Forward yield vs trailing yield
Trailing yield uses the last 12 months of actual dividends paid, while forward yield uses the projected next 12 months based on the most recently declared dividend rate. A company that just raised its quarterly dividend from $0.50 to $0.60 has a trailing yield based on $2.10 (three quarters at $0.50 plus one at $0.60) and a forward yield based on $2.40 (four quarters at $0.60).
Forward yield is more useful for investment decisions since it reflects the current payout level. However, forward yield assumes the dividend remains stable — companies can cut dividends, especially during recessions. During 2020, approximately 30% of S&P 500 dividend payers reduced or suspended dividends.
Always check the payout ratio (dividends / earnings) — ratios above 80% suggest limited safety margin.