15 quick checks on money markets, money market funds, bank MMDAs, T-bills, repo (GC vs. specials), ON RRP, and SOFR vs. LIBOR.
Key ideas: what “money market” really means, funds vs MMDAs vs T-bills, secured repo (GC vs. specials), ON RRP as a floor, and why SOFR (not LIBOR) is the main U.S. short-rate benchmark.