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[AI Concept Stocks Pull Back, Wall Street Banks Demand Additional Collateral from Certain Hedge Funds] According to the Financial Times, AI concept stocks continue to pull back, and Wall Street banks are demanding additional collateral from certain hedge funds with concentrated positions and high leverage. The Nasdaq 100 Index has fallen 10% from its early June peak, while the Philadelphia Semiconductor Index has dropped approximately 25% since the end of June. Long-short strategy and multi-strategy hedge funds have recorded single-day drawdowns.