Avadel Pharmaceuticals (AVDL) had the highest return in January 1998 by a small-cap US stock, returning 52.9%.

ASSET	MONTH	% RETURN
Avadel Pharmaceuticals (AVDL)	January 1998	52.94%
Spectrum Brands (SPB)	January 1998	51.61%
Geron (GERN)	January 1998	50.74%
Monarch Casino & Resort (MCRI)	January 1998	50%
Insperity (NSP)	January 1998	47.69%
Cass Information Systems (CASS)	January 1998	41.41%
Cohu (COHU)	January 1998	40.98%
LifeMD (LFMD)	January 1998	36.36%
Digi International (DGII)	January 1998	34.93%
Community West Bancshares (CWBC)	January 1998	31.58%
Mercantile Bank (MBWM)	January 1998	30.23%
Nu Skin Enterprises (NUS)	January 1998	28.82%
Newtek Business Services (NEWT)	January 1998	27.42%
USANA Health Sciences (USNA)	January 1998	25%
Nektar Therapeutics (NKTR)	January 1998	24.52%
Hovnanian Enterprises (HOV)	January 1998	23.28%
Ethan Allen Interiors (ETD)	January 1998	23.25%
Genesis Energy (GEL)	January 1998	23.06%
Dime Community Bancshares (DCOM)	January 1998	22.72%
Kopin (KOPN)	January 1998	21.9%
City (CHCO)	January 1998	21.65%
Interface (TILE)	January 1998	20.94%
Daktronics (DAKT)	January 1998	20.23%
Sonida Senior Living (SNDA)	January 1998	18.56%
Central Garden & Pet (CENT)	January 1998	17.14%

Small-cap stocks are treated as having a market cap between $300M and $2B.