So, back in the nineties, when banks handed out shares like smarties, they could only give shares to individuals, not couples. Legally, each share could be owned by one person. so - did they give 50% to men, and 50% to women? Did they ask the owners of joint accounts if they preferred one person to have the shares? OR - did they give the shares to the FIRST named person on a joint account who was, ta da, the penis wearing person?
Luckily, I have a DH who sees all possessions as joint possessions, and I knew about the shares, but imagine in a household where the man sees all money as his, and keeps finances hidden.
I wish I knew how to challenge things like that legally, because it was national banks handing out those shares, and therefore giving men money that women didn't get.