There's this article in Outlook Money:

Has Your Stock Gone Over The Hill?

It lists some "rules"...

The stock is at or above it's fundamental value. (Is this the same as intrinsic value?)
The stock is at the high-end of its P/E range.
The earnings yield is less than that of a bond (post-tax).
Appreciation of the stock's price has made the portfolio lop-sided.
Other sell indicators mentioned are overall euphoria, extraordinary events.

When the stock falls to 80% of its original price!

Nope that may be the time to gamble on bounce

ideally when the market on its upward journey for all time lows, moves up just above the 200DMA and stays above it for some days, one should enter the market and on its downward journey, sell similarly just below its 100 DMA.

In short buy just above the 200dma and sell just below the 100dma

Others may have a different strategy, I follow this and have greatly benefited

Hi marketmover,

Can you please help me understand the above for Praj,

The 200 DMA is 94.13, My Entry is 96.70

The 100 DMA is 95 . The stock has corrected from 112 to 83 in last one month.

I am trying to understand proper entry/exit levels for this stock.

Hi Marketmover,

As mentioned by you where can I find these details for a particular stock. Have been searching these details in various sites without any luck.

Nimo, You can find the 100 dma (100 day moving average) & 200 dma in most technical analysis softwares like chartnexus, metastock and amibroker. But you have to download historical data (for last 100 , 200 days).

Thanks a lot Raghav, I have installed ChartNexus..will start exploring. By the way which one of the three do you prefer?