worst performing mid cap stocks in september 2026

Liquidia Technologies (LQDA) had the lowest return in September 2026 by a mid-cap US stock, returning -55.3%.

ASSETMONTH% RETURN
Liquidia Technologies (LQDA)
September 2026
-55.3%
Xenon Pharmaceuticals (XENE)
September 2026
-38.51%
Dyne Therapeutics  (DYN)
September 2026
-35.53%
ServiceTitan, Inc Class A Common Stock (TTAN)
September 2026
-32.31%
Uipath (PATH)
September 2026
-30.18%
ACADIA Pharmaceuticals (ACAD)
September 2026
-30.13%
Avis Budget (CAR)
September 2026
-27.32%
Navan, Inc Class A Common Stock (NAVN)
September 2026
-26.45%
Enova International (ENVA)
September 2026
-26.22%
Ionis Pharmaceuticals (IONS)
September 2026
-26.04%
Braze (BRZE)
September 2026
-25.75%
Webull (BULL)
September 2026
-25.13%
Almonty Industries Inc Common Shares (ALM)
September 2026
-23.64%
MGM Resorts International (MGM)
September 2026
-23.62%
Lamb Weston (LW)
September 2026
-23.32%
Chewy (CHWY)
September 2026
-22.91%
Versant Media (VSNT)
September 2026
-22.78%
NGL Energy Partners (NGL)
September 2026
-22.42%
Comstock Resources (CRK)
September 2026
-22.12%
Klaviyo (KVYO)
September 2026
-21.51%
AutoNation (AN)
September 2026
-21.43%
Zillow (ZG)
September 2026
-21.31%
Immunome  (IMNM)
September 2026
-21.01%
Enliven Therapeutics (ELVN)
September 2026
-20.95%
H&R Block (HRB)
September 2026
-20.77%
Mid-cap stocks are treated as having a market cap between $2B and $10B.