There's a lot that can be determined about the health of a company from the trades linked to it in the financial markets.

A lot... but only so much.

JP Morgan, a stalwart of Manhattan's Wall Street, yesterday had a 'buy' recommendation on GM shares. Despite this considered verdict, GM's share price has been resolutely flat... unless you click on the five-day, one-month, three-month, six-month, year-to-date, one-year, two-year, five-year or max (back to 1962) charts, in which case it tends to fall away slightly on the right-hand side.

Essentially, JP Morgan reckons that the upside is more likely than the downside, if you'll pardon the technicalities.

Other industry analysts, such as KDP Advisors, say, 'Hold'. Don't buy, don't sell. The theory is that there will be a government rescue package to help the company, but that it will dilute the value of GM shares and bonds.