Despite the runup in the market, some companies are still in the PE buy zone - trading below their average historical PEs. We took a look at five stocks that are in this PE buy range, and also have a high Durability Score. You can see the Buy Zone screener tracking historical PE for the full list.  

1. Security and Intelligence Services (SIS): This security services company has traded below its current PE only 9% of its total trading days. The company has gained 29% over the last year, not a significant runup. It has a durability score of 80, with positive net profit and revenue growth YoY in its most recent quarter. 

2. Sharda Cropchem: This agrochem business has got some investor attention in recent weeks, with the Momentum Score moving into the green. However the stock has traded below its current PE only 14% of its trading days. This is a low volatility stock that tends to maintain its gains for periods of time when it moves up, since rural demand patterns tend to be less volatile than other sectors.

3. Coal India: This coal and energy company has seen a recent upswing in its share price, with its Momentum Score back in the green and rising 11% over the past month. At its current PE, it has traded below this level for 25% of its trading days. The company delivered a strong performance in August, with resilient volumes despite a weak month, reduction in dues from state power generators and good E-auction revenues according to analysts. 

4. Castrol India: This oil lubricant stock is another potentially underpriced company in PE compared to historical levels. Even as its share price has picked up in recent weeks, it trades below current PE levels for just 15% of its trading days. While it may look like a good pickup at its current levels, risks remain - the drag in the auto sector due to supply constraints however, remains a key negative for companies like Castrol. 

5. Edelweiss Financial Services:  Financial services have been on the upswing during the lockdown, although Edelweiss' stock was an underperformer, especially relative to the Nifty index. The company jumped back into the green in net profit numbers only in the last two quarters. It has traded below its current PE for just 20% of total trading days.