Microcap Ledger Biggest microcap movers of September 2026
September's biggest micro-cap gainers and losers, the most +20% days, the heaviest trading, the biggest volume surges, the widest ranges and the sharpest spike-and-fades.
A record of past price moves from exchange data, not a list of stocks to buy or sell.
Ranked from end-of-day prices for 1,253 Nasdaq and NYSE American micro-caps over the 21 sessions of September 2026. DataMeds AI ($MEDS) shows up in six of the eight top-10 lists, including second for gains, first for range, second for volume increase, and ninth for spike and fade. That last list matters because a lot of micro-caps spike and then fall back later: every stock in its top 25 ended September at least half below its high for the month.
Biggest gainers
PDS Biotechnology ($PDSB) led September, up 250.8% from its August 31 close of $0.214 to $0.7507, and closed up 20% or more on four separate days. DataMeds AI ($MEDS, +229.2%) and Stablecoin Development ($SDEV, +174.0%) were next. Six stocks at least doubled.
| # | Stock | Change | Close |
|---|---|---|---|
| 1 | $PDSB PDS Biotechnology Corp Why it moved | +250.8% | $0.214 → $0.7507 |
| 2 | $MEDS DataMeds AI, Inc. | +229.2% | $0.963 → $3.17 |
| 3 | $SDEV Stablecoin Development Corp | +174.0% | $0.9452 → $2.59 |
| 4 | $ETS Elite Express Holding Inc. | +114.2% | $0.8356 → $1.79 |
| 5 | $FEAM 5E Advanced Materials, Inc. | +110.6% | $1.60 → $3.37 |
| 6 | $INDP Indaptus Therapeutics, Inc. | +100.9% | $1.15 → $2.30 |
| 7 | $MGLD Marygold Companies, Inc. | +87.5% | $1.04 → $1.95 |
| 8 | $CYPH Cypherpunk Technologies Inc. | +82.5% | $1.82 → $3.33 |
| 9 | $COSM Cosmos Health Inc. | +77.1% | $0.2428 → $0.4299 |
| 10 | $FTFT Future FinTech Group Inc. | +74.4% | $1.95 → $3.40 |
| 11 | $NCPL Netcapital Inc. | +73.3% | $0.7156 → $1.24 |
| 12 | $FFR FF EAI Robotics Ecosystem Inc. | +61.0% | $0.8135 → $1.31 |
| 13 | $BNKK Bonk, Inc. | +61.0% | $1.23 → $1.98 |
| 14 | $MNTK Montauk Renewables, Inc. | +58.7% | $1.72 → $2.73 |
| 15 | $QNME Quanome Technologies, Inc. | +57.4% | $0.338 → $0.532 |
| 16 | $REFR Research Frontiers Inc | +57.3% | $0.4671 → $0.7347 |
| 17 | $TELA TELA Bio, Inc. | +55.8% | $0.738 → $1.15 |
| 18 | $AOUT American Outdoor Brands, Inc. | +53.3% | $10.57 → $16.20 |
| 19 | $VERI Veritone, Inc. | +49.9% | $0.7937 → $1.19 |
| 20 | $LFCR Lifecore Biomedical, Inc. \de\ | +47.5% | $4.46 → $6.58 |
| 21 | $GPRO GoPro, Inc. | +47.2% | $0.8762 → $1.29 |
| 22 | $VNCE Vince Holding Corp. | +47.2% | $6.84 → $10.07 |
| 23 | $PRTH Priority Technology Holdings, Inc. | +46.9% | $5.31 → $7.80 |
| 24 | $ATER Aterian, Inc. | +46.6% | $0.40 → $0.5866 |
| 25 | $SRZN Surrozen, Inc./DE | +46.1% | $22.02 → $32.18 |
Biggest losers
Freight Technologies ($FRGT) fell 79.1%, from $1.34 to $0.28. 22nd Century Group ($XXII, −73.8%) and VisionWave Holdings ($VWAV, −73.2%) followed. Every stock in the top 25 lost more than half its value over the month.
| # | Stock | Change | Close |
|---|---|---|---|
| 1 | $FRGT Freight Technologies, Inc. | −79.1% | $1.34 → $0.28 |
| 2 | $XXII 22nd Century Group, Inc. | −73.8% | $3.20 → $0.8401 |
| 3 | $VWAV VisionWave Holdings, Inc. | −73.2% | $16.50 → $4.42 |
| 4 | $ONEN ONE Nuclear Energy Inc. | −72.8% | $7.89 → $2.15 |
| 5 | $LEXX Lexaria Bioscience Corp. | −72.1% | $11.28 → $3.15 |
| 6 | $SDST Stardust Power Inc. | −71.3% | $0.37 → $0.106 |
| 7 | $HLSQ Tessera Defense & Homeland Security Inc. | −70.8% | $1.37 → $0.4008 |
| 8 | $ALMS Alumis Inc. | −66.1% | $21.81 → $7.39 |
| 9 | $PPCB Propanc Biopharma, Inc. | −63.4% | $1.35 → $0.494 |
| 10 | $NXXT Nextnrg, Inc. | −63.4% | $2.30 → $0.8419 |
| 11 | $QCLS Q/c Technologies, Inc. | −63.3% | $2.32 → $0.8511 |
| 12 | $GCTK Glucotrack, Inc. | −61.4% | $4.25 → $1.64 |
| 13 | $LGVN Longeveron Inc. | −61.0% | $6.90 → $2.69 |
| 14 | $KITT Nauticus Robotics, Inc. | −60.8% | $4.87 → $1.91 |
| 15 | $SSM Sono Group N.V. | −58.2% | $2.68 → $1.12 |
| 16 | $FCUV Focus Universal Inc. | −57.9% | $9.85 → $4.15 |
| 17 | $TCRX TScan Therapeutics, Inc. | −56.9% | $0.7297 → $0.3145 |
| 18 | $CMPX Compass Therapeutics, Inc. | −56.5% | $2.39 → $1.04 |
| 19 | $XLAB Exascale Labs Holdings Inc. | −55.7% | $4.18 → $1.85 |
| 20 | $CRMT Americas Carmart Inc | −55.6% | $2.30 → $1.02 |
| 21 | $NMRA Neumora Therapeutics, Inc. | −55.2% | $1.33 → $0.5962 |
| 22 | $LONA LeonaBio, Inc. | −54.9% | $7.92 → $3.57 |
| 23 | $RENT Rent the Runway, Inc. | −53.6% | $3.56 → $1.65 |
| 24 | $HCWB HCW Biologics Inc. | −52.4% | $3.59 → $1.71 |
| 25 | $KUST Kustom Entertainment, Inc. | −52.1% | $8.84 → $4.23 |
Most +20% days
Netcapital ($NCPL) and FF EAI Robotics Ecosystem ($FFR) each closed up 20% or more on five days; Netcapital ranks first on the larger single-day gain. Future FinTech ($FTFT) had four, including a +179.2% close. Eleven stocks had three or more such days.
| # | Stock | +20% days | Detail |
|---|---|---|---|
| 1 | $NCPL Netcapital Inc. | 5 days | best +36.4% · period +73.3% |
| 2 | $FFR FF EAI Robotics Ecosystem Inc. | 5 days | best +32.7% · period +61.0% |
| 3 | $FTFT Future FinTech Group Inc. | 4 days | best +179.2% · period +74.4% |
| 4 | $PDSB PDS Biotechnology Corp Why it moved | 4 days | best +69.2% · period +250.8% |
| 5 | $BIAF bioAffinity Technologies, Inc. | 4 days | best +63.6% · period +43.9% |
| 6 | $INDP Indaptus Therapeutics, Inc. | 4 days | best +51.6% · period +100.9% |
| 7 | $MEDS DataMeds AI, Inc. | 3 days | best +274.7% · period +229.2% |
| 8 | $APUS Apimeds Pharmaceuticals US, Inc. | 3 days | best +114.8% · period +28.9% |
| 9 | $SDEV Stablecoin Development Corp | 3 days | best +108.3% · period +174.0% |
| 10 | $GIPR Generation Income Properties, Inc. | 3 days | best +63.4% · period +7.3% |
| 11 | $GPRO GoPro, Inc. | 3 days | best +40.4% · period +47.2% |
| 12 | $WHLR Wheeler Real Estate Investment Trust, Inc. | 2 days | best +190.9% · period −46.9% |
| 13 | $VEEA Veea Inc. Why it moved | 2 days | best +149.3% · period +20.6% |
| 14 | $TNON Tenon Medical, Inc. | 2 days | best +117.2% · period −9.7% |
| 15 | $QNME Quanome Technologies, Inc. | 2 days | best +92.3% · period +57.4% |
| 16 | $DBGI Digital Brands Group, Inc. | 2 days | best +81.1% · period −25.2% |
| 17 | $SOAR Volato Group, Inc. | 2 days | best +77.6% · period +42.8% |
| 18 | $TRUG TruGolf Holdings, Inc. | 2 days | best +76.1% · period −36.9% |
| 19 | $AIFF Firefly Neuroscience, Inc. | 2 days | best +68.9% · period +36.6% |
| 20 | $TPST Tempest Therapeutics, Inc. | 2 days | best +60.2% · period −23.5% |
| 21 | $BFRG BullFrog AI Holdings, Inc. | 2 days | best +58.3% · period +12.3% |
| 22 | $ZEO Zeo Energy Corp. | 2 days | best +57.0% · period +40.6% |
| 23 | $PFSA Profusa, Inc. | 2 days | best +47.8% · period −34.0% |
| 24 | $BYSI BeyondSpring Inc. | 2 days | best +44.1% · period +24.1% |
| 25 | $HOST Host Digital Inc. | 2 days | best +40.5% · period −43.5% |
Most dollar volume
Strive ($ASST) traded $5.46 billion of stock in September, about $260 million a session. GoPro ($GPRO, $2.43 billion) and bioAffinity Technologies ($BIAF, $1.80 billion) were next; bioAffinity also had four +20% days.
| # | Stock | Dollar volume | Average |
|---|---|---|---|
| 1 | $ASST Strive, Inc. | $5.46B | $260.15M a day |
| 2 | $GPRO GoPro, Inc. | $2.43B | $115.64M a day |
| 3 | $BIAF bioAffinity Technologies, Inc. | $1.80B | $85.79M a day |
| 4 | $TNON Tenon Medical, Inc. | $1.69B | $80.24M a day |
| 5 | $SLS SELLAS Life Sciences Group, Inc. | $1.64B | $78.26M a day |
| 6 | $FTFT Future FinTech Group Inc. | $1.60B | $76.16M a day |
| 7 | $MEDS DataMeds AI, Inc. | $1.50B | $71.59M a day |
| 8 | $VEEA Veea Inc. Why it moved | $1.42B | $67.42M a day |
| 9 | $CYPH Cypherpunk Technologies Inc. | $1.20B | $57.18M a day |
| 10 | $NUAI New ERA Energy & Digital, Inc. | $1.14B | $54.37M a day |
| 11 | $HYMC Hycroft Mining Holding Corp | $976.93M | $46.52M a day |
| 12 | $ALMS Alumis Inc. | $975.38M | $46.45M a day |
| 13 | $QMCO Quantum Corp /de/ | $925.57M | $44.07M a day |
| 14 | $CMPS COMPASS Pathways plc | $806.79M | $38.42M a day |
| 15 | $SDEV Stablecoin Development Corp | $767.37M | $36.54M a day |
| 16 | $DAIC CID Holdco, Inc. | $739.04M | $35.19M a day |
| 17 | $APUS Apimeds Pharmaceuticals US, Inc. | $716.82M | $34.13M a day |
| 18 | $PDSB PDS Biotechnology Corp Why it moved | $709.28M | $33.78M a day |
| 19 | $FEIM Frequency Electronics Inc | $664.75M | $31.65M a day |
| 20 | $SUNE SUNation Energy, Inc. | $653.48M | $31.12M a day |
| 21 | $WHLR Wheeler Real Estate Investment Trust, Inc. | $633.97M | $30.19M a day |
| 22 | $IRD Opus Genetics, Inc. | $591.57M | $28.17M a day |
| 23 | $SATL Satellogic Inc. | $590.78M | $28.13M a day |
| 24 | $SRZN Surrozen, Inc./DE | $578.38M | $27.54M a day |
| 25 | $TRUG TruGolf Holdings, Inc. | $557.87M | $26.57M a day |
Biggest one-day volume spike
BIO-key International ($BKYI) traded 169.6 million shares on September 29, about 11,300 times its median of the previous 20 sessions, and closed up 85.7%. Veea ($VEEA) on September 15 and Decoy Therapeutics ($DCOY) on September 22 had the next biggest spikes.
| # | Stock | vs 20-day median | Day |
|---|---|---|---|
| 1 | $BKYI BIO KEY International Inc Why it moved | 11,262× | Sep 29, 2026 · close +85.7% |
| 2 | $VEEA Veea Inc. Why it moved | 6,373× | Sep 15, 2026 · close +149.3% |
| 3 | $DCOY Decoy Therapeutics Inc. | 4,073× | Sep 22, 2026 · close +21.1% |
| 4 | $QNME Quanome Technologies, Inc. | 3,319× | Sep 18, 2026 · close +92.3% |
| 5 | $SLND Southland Holdings, Inc. | 3,223× | Sep 29, 2026 · close +13.1% |
| 6 | $SSM Sono Group N.V. | 3,002× | Sep 1, 2026 · close +77.4% |
| 7 | $BFRG BullFrog AI Holdings, Inc. | 2,186× | Sep 23, 2026 · close +58.3% |
| 8 | $AIFF Firefly Neuroscience, Inc. | 1,776× | Sep 25, 2026 · close +68.9% |
| 9 | $CLRO Clearone Inc | 1,715× | Sep 28, 2026 · close +47.8% |
| 10 | $VTGN Vistagen Therapeutics, Inc. | 1,605× | Sep 23, 2026 · close +46.5% |
| 11 | $APUS Apimeds Pharmaceuticals US, Inc. | 1,519× | Sep 24, 2026 · close +114.8% |
| 12 | $MEDS DataMeds AI, Inc. | 1,420× | Sep 16, 2026 · close +274.7% |
| 13 | $FTFT Future FinTech Group Inc. | 1,361× | Sep 9, 2026 · close +59.5% |
| 14 | $CMCT Creative Media & Community Trust Corp | 1,329× | Sep 30, 2026 · close +52.6% |
| 15 | $BIAF bioAffinity Technologies, Inc. | 1,295× | Sep 1, 2026 · close +44.5% |
| 16 | $SUNE SUNation Energy, Inc. | 1,247× | Sep 9, 2026 · close +90.3% |
| 17 | $QCLS Q/c Technologies, Inc. | 1,130× | Sep 16, 2026 · close +118.5% |
| 18 | $OLB OLB Group, Inc. Why it moved | 1,007× | Sep 9, 2026 · close +22.6% |
| 19 | $ZEO Zeo Energy Corp. | 908× | Sep 22, 2026 · close +57.0% |
| 20 | $REFR Research Frontiers Inc | 884× | Sep 18, 2026 · close +68.5% |
| 21 | $GCTK Glucotrack, Inc. | 836× | Sep 24, 2026 · close +27.1% |
| 22 | $FTHM Fathom Holdings Inc. | 813× | Sep 25, 2026 · close +12.3% |
| 23 | $ARAY Accuray Inc | 789× | Sep 28, 2026 · close +39.4% |
| 24 | $TNON Tenon Medical, Inc. | 788× | Sep 10, 2026 · close +117.2% |
| 25 | $SDST Stardust Power Inc. | 785× | Sep 17, 2026 · close +57.6% |
Biggest volume increase
OpenWorld ($OPNW) averaged $9.48 million of trading a day in September against $37,720 a day over the three months before, a 251-fold increase. DataMeds AI (177×) and Veea (140×) were next. Veea is in five of this month's top-10 lists.
| # | Stock | vs prior 3 months | Average daily |
|---|---|---|---|
| 1 | $OPNW OpenWorld, Inc. | 251× | $9.48M vs $37.7K a day |
| 2 | $MEDS DataMeds AI, Inc. | 177× | $71.59M vs $405.4K a day |
| 3 | $VEEA Veea Inc. Why it moved | 140× | $67.42M vs $482.4K a day |
| 4 | $TCRT Alaunos Therapeutics, Inc. Why it moved | 105× | $3.14M vs $30.0K a day |
| 5 | $BFRG BullFrog AI Holdings, Inc. | 103× | $10.98M vs $107.1K a day |
| 6 | $IPDN Professional Diversity Network, Inc. | 101× | $14.20M vs $140.2K a day |
| 7 | $APUS Apimeds Pharmaceuticals US, Inc. | 97.7× | $34.13M vs $349.4K a day |
| 8 | $FTFT Future FinTech Group Inc. | 97.6× | $76.16M vs $780.0K a day |
| 9 | $MGLD Marygold Companies, Inc. | 94.8× | $1.79M vs $18.9K a day |
| 10 | $REFR Research Frontiers Inc | 79.1× | $3.18M vs $40.2K a day |
| 11 | $OLB OLB Group, Inc. Why it moved | 59.7× | $6.07M vs $101.6K a day |
| 12 | $PDSB PDS Biotechnology Corp Why it moved | 59.2× | $33.78M vs $571.0K a day |
| 13 | $AIFF Firefly Neuroscience, Inc. | 56.4× | $15.13M vs $268.4K a day |
| 14 | $BIAF bioAffinity Technologies, Inc. | 51.6× | $85.79M vs $1.66M a day |
| 15 | $FLYE Fly-E Group, Inc. Why it moved | 47.8× | $9.12M vs $190.7K a day |
| 16 | $MNOV Medicinova Inc | 38.2× | $2.56M vs $67.0K a day |
| 17 | $CMCT Creative Media & Community Trust Corp | 37.0× | $4.60M vs $124.4K a day |
| 18 | $ZEO Zeo Energy Corp. | 35.0× | $13.85M vs $395.7K a day |
| 19 | $TPST Tempest Therapeutics, Inc. | 35.0× | $7.97M vs $227.8K a day |
| 20 | $SDEV Stablecoin Development Corp | 30.0× | $36.54M vs $1.22M a day |
| 21 | $AENT Alliance Entertainment Holding Corp | 27.4× | $2.79M vs $102.1K a day |
| 22 | $GRNQ Greenpro Capital Corp. | 25.8× | $1.97M vs $76.5K a day |
| 23 | $SSM Sono Group N.V. | 25.3× | $11.66M vs $461.4K a day |
| 24 | $BNGO Bionano Genomics, Inc. | 25.0× | $3.95M vs $158.3K a day |
| 25 | $PAAI Paradium.AI, Inc. | 23.5× | $10.79M vs $459.9K a day |
Widest trading range
DataMeds AI ($MEDS) traded between $0.8501 on September 10 and $12.31 on September 16, a range of 1,348%: the high was 14.5 times the low. Future FinTech ($FTFT, 699%) and ONE Nuclear Energy ($ONEN, 534%) had the next widest ranges.
| # | Stock | High vs low | Low to high |
|---|---|---|---|
| 1 | $MEDS DataMeds AI, Inc. | +1348.1% | $0.8501 to $12.31 |
| 2 | $FTFT Future FinTech Group Inc. | +698.6% | $1.22 to $9.74 |
| 3 | $ONEN ONE Nuclear Energy Inc. | +534.2% | $1.90 to $12.05 |
| 4 | $APUS Apimeds Pharmaceuticals US, Inc. | +505.3% | $1.51 to $9.14 |
| 5 | $VEEA Veea Inc. Why it moved | +480.5% | $1.53 to $8.88 |
| 6 | $FRGT Freight Technologies, Inc. | +472.1% | $0.2412 to $1.38 |
| 7 | $HLSQ Tessera Defense & Homeland Security Inc. | +467.8% | $0.38 to $2.16 |
| 8 | $QCLS Q/c Technologies, Inc. | +454.6% | $0.4201 to $2.33 |
| 9 | $FCUV Focus Universal Inc. | +454.2% | $4.15 to $23.00 |
| 10 | $GIPR Generation Income Properties, Inc. | +440.6% | $0.32 to $1.73 |
| 11 | $PDSB PDS Biotechnology Corp Why it moved | +437.5% | $0.1972 to $1.06 |
| 12 | $QNME Quanome Technologies, Inc. | +435.2% | $0.2616 to $1.40 |
| 13 | $WHLR Wheeler Real Estate Investment Trust, Inc. | +427.9% | $1.65 to $8.71 |
| 14 | $SSM Sono Group N.V. | +414.3% | $1.05 to $5.40 |
| 15 | $LEXX Lexaria Bioscience Corp. | +413.2% | $2.80 to $14.37 |
| 16 | $SDEV Stablecoin Development Corp | +403.3% | $0.7809 to $3.93 |
| 17 | $NCPL Netcapital Inc. | +386.3% | $0.3825 to $1.86 |
| 18 | $HCTI Healthcare Triangle, Inc. | +384.6% | $0.65 to $3.15 |
| 19 | $XXII 22nd Century Group, Inc. | +384.0% | $0.7852 to $3.80 |
| 20 | $ARTL Artelo Biosciences, Inc. | +355.9% | $3.45 to $15.73 |
| 21 | $TNON Tenon Medical, Inc. | +351.7% | $2.40 to $10.84 |
| 22 | $PAAI Paradium.AI, Inc. | +323.1% | $0.8201 to $3.47 |
| 23 | $VWAV VisionWave Holdings, Inc. | +315.4% | $3.90 to $16.20 |
| 24 | $BIAF bioAffinity Technologies, Inc. | +298.2% | $5.11 to $20.35 |
| 25 | $DCOY Decoy Therapeutics Inc. | +297.4% | $1.92 to $7.61 |
Spike and fade
ONE Nuclear Energy ($ONEN) reached $12.05 on September 8, 52.7% above its August close, then finished the month at $2.15, 82.2% below that high. Focus Universal ($FCUV) and Tessera Defense & Homeland Security ($HLSQ) gave back 82.0% and 81.4%. DataMeds AI still ended up 229.2% for the month, but 74.2% below its September 16 high.
| # | Stock | Off the high | Detail |
|---|---|---|---|
| 1 | $ONEN ONE Nuclear Energy Inc. | −82.2% | peak +52.7% (Sep 8, 2026) · period −72.8% |
| 2 | $FCUV Focus Universal Inc. | −82.0% | peak +133.5% (Sep 4, 2026) · period −57.9% |
| 3 | $HLSQ Tessera Defense & Homeland Security Inc. | −81.4% | peak +57.4% (Sep 10, 2026) · period −70.8% |
| 4 | $SSM Sono Group N.V. | −79.3% | peak +101.5% (Sep 2, 2026) · period −58.2% |
| 5 | $HCTI Healthcare Triangle, Inc. | −77.2% | peak +281.8% (Sep 23, 2026) · period −13.0% |
| 6 | $GIPR Generation Income Properties, Inc. | −76.9% | peak +365.2% (Sep 18, 2026) · period +7.3% |
| 7 | $VEEA Veea Inc. Why it moved | −75.6% | peak +393.3% (Sep 17, 2026) · period +20.6% |
| 8 | $ARTL Artelo Biosciences, Inc. | −74.3% | peak +147.3% (Sep 23, 2026) · period −36.5% |
| 9 | $MEDS DataMeds AI, Inc. | −74.2% | peak +1178.3% (Sep 16, 2026) · period +229.2% |
| 10 | $DCOY Decoy Therapeutics Inc. | −74.1% | peak +149.5% (Sep 22, 2026) · period −35.4% |
| 11 | $IPW iPower Inc. | −72.2% | peak +113.3% (Sep 15, 2026) · period −40.8% |
| 12 | $TRUG TruGolf Holdings, Inc. | −68.4% | peak +99.6% (Sep 15, 2026) · period −36.9% |
| 13 | $TGL Treasure Global Inc | −68.4% | peak +75.0% (Sep 16, 2026) · period −44.7% |
| 14 | $BIAF bioAffinity Technologies, Inc. | −67.8% | peak +346.3% (Sep 4, 2026) · period +43.9% |
| 15 | $HOST Host Digital Inc. | −67.7% | peak +75.0% (Sep 17, 2026) · period −43.5% |
| 16 | $GRNQ Greenpro Capital Corp. | −67.0% | peak +63.3% (Sep 8, 2026) · period −46.0% |
| 17 | $SGLY Singularity Future Technology Ltd. | −65.5% | peak +63.2% (Sep 10, 2026) · period −43.7% |
| 18 | $FTFT Future FinTech Group Inc. | −65.1% | peak +399.6% (Sep 16, 2026) · period +74.4% |
| 19 | $PAAI Paradium.AI, Inc. | −64.0% | peak +257.7% (Sep 17, 2026) · period +28.9% |
| 20 | $DAIC CID Holdco, Inc. | −62.5% | peak +105.4% (Sep 17, 2026) · period −23.0% |
| 21 | $TNON Tenon Medical, Inc. | −62.3% | peak +139.3% (Sep 11, 2026) · period −9.7% |
| 22 | $QNME Quanome Technologies, Inc. | −62.0% | peak +314.2% (Sep 22, 2026) · period +57.4% |
| 23 | $MNOV Medicinova Inc | −57.1% | peak +171.8% (Sep 17, 2026) · period +16.7% |
| 24 | $KPLT Katapult Holdings, Inc. | −54.4% | peak +77.3% (Sep 8, 2026) · period −19.2% |
| 25 | $ZEO Zeo Energy Corp. | −54.2% | peak +206.8% (Sep 22, 2026) · period +40.6% |
How these are built. Regular-session daily bars for 1,258 Nasdaq and NYSE American micro-caps with a ticker page here, split-adjusted, through the September 30, 2026 close. No real-time prices: every figure comes from completed sessions.
- Gains and losses run from the last close before Sep 1, 2026 to the last close of the period. A +20% day is a close at least 20% above the previous close.
- A stock is ranked if it traded on at least 15 of the period’s 21 sessions (1 didn’t).
- Volume spike: the day’s share volume against the median of the 20 sessions before it. The day must trade at least $1.00M and the median at least $25.0K a day.
- Volume increase: average daily dollar volume in the period against Jun 1, 2026 to the day before the period. Needs at least $1.00M a day in the period and 40 sessions before it.
- Spike and fade: the period’s high must be at least 50% above the prior close. Ranked by the fall from that high to the last close.
- Ranges use each session’s high and low.
Left out (4). A one-day close move of +300% or more, or -75% or less, can be a share split the price history doesn’t reflect, so these stocks are left out of every ranking for the period: $AEMD (+374% on Sep 17, 2026), $BENF (+439% on Sep 23, 2026), $JAGX (+1191% on Sep 22, 2026), $XHLD (-92% on Sep 28, 2026).
Data: Alpaca Markets (SIP), daily bars, split-adjusted. A record of past price moves from exchange data, not a list of stocks to buy or sell.
Facts as of . Small caps move fast; check the latest filings.
The daily movers email
The biggest micro-cap moves and what's behind them, from the filings. Free.