Insights into your investments
Know what you own.
See what’s underneath.
Look up any fund or company. Follow a fund down to the businesses it holds, read how each one makes money, and see which big investors own it — and what they did last quarter.
Inside a familiar fundVOO
One fund. 505 businesses.
The ten largest holdings are
36.4%
of the fund
Jun 30, 2026
Jun 30, 2026
NVDA
7.51%
AAPL
6.59%
MSFT
Follow it all the way down →4.30%
01 · Understand a fundWhat does my fund actually hold?Holdings, what it costs, how it has done, and what changed last quarter — for the largest funds, in plain language.Browse funds & ETFs →02 · Understand a businessHow does this company make money?Fifteen years of revenue, margins, cash and debt, every filing, and who owns the shares.Start with Apple →03 · Follow the ownersWho owns it, and what did they just do?The quarterly portfolios of 37 well-known investors — what they hold, and what they added, trimmed and sold.See the superinvestors →
Research in practice
Pricing the AI buildout: an interactive model
The five hyperscalers are spending on AI infrastructure at a pace with no precedent. This piece explains the four things that actually drive what that spending is worth — growth, margin, terminal capex, and the discount rate — and hands you an interactive model to set those assumptions yourself. Educational, not a prediction, not investment advice.
Read it →Want to go deeper?
Ask across everything you own.
Each page here answers one question about one fund or company. If you want to ask across several at once, connect the ChatGPT or Claude you already use to this data and ask it directly:
- “Where do my funds overlap?”
- “Of the ten biggest holdings in my fund, which look strongest on cash and debt?”
- “What has Berkshire been buying over the last year?”
See how it works →Optional, and small. Your AI does the thinking, on your own account.
Funds are open to everyone.Holdings, costs, returns and quarterly changes for the largest funds — no account.
A free account opens the depth.Every holding, fifteen years of company financials, all filings, the full ownership picture. No card.
Your own AI is the optional extra.For asking across many funds or companies at once. We never do the analysis for you, and there is nothing else to buy.