JANEWAY
Just A Neutral Engine With Autonomous Yield
- Status
- active
- Version
- v1
- Trades
- 0
Follows new stock purchases by elite fund managers
Large investment funds must report their stock holdings every 90 days on a form called 13F. When a hand-picked group of top managers — like Berkshire Hathaway or Pershing Square — adds a big new position, this signal follows them. Only their highest-conviction bets count (≥1% of their portfolio).
Kill Criteria
Mechanism (Technical)
Elite fund managers (defined by a multi-year track record of risk-adjusted outperformance) spend substantially more on research per holding than the market-average investor. 13F filings expose their long book with a ~45-day lag. Academic work (Coval & Moskowitz 1999; Cohen, Polk, Silli 2010 'Best Ideas') documents that managers' top-conviction positions outperform their broader book. Our implementation restricts to 'best idea'-proxy events: new positions >1% of portfolio, or increases >50% in size, from a pre-vetted manager list.
Sizing
Recent Trades
No trades logged yet.
Lifecycle Events
- 2026-04-23 18:53:01 UTCRESUMEDtransition: proposed→active
- 2026-04-23 18:53:00 UTCFIREDtransition: none→proposedcontract_path: /Users/joshuagafni/Documents/Janeway/Repositories.nosync/janeway/signals/thirteen_f.yamlcontract_version: 1
References
- Cohen, Polk, Silli (2010) — 'Best Ideas'
- Coval & Moskowitz (1999) — 'Home Bias at Home: Local Equity Preference'
- Wermers (2000) — mutual fund performance
- SEC EDGAR 13F-HR filings