The best Index Investing newsletters

Bid/Ask is an institutional-style research newsletter for wealth advisers, offering data-driven critiques of conventional asset allocation and ETF practices. It challenges orthodoxies such as the 60/40 portfolio, index inclusion rules, and dividend-based investing, with interviews and analysis.

A Taiwanese personal finance blog that tracks a monthly retirement withdrawal test portfolio of index ETFs, with commentary on the Taiwan stock market. It also covers travel savings tips such as cashback on bookings and hotel points.