Norfolk Southern Corp. (NSC) was reviewed at the end of July when I wrote that, "Traders looking to get long NSC or add to longs should look to buy in the $170-$165 area. Risk below $155 for now while looking for initial gains to the $185 area." Traders should be long so let's check on the charts and indicators.
In this updated daily bar chart of NSC, below, we can see that prices have leveled off this month. NSC is still above the rising 50-day moving average line but the daily On-Balance-Volume (OBV) line has been flat the last week suggesting a balance between bulls and bears. The Moving Average Convergence Divergence (MACD) oscillator crossed to the downside for a take profits sell signal.
This weekly bar chart of NSC, below, does not show any weakness. Prices are in an uptrend and above the rising 40-week moving average line. The weekly OBV line is strong as is the MACD oscillator. These indicators are not foreshadowing weakness.

In this Point and Figure chart of NSC, below, we can see the uptrend and the $183 price target.
Bottom line: Traders who are long could raise sell stop protection to $160 now.