Kingsoft Cloud Holdings (KC) had the highest return in March 2023 by a mid-cap US stock or mid-cap US stock, returning 120.6%.

ASSET	MONTH	% RETURN
Kingsoft Cloud Holdings (KC)	March 2023	120.6%
Riot Blockchain (RIOT)	March 2023	56.58%
Viking Therapeutics (VKTX)	March 2023	51.23%
Cipher Mining (CIFR)	March 2023	45.63%
Lifestance Health (LFST)	March 2023	44.83%
Terawulf (WULF)	March 2023	44.62%
Asana (ASAN)	March 2023	42.29%
Protagonist Therapeutics (PTGX)	March 2023	41.8%
RLX Technology (RLX)	March 2023	38.42%
Duolingo (DUOL)	March 2023	38.29%
Vertex (VERX)	March 2023	31.95%
DRDGOLD Limited ADR (DRD)	March 2023	31.73%
Endeavour Silver (EXK)	March 2023	31.53%
Renew Energy Global (RNW)	March 2023	30.09%
Perpetua Resources (PPTA)	March 2023	26.42%
Brookfield Renewable (BEPC)	March 2023	25.72%
Eos Energy Enterprises (EOSE)	March 2023	24.76%
Blackbaud (BLKB)	March 2023	24.53%
DigitalOcean (DOCN)	March 2023	22.87%
Rumble (RUM)	March 2023	22.7%
Opendoor Technologies (OPEN)	March 2023	22.22%
GameStop (GME)	March 2023	21.67%
Stevanato Group SpA (STVN)	March 2023	20.46%
Osisko Gold Ro (OR)	March 2023	19.89%
Aurinia Pharmaceuticals (AUPH)	March 2023	19.65%

Mid-cap stocks are treated as having a market cap between $2B and $10B.