best performing mid stocks last month

Kodiak Sciences (KOD) had the highest return last month by a mid-cap US stock, returning 156.1%.

ASSETMONTH% RETURN
Kodiak Sciences (KOD)
September 2026
156.15%
Iovance Biotherapeutics (IOVA)
September 2026
84.79%
GRAIL, LLC (GRAL)
September 2026
77.37%
MaxLinear (MXL)
September 2026
54.46%
Cohu (COHU)
September 2026
51.59%
FormFactor (FORM)
September 2026
50.41%
10X Genomics (TXG)
September 2026
46.24%
Solaris Energy Infrastructure (SEI)
September 2026
44.08%
Twist Bioscience (TWST)
September 2026
43.2%
AXT (AXTI)
September 2026
33.4%
Cosan SA ADR (CSAN)
September 2026
32.89%
CareDx (CDNA)
September 2026
30.18%
Abcellera Biologics  (ABCL)
September 2026
29.8%
ChipMOS Technologies (IMOS)
September 2026
28.16%
Aehr Test Systems (AEHR)
September 2026
27.88%
Signet Jewelers (SIG)
September 2026
26.52%
Precigen (PGEN)
September 2026
25.7%
Strive (ASST)
September 2026
25.36%
Rogers (ROG)
September 2026
23.93%
Torm PLC Class A (TRMD)
September 2026
23.67%
Recursion Pharmaceuticals (RXRX)
September 2026
23.65%
Hafnia (HAFN)
September 2026
22.99%
Veradermics (MANE)
September 2026
22.96%
Ultra Clean (UCTT)
September 2026
21.38%
VEON (VEON)
September 2026
20.86%
Mid-cap stocks are treated as having a market cap between $2B and $10B.