Quarterly institutional holdings are among the most widely reproduced financial documents in the world, and among the most widely misread. The document is honest; the reading usually is not.
What the report actually contains
A manager over the size threshold files, within forty-five days of each quarter end, a list of positions held on the last day of that quarter. Each line gives the issuer name, the security identifier, the number of shares and a reported market value.
That is all. The report has no dates inside the quarter, no prices paid, no order of transactions, and no cash.
Three things it does not contain
It is not the whole portfolio. The requirement covers a defined list of securities. Short positions, cash, most debt, commodities, currencies and most non-U.S. listings are simply outside it. A manager whose strategy lives in those instruments can file a 13F that represents a small fraction of what they run.
It is not current. The positions are those of the quarter end. The filing arrives up to six weeks later. By the time anyone reads it, the described state is between six and eighteen weeks old depending on where in the cycle you are.
It is not a record of trades. Comparing two consecutive reports shows what differed between two photographs. Anything bought and sold entirely inside one quarter appears in neither.
Why "no longer reported" is not "sold"
When a position present last quarter is absent this quarter, the honest description is that it is no longer reported. It may have been sold. It may have fallen below a reporting threshold. The security may have stopped being covered. The manager's filing obligations may have changed.
We label the derived categories as new, increased, decreased and no longer reported, and we never rename the last one to "sold", because the document does not say that.
How to use it anyway
The report is genuinely useful for what it is: a dated, official, checkable statement of a large holder's covered positions at a point in time. It supports questions about concentration, overlap between managers, and change between two specific dates.
It does not support questions about what a manager thinks today.