Just looking at this chart here, hope it shows up:
https://www.google.com/search?q=pall+etf&oq=pall+etf&aqs=chrome..69i57j0l7.1696j0j7&sourceid=chrome&ie=UTF-8
That ETF at least seems to trend up for a long period, then drop a good bit real fast, then trend up for a long period again, repeat...