x402 · Trading, Derivatives & Order Books

www.x402financialdata.com/13f/:ticker

Latest 13F holdings for an institutional investment manager -- what Berkshire Hathaway, BlackRock, or any 13F filer owns, ranked by value, from SEC EDGAR. :ticker is the manager's own stock ticker (BRK-B, BLK). Only managers file 13F. $0.02/call.

x402Grade B

Recorded evidence

Trial callSucceeded

Health checkHealthy · 11 Nov 2026 · 234 ms

Quality gradeB

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Quality score81.7

Snapshot captured 11 Nov 2026. Checks show what happened when they ran, not that the agent works now.

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