worst performing us large cap stocks in may 2026

Ubiquiti Networks (UI) had the lowest return in May 2026 by a large-cap US stock, returning -42.9%.

ASSETMONTH% RETURN
Ubiquiti Networks (UI)
May 2026
-42.85%
Zoetis (ZTS)
May 2026
-33.15%
Futu (FUTU)
May 2026
-33.04%
Symbotic (SYM)
May 2026
-21.88%
Insmed (INSM)
May 2026
-21.19%
Advanced Energy Industries (AEIS)
May 2026
-21.19%
AutoZone (AZO)
May 2026
-21.1%
LPL Financial (LPLA)
May 2026
-17.98%
Cheniere Energy (LNG)
May 2026
-17.8%
Coupang LLC (CPNG)
May 2026
-17.74%
Trimble (TRMB)
May 2026
-17.73%
Medline Inc Class A Common Stock (MDLN)
May 2026
-17.73%
Companhia de Saneamento Basico do Estado de Sao Paulo SABESP ADR (SBS)
May 2026
-17.71%
Intuit (INTU)
May 2026
-17.57%
Gfl Environmental (GFL)
May 2026
-17.25%
AXIA Energia (AXIA)
May 2026
-17.12%
Insulet (PODD)
May 2026
-16.79%
Dow (DOW)
May 2026
-16.72%
Boston Scientific (BSX)
May 2026
-16.61%
JBS (JBS)
May 2026
-16.39%
Watsco (WSO)
May 2026
-16.16%
Coca-Cola Consolidated (COKE)
May 2026
-15.9%
PDD (PDD)
May 2026
-15.4%
Li Auto  (LI)
May 2026
-15.3%
Huntington Ingalls Industries (HII)
May 2026
-15.26%
Large-cap stocks are treated as having a market cap of $10B+.