contrarian trading; contrarian investing
A financial strategy of going against prevailing market trends; often contrasted with 順張り (trend-following).
See also: 順張り
He is known for his contrarian investment style.
When the market is falling, I buy on a contrarian basis.
Compound of 逆 (reverse, opposite) and 張り (noun form of 張る, here meaning to take a position or make a move). The exact origin as a financial term is uncertain, but it likely arose from investment jargon.