Lumen Technologies (LUMN) had the highest return in Q3 2024 by a mid-cap US stock, returning 576.2%.

ASSET	QUARTER	% RETURN
Lumen Technologies (LUMN)	Q3 2024	576.19%
Clover Health Investments (CLOV)	Q3 2024	131.15%
Polestar Automotive Holding UK PLC Class C-1 ADS (ADW) (PSNYW)	Q3 2024	123.88%
Ast Spacemobile (ASTS)	Q3 2024	120.68%
GDS (GDS)	Q3 2024	117.25%
Polestar Automotive Holding UK PLC Class A ADS (PSNY)	Q3 2024	115%
PureCycle Technologies (PCTTW)	Q3 2024	105.48%
Verona Pharma PLC ADR (VRNA)	Q3 2024	100.49%
American Healthcare REIT (AHR)	Q3 2024	80.17%
Clear Secure (YOU)	Q3 2024	77.8%
ADMA Biologics (ADMA)	Q3 2024	77.69%
Perimeter Solutions (PRM)	Q3 2024	71.56%
Compass (COMP)	Q3 2024	69.72%
Upstart Holdings (UPST)	Q3 2024	69.32%
Zeta Global (ZETA)	Q3 2024	68.53%
EXACT Sciences (EXAS)	Q3 2024	61.38%
Purecycle Technologies (PCT)	Q3 2024	60.2%
Kymera Therapeutics (KYMR)	Q3 2024	58.45%
Inspire Medical Systems (INSP)	Q3 2024	58.4%
Veracyte (VCYT)	Q3 2024	57.67%
Goosehead Insurance (GSHD)	Q3 2024	55.98%
Revolve Group LLC (RVLV)	Q3 2024	55.46%
ICU Medical (ICUI)	Q3 2024	53.77%
Nio Inc Class A ADR (NIO)	Q3 2024	53.56%
Powell Industries (POWL)	Q3 2024	52.99%

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