Or inverted: iOS (and iOS devices) are designed to attract better customers.

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When the spread is skinnier (or inverted), they can still profit, but mostly by lending to worse credit risks at higher rates.

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This would keep the yield curve relatively flat or mildly inverted as the Fed resumes hiking.

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Important markets tops come with a handful of key ingredients, including high valuations, a lot of optimism, and a treasury yield curve that is flat or even inverted.

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But Mr Penny, no snob, inverted or otherwise, offers practical advice.

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When the yield curve is inverted or relatively flat, it is a sign that investors are so afraid of future economic weakness that they are willing to take low interest rates on long-term holdings for fear that returns will become even less attractive later on.

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At one time analysts liked to do this by quoting the yield gap (though this became inverted when dividend yields fell below bond yields in the 1950s) or the yield ratio, both of which relate share to bond yields.

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The most common patterns were double tops and bottoms two peaks (or two troughs) at similar prices to each other followed by head and shoulders and inverted head and shoulders.

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