion Pharmaceuticals stock price for the last 52 weeks is 104.45.
For more information on how our historical price data is adjusted see the Stock Price Adjustment Guide.
Alexion Pharmaceuticals Historical Annual Stock Price Data
Year Average Stock Price Year Open Year High Year Low Year Close Annual % Change
2020 103.7152 107.8400 119.9000 75.5600 113.7200 5.15%
2019 118.1113 98.0500 141.3000 94.8400 108.1500 11.08%
2018 120.0025 124.0500 139.0100 93.9400 97.3600 -18.59%
2017 125.7262 122.6300 146.6900 97.7000 119.5900 -2.26%
2016 134.8574 184.6800 184.9000 110.0100 122.3500 -35.86%
2015 177.6471 186.6000 207.8400 145.6000 190.7500 3.09%
2014 166.7312 133.4400 200.7900 129.8200 185.0300 39.24%
2013 104.9874 100.0500 132.9100 83.3900 132.8840 41.76%
2012 94.2987 70.5700 118.1500 70.2900 93.7400 31.10%
2011 53.8780 40.6650 71.5500 40.6650 71.5000 77.53%
2010 29.1347 24.1250 41.1700 22.7500 40.2750 64.99%
2009 20.1819 18.0650 24.4100 15.8250 24.4100 34.90%
2008 18.1343 18.8775 23.7525 12.7425 18.0950 -3.53%
2007 13.6236 10.1525 19.9500 8.9425 18.7575 85.76%
2006 8.7138 5.0725 11.3500 5.0150 10.0975 99.46%
2005 6.0305 6.0925 7.4975 4.6550 5.0625 -19.64%
2004 4.9553 4.3125 6.3750 3.3925 6.3000 48.15%
2003 3.8359 3.6250 5.2300 2.5850 4.2525 20.47%
2002 4.0792 5.7750 6.5650 2.3950 3.5300 -42.23%
2001 6.3246 15.3900 18.6875 3.7375 6.1100 -62.37%
2000 17.8134 7.3750 29.0750 6.9375 16.2350 115.53%
1999 3.2124 3.1250 7.8450 2.1095 7.5325 125.19%
1998 2.7282 2.9700 3.7500 1.5000 3.3450 7.04%
1997 2.7061 2.1875 3.8450 2.0313 3.1250 43.84%
Sector Industry Market Cap Revenue
Medical Medical - Biomedical and Genetics $24.924B $4.991B
Alexion Pharmaceuticals, Inc. is a global biopharmaceutical company focused on serving patients and families affected by rare diseases through the innovation, development and commercialization of life-changing therapies. Alexion is the global leader in complement inhibition and has developed and commercializes the first and only approved complement inhibitor to treat patients with paroxysmal nocturnal hemoglobinuria (PNH), atypical hemolytic uremic syndrome (aHUS), and anti-acetylcholine receptor (AchR) antibody-positive generalized myasthenia gravis (gMG). In addition, Alexion has two highly innovative enzyme replacement therapies for patients with life-threatening and ultra-rare metabolic disorders, hypophosphatasia (HPP) and lysosomal acid lipase deficiency (LAL-D).
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BeiGene (BGNE) Cayman Islands $24.668B 0.00
Genmab (GNMSF) Denmark $23.997B 5.53
SINO PHARMACEUT (SBMFF) Hong Kong, SAR China $21.148B 0.00
Immunomedics (IMMU) United States $19.770B 0.00
Incyte (INCY) United States $18.981B 0.00
Horizon Therapeutics Public (HZNP) Ireland $16.502B 38.61
Alnylam Pharmaceuticals (ALNY) United States $15.338B 0.00
BioNTech SE (BNTX) Germany $15.160B 0.00
Bio-Rad Laboratories (BIO.B) United States $15.059B 68.11
BioMarin Pharmaceutical (BMRN) United States $14.396B 104.45
ARGENX SE-ADR (ARGX) Netherlands $11.740B 0.00
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Guardant Health (GH) United States $10.191B 0.00
Bio-Techne Corp (TECH) United States $9.404B 64.52
Galapagos (GLPG) Belgium $9.087B 32.92
Exelixis (EXEL) United States $8.281B 30.11
SWEDISH ORP BIO (BIOVF) Sweden $7.799B 19.40
Ascendis Pharma (ASND) Denmark $7.768B 0.00
Repligen (RGEN) United States $7.665B 121.66
MyoKardia (MYOK) United States $7.238B 0.00
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Momenta Pharmaceuticals (MNTA) United States $6.220B 0.00
CRISPR Therapeutics AG (CRSP) Switzerland $6.028B 186.74
Emergent Biosolutions (EBS) United States $5.324B 21.09
Ultragenyx Pharmaceutical (RARE) United States $5.021B 0.00
MorphoSys AG (MOR) Germany $4.503B 59.02
China Biologic Products (CBPO) China $4.408B 26.16
Blueprint Medicines (BPMC) United States $4.391B 0.00
Vir Biotechnology (VIR) United States $4.157B 0.00
Legend Biotech (LEGN) United States $4.136B 0.00
Arena Pharmaceuticals (ARNA) United States $4.107B 0.00
Denali Therapeutics (DNLI) United States $4.092B 0.00
NeoGenomics (NEO) United States $3.957B 1194.33
Halozyme Therapeutics (HALO) United States $3.801B 0.00
Amicus Therapeutics (FOLD) United States $3.778B 0.00
Bluebird Bio (BLUE) United States $3.752B 0.00
Reata Pharmaceuticals (RETA) United States $3.545B 0.00
Fate Therapeutics (FATE) United States $3.409B 0.00
Global Blood Therapeutics (GBT) United States $3.395B 0.00
Insmed (INSM) United States $3.386B 0.00
Principia Biopharma (PRNB) United States $3.330B 0.00
Deciphera Pharmaceuticals (DCPH) United States $3.161B 0.00
Twist Bioscience (TWST) United States $3.029B 0.00
Alkermes (ALKS) Ireland $2.868B 60.10
Inovio Pharmaceuticals (INO) United States $2.848B 0.00
PHARMA MAR SA (PHMMF) Spain $2.290B 0.00
Sorrento Therapeutics (SRNE) United States $2.282B 0.00
Intra-Cellular Therapies (ITCI) United States $2.117B 0.00
Editas Medicine (EDIT) United States $2.111B 0.00
Revance Therapeutics (RVNC) United States $2.106B 0.00
I-Mab (IMAB) China $2.092B 0.00
Mesoblast (MESO) Australia $2.092B 0.00
Zymeworks (ZYME) Canada $2.069B 0.00
Eidos Therapeutics (EIDX) United States $2.034B 0.00
BAVARIAN NORDIC (BVNRY) Denmark $2.006B 22.47
Seres Therapeutics (MCRB) United States $1.956B 0.00
Forma Therapeutics Holdings (FMTX) United States $1.862B 0.00
UniQure (QURE) Netherlands $1.853B 0.00
Akcea Therapeutics (AKCA) United States $1.844B 0.00
Viela Bio (VIE) United States $1.628B 0.00
Amarin (AMRN) Ireland $1.607B 0.00
Cytokineticsorporated (CYTK) United States $1.537B 0.00
Sangamo Therapeutics (SGMO) United States $1.525B 0.00
Beam Therapeutics (BEAM) United States $1.524B 0.00
Mersana Therapeutics (MRSN) United States $1.509B 0.00
Ligand Pharmaceuticals (LGND) United States $1.480B 50.04
Dicerna Pharmaceuticals (DRNA) United States $1.478B 0.00
Zealand Pharma (ZEAL) Denmark $1.451B 0.00
Arcus Biosciences (RCUS) United States $1.424B 0.00
Coherus BioSciences (CHRS) United States $1.422B 8.29
Intercept Pharmaceuticals (ICPT) United States $1.382B 0.00
Intellia Therapeutics (NTLA) United States $1.381B 0.00
Adaptimmune Therapeutics (ADAP) United Kingdom $1.357B 0.00
Epizyme (EPZM) United States $1.346B 0.00
Zealand Pharma (ZLDPF) Denmark $1.339B 0.00
NGM Biopharmaceuticals (NGM) United States $1.317B 0.00
Compugen (CGEN) Israel $1.290B 0.00
Alcobra (ARCT) United States $1.144B 0.00
Nabriva Therapeutics AG (NBRV) Ireland $1.137B 0.00
REGENXBIO (RGNX) United States $1.118B 0.00
Alector (ALEC) United States $1.115B 0.00
Arvinas (ARVN) United States $1.098B 0.00
Athenex (ATNX) United States $1.073B 0.00
Retrophin (RTRX) United States $1.031B 0.00
Castle Biosciences (CSTL) United States $1.005B 0.00
Pliant Therapeutics (PLRX) United States $1.000B 0.00
Adverum Biotechnologies (ADVM) United States $0.999B 0.00
Myriad Genetics (MYGN) United States $0.966B 0.00
Agenus (AGEN) United States $0.950B 0.00
Heska (HSKA) United States $0.933B 0.00
NantKwest (NK) United States $0.917B 0.00
Morphic Holding (MORF) United States $0.885B 0.00
Cellectis S.A (CLLS) France $0.885B 0.00
Vericel (VCEL) United States $0.865B 0.00
OXFORD BIOMEDCL (OXBDF) United Kingdom $0.842B 0.00
Frequency Therapeutics (FREQ) United States $0.840B 0.00
VBI Vaccines (VBIV) United States $0.828B 0.00
Intrexon (PGEN) United States $0.810B 0.00
Protagonist Therapeutics (PTGX) United States $0.810B 0.00
Kadmon Holdings (KDMN) United States $0.770B 0.00
Codexis (CDXS) United States $0.720B 0.00
MiMedx (MDXG) United States $0.715B 0.00
Pharming Group (PHGUF) Netherlands $0.714B 16.29
WAVE Life Sciences (WVE) Singapore $0.712B 0.00
Cara Therapeutics (CARA) United States $0.681B 0.00
Northwest Biotherapeutics (NWBO) United States $0.669B 0.00
Syndax Pharmaceuticals (SNDX) United States $0.656B 0.00
AC Immune SA (ACIU) Switzerland $0.644B 0.00
Autolus Therapeutics (AUTL) United Kingdom $0.642B 0.00
Sinovac Biotech (SVA) China $0.640B 43.13
Clovis Oncology (CLVS) United States $0.614B 0.00
Geron (GERN) United States $0.609B 0.00
Basilea Pharmaceutica AG (BPMUF) Switzerland $0.596B 0.00
Dynavax Technologies (DVAX) United States $0.595B 0.00
ZIOPHARM Oncology Inc (ZIOP) United States $0.591B 0.00
Albireo Pharma (ALBO) United States $0.583B 0.00
Aquinox Pharmaceuticals (NLTX) United States $0.580B 0.00
IVERIC Bio (ISEE) United States $0.563B 0.00
Forte Biosciences (FBRX) United States $0.555B 0.00
Cel-Sci (CVM) United States $0.554B 0.00
Kala Pharmaceuticals (KALA) United States $0.551B 0.00
Scholar Rock Holding (SRRK) United States $0.543B 0.00
Vanda Pharmaceuticals (VNDA) United States $0.538B 4.71
Anika Therapeutics (ANIK) United States $0.519B 22.70
Cue Biopharma (CUE) United States $0.510B 0.00
Celldex Therapeutics (CLDX) United States $0.506B 0.00
MeiraGTx Holdings (MGTX) United States $0.506B 0.00
Orchard Therapeutics (ORTX) United Kingdom $0.503B 0.00
MannKind (MNKD) United States $0.477B 0.00
UROGEN PHARMA (URGN) United States $0.470B 0.00
Syros Pharmaceuticals (SYRS) United States $0.458B 0.00
Starpharma Holdings (SPHRY) Australia $0.457B 0.00
Avid Bioservices (CDMO) United States $0.449B 0.00
AnaptysBio (ANAB) United States $0.439B 0.00
Pfenex (PFNX) United States $0.437B 0.00
Athersys (ATHX) United States $0.430B 0.00
IBio (IBIO) United States $0.429B 0.00
Sutro Biopharma (STRO) United States $0.426B 0.00
Prothena (PRTA) Ireland $0.425B 0.00
Fortress Biotech (FBIO) United States $0.421B 0.00
Amryt Pharma (AMYT) United Kingdom $0.414B 0.00
Puma Biotechnology (PBYI) United States $0.411B 0.00
BioDelivery Sciences (BDSI) United States $0.411B 29.07
Xenon Pharmaceuticals (XENE) Canada $0.400B 0.00
Kamada (KMDA) Israel $0.390B 18.66
PDL BioPharma (PDLI) United States $0.380B 0.00
Merus (MRUS) Netherlands $0.376B 0.00
ANI Pharmaceuticals (ANIP) United States $0.374B 8.83
Cellular Biomedicine (CBMG) United States $0.363B 0.00
Aeglea BioTherapeutics (AGLE) United States $0.351B 0.00
Bicycle Therapeutics (BCYC) United Kingdom $0.351B 0.00
AMAG Pharmaceuticals (AMAG) United States $0.349B 0.00
Trevena (TRVN) United States $0.342B 0.00
CytomX Therapeutics (CTMX) United States $0.342B 0.00
Precision BioSciences (DTIL) United States $0.311B 0.00
Menlo Therapeutics (VYNE) United States $0.307B 0.00
Paratek Pharmaceuticals (PRTK) United States $0.304B 0.00
Innate Pharma S.A (IPHA) France $0.302B 0.00
Affimed (AFMD) Germany $0.290B 0.00
Cyclerion Therapeutics (CYCN) United States $0.285B 0.00
Prometic Life Sciences (LMNL) Canada $0.282B 0.00
OSMOTICA PHARM (OSMT) United States $0.281B 0.00
Selecta Biosciences (SELB) United States $0.279B 0.00
ChromaDex (CDXC) United States $0.275B 0.00
NextCure (NXTC) United States $0.263B 0.00
Arbutus Biopharma (ABUS) United States $0.260B 0.00
Pluristem Therapeutics (PSTI) Israel $0.258B 0.00
HOOKIPA Pharma (HOOK) United States $0.240B 0.00
Verastem (VSTM) United States $0.236B 0.00
Aduro Biotech (ADRO) United States $0.224B 0.00
TELA Bio (TELA) United States $0.222B 0.00
Dyadic (DYAI) United States $0.222B 0.00
Liquidia Technologies (LQDA) United States $0.219B 0.00
XOMA (XOMA) United States $0.218B 0.00
DBV Technologies S.A (DBVT) France $0.214B 0.00
Spero Therapeutics (SPRO) United States $0.214B 0.00
Kindred Biosciences (KIN) United States $0.208B 0.00
Cerecor (CERC) United States $0.208B 0.00
ADMA Biologics Inc (ADMA) United States $0.206B 0.00
Checkpoint Therapeutics (CKPT) United States $0.204B 0.00
Cardiff Oncology (CRDF) United States $0.202B 0.00
Theratechnologies (THTX) Canada $0.201B 0.00
Biofrontera AG (BFRA) Germany $0.200B 0.00
Eton Pharmaceuticals (ETON) United States $0.190B 0.00
POXEL SA FRANCE (PXXLF) France $0.188B 0.00
GENFIT S.A (GNFT) France $0.179B 0.00
Exicure (XCUR) United States $0.179B 0.00
Nymox Pharmaceutical (NYMX) Canada $0.177B 0.00
Abeona Therapeutics (ABEO) United States $0.176B 0.00
Lexicon Pharmaceuticals (LXRX) United States $0.174B 8.10
Aytu Bioscience (AYTU) United States $0.166B 0.00
AquaBounty Technologies (AQB) United States $0.166B 0.00
Aptinyx (APTX) United States $0.163B 0.00
AVEO Pharmaceuticals (AVEO) United States $0.161B 0.00
Pieris Pharmaceuticals (PIRS) United States $0.155B 0.00
VolitionRX (VNRX) United States $0.149B 0.00
Nicox SA (NICXF) France $0.149B 0.00
SESEN BIO, INC (SESN) United States $0.148B 0.00
Five Prime Therapeutics (FPRX) United States $0.148B 0.00
VTv Therapeutics (VTVT) United States $0.147B 0.00
Lineage Cell Therapeutics (LCTX) United States $0.147B 0.00
Bellus Health (BLU) Canada $0.147B 0.00
CorMedix Inc (CRMD) United States $0.144B 0.00
Applied Genetic Technologies (AGTC) United States $0.141B 0.00
Celyad SA (CYAD) Belgium $0.136B 0.00
Cidara Therapeutics (CDTX) United States $0.134B 0.00
Catabasis Pharmaceuticals (CATB) United States $0.134B 0.00
Gritstone Oncology (GRTS) United States $0.125B 0.00
Palatin Technologies (PTN) United States $0.123B 3.16
Lumos Pharma (LUMO) United States $0.121B 0.00
Strongbridge Biopharma (SBBP) United States $0.120B 0.00
Orgenesis (ORGS) United States $0.118B 6.02
Protalix BioTherapeutics (PLX) Israel $0.118B 0.00
Vaccinex (VCNX) United States $0.114B 0.00
Unum Therapeutics (UMRX) United States $0.112B 0.00
Windtree Therapeutics (WINT) United States $0.112B 0.00
Enzo Biochem (ENZ) United States $0.111B 0.00
PHASEBIO PHARMA (PHAS) United States $0.107B 0.00
Antibe Therapeutics (ATBPF) Canada $0.107B 0.00
Catalyst Biosciences (CBIO) United States $0.106B 0.00
ARAVIVE, INC (ARAV) United States $0.100B 0.00
AIT Therapeutics (XAIR) United States $0.098B 0.00
Idera Pharmaceuticals (IDRA) United States $0.094B 0.00
Oncobiologics (OTLK) United States $0.088B 0.00
Bionano Genomics (BNGO) United States $0.085B 0.00
DiaMedica Therapeutics (DMAC) United States $0.082B 0.00
Clearside Biomedical (CLSD) United States $0.080B 0.00
Adocia (ADOCY) France $0.080B 0.00
Evogene (EVGN) Israel $0.080B 0.00
Ecology Coatings (ABVC) United States $0.078B 0.00
EYEPOINT PHARMACEUTICALS, INC (EYPT) United States $0.074B 0.00
TRACON Pharmaceuticals (TCON) United States $0.074B 0.00
Prima BioMed (IMMP) Australia $0.074B 0.00
Synlogic (SYBX) United States $0.073B 0.00
Edesa Biotech (EDSA) Canada $0.073B 0.00
Proteostasis Therapeutics (PTI) United States $0.066B 0.00
Aridis Pharmaceuticals (ARDS) United States $0.066B 0.00
AmpliPhi Biosciences (ARMP) United States $0.063B 0.00
Aerpio Pharmaceuticals (ARPO) United States $0.063B 0.00
Emmaus Life Sciences (EMMA) United States $0.063B 0.00
ANIXA BIOSCIENCES INC (ANIX) United States $0.061B 0.00
Curis (CRIS) United States $0.060B 0.00
Soligenix (SNGX) United States $0.060B 0.00
Vascular Biogenics (VBLT) Israel $0.055B 0.00
AnPac Bio-Medical Science (ANPC) China $0.054B 0.00
Stealth BioTherapeutics (MITO) United States $0.053B 76.25
Appili Therapeutics (APLIF) Canada $0.052B 0.00
Cocrystal Pharma (COCP) United States $0.052B 0.00
Happiness Biotech Group (HAPP) China $0.051B 0.00
Genetic Technologies (GENE) Australia $0.051B 0.00
Novogen (KZIA) Australia $0.049B 0.00
ASLAN Pharmaceuticals (ASLN) Singapore $0.049B 0.00
Signal Genetics (MGEN) United States $0.048B 0.00
Organovo Holdings (ONVO) United States $0.047B 0.00
CollPlant Holdings (CLGN) Israel $0.047B 0.00
IMMURON (IMRN) Australia $0.045B 0.00
Pulmatrix (PULM) United States $0.044B 0.00
ATyr Pharma (LIFE) United States $0.041B 0.00
Chanticleer Holdings (SONN) United States $0.038B 0.00
Prana Biotechnology (ATHE) Australia $0.033B 0.00
OvaScience (MLND) United States $0.031B 0.00
BioCardia (BCDA) United States $0.030B 0.00
Apricus Biosciences (SEEL) United States $0.030B 0.00
Advaxis (ADXS) United States $0.029B 0.00
Alimera Sciences (ALIM) United States $0.029B 0.00
Sunesis Pharmaceuticals (SNSS) United States $0.028B 0.00
Cleveland BioLabs (CBLI) United States $0.027B 0.00
Celsion (CLSN) United States $0.026B 0.00
Acorda Therapeutics (ACOR) United States $0.026B 0.00
Aptevo Therapeutics (APVO) United States $0.025B 0.00
Cesca Therapeutics (THMO) United States $0.024B 0.00
Spherix (AIKI) United States $0.021B 0.00
PLANET GREEN HOLDINGS CORP (PLAG) China $0.020B 0.00
Titan Pharmaceuticals (TTNP) United States $0.020B 0.00
AEterna Zentaris (AEZS) United States $0.020B 0.00
Cyclacel Pharmaceuticals (CYCC) United States $0.018B 0.00
MYOS RENS Technology (MYOS) United States $0.018B 0.00
BioPharmX (TMBR) United States $0.012B 0.00
Neuralstem (SNCA) United States $0.010B 0.00
Benitec Biopharma (BNTC) Australia $0.008B 0.00
Entera Bio (ENTX) Israel $0.000B 0.00
Zai Lab (ZLAB) China $0.000B 0.00