Credit rating change
💰 CapitalA rating agency upgrades or downgrades the company's debt.
Typical size
1-5%
Timeframe
Same day, usually modest
Evidence
0 logged events
Why it moves the price
Changes the cost of borrowing and, at the investment-grade boundary, which funds may hold the debt — feeding back into equity through interest expense and financial flexibility.
What separates a good call from a naive one
Ratings lag — the market has normally repriced long before the agency acts, so equity barely reacts. The exception is a downgrade out of investment grade into junk, which forces mechanical selling and sharply raises funding costs.
Measured impact
Every logged event is measured against real closing prices: the move from the close before the event, compared with the S&P 500 over the same window.
Next day
Not measured yet
After 1 week
Not measured yet
After 1 month
Not measured yet
No measured verdict yet — 0 events logged. Three or more are needed before the data says anything useful.
The evidence (0)
Every row is a real event, measured against actual closing prices.
Measured from historical closing prices. Past reactions do not guarantee future ones. Not financial advice.