{"sample":true,"note":"Static example of what /sec/13f returns; not live data and not charged. Call without sample=1 and pay $0.01 with any x402 client for a live result.","tool":"/sec/13f","price":"$0.01","example":{"filer":"BERKSHIRE HATHAWAY INC","cik":"0001067983","form":"13F-HR","filed":"2026-08-14","period":"2026-06-30","positions":41,"totalValueUsd":257500000000,"holdings":[{"issuer":"APPLE INC","class":"COM","cusip":"037833100","valueUsd":57400000000,"shares":280000000,"putCall":null,"weightPct":22.29}],"url":"https://www.sec.gov/Archives/edgar/data/1067983/000119312526352200/","source":"SEC EDGAR (public information)"}}