/smart-money-cluster

name: smart-money-cluster
description: Workflow composite that runs manager-portfolio-diff across a curated cohort of well-known filers (Berkshire, Baupost, Renaissance, Bridgewater, Third Point, Pershing Square, Tiger Global, Scion, Appaloosa) and aggregates the initiations, adds, and exits by issuer. Surfaces cross-fund conviction: names that appeared in >= N funds' new positions this quarter. Requires Stocks Basic. Runs on the free tier.

smart-money-cluster

Runs `manager-portfolio-diff` across a curated cohort of well-known funds and aggregates the results by issuer. Surfaces names that appeared in >= N funds' new positions (initiations), adds, or exits this quarter as a "cross-fund conviction" signal.

Default cohort: Berkshire, Baupost, Renaissance, Bridgewater, Third Point, Pershing Square, Tiger Global, Scion, Appaloosa. Custom cohort via `--aliases`.

When to invoke

• Quarterly 13-F review
• "What did smart money buy this quarter?"
• Screening for names with cross-fund conviction as a starting point
• The user says "smart money", "13-F cluster", "cross-fund"

Not for: real-time (13-F is quarterly and lagged ~45 days). Not for alpha timing (crowded positions can underperform).

What you need

• `MASSIVE_API_KEY` exported
• Stocks Basic minimum

Optional:

• `--aliases` (default: 9-fund cohort)
• `--min-funds` (default 2): minimum fund count to surface a name

What you get back

**Layer 1: JSON**. Per-fund summary, clustered_initiations, clustered_adds, clustered_exits, each sorted by fund count then dollar volume.

**Layer 2: rendered note**. Per-fund one-liners + three cluster tables + Take.

Foundations used

• Composes `manager-portfolio-diff` across N filers.

Doesn't handle (yet)

• **Custom cohort scoring.** Each fund weighted equally. Historical

accuracy weighting would be a real extension.

• **Price context.** No overlay of cluster picks vs current price /

RS / vol regime.

• **Time-series cluster tracking.** Only current quarter; no

quarter-over-quarter momentum.

These are clean composite extensions.