Benzinga's Top Upgrades

Analysts at Bank of America Merrill Lynch upgraded

from Underperform to Neutral. Marketo shares have dropped 27.63 percent over the past 52 weeks, while the S&P 500 index has slipped 1.77 percent in the same period. Marketo rose 0.67 percent to close at $21.06 on Wednesday. Piper Jaffray upgraded

from Neutral to Overweight. Masimo shares have gained 21.47 percent over the past 52 weeks, while the S&P 500 index has declined 1.77 percent in the same period. Masimo fell 0.12 percent to close at $42.44 on Wednesday. Analysts at Ladenburg Thalmann upgraded

from Sell to Neutral and removed the price target of $61.00. Badger Meter shares have surged 16.72 percent over the past 52 weeks, while the S&P 500 index has dropped 1.77 percent in the same period. Badger Meter gained 3.89 percent to close at $74.28 on Wednesday. JMP Securities upgraded

from Market Perform to Market Outperform and announced a $25.00 price target. Walker & Dunlop shares have declined 0.64 percent over the past 52 weeks, while the S&P 500 index has dropped 1.77 percent in the same period. Walker & Dunlop shares dropped 1.36 percent to close at $21.80 on Wednesday.