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Today Yahoo, Google, CNBC, etc. are all reporting an open for DDM of \$106.95, a close of \$107.69 and a delta on the day of \$2.69. But the arithmetic difference between the open and the close is actually \$0.74. Why is there such a huge discrepancy?

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closed as off-topic by Joshua Ulrich, olaker Jan 2 at 19:39

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1 Answer

The day's net change is typically displayed as the $Close$ to $Close$ difference. So today's close of $\$107.69$, yesterday's close is $\$105.00$. So the net change, $\$107.69 - \$105.00 = \$2.69$. If you were to calculate $Open$ to $Close$, you'd get what you expect, $\$0.74$.

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Much thanks... I should have known that. –  Roger Smith Dec 8 '13 at 0:40
    
Please accept the answer if it resolves your question. –  Louis Marascio Dec 9 '13 at 0:37
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