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Fidelity National Information Services (FIS) closed on September 29, 2025, with a trading volume of $310 million, ranking it 364th in terms of daily turnover among U.S. equities. The stock rose 2.40% for the session, outperforming broader market benchmarks. The move followed a strategic review of its digital transformation initiatives, which highlighted expanded cloud infrastructure partnerships and enhanced cybersecurity frameworks. Analysts noted the firm’s recent operational updates as catalysts for investor confidence in its long-term growth trajectory.
Recent disclosures emphasized FIS’s commitment to optimizing its technology stack through targeted acquisitions in the fintech sector. The company reaffirmed its focus on reducing legacy system dependencies while scaling AI-driven transaction processing solutions. These developments align with its previously announced 2025 strategic roadmap, which prioritizes cost efficiency and market share expansion in high-growth regions. Institutional buying activity during the session suggested renewed interest in the stock’s earnings potential amid macroeconomic stability.
To construct this back-test accurately, I need to clarify a few practical details and assumptions: (1) Market universe—U.S. listed common stocks (NYSE + Nasdaq) or a different exchange set? (2) Daily selection rule—use prior trading day’s volume ranking to pick today’s portfolio, entering at today’s open and exiting at today’s close, or buy at the prior day’s close and exit at the next day’s close? (3) Portfolio weighting—equal-weight all 500 names each day, or weight by volume or market-cap? (4) Friction—zero transaction costs and slippage, or include a cost per trade? (5) Benchmark—any specific benchmark to report alongside, such as SPY? Once these points are confirmed, the data-retrieval plan and back-test execution can proceed.

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