Extreme volatile stocks:
1. Solar:
TSL
ENER
STP
YGE
SPWRA
LDK
.....
2. Commodity:
PCX
AKS
CENX
STLD
X
FCX
ANR
ABX
EGO
NEM
FEED
SEED
AZC
...
3. China stocks:
CAGC
CAAS
FUQI
RINO
GAME
CHNR
FUQI
4. Others:
CROX
SANM
TTMI
FLEX
YRCW
AIG
FITB
STEC
AONE
BRCD
LEN
HOV
.............
Hope that gelps.