Whose Move Is This?
A stock you own just moved sharply.Before you react, find out why.
A stock you own is up 6% today. You haven't seen any news about the company.
This Lab puts you in a familiar moment: a stock you own has just moved sharply, and you have to decide what to do. You pick sell, hold or investigate, and the Lab then reveals what was actually happening and asks one question to help you think about it. There is no score. If you are signed in, the Lab remembers your last choice so it can ask whether your reasoning has changed; signed out, nothing is saved.
How to use this Lab
- Read the situation: a stock you own has moved by some percentage today.
- Choose what you would do: Sell now, Hold and wait, or Investigate first.
- Read what was actually happening, and the question that follows it.
- Choose Try another scenario to cycle through the others. If you have played before, the Lab shows what you chose last time and asks whether your reasoning has changed.
What to notice
- Not every move is about you
- A price can move because a large fund is rebalancing, because foreign investors are shifting money after a decision abroad, or because a crowd is chasing a trending stock. None of these changes the business you own.
- Some moves really are about the company
- The Lab also includes a case where the news is genuinely about the business. The skill is telling the two apart, not always staying calm.
- Investigating is an answer
- Finding out why a price moved before acting is a real choice, not a way of avoiding one. The Lab lets you see what each reaction looks like once the cause is known.
How a scenario unfolds (hypothetical)
A stock you own is up 6 percent today, with no news about the company. You choose Investigate first. The Lab reveals that a large mutual fund bought a big block as part of routine rebalancing written into its process months ago, nothing to do with the company or your reason for holding. It then asks whether a fund's scheduled rebalancing matches why you bought the stock, and so whether the move was really about you.
What this Lab does not show
- The scenarios are illustrations of common causes, not predictions. A real move can have several causes at once, and the cause is often not known on the day.
- There is no right button. The Lab does not tell you to buy, sell or hold any stock, and Maetis does not give investment advice.
- If you are signed in, your earlier choices are saved to your account, so the Lab can ask about them next time. Deleting your account removes them. Signed out, nothing is saved.
Common questions
- Why does a stock move when the company has not announced anything?
- Prices also move because of what large funds, foreign investors and crowds are doing, and none of that needs news from the company.
- Should I sell when a stock I own drops sharply?
- The Lab does not tell you what to do. It helps you ask what is behind the move, and whether it changes the reason you hold the stock.
- What does it mean to investigate first?
- Finding out what drove the move, such as company news, a market-wide move or a flow of money, before you act on it.
- Does the Lab keep a record of my choices?
- Only if you are signed in. It then remembers your last choice for each scenario in your account, to ask whether your reasoning has changed, and deleting your account removes it. Signed out, nothing is saved.