13F-HR/A Amendments: Restatements vs New Holdings

A 13F-HR/A is an amended 13F filing. It is not always a correction in the casual sense. On the SEC form, the filer must choose one of two amendment types: a restatement, which replaces the quarter's public report in full, or an amendment that adds new holdings entries to a current public report for the same period.

That distinction matters when you use 13F data. A restatement should be read as the new complete filing. A NEW HOLDINGS amendment should be read as a supplement. On 13F Insight, the default filer holdings view follows that model: it selects the correct base filing and then consolidates valid new-holdings supplements so readers see one usable portfolio instead of a pile of partial filings.

What the /A in 13F-HR/A means

The base form type is 13F-HR, the quarterly holdings report filed by institutional investment managers that meet the $100 million Section 13(f) threshold. The /A suffix means the manager amended a prior public 13F report. The SEC's Form 13F instructions say an amendment must either restate the report in its entirety or include only holdings entries being reported in addition to those already reported for the same period.

The two boxes on the cover page are the key. If the amendment is marked RESTATEMENT, treat the amended filing as the complete replacement. If it is marked NEW HOLDINGS, treat it as an additive filing that belongs beside the current public report.

The priority model in plain English

13F Insight uses a priority model that mirrors how investors should read amended filings:

• Restatement wins first. A 13F-HR/A marked RESTATEMENT replaces the original for that reporting period.
• Original filings are the normal base. A regular 13F-HR is the base filing when no restatement supersedes it.
• New-holdings amendments are additive. A 13F-HR/A marked NEW HOLDINGS is included after the base filing rather than used as the whole portfolio.
• Other rows are ignored for the consolidated portfolio. The goal is a reader-ready holdings view, not a raw EDGAR filing stack.

In product terms, the consolidated view answers a practical question: what did the manager publicly disclose for the quarter after amendments are interpreted correctly?

Why a filer may have many 13F-HR/A rows

Some filers manage securities across subsidiaries, operating companies, affiliated advisers, or separately identified managers. A large multi-manager filer can therefore have a base report plus later amendments that reveal additional holdings. That is especially visible in complex filers such as Berkshire Hathaway, where one public quarter can contain many line items tied to different reporting relationships.

For Berkshire's 2024Q4 page, the 13F Insight consolidated holdings endpoint shows $267.2 billion of reported 13F value, 112 raw line items, and 38 unique holdings. The same view shows Apple (AAPL) as a $75.1 billion position with 12 underlying line items. That is the kind of case where a raw filing-by-filing read can be confusing, while the consolidated view is designed to show the investor-facing result.

Restatement vs new holdings: the investor mistake to avoid

The common mistake is to treat every 13F-HR/A the same way. If you add a restatement to the original, you double-count. If you replace the original with a NEW HOLDINGS supplement, you undercount. The correct handling depends on the amendment type.

Amendment type	How to read it	Investor risk if misread
RESTATEMENT	Use it as the full replacement for the original report	Double-counting if the original is also included
NEW HOLDINGS	Add it to the current public report for the same period	Missing disclosed positions if the supplement is ignored
Blank or unclear amendment type	Treat cautiously and rely on platform consolidation	Comparing partial filings as if they were complete portfolios

How to use amended filings on 13F Insight

Start with the filer page, not the raw filing list. The Berkshire Hathaway portfolio page is the cleaner entry point because the holdings table defaults to consolidated holdings. The raw view remains useful when you want to inspect how many line items sit behind a position, but the consolidated view is usually the right starting point for portfolio interpretation.

Then compare the quarter-level totals with the position-level details. If a stock has many line items under one filer, as Apple does for Berkshire, that usually reflects reporting structure, not twelve separate investment theses. Use the aggregate shares, value, and portfolio weight for the investment read; use raw line items for filing mechanics.

Where confidential treatment fits

NEW HOLDINGS amendments often appear when positions that were not previously public become reportable in a later amendment. Confidential treatment is a separate SEC process, but the practical reading rule is related: when confidential treatment expires or is denied, the manager may have to file an amendment that adds the formerly omitted holdings. That is why an amended filing can be important without changing the rest of the portfolio.

If you see an amendment that adds only a few securities, do not assume the manager bought those positions on the amendment filing date. The amendment may be disclosing positions for an older quarter after the public-reporting status changed.

FAQ

What is a 13F-HR/A filing?

A 13F-HR/A is an amendment to a public Form 13F holdings report. It can either restate the original report in full or add new holdings entries to the current public report for the same quarter.

Does a 13F-HR/A replace the original 13F?

Only a 13F-HR/A marked RESTATEMENT replaces the original filing. A 13F-HR/A marked NEW HOLDINGS is additive, so it should be combined with the current public report.

What does NEW HOLDINGS mean on a 13F amendment?

NEW HOLDINGS means the amendment adds securities that were not in the current public report. It is a supplement, not a standalone complete portfolio.

Why does Berkshire Hathaway have many 13F line items?

Berkshire Hathaway is a complex multi-manager filer with positions reported across different relationships. 13F Insight consolidates those line items so investors can read the aggregate portfolio.

How does 13F Insight handle amended 13F filings?

13F Insight gives restatements priority over originals, uses the correct base filing, and adds valid NEW HOLDINGS supplements after that base for the consolidated holdings view.

Can a 13F amendment show an old position for the first time?

Yes. If a position was omitted from the public report because of confidential treatment, a later amendment may disclose it for the older quarter when that treatment expires or is denied.

Should investors use raw or consolidated 13F holdings?

Use consolidated holdings for the investment read because they group positions by security. Use raw holdings only when checking filing mechanics, line items, or manager-reporting structure.