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Natural Alternatives - 38 Year Stock Price History | NAII

Historical daily share price chart and data for Natural Alternatives since 1987 adjusted for splits and dividends. The latest closing stock price for Natural Alternatives as of August 28, 2025 is 3.73.
  • The all-time high Natural Alternatives stock closing price was 26.00 on July 17, 1998.
  • The Natural Alternatives 52-week high stock price is 6.88, which is 84.5% above the current share price.
  • The Natural Alternatives 52-week low stock price is 2.57, which is 31.1% below the current share price.
  • The average Natural Alternatives stock price for the last 52 weeks is 4.05.
For more information on how our historical price data is adjusted see the Stock Price Adjustment Guide.
  
Natural Alternatives Historical Annual Stock Price Data
Year Average Stock Price Year Open Year High Year Low Year Close Annual % Change
2025 3.5929 4.2850 4.3150 2.6100 3.7300 -13.46%
2024 5.7155 6.5343 6.8799 4.1400 4.3100 -34.00%
2023 7.4967 8.2001 9.9200 5.4500 6.5300 -22.17%
2022 10.3103 12.6301 13.6200 7.1950 8.3900 -33.68%
2021 14.8730 10.6000 19.1500 10.6000 12.6500 19.46%
2020 7.6640 7.9200 10.9900 5.1500 10.5889 32.69%
2019 10.5975 9.8400 13.9751 7.6100 7.9800 -18.82%
2018 10.3221 10.3000 12.0500 9.1472 9.8300 -4.56%
2017 10.2095 11.4500 12.0250 8.4500 10.3000 -8.85%
2016 11.4035 10.4200 14.2900 6.9700 11.3000 9.28%
2015 6.0720 5.3201 10.4300 5.1000 10.3400 93.27%
2014 5.5547 5.6300 6.4800 5.0300 5.3500 -4.12%
2013 5.0715 5.1310 6.1200 4.2300 5.5800 11.16%
2012 6.7513 8.2100 10.4300 4.8000 5.0200 -43.21%
2011 5.4002 5.6400 9.2500 3.2000 8.8400 57.86%
2010 7.3061 7.5300 8.4500 5.2900 5.6000 -27.74%
2009 6.6326 6.1500 7.9000 5.7800 7.7500 27.05%
2008 7.5946 8.7800 9.1800 5.7000 6.1000 -29.32%
2007 7.7863 8.8300 9.2600 5.8100 8.6300 -0.46%
2006 8.7729 6.3700 10.8600 6.3400 8.6700 33.80%
2005 7.1867 8.7900 9.8500 5.2700 6.4800 -29.79%
2004 8.8710 6.4000 13.8000 6.1990 9.2300 44.22%
2003 4.7156 3.9500 6.4100 3.1690 6.4000 60.60%
2002 2.7401 2.4000 4.0800 1.6800 3.9850 77.11%
2001 2.1782 2.0938 3.0000 1.1800 2.2500 2.86%
2000 2.0495 3.1875 3.6250 1.3750 2.1875 -32.69%
1999 4.5680 11.0000 12.5000 2.5625 3.2500 -70.45%
1998 15.9527 10.4375 26.0000 9.3750 11.0000 3.53%
1997 8.2676 8.5000 10.7500 6.8750 10.6250 26.87%
1996 8.9946 8.2500 11.1250 7.1250 8.3750 4.69%
1995 7.1414 4.5000 12.6250 4.0625 8.0000 88.24%
1994 8.2604 11.8750 12.0000 4.0000 4.2500 -65.31%
1993 6.1031 5.0000 12.7500 4.0000 12.2500 127.91%
1992 4.0725 3.1250 6.1250 3.1250 5.3750 72.00%
1991 2.5329 2.1570 3.3125 1.5938 3.1250 44.88%
1990 3.0712 2.3438 4.3125 1.3760 2.1570 -7.97%
1989 2.4469 3.1250 3.1250 2.3438 2.3438 0.00%
1988 3.2868 3.9500 5.5000 2.3438 2.3438 -40.66%
Sector Industry Market Cap Revenue
Medical Medical - Drug Manufacturing $0.023B $0.114B
NATURAL ALTERNATIVES INTL INC is engaged in the formulation and production of encapsulated vitamins and nutrients and provides for its clients assistance with foreign registration of products, graphic design, brochures, formulations and a host of other marketing related services.
Stock Name Country Market Cap PE Ratio
Chugai Pharmaceutical (CHGCY) Japan $72.041B 27.71
Zoetis (ZTS) United States $69.314B 25.14
Takeda Pharmaceutical (TAK) Japan $47.697B 9.73
Daiichi Sankyo, - (DSNKY) Japan $45.256B 23.19
BeOne Medicines - (ONC) Switzerland $33.543B 0.00
Sandoz Group AG (SDZNY) Switzerland $27.672B 0.00
Summit Therapeutics (SMMT) United States $17.605B 0.00
Merck (MKKGY) Germany $16.427B 10.68
Shionogi (SGIOY) Japan $14.649B 14.68
Neurocrine Biosciences (NBIX) United States $13.846B 41.30
United Therapeutics (UTHR) United States $13.747B 11.90
IPSEN (IPSEY) France $11.409B 0.00
Orion OYJ (ORINY) Finland $11.203B 27.00
Madrigal Pharmaceuticals (MDGL) United States $9.722B 0.00
Eisai (ESAIY) $8.913B 10.05
Corcept Therapeutics (CORT) United States $7.347B 61.70
Stevanato Group S.p.A (STVN) Italy $6.968B 41.09
Grifols, S.A (GRFS) Spain $6.855B 0.00
Ionis Pharmaceuticals (IONS) United States $6.796B 0.00
Ono Pharmaceutical (OPHLF) Japan $5.740B 19.71
Hikma Pharmaceuticals Plc (HKMPF) United Kingdom $5.436B 0.00
Soleno Therapeutics (SLNO) United States $3.596B 0.00
AMNEAL PHARMACEUTICALS, INC (AMRX) United States $3.003B 14.27
Crinetics Pharmaceuticals (CRNX) United States $2.919B 0.00
NewAmsterdam Pharma (NAMS) Netherlands $2.709B 0.00
Hypermarcas (HYPMY) Brazil $2.686B 20.19
Procaps Group, S.A (PROCF) Luxembourg $2.557B 0.00
Catalyst Pharmaceuticals (CPRX) United States $2.520B 8.44
Centessa Pharmaceuticals (CNTA) United Kingdom $2.248B 0.00
Ocular Therapeutix (OCUL) United States $2.124B 0.00
Dyne Therapeutics (DYN) United States $1.919B 0.00
BioCryst Pharmaceuticals (BCRX) United States $1.744B 0.00
Guardian Pharmacy Services (GRDN) United States $1.673B 0.00
Aurinia Pharmaceuticals Inc (AUPH) Canada $1.578B 23.51
Ardelyx (ARDX) United States $1.533B 0.00
Harrow (HROW) United States $1.443B 0.00
Avadel Pharmaceuticals (AVDL) Ireland $1.433B 0.00
Xeris Biopharma Holdings (XERS) United States $1.264B 0.00
Evotec AG (EVO) Germany $1.243B 0.00
Collegium Pharmaceutical (COLL) United States $1.222B 6.68
Enliven Therapeutics (ELVN) United States $1.201B 0.00
ARS Pharmaceuticals (SPRY) United States $1.148B 0.00
Cronos Group (CRON) Canada $0.996B 0.00
Amylyx Pharmaceuticals (AMLX) United States $0.836B 0.00
Akebia Therapeutics (AKBA) United States $0.833B 0.00
Elite Pharmaceuticals (ELTP) United States $0.735B 0.00
Theravance Biopharma (TBPH) United States $0.699B 57.83
Rigel Pharmaceuticals (RIGL) United States $0.697B 7.18
ProKidney (PROK) United States $0.695B 0.00
KalVista Pharmaceuticals (KALV) United States $0.678B 0.00
Organogenesis (ORGO) United States $0.653B 0.00
Relay Therapeutics (RLAY) United States $0.619B 0.00
Bioventus (BVS) United States $0.612B 14.80
Tourmaline Bio (TRML) United States $0.601B 0.00
Siga Technologies (SIGA) United States $0.601B 7.42
USANA Health Sciences (USNA) United States $0.583B 11.95
Xencor (XNCR) United States $0.580B 0.00
Nektar Therapeutics (NKTR) United States $0.568B 0.00
Savara (SVRA) United States $0.567B 0.00
Oruka Therapeutics (ORKA) United States $0.554B 0.00
Zevra Therapeutics (ZVRA) United States $0.509B 0.00
Esperion Therapeutics (ESPR) United States $0.448B 0.00
Nanobiotix S.A (NBTX) France $0.429B 0.00
Aquestive Therapeutics (AQST) United States $0.376B 0.00
Aldeyra Therapeutics (ALDX) United States $0.350B 0.00
Altimmune (ALT) United States $0.338B 0.00
Larimar Therapeutics (LRMR) United States $0.300B 0.00
Nature's Sunshine Products (NATR) United States $0.297B 19.37
4D Molecular Therapeutics (FDMT) United States $0.288B 0.00
Galectin Therapeutics (GALT) United States $0.274B 0.00
AleAnna (ANNA) United States $0.270B 0.00
Tonix Pharmaceuticals Holding (TNXP) United States $0.260B 0.00
Lexeo Therapeutics (LXEO) United States $0.259B 0.00
Korro Bio (KRRO) United States $0.217B 0.00
Ironwood Pharmaceuticals (IRWD) United States $0.214B 33.00
Lyell Immunopharma (LYEL) United States $0.213B 0.00
Aclaris Therapeutics (ACRS) United States $0.209B 0.00
Heron Therapeutics (HRTX) United States $0.207B 0.00
OmniAb (OABI) United States $0.196B 0.00
MediWound (MDWD) Israel $0.180B 0.00
Journey Medical (DERM) United States $0.176B 0.00
Innate Pharma SA (IPHYF) France $0.173B 0.00
China SXT Pharmaceuticals (SXTC) China $0.169B 0.00
MEI Pharma (MEIP) United States $0.160B 0.00
Achieve Life Sciences (ACHV) Canada $0.152B 0.00
Profound Medical (PROF) Canada $0.134B 0.00
Inhibikase Therapeutics (IKT) United States $0.134B 0.00
Avalo Therapeutics (AVTX) United States $0.122B 0.00
Protara Therapeutics (TARA) United States $0.120B 0.00
Avita Medical (RCEL) United States $0.116B 0.00
Corbus Pharmaceuticals Holdings (CRBP) United States $0.115B 0.00
Cassava Sciences (SAVA) United States $0.110B 0.00
Surrozen (SRZN) United States $0.104B 0.00
Wellgistics Health (WGRX) United States $0.103B 0.00
Dominari Holdings (DOMH) United States $0.099B 0.00
Champions Oncology (CSBR) United States $0.094B 21.25
Cardiol Therapeutics (CRDL) Canada $0.090B 0.00
VAXART, INC (VXRT) United States $0.089B 0.00
BioNxt Solutions (BNXTF) Canada $0.083B 0.00
Assertio Holdings (ASRT) United States $0.080B 0.00
Arch Biopartners (ACHFF) Canada $0.080B 0.00
Pyxis Oncology (PYXS) United States $0.079B 0.00
Context Therapeutics (CNTX) United States $0.075B 0.00
PMV Pharmaceuticals (PMVP) United States $0.074B 0.00
Unicycive Therapeutics (UNCY) United States $0.074B 0.00
Nutriband (NTRB) United States $0.072B 0.00
Gain Therapeutics (GANX) United States $0.072B 0.00
Liminatus Pharma (LIMN) United States $0.071B 0.00
Prelude Therapeutics (PRLD) United States $0.068B 0.00
Vivani Medical (VANI) United States $0.068B 0.00
Metagenomi (MGX) United States $0.065B 0.00
Karyopharm Therapeutics (KPTI) United States $0.062B 0.00
DURECT (DRRX) United States $0.060B 0.00
Inotiv (NOTV) United States $0.058B 0.00
PolyPid (PYPD) Israel $0.053B 0.00
Verrica Pharmaceuticals (VRCA) United States $0.053B 0.00
Cumberland Pharmaceuticals (CPIX) United States $0.052B 31.73
Rafael Holdings (RFL) United States $0.052B 0.00
Jupiter Neurosciences (JUNS) United States $0.051B 0.00
Fractyl Health (GUTS) United States $0.049B 0.00
FibroGen (FGEN) United States $0.048B 0.00
NRx Pharmaceuticals (NRXP) United States $0.046B 0.00
Plus Therapeutics (PSTV) United States $0.045B 0.00
Tempest Therapeutics (TPST) United States $0.044B 0.00
Telomir Pharmaceuticals (TELO) United States $0.043B 0.00
Klotho Neurosciences (KLTO) United States $0.043B 0.00
Century Therapeutics (IPSC) United States $0.042B 0.00
Acrivon Therapeutics (ACRV) United States $0.042B 0.00
ElectroCore (ECOR) United States $0.040B 0.00
Relmada Therapeutics (RLMD) United States $0.037B 0.00
Mural Oncology (MURA) Ireland $0.036B 0.00
SCYNEXIS (SCYX) United States $0.035B 0.00
Vivos Therapeutics (VVOS) United States $0.033B 0.00
Reviva Pharmaceuticals Holdings (RVPH) United States $0.031B 0.00
Iterum Therapeutics (ITRM) Ireland $0.030B 0.00
CASI Pharmaceuticals (CASI) China $0.028B 0.00
Mangoceuticals (MGRX) United States $0.025B 0.00
Enlivex Therapeutics (ENLV) Israel $0.025B 0.00
Cosmos Health (COSM) United States $0.024B 0.00
Citius Pharmaceuticals (CTXR) United States $0.023B 0.00
Scienture Holdings (SCNX) United States $0.020B 0.00
Incannex Healthcare (IXHL) Australia $0.019B 0.00
Mannatech (MTEX) United States $0.018B 0.00
Ainos (AIMD) United States $0.018B 0.00
BioLineRx (BLRX) Israel $0.016B 0.00
Lipocine (LPCN) United States $0.016B 0.00
ProPhase Labs (PRPH) United States $0.014B 0.00
TherapeuticsMD (TXMD) United States $0.013B 0.00
MARKER THERAPEUTICS, INC (MRKR) United States $0.012B 0.00
Lyra Therapeutics (LYRA) United States $0.012B 0.00
BioVie (BIVI) United States $0.011B 0.00
ESSA Pharma (EPIX) Canada $0.011B 0.00
Phio Pharmaceuticals (PHIO) United States $0.011B 0.00
Talphera (TLPH) United States $0.011B 0.00
Aptorum Group (APM) United Kingdom $0.011B 0.00
Ernexa Therapeutics (ERNA) United States $0.010B 0.00
Traws Pharma (TRAW) United States $0.010B 0.02
Kiora Pharmaceuticals (KPRX) United States $0.010B 0.00
Heatwurx (PCSA) United States $0.010B 0.00
CERo Therapeutics Holdings (CERO) United States $0.009B 0.00
Carisma Therapeutics (CARM) United States $0.009B 0.00
TNF Pharmaceuticals (TNFA) United States $0.009B 0.00
Addex Therapeutics (ADXN) Switzerland $0.008B 0.00
VYNE Therapeutics (VYNE) United States $0.008B 0.00
TransCode Therapeutics (RNAZ) United States $0.008B 0.00
Biomerica (BMRA) United States $0.008B 0.00
NLS Pharmaceutics (NLSP) Switzerland $0.008B 0.00
Sonoma Pharmaceuticals (SNOA) United States $0.007B 0.00
Indaptus Therapeutics (INDP) United States $0.007B 0.00
XTL Biopharmaceuticals (XTLB) Israel $0.007B 0.00
Nuvilex (PMCB) United States $0.006B 0.00
Vyome Holdings (HIND) United States $0.006B 0.00
60 Degrees Pharmaceuticals (SXTP) United States $0.006B 0.00
Aditxt (ADTX) United States $0.005B 0.00
Alaunos Therapeutics (TCRT) United States $0.005B 0.00
Clearmind Medicine (CMND) Canada $0.005B 0.00
InMed Pharmaceuticals (INM) Canada $0.004B 0.00
Xenetic Biosciences (XBIO) United States $0.004B 0.00
Quoin Pharmaceuticals (QNRX) United States $0.004B 0.00
XORTX Therapeutics (XRTX) Canada $0.004B 0.00
CDT Equity (CDT) United States $0.004B 0.00
Jaguar Animal Health (JAGX) United States $0.004B 0.00
Shuttle Pharmaceuticals Holdings (SHPH) United States $0.004B 0.00
Redhill Biopharma (RDHL) Israel $0.003B 0.00
Qualigen Therapeutics (QLGN) United States $0.003B 0.00
Salarius Pharmaceuticals (SLRX) United States $0.003B 0.00
PainReform (PRFX) Israel $0.003B 0.00
SHINECO (SISI) China $0.002B 0.00
Galmed Pharmaceuticals (GLMD) Israel $0.002B 0.00
Universe Pharmaceuticals INC (UPC) China $0.002B 0.00
SciSparc (SPRC) Israel $0.001B 0.00
Indivior (INDV) United States $0.000B 13.64
4D Pharma (LBPS) United Kingdom $0.000B 0.00
Minerva Neurosciences (NERV) United States $0.000B 1.59
Patheon (PTHN) Netherlands $0.000B 0.00
RVL Pharmaceuticals (RVLP) United States $0.000B 0.00
Silence Therapeutics (SLN) United Kingdom $0.000B 0.00