I wanted to find which S&P 400 Mid Cap stocks had the highest price appreciation in the past year. I used Barchart to sort the Index for those winners. I noticed that the winners weren't stocks that just jumped over night but each had a long and consistent pattern of hitting a series of new highs all during the year.

The list includes:

 SunEdison (NYSE:SUNE) 193.07%,

 RF Micro Devices(NASDAQ:RFMD) 157.66%, 

Salix Pharmaceutical (NASDAQ:SLXP) 137.53%, 

Trinity Industries(NYSE:TRN) 135.24% and 

Skyworks Solutions(NASDAQ:SWKS) 121.96%:

SunEdison (SUNE) 193.07%

Barchart technical indicators:

• 16% Barchart technical sell signal
• Trend Spotter sell signal
• Below its 20 and 50 day moving averages
• 50 new highs and up 193.07% in the last year
• Relative Strength Index 47.89%
• Barchart computes a technical support level at 20.82
• Recently traded at 21.78 with a 50 day moving average of 21.92

RF Micro Devices (RFMD) 157.66%

Bachart technical indicators:

• 100% Barchart technical buy signals
• Trend Spotter buy signal
• Above its 20, 50 and 100 day moving averages
• 63 new highs and up 157.66% in the last year
• Relative Strength Index 71.37%
• Barchart computes a technical support level at 12.28
• Recently traded at 12.84 with a 50 day moving average of 10.77

Salix Pharmaceuticals (SLXP) 137.53%

Barchart technical indicators:

• 88% Barchart technical buy signals
• Trend Spotter buy signal
• Above its 20, 50 and 100 day moving averages
• 34 new highs and up 137.53% in the last month
• Relative Strength Index 72.14%
• Barchart computes a technical support level at 155.44
• Recently traded at 157.88 with a 50 day moving aerae of 137.61

Trinity Industries (TRN) 135.24%

Barchart technical indicators:

• 96% Barchart technical buy signals
• Trend Spotter buy signal
• Above its 20, 50 and 100 day moving averages
• 54 new highs and up 135.24% in the last year
• Relative Strength Index 71.86%
• Barchart computes a technical support level at 47.95
• Recently traded at 50.20 with a 50 day moving average of 44.79

Skyworks Solutions (SWKS) 121.96%

Barchart technical indicators:

• 98% Barchart technical buy signals
• Trend Spotter buy signal
• Above its 20, 50 and 100 day moving averages
• 55 new highs and up 121.96% in the last month
• Relative Strength Index 67.34%
• Barchart computes a technical support level at 55.46
• Recently traded at 56.12 with a 50 day moving average of 51.23