Shares of T2 Biosystems, Inc. ($TTOO) are experiencing notable trading activity as buyers are stepping in, with a potential breakout at the $4 level. Key technical indicators include the 20-day moving average at $4.23, the 200-day moving average at $4.49, and the 50-day moving average at $4.87. Despite recent positive news, the stock has faced downward pressure, potentially influenced by a high short interest, with 430,000 shares reported short. Traders are closely monitoring the volume, as the stock has not seen a million shares traded in months, and a sustained move above $4 could trigger further activity in the stock. The current trading environment has led to speculation about market manipulation, with some traders expressing concerns over the actions of market makers.