Klarna's $260M Volume Spike Surpasses 449th Market Rank as Shares Rally 9.43%
On October 2, 2025, KlarnaKLAR-- (KLAR) saw a surge in trading activity with a volume of $260 million, marking a 146.1% increase from the previous day. The stock ranked 449th in trading volume across the market and closed up 9.43%.
The heightened volume suggests renewed investor interest, potentially driven by strategic developments or market sentiment shifts. While no direct company-specific news was disclosed, the sharp volume spike often correlates with earnings updates, regulatory milestones, or broader industry trends. Investors may be recalibrating positions ahead of key financial reports or macroeconomic data releases.
To run this back-test accurately, clarification is required on four parameters: (1) Universe scope (e.g., all U.S. primary-listed stocks vs. S&P 1500/NASDAQ focus); (2) Trade execution timing (ranking by today’s vs. yesterday’s volume, and closing positions at tomorrow’s vs. today’s close); (3) Transaction cost assumptions (including fees or slippage); and (4) Portfolio weighting methodology (e.g., equal-weight across 500 names daily). Confirming these details will ensure the back-test aligns with intended strategy parameters.

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