All manner of weird things keep happening in financial markets, from bond yields that go down when they should go up, to near-daily swings between big-picture convictions. It's hard to manage money when everything feels so fragile.

These money and investing stories were popular with MarketWatch readers over the past week.

Finding a used car or truck at a bargain price is almost impossible these days. The cost of used vehicles has soared since the end of last year and prices are likely to stay high for a while. In the past 12 months, U.S. used vehicle prices have jumped almost 10%.

Intel Corp. earnings --- as will earnings from every other major chip maker this season --- will be probed for how quickly the industry is managing to ease supply issues that have plagued semiconductor customers for most of COVID-19

A global shortage of semiconductors --- chips that power massive data-centers, modern autos and countless digital devices --- has roiled global manufacturing and is not expected to end soon. It isn't a blanket problem, however, as different sectors within the chip industry will continue to be affected by the shortage in different ways.

All manner of weird things keep happening in financial markets, from bond yields that go down when they should go up, to near-daily swings between big-picture convictions. It's hard to manage money when everything feels so fragile.

There's a limit to what you are allowed to earn before you reach full retirement age

Consumer companies are investing in and partnering with companies that can help them pick up delivery speed

Recent history has shown that equities tend to outperform, but a review of returns back to 1793 reveals a different story.

Straight advice on money and market behavior from David Booth of Dimensional Fund Advisors.