Form N-PORT fund portfolio holdings

What Form N-PORT actually captures

N-PORT is designed around a fund's portfolio report, not a marketing profile. The useful unit is a position for a particular fund series and report period. Depending on the reported instrument, the record can include the issuer and security description, identifiers, quantity or principal amount, value, percentage of net assets, asset category, and valuation information. The filing can also carry information about derivatives, counterparties, securities lending, and other portfolio attributes.

That structure makes N-PORT valuable for comparing a fund with itself over time or comparing several funds at a common reporting date. It does not turn an as-filed monthly observation into an intraday price, a complete beneficial-ownership record, or a promise that every portfolio detail is available at the same level of granularity.

Why use it for fund and ETF research

A fund name and ticker tell you what a product is called. N-PORT helps answer what it reported owning, how large a position was within the portfolio, and how that mix changed between reporting periods. This supports repeatable research for allocation drift, concentration, issuer exposure, sector or asset-class changes, and the appearance or disappearance of positions.

• Compare the top positions of an ETF or mutual fund across several report periods.
• Find funds with rising exposure to an issuer, asset class, or security type.
• Separate ordinary holdings from derivatives, cash, and other exposure records.
• Trace a surprising value or identifier back to the filing that reported it.
• Join portfolio observations to registered-fund, adviser, and security reference records.

How to use the dataset

Start with the product identity rather than a ticker alone. Select the registrant, series, class, or identifier, then choose a report-period range. For a single-fund review, inspect the source-linked portfolio first; for a comparison, hold the report period and measurement definition constant before ranking funds. When a position changes, open the filing and check the as-filed description, units, value, and any amendment relationship before assigning an investment conclusion.

Build a defensible time series

The strongest N-PORT analysis treats every observation as a dated snapshot. Keep report period, filed date, and retrieval date separate. A later filing can amend an earlier report, and a security can change identifiers or descriptions without representing a real economic trade. AUMSearch can make those joins easier, but the comparison still needs a consistent key and a stated rule for handling amendments, missing observations, splits, cash, and security reclassifications.

Under the current framework, funds maintain monthly portfolio information and file the three monthly reports for each fiscal quarter no later than 60 days after quarter-end. Detailed fund-identifiable information is generally public only for the third month, subject to limited exceptions. Amendments adopted in 2024 that would expand monthly public reporting were delayed: compliance is currently scheduled for November 17, 2027 for larger fund groups and May 18, 2028 for smaller groups. Any later SEC proposal remains a proposal until adopted, so AUMSearch labels the governing period instead of presenting a future cadence as current coverage.

This lets a researcher move beyond a one-period leaderboard. You can chart a position's share of net assets, compare sector or asset-class mix, identify recurring concentration, and distinguish a one-period anomaly from a persistent trend. Results should be described as reported portfolio changes, not as proof of the exact trade sequence that produced them.

Connect N-PORT to the rest of the catalog

N-PORT is most useful when it is not isolated. Join the series and class to Form 485 registration and prospectus records to understand product identity and strategy disclosures. Connect the adviser or subadviser to Form ADV records. Use the security reference layer to normalize issuer and instrument identifiers, then compare portfolio observations with Form 13F where the filer and reporting scope make that comparison appropriate.

These links answer different questions. N-PORT describes a registered fund's reported portfolio, while Form 13F describes a qualifying institutional manager's reportable holdings. Keeping the reporting entity and purpose visible prevents a convenient join from becoming a misleading equivalence.

Interpretation and coverage limits

N-PORT is periodic and source-dependent. Public records can be delayed, amended, incomplete for a particular analytical use, or expressed with instrument-specific conventions. A report period is not a current portfolio date, and a reported value is not necessarily a market value that can be compared across every asset type without context. A position's absence can reflect reporting scope, identifier matching, or a changed description rather than a confirmed sale.

Derivatives require special care: notional, fair value, underlying exposure, and collateral are different measures. Securities lending and cash records also need their own treatment. AUMSearch should surface the original fields, label normalized values, and link the official filing so users can see the evidence instead of receiving an unexplained aggregate.

How AUMSearch makes N-PORT research usable

AUMSearch organizes N-PORT around a connected fund, security, period, and source record. The web interface is intended for searching and comparing portfolios; the API is intended for repeatable retrieval and time-series analysis; MCP is intended for source-aware questions in an AI workflow; and data feeds are intended for scheduled snapshots or changes. Across each access path, the design principle is the same: deliver the normalized row with its report period, identifiers, and official source link rather than a number detached from its filing.