Quantum (QMCO) had the best year in 1999 by a US stock in 1999, returning 13,126.2%.

ASSET	YEAR	% RETURN
Quantum (QMCO)	1999	13,126.21%
Qualcomm (QCOM)	1999	2,587%
Empire Petroleum (EP)	1999	5,660.57%
SWK (SWKH)	1999	12,396.79%
Flexible Solutions International (FSI)	1999	1,868.63%