that pales in comparison to amylin, losing almost half its value. alkermes also involved in the drug's development. its stock shed more than a quarter of its value. the winner may be novo nordisk, which sells a competing treatment. its stock gained 10%. and that's tonight's "market focus." >> susie: social security payments are a lifeline for many retirees, but the amount of that check isn't fixed. it depends on how much you paid in social security taxes while you worked. in tonight's "money profiles" segment, benno schmidt has the story of a widow shortchanged on social security because of a mistake made years ago. >> i don't have nothing now. nothing. everyday is a hassle for me. >> reporter: miami resident dorothy miller never imagined retirement like this, living month to month, barely getting by. >> living on a social security check, believe me, my bills are more than my check! >> reporter: and dorothy miller's social security check might be a lot bigger today, except for a mistake made by her late husband decades ago. back in the 1950s, james