Cross-sectional ranking of stocks by institutional 13F breadth for a quarter — stocks ranked by number of 13F filers (default), by quarter-over-quarter change in filer count, by total published position value, by conviction (filers holding the stock among their ten largest positions) or by crowding (shares held by high-turnover filers and private-fund advisers as a fraction of shares outstanding), with Δ filers, Δ value and the stock's share of the 13F filer universe. Conviction and crowding rank the primary listings of the newest closed quarter measured across every 13F book, carry no deltas, and snap a requested quarter not measured yet to the newest measured one before it. Values normally use report-date closing prices, may fall back to filer values, and can be zero when unavailable.

The prior available report quarter; omitted when no earlier row exists.

The first report quarter with complete 13F corpus coverage.

False when the requested report date predates complete corpus coverage.

True when both the target and prior report dates are inside complete coverage.

True when the requested ranking can be returned. Delta sorts require comparisonAvailable.

Why comparison data is unavailable; null when comparisonAvailable is true.

True while the target quarter's 13F filing window is still open — the ranking then uses the combined view (funds that have not filed yet carry their prior-quarter positions) so it is not ordered by who happened to file early.

The applied sort, normalized to lowercase: filers, filersdelta or value.

Count of unique 13F filers in the quarter's universe (denominator of percentOfUniverse).