// Major indices
const indices = {
  sp500: "SP500",
  dow: "DJIA",
  nasdaq: "NASDAQCOM",
  russell2000: "RU2000PR",
  wilshire5000: "WILL5000PRFC"
};

// Treasury yields
const treasuries = {
  three_month: "DGS3MO",
  two_year: "DGS2",
  five_year: "DGS5",
  ten_year: "DGS10",
  thirty_year: "DGS30"
};

// Corporate spreads
const spreads = {
  aaa_corporate: "DAAA",
  baa_corporate: "DBAA",
  high_yield: "BAMLH0A0HYM2"
};

// Major currencies
const currencies = {
  euro: "DEXUSEU",
  pound: "DEXUSUK",
  yen: "DEXJPUS",
  yuan: "DEXCHUS",
  swiss_franc: "DEXSZUS"
};

// VIX
{ "series_id": "VIXCLS" }

// Credit spreads
{ "series_id": "BAMLH0A0HYM2" }

// Financial stress
{ "series_id": "STLFSI2" }