| FOF Code | Description |
| + FA343150020.Q | Federal government retirement funds; nonmarketable Treasury securities held by Railroad Retirement Board; asset |
| + FA313140003.Q | Federal government; life insurance reserves; liability |
| + FA343064133.Q | Federal government retirement funds; corporate equities held by National Railroad Retirement Investment Trust; asset |
| + FA343061733.Q | Federal government retirement funds; agency- and GSE-backed securities held by National Railroad Retirement Investment Trust; asset |
| + FA343061133.Q | Federal government retirement funds; Treasury securities held by National Railroad Retirement Investment Trust; asset |
| + FA343063033.Q | Federal government retirement funds; corporate and foreign bonds held by National Railroad Retirement Investment Trust; asset |