BUZZ-Norfolk Southern Corp: Best day in 5 months
** Railroad operator's shares up about 8.7 pct at $89.87, best day since Canadian Pacific Railway Ltd made its offer in November
** At least 2 brokerages upgrade stock. Credit Suisse raises to "outperform" from "neutral"; UBS to "buy" from "neutral" after earnings handily beat analysts' estimate
** "We have increased confidence in the management team's ability to wring costs out of the network," Credit Suisse analysts write
** At least 9 brokerages raise PTs
** Canadian Pacific abandoned its hostile bid last week
** Up to Thursday's close, Norfolk stock had fallen 21 pct in the past 12 months
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