Amid the AI trade and ongoing geopolitical tensions, several US-listed stocks have come under pressure in 2026. Here are the top 10 stocks with market capitalisations above $5 billion that have fallen between 49% and 66% year to date, according to Vested Finance data.
The Trade Desk has emerged as the biggest loser on this list, with shares plunging 65.75% in 2026, from $37.96 at the end of last year to $13.00. The digital advertising technology company now has a market capitalisation of $6.1 billion.
Flutter Entertainment has fallen 62.76% in 2026, with shares plunging from $215.04 at the end of last year to $80.09. The global sports betting and gaming company now has a market capitalisation of $13.9 billion.
Stellantis has shed 62.72% in 2026, with shares sliding from $10.89 at the end of last year to $4.06. The automaker, which owns brands such as Jeep, Fiat and Peugeot, now has a market capitalisation of $10.6 billion.
AppLovin has plunged 61.38% in 2026, with shares tumbling from $673.82 at the end of last year to $260.25. The advertising technology company still commands a market capitalisation of $87.1 billion.