Glossary
- A-Share
- AAA rating
- abs.
- Accrual bond
- Accumulate
- Acquisition currency
- Actively managed fund
- Ad-hoc disclosure
- Additional margin
- Admission of securities to the Regulated Market
- Admission to the exchange
- Admissions Office
- Advance-decline (AD)
- AIBD return (ISMA return)
- AIBD return (ISMA-return)
- All-time high
- All-time low
- Allocation
- Allotment
- Alpha
- American depositary receipt (ADR)
- American depositary share (ADS)
- American-style option
- Annual General Meeting
- AQR (VWAP) executions
- Arbitrage
- Asian option
- Ask
- Ask price
- Asset class
- Asset-backed security
- Asterisk * (price addendum)
- At the money
- Attentism
- Auction principle
- Automatic exercise (warrants)
AAA rating
Rating agencies assess the creditworthiness of borrowers and thus the likelihood that borrowers will meet their payment obligations as agreed. These agencies create their ratings on a systematic approach, assigning scores from AAA (spelled "Triple A") for the best to D for "almost hopeless" that debtors will be able to meet their payment obligations in the long run. The better the rating, the better the conditions a company or a country can raise capital through the capital markets. This rating helps investors making their investment decisions.
In addition to ratings for bonds issued by governments, banks or industrial enterprises, the agencies assign ratings for money market instruments and, in recent years, for investment funds.
Standard & Poor's, Fitch and Moody's are well-known rating agencies.
Deutsche Börse 
