Stock market today: Dow drops 505 points as tech sell-off accelerates

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• US stocks fell as the tech sector sell-off accelerated, with Nasdaq 100 down nearly 5% from its peak.
• Rising interest rates over the past month have weighed down on stock prices.
• Boeing stock dropped over 3% after a plane crash in South Korea over the weekend.

US stocks declined on Monday as the tech sector's sell-off accelerated into year-end.

The Nasdaq 100 extended its mid-December decline to nearly 5% amid a rise in bond yields...