The following video is part of our "Motley Fool Conversations" series, in which industrials editor/analyst Isaac Pino and research analyst Lyons George discuss topics across the investing world.

In today's edition, Isaac and Lyons discuss JPMorgan's recent announcement that a London-based trader lost $2 billion on bets made during the first quarter. At a time when big banks have been pushing back against greater regulation, this news reverberated through the markets and sent shares of JPMorgan tumbling last Friday. The announcement weighed on the Dow index through early trading Monday morning as well. However, the two largest banks in the Dow, JPMorgan and Bank of America, only make up a combined 2.5% of the total index, so perhaps the market was broadly more concerned over recent developments in Europe. Investors are already weary of exposure to European markets, and the so-called "London Whale" trade did little to assuage their fears.

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