1.   It is a distinctive feature of these companies that their shares usually trade on the stock market at a discount to their net asset values.

2.   Grand Trunk shares traded at around three times their nominal value.

3.   Analysts said gold shares usually trade in tandem with changes in the price of gold.

4.   Argentine oil company Yacimientos Petroliferos SA shares have been trading at the Sao Paulo stock exchange for the past two years.

5.   As a result, shares are trading at historic premiums to book value.

6.   Aspec shares will trade on the Nasdaq stock exchange under the symbol ASPC.

7.   As such, the shares may trade at a premium or a discount to their net asset value.

8.   At current prices, the shares trade just shy of two times their book value, or assets minus liabilities.

9.   Boeing shares are trading near all-time highs, bolstered by speculation that the recent boom in orders for new jets will continue.