on speculation in a sentence

Examples

1. Many investors had bought heavily on speculation about the accord.
2. Crude slumped on speculation Iraqi oil exports will resume shortly.
3. A Nissan spokesman said the story was based on speculation.
4. Traders were pushing prices lower on speculation about a delay.
5. Oil drilling companies fell on speculation that profits may decline.
6. Hargett said the company does not comment on speculation.
7. Both companies said they would not comment on speculation.
8. We are focusing on the playoffs, not on speculation.
9. ON SPECULATION ABOUT HIS RETIREMENT : " It's remarkable.
10. Edelman wouldn't comment on speculation he's considering Accor.