Castellum (CTM) had the lowest return between 2010 and 2015 by a US stock, returning -100%.

ASSET	YEARS	% RETURN
Castellum (CTM)	2010-2015	-100%
Stellantis (STLA)	2010-2015	-100%
Protagenic Therapeutics (PTIX)	2010-2015	-99.99%
Atlas Lithium Corporation Common Stock (ATLX)	2010-2015	-99.99%
SRXH (SRXH)	2010-2015	-99.99%
Helport AI Limited Ordinary Shares (HPAI)	2010-2015	-99.99%
Apptech (APCX)	2010-2015	-99.99%
Better Choice (BTTR)	2010-2015	-99.98%
Fubotv (FUBO)	2010-2015	-99.96%
Dominari (DOMH)	2010-2015	-99.94%
Quantum Computing (QUBT)	2010-2015	-99.92%
Cellectar Biosciences (CLRB)	2010-2015	-99.91%
Centrus Energy (LEU)	2010-2015	-99.88%
Comstock Mining (LODE)	2010-2015	-99.86%
BTCS (BTCS)	2010-2015	-99.81%
Ontrak (OTRK)	2010-2015	-99.8%
Metalla Royalty & Streaming (MTA)	2010-2015	-99.79%
Gevo (GEVO)	2010-2015	-99.73%
Blink Charging (BLNK)	2010-2015	-99.73%
Immunoprecise Antibodies (IPA)	2010-2015	-99.73%
AYRO (AYRO)	2010-2015	-99.68%
IZEA (IZEA)	2010-2015	-99.62%
Osisko Development (ODV)	2010-2015	-99.6%
Kaival Brands Innovations (KAVL)	2010-2015	-99.58%
ABVC BioPharma (ABVC)	2010-2015	-99.52%