Shares of Adobe Inc., a leading US software developer, are trading within a medium-term ascending channel: this week, the price reached the upper boundary at 273.44 (the Murray level [7/8]) but was unable to hold above it. If the central level of the main Murray trading range at 250.00 (the Murray level [4/8]) is breached, with confirmation from the middle line of the Bollinger Bands, the downside momentum is likely to accelerate towards targets at 234.38 (the Murray level [2/8], the lower boundary of the ascending channel) or 226.56 (the Murray level [1/8]).