{"slug":"massive-d908578a","name":"Massive","summary":"SEC Form 13F filings data showing institutional investment manager holdings. Form 13F is required to be filed quarterly by institutional investment managers with at least $100 million in qualifying assets under management. Can't find what you're looking for? POST feedback to /feedback, no charge.","status":"live","indexable":true,"listed_since":"2026-10-25T17:50:21.703246Z","sources":[{"source":"x402_bazaar","external_id":"https://agent.massive.com/stocks/filings/vX/13-F","owner_address":"0x525f6ddce9af7a7179d7696aabfcd5fcd15a21e6","seen_at":"2026-10-25T19:50:35.992501Z","removed_at":null}],"endpoints":[{"url":"https://agent.massive.com/stocks/filings/vX/13-F","host":"agent.massive.com","protocol":"x402","state":"live","last_probe_at":"2026-10-25T20:05:02.519150Z","last_ok_at":"2026-10-25T20:05:02.519150Z","tools_count":null,"tools_changed_at":null,"uptime_24h":1.0,"uptime_30d":1.0}],"also_listed_as":[{"slug":"agent-massive-com-3adcd181","name":"agent.massive.com"}],"notice":"Not affiliated with addrbook — claim or request removal."}