Whale Watch
13F, at quarter end
Where institutional capital concentrates, at quarter-end resolution.
The latest 13F of each fund Convexity tracks, read through FMP on weekdays, with every position's weight in its book and its change since the quarter before. On Pro.
Form 4from an insider’s trade
Due within 2 business days. Convexity reads it every 2 hours for the S&P 500, nightly for the rest.
Congressfrom a member’s trade
Due within 45 days. Convexity reads it four times a day.
13Ffrom the quarter’s end
Due within 45 days. Convexity reads it weekdays.
Deadlines: SEC Rule 16a-3, STOCK Act section 6 and SEC Rule 13f-1, retrieved 2026-10-19.
13F is a quarter-end photograph, developed six weeks late.
A manager has 45 days after the quarter ends to file, so a position can be gone before anyone reads it.
Long US equity positions as of the quarter’s end, as each fund reported them, dated by quarter and by filing.
The funds Convexity tracks: activists and value investors beside index giants, banks, a pension and a foundation.
Real-time positioning. Shorts, swaps and most other instruments are outside 13F, and a fund may have sold since.
Every filer. Thousands of managers file 13Fs; Convexity reads the ones it tracks.
Weight in the book, beside the dollars.
Its share
Each position’s share of its fund’s reported 13F book, on the fund’s page.
4ways a position moves
New, increased, reduced or held, against the fund’s quarter before.
Each pair: the quarter before, then this one.
10names held most widely
How many tracked funds hold a name, for the ten names held most widely.
The cards draw shapes, not any fund’s book. Lists rank by dollars, not by weight, and a position a fund has sold is not yet marked as an exit.
Every style of manager, indexers included.
Each tracked fund carries a style: activists and value investors, long/short and quantitative funds, macro and multi-strategy shops, and the index giants among them. Curated means chosen, not only active.
- Activist
- Value
- Long/Short
- Macro
- Quantitative
- Growth
- Index/ETF
- Multi-Strategy
- Active management
- Distressed
- Diversified
- Tech/Growth
- Institutional
- Credit
- Event-Driven
- Factor/Index
- Foundation
- Global Macro
- Pension
- Private Equity
- Quality Compounders
One dot for each filer Convexity reads, grouped by the style its registry entry carries.
13F, where it shows in the terminal.
Whale Watch
The tracked funds, the names they hold most widely, quarter-over-quarter flow, and each fund's book with its weights. On Pro.
The stock page
A name's 13F holders in aggregate, beside its insider and congressional trades, in its Ownership section. On Pro.
Mimir
A company’s largest tracked holders, ranked by the weight it carries in each fund’s book. The top four are free.
Sketches of the screens, not their data.
Read 13F like a professional analyst, not a retail speculator.
The funds Convexity tracks, every position weighted and dated, on Pro.