Wall Street Roundup: JPMorgan’s Abacus? The perils of shorting.

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After the election. As voters head to the polls, Wall Street investors are thinking about what the results -- and the likely gridlock -- will mean for the future.

JPMorgan’s Abacus? ProPublica learned that the Securities and Exchange Commission is investigating JPMorgan Chase for a deal that looks a lot like the Abacus deal that landed Goldman Sachs in trouble earlier this year.

Goldman suit goes ahead. A judge rejected a request by Goldman Sachs trader Fabrice Tourre to have the SEC’s lawsuit against him thrown out.

Ominous bank deal. The surprising news that Wilmington Trust is selling itself to M&T at a sharp discount has some investors worried that the real estate problems that forced Wilmington Trust to sell may soon surface at other banks.

The perils of shorting. A hedge fund manager has switched from taking short positions to going long after concluding that the government’s monetary policy makes picking stocks to short too difficult.

-- Nathaniel Popper in New York