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Portfolio data in the MKK API gives you access to the investment holdings disclosed in each fund’s periodic reports. The API exposes this data at two levels: normalized portfolio_entries that represent individual security positions within a document, and stocks that aggregate equity holdings across all funds for cross-fund comparison. You can use this data to track what funds hold, how positions change over time, and which securities appear most widely across the MKK fund universe.

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Portfolio entries

A portfolio entry is a single normalized row from a fund’s holdings table in a disclosure report. Each entry represents one security position as reported for a specific fund and period.

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Key fields

FieldDescription
securityName of the security
isinISIN code identifying the security
issuerIssuing entity
bankCustodian or counterparty bank (where applicable)
maturity_dateMaturity date for fixed-income instruments
pricePrice per unit at the reporting date
market_valueTotal market value of the position
nominal_valueFace or nominal value
currencyCurrency of the position
portfolio_weightPosition as a percentage of total portfolio
sectionPortfolio section this entry belongs to

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Portfolio sections

The section field on a portfolio entry indicates the type of asset class or portfolio segment the security belongs to — for example, equity, bond, money market, or repo. Sections correspond to how the fund’s disclosure report groups its holdings tables. You can filter portfolio entries by section to focus on a specific asset class: 
GET https://mkk-roan.vercel.app/api/portfolio-entries?fund_code=OJB&section=equity
Use the section parameter to narrow results when a fund holds many instruments across multiple asset classes. Without it, you’ll receive all holdings for the fund across all sections.

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Portfolio entries vs. portfolio rows

The API distinguishes between two representations of portfolio data:
  • portfolio_entries — normalized objects with typed fields (market_value, isin, portfolio_weight, etc.). These are the best choice for structured querying and data analysis.
  • portfolio_rows — raw table rows as parsed from the PDF, each with a columns array containing the cell values in their original order. Use portfolio_rows when you need to inspect the raw parsed table structure or handle columns that don’t map to normalized fields.
portfolio_rows are available on individual document responses. portfolio_entries are available both on documents and via the dedicated /portfolio-entries endpoint.

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Stocks

Stocks are an aggregate view of equity securities across all funds in the MKK API. Each stock record combines holdings data from every fund that reported a position in a given security, giving you a cross-fund picture of that equity.

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Stock fields

FieldDescription
keyStable slug identifier for the stock
securitySecurity name
isinISIN code
issuerIssuing entity
sectionsPortfolio sections where this security has appeared
entry_countTotal number of portfolio entry records
document_countNumber of documents containing this security
fund_countNumber of distinct funds holding this security
latest_holder_countNumber of funds holding it in the most recent period
latest_market_valueAggregate market value in the most recent period
average_weightAverage portfolio weight across all holdings
max_weightHighest portfolio weight recorded
latest_periodMost recent period in which this security was reported

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Example requests

curl "https://mkk-roan.vercel.app/api/portfolio-entries?fund_code=OJB"

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Example portfolio entry

{
  "security": "AKBANK T.A.Ş.",
  "isin": "TRAKBNK91N6",
  "issuer": "Akbank",
  "bank": null,
  "maturity_date": null,
  "price": 42.50,
  "market_value": 2125000.00,
  "nominal_value": 50000,
  "currency": "TRY",
  "portfolio_weight": 3.82,
  "section": "equity"
}

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Example stock record

{
  "key": "akbank-tas",
  "security": "AKBANK T.A.Ş.",
  "isin": "TRAKBNK91N6",
  "issuer": "Akbank",
  "sections": ["equity"],
  "entry_count": 284,
  "document_count": 201,
  "fund_count": 22,
  "latest_holder_count": 18,
  "latest_market_value": 48200000.00,
  "average_weight": 2.94,
  "max_weight": 9.12,
  "latest_period": "2023-Q4"
}