best performing small cap stocks in a week in september

Uniqure (QURE) had the best week in September 2025 by a small-cap US stock the week of September 22, 2025, returning 290.7%.

ASSETWEEK% RETURN
Uniqure (QURE)
9/22/2025 - 9/28/2025
290.72%
PepGen (PEPG)
9/22/2025 - 9/28/2025
172.58%
NovaBay Pharmaceuticals (NBY)
9/1/2025 - 9/7/2025
104.95%
Lithium Americas (LAC)
9/22/2025 - 9/28/2025
95.98%
Clearpoint Neuro (CLPT)
9/22/2025 - 9/28/2025
93.1%
Strive Asset Management (ASST)
9/8/2025 - 9/14/2025
84.97%
Mercurity Fintech Holding Inc ADR (MFH)
9/22/2025 - 9/28/2025
81.9%
Bakkt (BKKT)
9/29/2025 - 10/5/2025
76.64%
New Fortress Energy LLC (NFE)
9/15/2025 - 9/21/2025
73.33%
Bitfarms (BITF)
9/8/2025 - 9/14/2025
72.87%
Vimeo (VMEO)
9/8/2025 - 9/14/2025
71.56%
Enanta Pharmaceuticals (ENTA)
9/29/2025 - 10/5/2025
67.41%
Etoiles Capital Group Co, Ltd Class A Ordinary Shares (EFTY)
9/22/2025 - 9/28/2025
66.41%
FuelCell Energy (FCEL)
9/8/2025 - 9/14/2025
65.54%
Better Home & Finance (BETR)
9/22/2025 - 9/28/2025
59.51%
Waton Financial Limited Ordinary Shares (WTF)
9/8/2025 - 9/14/2025
59.35%
Wolfspeed (WOLF)
9/29/2025 - 10/5/2025
58.89%
Kodiak Sciences (KOD)
9/22/2025 - 9/28/2025
58%
Rezolve AI Limited Ordinary Shares (RZLV)
9/8/2025 - 9/14/2025
57.21%
Immuneering (IMRX)
9/8/2025 - 9/14/2025
53.53%
Falcon's Beyond Global, Inc Class A Common Stock (FBYD)
9/8/2025 - 9/14/2025
52.78%
Falcon's Beyond Global, Inc Class A Common Stock (FBYD)
9/15/2025 - 9/21/2025
50.96%
WEBTOON Entertainment Inc Common stock (WBTN)
9/15/2025 - 9/21/2025
49.02%
QuantaSing Group Limited American Depositary Shares (QSG)
9/8/2025 - 9/14/2025
48.85%
Here (HERE)
9/8/2025 - 9/14/2025
48.85%
Small-cap stocks are treated as having a market cap between $300M and $2B.