The Battle Road Tech Index™ fell 2.9 percent for the week ended April 30, 2010, closing at 1812. For the week, 23 of the 25 Index components declined in value. Year-to-date, the index is up 7.9 percent, having started at a value of 1680.

Akamai (AKAM), Western Digital (WDC), and Adobe (ADBE) were notable movers for the week:

Akamai (NASDAQ: AKAM, $38.83) shares surged 13.5 percent this week following a strong Q1 earnings report. The company saw growth across all product categories, leaving critics and shorts scrambling. Fear of competition melted away as the company posted an 81.8 percent gross profit margin for the quarter, its highest level since September 2007. The company could hit $1 billion in revenue this year, doubling in four years.

Shares of Western Digital (NYSE: WDC, $41.09) fell 8.1 percent following news that it would acquire production assets from Japanese glass maker Hoya Corp. WDC has agreed to purchase the magnetic media sputtering operations for $235 million in cash, in a deal that included a multi-year commitment for glass substrate supply from Hoya. This should allow WDC to ramp up its component capacity at a lower cost than purchasing its own equipment, and with higher yields as the equipment is already at full operation. This also gives the company a better competitive position in front of a capacity-constrained second-half, which will be marked by high seasonal demand and tight supply.

Adobe (NASDAQ: ADBE, $33.60) shares fell by 7.3 percent in response to a posting on Apple’s website, ostensibly written by Steve Jobs, in which he raised six major obstacles to supporting Adobe’s Flash products for use on Apple’s iPad and iPhone. These included the proprietary dimension of the product, as well as concerns relating to Flash’s reliability, security and performance, as well as its ability to conserve battery life, and support features that are unique to mobile hand-held devices. Adobe Systems, for its part, continues to evolve the technology, hoping to persuade Apple that it has addressed its concerns.