Algorhythm (RIME) had the best month in 1997 by a US stock in December 1997, returning 697.4%.

ASSET	MONTH	% RETURN
Algorhythm (RIME)	December 1997	697.45%
Universal Insurance (UVE)	February 1997	483.27%
Portage Biotech (PRTG)	August 1997	400%
Milestone Scientific (MLSS)	September 1997	298.25%
Newtek Business Services (NEWT)	October 1997	213.03%
Hallador Energy (HNRG)	January 1997	175.01%
Hallador Energy (HNRG)	July 1997	157.15%
Idaho Strategic Resources (IDR)	April 1997	156%
Odyssey Marine Exploration (OMEX)	January 1997	150%
Kingstone Companies (KINS)	September 1997	149.99%
Pure Cycle (PCYO)	January 1997	143.06%
DSS (DSS)	June 1997	140%
Franklin Wireless (FKWL)	January 1997	134.29%
Cps Technologies (CPSH)	August 1997	130%
Empire Petroleum (EP)	September 1997	128.57%
CEL-SCI (CVM)	September 1997	127.45%
Idaho Strategic Resources (IDR)	June 1997	118.75%
Sanara Medtech (SMTI)	January 1997	118.18%
Safehold (SAFE)	January 1997	114.8%
CASI Pharmaceuticals (CASI)	November 1997	114.04%
Tat Techno (TATT)	January 1997	108.02%
LifeMD (LFMD)	June 1997	107.68%
Deswell Industries (DSWL)	January 1997	105.33%
BIO-Key International (BKYI)	July 1997	104.35%
Sypris Solutions (SYPR)	September 1997	101.68%