SOMETIMES there seems to be no rhyme or reason to the markets – and Rolls-Royce's share price this week is a case in point.

Despite posting record profits last week, over the past seven days the value of the Derby aero engine-maker has fallen by 4p, making it the only business out of the top 10 local listed companies to lose ground.

Topping the list is Somercotes chocolate-maker Thorntons, which is due to announce its half-year results today. The firm struggled for sales over the festive period as trading at its own high street stores remained tough.

Investors will be hoping consumers will have shown the firm some love in the run up to Valentine's Day, which is a key period for sales.

1. THORNTONS: Up from 15p to 17p, a rise of 2p or 13.3%. (London Stock Exchange FTSE Food and Drug Retailers).

2. SPIRIT PUB COMPANY: Up from 51.5p to 56.25p, a rise of 4.75p or 9.2%. (London Stock Exchange FTSE SmallCap Index).

3. BOMBARDIER: Up from £2.94 to £3.06, a rise of 12p or 4.1%. (Listed on the Frankfurt Stock Exchange as Bombardier Inc).

4. RECKITT BENCKISER: Up from £34.08 to £35.13, a rise of £1.05 or 3.1%. (London Stock Exchange FTSE 100).

5. UNILEVER: Up from £20.24 to £20.69, a rise of 45p or 2.2%. (London Stock Exchange FTSE 100).

6. TOYOTA: Up from £24.92 to £25.45, a rise of 53p or 2.1%. (Frankfurt Stock Exchange).

7. MOLSON COORS: Up from £27.50 to £27.72, a rise of 22p or 0.8%. (Listed on the Dow Jones).

8. MARSTON'S: Up from 98.75p to 99.3p, a rise of 0.55p or 0.6%. (London Stock Exchange FTSE 250).

9. PUNCH TAVERNS: No change at 11.5p. (London Stock Exchange FTSE SmallCap Index).

10. ROLLS-ROYCE: Down from £7.83 to £7.79, a fall of 4p or 0.5%. (London Stock Exchange FTSE 100).

Stock market prices taken at 9am yesterday, compared to 9am on Tuesday, February 7.