Vantage research · November 2026 · finance
What AI cites for “is an index fund a good investment”
ChatGPT cited 1 site, Gemini cited 0 sites, Perplexity cited 9 sites. No site was cited by all three.
Updated every 3 monthsNext edition 1 February 2027
ChatGPTGeminiPerplexity dots beside a site: the other engines that cite it too
ChatGPT
1 site · opens with a sentence · has a table · opening 35 words
- investor.gov
Brands namedDiversification, Accessibility, VOO, VTI, VXUS, BND
Since October: dropped finra.org
Gemini
0 sites · opens with a sentence · no table · opening 20 words
Answered from what the model already knows: no sites cited.
Brands namedInstant Diversification, Low Fees, Market Ups and Downs
Same sites as October.
Perplexity
9 sites · opens with a sentence · no table · opening 34 words
- investor.vanguard.com
- morningstar.com
- chase.com
- marcus.com
- cnbc.com
- schwab.com
- investor.gov
- fidelity.com
- investopedia.com
Brands namednone
Since October: new investor.vanguard.com, chase.com, marcus.com, schwab.com; dropped hsbc.com.hk, ig.com
Cited by more than one engine
- investor.gov
Is your site one of them?
Ask your AI agent to run Vantage's analyze_citation_coverage for your domain and “is an index fund a good investment”, on all
three engines, and it will tell you whether you are cited, who is instead, and what changed since your last check.
More finance questions
Each engine was asked once, in English, as from the United States, on 2026-11-01. Answers change from run to run, so read this as a snapshot. Download the data.