(LDSF)

Veteran investor Warren Buffett's Berkshire Hathaway reported second-quarter earnings in late last week. These are lessons we have learnt from the release.

Americans are depositing money back into regional banks in lure of higher rates. Money markets instruments have also been fetching much assets.

Given the ongoing global banking crisis, stock volatility will remain rife in the coming days.

The Fed will keep on hiking rates this year and short-term bond yields will rise alongside.

Cash is emerging as a popular asset in Wall Street. As the Fed plans to raise interest rates faster this year, cash-like assets such as money-market funds should reflect that rate pattern.

What should a retiree do in a rocky investing environment like now? We highlight a few ETF strategies that could be considered in a retirement portfolio with a medium-term focus.