Every number on Gridlocked falls into one of three tiers. The product labels each tier on the page where it appears, and nothing here should be treated as verified investment data.
Where the market data comes from
Current quotes use Finnhub when live data is enabled. Historical returns and sparklines currently use Yahoo Finance's unofficial chart data — acceptable for prototype display, to be replaced with a licensed, source-approved provider before a serious commercial launch. Live provider calls can be paused, and both routes fall back to local data when paused or unavailable; the on-page data-status labels reflect whichever state is active.