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training_data/curated/text/9f85ecaa357270fc42e5977a43c4e0e5b13d07c74f3d74ec03a1dcf180c6a266.txt

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+The difference is due mainly to rounding and the early-exercise potential of
+the American put. In mathematical terms
+The synthetic long stock is approximately equal to the long stock position
+when considering the effect of interest. The two lines in Exhibit 6.7 —
+representing stock and synthetic stock—would converge with each passing
+day as the calculated interest decreases.
+This equation works as well for a synthetic short stock position; reversing
+the signs reveals the synthetic for short stock.
+Or, in this case,
+Shorting stock at $51.54 is about equal to selling the 50 call and buying
+the 50 put for a $2 credit based on the interest of 0.486 computed on the 50
+strike. Again, the $0.016 disparity between the calculated interest and the
+actual difference between the synthetic value and the stock price is a
+function of rounding and early exercise. More on this in the “Conversions
+and Reversals” section.