Almonty Industries Inc Common Shares (ALM) had the highest return in Q1 2025 by a mid-cap US stock, returning 145.3%.

ASSET	QUARTER	% RETURN
Almonty Industries Inc Common Shares (ALM)	Q1 2025	145.31%
Corcept Therapeutics (CORT)	Q1 2025	125.64%
China Yuchai International (CYD)	Q1 2025	80.17%
IHS (IHS)	Q1 2025	78.77%
DRDGOLD Limited ADR (DRD)	Q1 2025	77.24%
Harmony Gold Mining (HMY)	Q1 2025	75.42%
VNET Group Inc DRC (VNET)	Q1 2025	72.27%
Orla Mining (ORLA)	Q1 2025	66.37%
Aura Minerals Inc Common Shares (AUGO)	Q1 2025	64.78%
Alignment Healthcare LLC (ALHC)	Q1 2025	64.49%
Soleno Therapeutics (SLNO)	Q1 2025	59.49%
Acm Research (ACMR)	Q1 2025	53.45%
TMC the metals (TMC)	Q1 2025	50.88%
Option Care Health (OPCH)	Q1 2025	50%
Astronics (ATRO)	Q1 2025	48.92%
Compass (COMP)	Q1 2025	47.97%
Hycroft Mining (HYMC)	Q1 2025	43.36%
GRAIL, LLC (GRAL)	Q1 2025	43.32%
SSR Mining (SSRM)	Q1 2025	42.47%
Tempus AI, Inc Class A Common Stock (TEM)	Q1 2025	42.34%
Kanzhun Ltd ADR (BZ)	Q1 2025	40.34%
Allied Gold (AAUC)	Q1 2025	39.59%
Fortuna Silver Mines (FSM)	Q1 2025	39.27%
Kingsoft Cloud Holdings (KC)	Q1 2025	36.63%
Life Time (LTH)	Q1 2025	36.34%

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