Xencor (XNCR) had the highest return on July 17 by a mid-cap US stock, returning 19%.

ASSET	DATE	% RETURN
Xencor (XNCR)	7/17/2026	19.01%
Oruka Therapeutics (ORKA)	7/17/2026	13.51%
Cohen & Steers (CNS)	7/17/2026	13.26%
MBX Biosciences, Inc Common Stock (MBX)	7/17/2026	12.5%
Dianthus Therapeutics (DNTH)	7/17/2026	12.39%
Biohaven (BHVN)	7/17/2026	12.37%
nLIGHT (LASR)	7/17/2026	11.16%
Vicor (VICR)	7/17/2026	10.46%
Iovance Biotherapeutics (IOVA)	7/17/2026	10.13%
Ouster, Inc Common Stock (OUST)	7/17/2026	9.01%
Centrus Energy (LEU)	7/17/2026	8.35%
Viavi Solutions (VIAV)	7/17/2026	7.86%
Septerna, Inc Common Stock (SEPN)	7/17/2026	7.81%
MiniMed Group, Inc Common Stock (MMED)	7/17/2026	7.77%
Regencell Bioscience (RGC)	7/17/2026	7.73%
Vishay Intertechnology (VSH)	7/17/2026	7.72%
Almonty Industries Inc Common Shares (ALM)	7/17/2026	7.58%
Pulse Biosciences (PLSE)	7/17/2026	7.42%
Lemonade (LMND)	7/17/2026	7.26%
Protagonist Therapeutics (PTGX)	7/17/2026	7.26%
Palvella Therapeutics (PVLA)	7/17/2026	7.25%
Ultra Clean (UCTT)	7/17/2026	7.19%
Liquidia Technologies (LQDA)	7/17/2026	7.19%
Dyne Therapeutics (DYN)	7/17/2026	7.13%
Abcellera Biologics (ABCL)	7/17/2026	7.04%

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