{"version":"1.0","type":"card","id":"a8cc1284-42a3-42d0-a287-60f4a644c9e3","url":"https://stacklist.com/card/a8cc1284-42a3-42d0-a287-60f4a644c9e3","title":"ETF Portfolio Update: An S&P 500 Alternative From Omaha","source_url":"https://www.compoundingquality.net/p/etf-portfolio-update-an-s-and-p-500","note":"Do you own an S&P 500 ETF? This page provides an update on ETF portfolios, focusing on alternatives to the S&P 500 index, particularly insights from Omaha.","image":{"url":"https://ucarecdn.com/df07c5a1-4868-459d-8d69-c8d51072b1ab/","alt":"ETF Portfolio Update: An S&P 500 Alternative From Omaha","width":1200,"height":630},"stack":{"id":"d1cd80b1-4423-450f-aa1e-dd4f2fcd5782","title":"Signals Served #010 — The New Patrons","url":"https://stacklist.com/c/finance/stack/d1cd80b1-4423-450f-aa1e-dd4f2fcd5782"},"created_at":"2026-05-13T11:11:01.292Z","updated_at":null,"aco":{"summary":"This ETF portfolio analysis examines concerns about S&P 500 concentration and high valuations, highlighting that 8 of the top 10 stocks are tied to the AI trend and the index's Shiller P/E ratio approaches dot-com-era levels. The author discusses an S&P 500 alternative inspired by insights from Warren Buffett's AGM in Omaha, questioning whether future returns can justify current AI infrastructure spending.","tags":["etf","s&p-500","portfolio","artificial-intelligence","valuation","index-investing","diversification"],"key_entities":[{"name":"S&P 500","type":"concept","confidence":0.99},{"name":"Warren Buffett","type":"person","confidence":0.95},{"name":"Christopher Bloomstran","type":"person","confidence":0.9},{"name":"Seth Klarman","type":"person","confidence":0.9},{"name":"Artificial Intelligence","type":"concept","confidence":0.95},{"name":"Shiller P/E Ratio","type":"concept","confidence":0.9},{"name":"JP Morgan","type":"organization","confidence":0.85},{"name":"Goldman Sachs","type":"organization","confidence":0.8},{"name":"Vanguard","type":"organization","confidence":0.8},{"name":"Omaha","type":"location","confidence":0.9},{"name":"Berkshire Hathaway AGM","type":"event","confidence":0.88},{"name":"CAPE Ratio","type":"concept","confidence":0.85},{"name":"Peter Lynch","type":"person","confidence":0.8},{"name":"Compounding Quality","type":"organization","confidence":0.85}],"classification":"analysis","language":"en","confidence":0.85,"provenance":{"model":"claude-opus-4-6","tool":"@stacklist/mcp-server@2.0.0","confidence":0.85,"timestamp":"2026-05-13T11:11:10.891Z"},"token_counts":{"approximate":1795,"cl100k":1566},"content_hash":"sha256:aa2ef680f58d578577722b41feef161adf1e740fa69b2e15a447187ee6389aa2","acp_version":"0.2","body_available":true,"body_tokens":1795,"visibility":"public","agent_accessible":true,"status":"final"},"_links":{"self":"/api/public/card/a8cc1284-42a3-42d0-a287-60f4a644c9e3.json","html":"https://stacklist.com/card/a8cc1284-42a3-42d0-a287-60f4a644c9e3","md":"/api/public/card/a8cc1284-42a3-42d0-a287-60f4a644c9e3.md","stack_json":"/api/public/stack/d1cd80b1-4423-450f-aa1e-dd4f2fcd5782.json"}}