{
  "page": "compare",
  "query": {
    "a": "CTFDX",
    "b": "RBBAX"
  },
  "retrieved_at": "2026-07-07T17:37:08+00:00",
  "disclaimer": "Informational only — not investment advice. FundWatcher presents publicly available data and makes no recommendation to buy or sell any security. Verify all figures against the source filing before relying on them.",
  "attribution": "Data sourced from U.S. SEC EDGAR filings (Forms N-PORT, N-CEN, and prospectus Risk/Return summaries). FundWatcher is not affiliated with the SEC.",
  "terms": {
    "notice": "Use of this data is subject to the FundWatcher Terms of Service. Information may be used only for personal, non-commercial research and may not be redistributed.",
    "url": "https://fundwatcher.app/terms/"
  },
  "fund_a": {
    "name": "Columbia Thermostat Fund",
    "ticker": "CTFDX",
    "slug": "CTFDX",
    "series_id": "S000009189",
    "html_url": "https://fundwatcher.app/funds/CTFDX/"
  },
  "fund_b": {
    "name": "Columbia Income Builder Fund",
    "ticker": "RBBAX",
    "slug": "RBBAX",
    "series_id": "S000031347",
    "html_url": "https://fundwatcher.app/funds/RBBAX/"
  },
  "overlap": {
    "coverage_a_by_b": "0.2562219397342009540090480422",
    "coverage_b_by_a": "0.2562219397342009540090480422",
    "shared_count": 5,
    "as_of": {
      "a": "2026-03-31",
      "b": "2026-01-31"
    },
    "a_top": [
      {
        "name": "COLUMBIA INTERMEDIATE BOND FUND",
        "value": "202937829.78",
        "weight": "0.16135502",
        "shared": false
      },
      {
        "name": "COLUMBIA SELECT CORPORATE INCOME FUND",
        "value": "162396193.52",
        "weight": "0.12912053",
        "shared": true
      },
      {
        "name": "Columbia US Treasury Index Fund",
        "value": "162337603.42",
        "weight": "0.12907395",
        "shared": true
      },
      {
        "name": "COLUMBIA US GOVERNMENT MORTGAGE",
        "value": "122185494.73",
        "weight": "0.09714917",
        "shared": true
      },
      {
        "name": "COLUMBIA LARGE CAP ENHANCED CORE FUND",
        "value": "109961224.62",
        "weight": "0.08742971",
        "shared": false
      },
      {
        "name": "COLUMBIA TRUST CONTRARIAN CORE FD",
        "value": "109672066.64",
        "weight": "0.08719980",
        "shared": false
      },
      {
        "name": "COLUMBIA FUNDS SERIES TRUST - CO",
        "value": "87822376.59",
        "weight": "0.06982720",
        "shared": false
      },
      {
        "name": "COLUMBIA RESEARCH ENHANCED CORE ETF",
        "value": "87541868.70",
        "weight": "0.06960417",
        "shared": false
      },
      {
        "name": "COLUMBIA DIVERSIFIED FIXED INCOME ALLOCATION ETF",
        "value": "81128467.52",
        "weight": "0.06450490",
        "shared": true
      },
      {
        "name": "Columbia High Yield Bond Fund",
        "value": "80859918.88",
        "weight": "0.06429138",
        "shared": true
      },
      {
        "name": "COLUMBIA CORNERSTONE GROWTH FUND",
        "value": "44094728.04",
        "weight": "0.03505953",
        "shared": false
      },
      {
        "name": "COLUMBIA SHORT TERM CASH FUND",
        "value": "6772302.78",
        "weight": "0.00538463",
        "shared": false
      }
    ],
    "b_top": [
      {
        "name": "COLUMBIA US GOVERNMENT MORTGAGE",
        "value": "244312664.97",
        "weight": "0.28708178",
        "shared": true
      },
      {
        "name": "Columbia High Yield Bond Fund",
        "value": "76350823.15",
        "weight": "0.08971672",
        "shared": true
      },
      {
        "name": "COLUMBIA DIVIDEND OPPORTUNITY FUND",
        "value": "68913407.78",
        "weight": "0.08097732",
        "shared": false
      },
      {
        "name": "Columbia Emerging Markets Bond Fund",
        "value": "59675688.38",
        "weight": "0.07012245",
        "shared": false
      },
      {
        "name": "COLUMBIA FLOATING RATE FUND",
        "value": "58907464.34",
        "weight": "0.06921974",
        "shared": false
      },
      {
        "name": "Columbia International Dividend Income Fund",
        "value": "51638414.68",
        "weight": "0.06067818",
        "shared": false
      },
      {
        "name": "COLUMBIA DIVIDEND INCOME FUND",
        "value": "51471458.57",
        "weight": "0.06048200",
        "shared": false
      },
      {
        "name": "COLUMBIA SELECT CORPORATE INCOME FUND",
        "value": "46688540.68",
        "weight": "0.05486179",
        "shared": true
      },
      {
        "name": "COLUMBIA MORTGAGE OPPORTUNITIES",
        "value": "42591728.00",
        "weight": "0.05004779",
        "shared": false
      },
      {
        "name": "COLUMBIA SHORT DURATION BOND ETF",
        "value": "40915417.00",
        "weight": "0.04807803",
        "shared": false
      },
      {
        "name": "COLUMBIA DIVERSIFIED FIXED INCOME ALLOCATION ETF",
        "value": "30162329.34",
        "weight": "0.03544251",
        "shared": true
      },
      {
        "name": "COLUMBIA SMALL CAP VALUE DISCOVERY FUND",
        "value": "25336845.02",
        "weight": "0.02977229",
        "shared": false
      },
      {
        "name": "COLUMBIA REAL ESTATE EQUITY FUND",
        "value": "17104166.70",
        "weight": "0.02009840",
        "shared": false
      },
      {
        "name": "COLUMBIA FUNDS SERIES TRUST - CO",
        "value": "16877305.98",
        "weight": "0.01983183",
        "shared": false
      },
      {
        "name": "COLUMBIA ETF TRUST I COLUMBIA SHORT DURATION HIGH YIELD ETF",
        "value": "16264789.60",
        "weight": "0.01911209",
        "shared": false
      },
      {
        "name": "Columbia US Treasury Index Fund",
        "value": "3810090.99",
        "weight": "0.00447708",
        "shared": true
      },
      {
        "name": "COLUMBIA GOVERNMENT MONEY MARKET FUND",
        "value": "0.86",
        "weight": "0.00000000",
        "shared": false
      }
    ]
  },
  "error": null,
  "sources": [
    {
      "label": "N-PORT (fund A)",
      "accession_no": "0001410368-26-055051",
      "as_of": "2026-03-31",
      "edgar_url": "https://www.sec.gov/Archives/edgar/data/2110/000141036826055051/0001410368-26-055051-index.htm"
    },
    {
      "label": "N-PORT (fund B)",
      "accession_no": "0001410368-26-033303",
      "as_of": "2026-01-31",
      "edgar_url": "https://www.sec.gov/Archives/edgar/data/1352280/000141036826033303/0001410368-26-033303-index.htm"
    }
  ]
}