The five cited FINRA member firm respondents are indirect subsidiaries of ING Groep N.

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Capital One recently completed the acquisition of ING Direct USA from the ING Groep.

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Some of the world's biggest insurers are expected to make offers for ING Groep's Asian life-insurance arm by Friday.

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Other competitors in the financial sector include: MetLife (MET), ING Groep N.

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Aetna also owns financial services and international businesses, which it is in the process of selling to the Netherlands' ING Groep .

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Allstate, MetLife Inc. and ING Groep NV are among other insurers also trying new approaches that aim to sell policies more cost-effectively to the middle class.

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Shares of ING Groep N.

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