Apple this morning has been upgraded by AmTech Research analyst Shaw Wu from “Neutral” to “Buy” a mere 13 days after the analyst cut his rating on the stock to “Neutral” from “Buy” on so-called “valuation concerns.”

Since April 22, the day the Wu that cut his rating, Apple shares have gained $24.80, or 15.5%, rising from $160.20 at the close on April 22 to $185 currently.

MacDailyNews Take: We guess that, for some reason, in under two weeks, Shaw’s “concerns” about Apple’s valuation have simply evaporated even as the company’s market value has risen $21.8 billion to $162.6 billion since April 22.