Benzinga's Top Upgrades (TRMB, TEO, VMC, CRK)

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was upgraded by Canaccord from “hold” to "buy." TRMB's shares gained 0.21% to $33.96 at 11:06 am. TRMB's 52-week trading range is $20.87-$34.00. BofA/Merrill upgraded Telecom Argentina SA

from "underperform" to "neutral." TEO's shares advanced 1.40% to $20.30 at 11:06 am. TEO's trailing-twelve-month gross margin is 50.09%. Vulcan Materials Company

was upgraded by Jefferies from "hold" to "buy." VMC's shares gained 3.19% to $37.80 at 11:15 am. VMC's earnings are likely to surge by 414.46% in this year. Analysts at Ladenburg upgraded Comstock Resources Inc

from "neutral" to "outperform." CRK's shares advanced 3.99% to $21.10 at 11:17 am. CRK's earnings are likely to spike by 975.00% in the next year.