Norbert Lou

Punch Card Management

Ultra-concentrated value

Runs one of the most concentrated funds in existence — sometimes just 2-3 positions. Inspired by Buffett's suggestion to limit decisions to a 20-punch card.

$271M

Portfolio Value

Positions

2026-05-15 ↗

SEC 13F Filing

Changes This Q

Portfolio Map

Sized by portfolio weight · colored by quarter-over-quarter change · click ticker to view analysis

New position Increased Reduced Sold / Closed Unchanged CALLBullish options bet PUTBearish options bet

Full Portfolio · 2026-05-15

5 positions — click any ticker to open its analysis page

#	Ticker	Company	Type	Value	% Portfolio	Δ %	Shares	Status

Quarter-over-Quarter Changes

2026-02-17 → 2026-05-15 · 1 positions moved

Action	Ticker	Company	Shares Δ ⓘ	Value ⓘ	Wt. Δ ⓘ	Portfolio % ⓘ