Stocks posted their first weekly losses in three weeks on Friday as concerns about the sky-high valuations of artificial intelligence companies prompted investors to pull back.

The Nasdaq Composite, which closely tracks the biggest technology companies, recorded a drop of 3% this week, its worst since the global market sell-off in April fueled by the rollout of President Donald Trump’s "Liberation Day" tariff policies.

The S&P 500 posted a loss of 1.6% this week. The broad-based index broke its streak of three weeks of gains.

Stocks sharply retreated from the lows of the day after Senate Democrats offered a new plan to end the government shutdown . The Dow Jones Industrial Average and the S&P finished slightly positive for the day, while the Nasdaq closed down.

For the year, the Nasd

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