Fair value changes with perception volatility

Fair value and PER of share prices of companies changes very quickly in differing market conditions so I would not utilise it as the only tool for buying a company stock. Nevertheless it's still pretty good indicator of whether the company shares you hold in your portfolio has become overpriced wrt. its earnings, market outlook/ projections and regional peers..

Meanwhile a look at some of the companies mentioned by friends....
QL Reso ( nta 92, Q/Q 3.9/ 3.3 sen ). It's overpriced, trading at RM 2.60 and would be one of the stocks I'll go short on. Fair value RM 1.60 to 1.80
Supermax (nta 212, Q/Q 11/10/ 7/ 6 sen). Trading close to PE 11 at RM 2.80, rebounding from RM 2.30 range last week. Worth a nibble below RM 2, screaming buy at RM 1.20 w/ PE 5
HS Plant (nta 230, QQ 5/ 7/ 7/ 9 sen ) Trading at RM 2.40, it recovers everytime it plunges to RM 2 level... This is one company worth looking at when share price plunges below RM 2. Whack hard at RM 1.50 range...