Big companies like automaker Ford, aircraft builder Boeing and beverage king Coca-Cola are planning to cut the cash they put into employees' pensions this year. Investors are hoping to get their hands on the money instead.

Thanks to the rising stock market and higher interest rates, companies aim to cut contributions to their employee pension plans by 28% or $16 billion this year to $40 billion, says research firm International Strategy & Investment, based on estimates provided by the 345 companies in the that still have pension plans.