- David Rosenberg took a jab at billionaire investor Bill Ackman for his bet against US Treasurys.
- The top economist said falling US rents could see inflation "melt," suggesting the Fed could end its hikes.
- His view contrasts to Ackman who revealed he's shorting 30-year US Treasurys as a hedge against high inflation.
Top economist David Rosenberg took a swipe at Bill Ackman, saying his Treasury bet could end as badly as his Herbalife wager.
The Rosenberg Research founder said a slowdown in the housing market could see inflation "melt" – suggesting the Federal Reserve could soon end its rate hiking cycle. That contrasts to Ackman's view of stubbornly high inflation, which has led him to short US Treasurys.