What is the impact to a company's stock price when it moves from AMEX to Nasdaq?

Oldman answered one week ago …

For several years, SinoVac was a penny stock...then, as they got better production reviews and certifications and began getting contracts for the H1N1 vaccine, their stock shot up to ca. $10.00.

With regard to Amex vs Nasdaq, it's a matter of financial costs and reporting to the "exchange'. If their financials don't meet revised Amex requirements, then Nasdaq may be the right place for them. There are a lot of really sound companies in the Nasdaq, and some movements back and forth have little to do with the market place's view of the value of the security.

If . in contrast, they will be on the Nasdaq electronic bulletin board (OTCBB), then their disclosures may not meet anyone's due diligence requirements.

Finally, a lot of really big, respectable and overseas companies delisted their American Depositary Receipts from BoNY-Mellon or Citigroup,( and off the NYSE-Arca or Amex) because the registration fees and the differences in accounting standards were such that they didn't want to pay through the nose to be listed as an ADR or ADS, while not being able to comply with Sarbanes-Oxley or needing to meet European requirements to use GAAP accounting...and I'm talking about HUGE companies, such as Suez or WRE (a German Utility)...that are thinly traded on the "pink sheets" of the Nasdaq...which also hold some weeny caps and penny stocks, and fly-by-night issues. So where a security is listed has something to do with its financial disclosures, but little to do with capitalization, value or economic soundness.