PureCycle Technologies (PCTTW) had the highest return in September 2024 by a mid-cap US stock, returning 106.9%.

ASSET	MONTH	% RETURN
PureCycle Technologies (PCTTW)	September 2024	106.9%
Nio Inc Class A ADR (NIO)	September 2024	67.84%
Bilibili (BILI)	September 2024	62.59%
Purecycle Technologies (PCT)	September 2024	58.33%
Lufax (LU)	September 2024	55.8%
Melco Resorts & Entertainment (MLCO)	September 2024	53.65%
TAL Education (TAL)	September 2024	48%
ZIM Integrated Shipping Services (ZIM)	September 2024	43.91%
Wave Life Sciences (WVE)	September 2024	43.61%
Nuscale Power (SMR)	September 2024	43.49%
Edgewise Therapeutics (EWTX)	September 2024	42.35%
Kanzhun Ltd ADR (BZ)	September 2024	40.91%
Atour Lifestyle Holdings Limited American Depositary Shares (ATAT)	September 2024	39.64%
ZEEKR Intelligent Technology (ZK)	September 2024	39.31%
Bausch Health Companies (BHC)	September 2024	38.78%
Oklo (OKLO)	September 2024	38.77%
MP Materials (MP)	September 2024	38%
Lumen Technologies (LUMN)	September 2024	36.8%
Weibo (WB)	September 2024	36.59%
Polestar Automotive Holding UK PLC Class A ADS (PSNY)	September 2024	35.43%
EchoStar (SATS)	September 2024	35.26%
Powell Industries (POWL)	September 2024	34.44%
Wayfair (W)	September 2024	34.37%
GeneDx (WGS)	September 2024	33.84%
RH (RH)	September 2024	33.81%

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