Signals + methodology
Ten essays on how HoldLens computes its scores and why no single SEC filing tells the whole story. Start with The Superinvestor Handbook, then dig into ConvictionScore, InsiderScore, and the SEC signals trilogy. Includes our honest original-research finding: 13F signals alone don't predict forward returns (r = −0.12 across 221 ticker-quarter pairs).
The full 10-section guide — 13F filings, conviction signals, copy-trading myths.
The hedge fund edge explained without jargon.
How to tell a real bet from index padding.
The Form 4 insider-transaction metric synthesizing the tracked-superinvestor universe.
8-K material events on a unified scale; item taxonomy + weight calibration.
13F + Form 4 + 8-K read together; why no single filing tells the whole story.
Original backtest — 221 ticker-quarter pairs, r = −0.12.
Why mechanically copying Buffett underperforms the underlying portfolio.
Which Buffett principles are actually transferable.
Why every hedge fund performance number you read is probably an overestimate.
Reading for your research
Optional background reading on interpreting company disclosures and investing methods. These books do not validate a signal or predict returns.
Amazon affiliate links — as an Amazon Associate, HoldLens earns from qualifying purchases and membership trials at no extra cost to you. These are books we genuinely recommend. Not investment advice; always do your own research.