Fidelity Investments, the world's third-largest asset manager, saw its funds increase in assets by $1 trillion over the past year as revenue jumped to a record high. Boston-based Fidelity said in its annual report on Tuesday that assets under management in its own investment funds and managed accounts rose to $5.90 trillion in 2024 from $4.90 trillion the year before. Revenue rose 16 per cent to a record $32.70 billion and operating expenses rose 14 per cent.