Three people have been handed custodial sentences after pleading guilty to charges of insider dealing.
James Sanders, a director of specialist Contract for Difference (CFD) brokerage Blue Index, was sentenced today to four years in custody and disqualified as a director for five years.
Meanwhile, his wife Miranda Sanders and co-director James Swallow were both sentenced to ten months in custody.
The three had pleaded guilty earlier this year to a total of 18 charges based around insider dealing in US securities between October 2006 and February 2008.
Their actions were contrary to section 52 of the Criminal Justice Act 1993 and, passing sentence, Mr. Justice Simon said they were "deliberate and calculated acts of dishonesty".
Tracey McDermott, acting director of enforcement and financial crime division, said: "These three individuals funded very comfortable lifestyles by cheating the system and other honest investors.
"No doubt as they prepare to spend their first night behind bars they will be reflecting on the consequences of their greed.
"Others who might be tempted to do the same should be in no doubt about our continued commitment to use all of the tools at our disposal to tackle those who abuse the market."
The total profits generated by the defendants were approximately £1.9m, while the total profits generated by the clients of Blue Index were approximately £10.2m.
Confiscation and costs orders will be dealt with at a later date.
£300bn of liabilities
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Transfer from occupational scheme
Appointed by FCA and PSR boards