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The price record.

The Algo makes stock market alerts and trading tools. This is the price record they run on.

Every day since July 2026 is checked before it is kept; a day that fails the check is refused, and every refusal is on record. The history before that has been compared after the fact: where a price was found wrong, the correction is on record (the piece below), and carrying those corrections into the prices our tools use is the step in progress.

Two stocks so far, SPY and NVDA, every trading day since each one first traded. More as each one earns its way in.

prices kept
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daily, weekly and monthly
freshest day
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reading the record…
every stock complete
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expected days = days kept
last checked
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nights refused
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by the check
01

What is in it

Daily, weekly and monthly prices for each stock, one per day, from the first day we could prove to today. Written once. Never edited in place.

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02

How a price gets in

Every new day is checked before it gets in. If it fails, that day is refused, not stored as a maybe. The ones that got in are the ones you see.

Refused is a real answer here.
03

Check it yourself

The record checks every day that every stock is complete, and publishes the answer. No login, no dashboard, no taking our word for it.

See today's answer · or curl thealgo.io/api/status
Spot the price that wasn't

Five minutes of trading, drawn to scale. One of them is lying. Tap it.

Tap a minute.
Nothing here is investment advice. · thealgo.com