The primary concerns of TREIF's investment management are safety and liquidity while maintaining a balance with profitability, as well as risk diversification to achieve optimal portfolio. As of the end of 2025, TREIF had NT$54.84 billion in available funds, including NT$14.19 billion (25.9%) in bank deposits, NT$1.90 billion (3.5%) in commercial paper, NT$10.88 billion (19.8%) in government bonds, NT$16.88 billion (30.8%) in financial bonds, NT$10.93 billion (19.9%) in corporate bonds, and NT$57 million(0.10%) in ETF。