Believe it or not, some stocks can even stump Jim Cramer.
When that happens, he puts it on his list to do more homework, and then follows up with investors to make sure that they receive a reasoned response. Sometimes, the research is surprising.
Tetra Tech provides consulting and engineering services for companies and governments handling complex problems with water, the environment, energy, infrastructure and resource management.
The company doesn't build anything. Instead, it does all the things that need to happen before building, like data analytics, assessment and planning. Tetra has made various acquisitions to expand overseas and provide more exposure to government customers, like the EPA.
"Basically, Tetra Tech has become a play on the rise of environmental regulation worldwide," the "Mad Money" host said.