Top holdings from an institutional investment manager's most recent 13F-HR filing (managers >$100M AUM file quarterly). Parses the standard SEC informationtable.xml attached to the filing — returns issuer, CUSIP, shares, USD value, and voting authority for each position. Sorted by USD value, descending. Source: data.sec.gov + filing archive. ?cik=1067983 (Berkshire) or ?ticker=BRK-B