Axsome Therapeutics (AXSM) had the highest return in January 2019 by a US stock with a market cap of $2B+, returning 198.6%.

ASSET	MONTH	% RETURN
Axsome Therapeutics (AXSM)	January 2019	198.58%
Insmed (INSM)	January 2019	86.57%
Enphase Energy (ENPH)	January 2019	56.16%
Griffon (GFF)	January 2019	56.13%
Novocure (NVCR)	January 2019	50.77%
Roku (ROKU)	January 2019	50.74%
Veracyte (VCYT)	January 2019	48.98%
Centrais Electricas Brasileiras (EBR)	January 2019	48.76%
Herc (HRI)	January 2019	47.9%
EXACT Sciences (EXAS)	January 2019	45.57%
Vipshop (VIPS)	January 2019	44.55%
Cleveland-Cliffs (CLF)	January 2019	43.91%
ACADIA Pharmaceuticals (ACAD)	January 2019	43.81%
Companhia de Saneamento Basico do Estado de Sao Paulo SABESP ADR (SBS)	January 2019	43.81%
Boot Barn (BOOT)	January 2019	43.39%
Light & Wonder (LNW)	January 2019	43.28%
Centrais Elétricas Brasileiras SA - Eletrobrás (EBR.B)	January 2019	43.04%
New Oriental Education & Technology (EDU)	January 2019	43.04%
Century Communities (CCS)	January 2019	38.24%
Patrick Industries (PATK)	January 2019	37.82%
Modine Manufacturing (MOD)	January 2019	37.63%
Hess (HES)	January 2019	37.44%
Construction Partners (ROAD)	January 2019	37.4%
Blueprint Medicines (BPMC)	January 2019	36.64%
Carpenter Technology (CRS)	January 2019	36.43%