Recent performance (as of August 2025) shows total money market fund assets reached $7.15 trillion, with a weekly increase of $76.24 billion, driven by gains in government and prime funds. Yields have been competitive due to higher interest rates, with some funds offering 4-5% seven-day SEC yields, though returns vary based on fund type (e.g., government, prime, or municipal) and expense ratios. Inflation and fee impacts can erode real returns over time.