Some economists blame speculative transactions such as "naked short selling" for plunging the world economy into a financial crisis.

VOA: standard.2010.05.19

World stock prices fell on Wednesday after Germany approved new regulations to limit speculative selling of euro-dominated government bonds.

VOA: standard.2010.05.19

Besides expanding the Federal Reserve's powers to police banks and speculative markets, the measure also contains provisions to prevent financial institutions from becoming too big to fail.

VOA: standard.2010.05.21

However,concerns about the stability of Greece , and other financially-troubled European countries, increased after the Standard and Poor's credit rating agency downgraded Greek bonds to speculative or "junk" status Tuesday.

VOA: standard.2010.04.28

"You have to avoid being speculative in law.

VOA: standard.2009.04.18