Coming back to the resistance at USD 20 may stimulate price's relapse toward the support.

From a fundamental viewpoint, analysts have revised downward their 2015's EPS estimates. This situation could feed some profit taking in the short run.

After a bullish period on latter sessions toward the midterm resistance at USD 20, prices may consolidate on this area and return to the USD 18.96 support. As the resistance represents a key level, a bearish scenario could be preferred although the breakout over this threshold would invalidate all bearish anticipations.

Most active investors could open sellers positions on Teradyne close to USD 20. The target being set at USD 18.966, a stop loss could be placed at USD 20.52, threshold that would invalidate the bearish strategy.