what is the most performance mid cap stock between october 15 2009 and october 15 2012

First Majestic Silver (AG) had the highest return between October 15, 2009 and October 15, 2012 by a mid-cap US stock, returning 635.3%.

ASSET DATE % RETURN
First Majestic Silver (AG)
10/15/2009 - 10/15/2012
635.3%
Jazz Pharmaceuticals (JAZZ)
10/15/2009 - 10/15/2012
613.77%
Cirrus Logic (CRUS)
10/15/2009 - 10/15/2012
582.22%
Sandstorm Gold Ltd N (SAND)
10/15/2009 - 10/15/2012
529.24%
Patrick Industries (PATK)
10/15/2009 - 10/15/2012
458.03%
B2Gold (BTG)
10/15/2009 - 10/15/2012
430.9%
Dillards (DDS)
10/15/2009 - 10/15/2012
414.15%
Sirius XM (SIRI)
10/15/2009 - 10/15/2012
387.81%
OSI Systems (OSIS)
10/15/2009 - 10/15/2012
339.65%
Acadia Healthcare (ACHC)
10/15/2009 - 10/15/2012
336.54%
PriceSmart (PSMT)
10/15/2009 - 10/15/2012
334.98%
Dorman Products (DORM)
10/15/2009 - 10/15/2012
329.33%
Polaris Industries (PII)
10/15/2009 - 10/15/2012
300.99%
Nexstar Broadcasting (NXST)
10/15/2009 - 10/15/2012
294.88%
Six Flags Entertainment (FUN)
10/15/2009 - 10/15/2012
277.84%
Under Armour Inc A (UAA)
10/15/2009 - 10/15/2012
276.08%
Golar LNG (GLNG)
10/15/2009 - 10/15/2012
264.49%
IPG Photonics (IPGP)
10/15/2009 - 10/15/2012
263.37%
Axos Financial (AX)
10/15/2009 - 10/15/2012
246.63%
Bath & Body Works (BBWI)
10/15/2009 - 10/15/2012
238.44%
Silicon Motion Technology (SIMO)
10/15/2009 - 10/15/2012
235.33%
Foot Locker (FL)
10/15/2009 - 10/15/2012
230.38%
Novanta (NOVT)
10/15/2009 - 10/15/2012
229.63%
LivaNova (LIVN)
10/15/2009 - 10/15/2012
226.3%
Perrigo (PRGO)
10/15/2009 - 10/15/2012
219.56%
Mid-cap stocks are treated as having a market cap between $2B and $10B.