STOCKS STAY PUT: Here's what you need to know

Stocks swung between green and red Wednesday, finishing largely unchanged after oil took a tumble and the threat of a possible government shutdown if no government spending deal is reached this week.

Here's the scoreboard:

• S&P 500: 2,628.59 (-0.04%)
• Dow: 24,152.50 (-0.12%)
• Nasdaq: 6,778.031 (+0.23%)
• Oil: $55.89 (-2.73%)
• 10-year treasury bond: 2.35% (-0.83)

1. UnitedHealth Group Inc said it would buy kidney care services provider DaVita Inc's medical unit for about $4.9 billion cash, as the health insurer looks to expand operations in outpatient care services.
2. Home Depot is buying back $15 billion worth of its stock from shareholders.
3. Major Wall Street firms, including Goldman Sachs, say to expect more M&A activity in 2018 thanks to the GOP tax plan and robust cash levels.
4. Tim Cook gave a big speech about apps in China, but the stock stayed flat.

In other news…

• Bitcoin topped $12,000 for the first time and is gunning towards $13,000.
• Aetna wants to create a 'Genius Bar' at CVS, and it could forever change the way Americans access healthcare.
• A small New York City chain is siphoning off hungry burrito eaters as Chipotle struggles.
• It's now easier than ever to bet on the 'retail apocalypse' thanks to a new Decline of the Retail Store ETF from ProShares.

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