Track hedge fund accumulation before the 13F deadline. Equal-weight signals — every fund counts the same, regardless of AUM. Rare tickers with fresh institutional buying score highest.
new_buyers ÷ √(1 + historical_holders) — so a stock with 3 fresh buyers
and only 5 prior holders (score ≈ 1.2) beats AAPL with 50 new buyers and 800 prior holders (score ≈ 1.8 ÷ 28 ≈ 0.06).
ETFs, invalid tickers, and PUT/CALL option rows are excluded. Minimum 2 new buyers required to surface.
Early HF Birds is designed to surface fresh institutional accumulation before the full 13F season is complete. Instead of rewarding giant positions or AUM-heavy funds, the page focuses on how many managers are newly entering a name, then discounts crowded stocks that were already widely owned in the previous quarter.
Use this page as an idea discovery layer, then validate each signal through the linked stock pages above, compare manager quality on fund rankings, or browse the full manager universe in all funds.
Pure buyer count favors mega-cap names that were already consensus holdings. Rarity Score intentionally gives more weight to new buying in less crowded stocks, which is often where early signal value is higher. For example, 3 new buyers in a stock with 5 prior holders (score ≈ 1.2) outranks 50 new buyers in a name with 800 existing holders (score ≈ 0.06).
The window opens the day after each quarter-end and the SEC deadline is 45 days later:
Filings arrive gradually throughout each window, so rankings shift daily as more managers file.
The signal table refreshes every 6 hours from the live database. New 13F filings parsed by the system are reflected within the next 6-hour cycle. The exact last-update timestamp is shown in the hero section at the top of the page. During peak filing weeks (especially around the 10th–20th of the deadline month) updates can shift the rankings significantly as hundreds of funds file within a few days.
Once the SEC deadline passes, the window is marked Closed and the data shows the final snapshot for that quarter. A new window opens automatically when the next quarter-end passes and fresh filings begin arriving. The rankings reset completely — each quarter is compared against the previous quarter's holdings, not a running total.
Yes. The page shows both new buyers and new sellers because mixed flows still matter. A name with strong new buying but rising selling deserves a lower-confidence read than a clean accumulation signal. The Buyer Ratio column (% of flow that is buying) helps distinguish clean conviction from contested positions.
It is a live filings page. Results evolve throughout the 13F window as more managers file, which is why deadline progress, EDGAR counts, and update timestamps are shown at the top. Once the window closes, 13Foresight's full fund-holding pages reflect the complete quarter. Use All Funds for the complete end-of-quarter picture.
On EDGAR shows how many 13F-HR filings exist on the SEC's public EDGAR system for the current window. Filed (DB) shows how many distinct fund CIKs have been parsed into 13Foresight's database. The gap between the two represents filings that are on EDGAR but not yet parsed — the coordinator processes these continuously. A small gap is normal; a large persistent gap may mean heavy parsing is in progress.
Use Early HF Birds as an idea discovery layer. Once a ticker surfaces here, validate it through the linked stock pages, check manager quality and track records on the Fund Rankings page, and compare cross-fund conviction in All Funds. For backtesting whether early-filing signals have historically outperformed, try the Demo Backtester.