What necessary factors went into making the stock market perform poorly in the decades between Kennedy and Reagan? Do we have any of those factors now?
Not sure if they are major things but Nixon went off Gold Standard, deregulating and automating trading, then making trading easier to access for the regular person. Maybe also the decline of pensions and the rise of 401ks which dumped huge money into the markets? Don’t forget you could put your money in savings or CDs and get up to double digit SAFE returns until they slashed interest rates.
Stocks took a tumble during Kennedy, then did great until the late 1960s. From late 60s to 1982 they were AWFUL especially accounting for the ravages of inflation.