Mentioned as experiencing its worst day of the year due to market reactions.

The index fell by 1.2% due to tariffs.

The index is mentioned as experiencing a recent decline due to economic concerns.

The stock market index fell 1.4% in February, but has the potential for recovery in March.

The S&P 500 lost 135 points today.

The S&P 500 is currently on a losing streak.

The S&P 500 fell to its lowest level amid fears of a new trade war initiated by Trump.