Bubble sitter - Tradução em português

Hello everyone.

Solicito por favor a ajuda de vocês para me ajudarem com a tradução/significado da seguinte expressão: "Bubble sitter"

Segue o contexto:
"Bubble sitting the pros and cons.

Waiting for home prices to drop before buying a home is tempting. But making the right call isn’t simple. Convinced home prices will fall? So are lot of other Americans. Some, known as bubble sitters, are acting on their conviction. They’re cashing out by selling their homes and renting, figuring they’ll return to the market after prices have fallen. Bubble sitters also include those people who have never owned a home and are waiting to take the plunge, along with folks who are relocating and holding onto their cash until the market in their new hometown softens."

Fonte: CNN

Thanks in advance.

See you soon.

Emanuel.