Pershing Square holds maybe a dozen names. Each one is a thesis Ackman has talked about publicly. The 13F is essentially a list of those theses with current weights.
This is the latest 13F-HR filing — the U.S. quarterly disclosure required of every institutional investment manager with $100M+ AUM, due within 45 days of quarter-end. Sub-positions for the same security (different voting authorities) are aggregated into a single row.
What's missing: short positions, non-equity holdings (bonds, commodities, swaps, FX), and any positions held outside the U.S. reporting framework. Position values are calculated by the filer at quarter-end mark and may diverge from current prices significantly.