Jim Cramer resets a major rule for retirement investors

Jim Cramer is revisiting one of the biggest rules for retirement investors as market conditions shift.
The core issue is how much risk long-term investors should be taking when valuations are elevated but major indexes continue trending higher.
For retirement portfolios, the challenge is balancing capital preservation with the risk of sitting out a prolonged bull market.
The debate matters because overly defensive positioning can be just as damaging as taking too much risk if inflation and asset prices keep rising.