# Stocks will tumble much further as AI investment will slow next year then fall in 2028 and drag GDP down too, economist predicts schema_version: 1 ยท https://agentpress.tv/e/2359/stocks-will-tumble-much-further-as-ai-investment-will-slow-next-year-then-fall - id: 2359 - level: 1 - domain: macro - importance: 57 (magnitude=70 sources=25 novelty=55 question=75) - relevance: 85 - sources_n: 1 - independent_24h: 1 - first_reported: 2026-11-08T18:22:23.000Z - updated: 2026-11-08T18:22:23.000Z - entities: Capital Economics, S&P 500 - outlets: fortune.com - candidate_question: Will the S&P 500 close at least 12% below its November 6, 2026 closing level on December 31, 2027? (type=prag, deadline=2027-12-31) ## Summary Capital Economics predicts that slowing AI investment will weigh on stocks and GDP, with the S&P 500 ending 2027 12% below its current level. The forecast also puts the index 17% below its early-October peak. ## Sources | # | published_utc | outlet | title | url | |---|---|---|---|---| | 1 | 2026-11-08T18:22:23.000Z | fortune.com | Stocks will tumble much further as AI investment will slow next year then fall in 2028 and drag GDP down too, economist predicts | |