What you need to know on Wall Street right now

Federal Reserve Chair Janet Yellen is back in Congress on Tuesday for the first day of her semiannual testimony on monetary policy.

YELLEN: Waiting too long to raise interest rates is unwise and could cause a recession
Yellen says an Obamacare repeal could have "a significant impact on spending" and the US economy
Yellen says reducing the regulatory burden is a "legitimate and important goal" and bank stocks are rising
Check back here for the latest news from the hearing as it unfolds

In related news, President Trump's vast power to reshape the Fed will be the next major source of uncertainty for markets, according to Business Insider's Pedro da Costa.

Steven Mnuchin, Trump's pick for Treasury secretary, was confirmed by the Senate after fierce opposition by Democrats. Investors around the world are freaking out about Trump's policies, according to Bank of America Merrill Lynch. And in an internal meeting, Wall Street Journal editor-in-chief Gerry Baker vehemently defended the paper’s Trump coverage.

high-profile fund sent a letter explaining all the reasons it lost money last year, and why it is going to do better this time. nother portfolio manager has left struggling hedge fund Folger Hill.

Andemployees at the world's largest hedge fund use an app to rate each other on over 100 traits — here's how it works.

It's Valentine's day.

The world's most romantic hotels
14 ways an economist might say "I love you"
Here's when you're probably getting married
Here's when you're probably getting divorced

is in talks to sell its European business Aetna and Humana have called off their $34 billion merger

In the healthcare sector, Congress went after a drugmaker for pricing a decades-old drug at $89,000 — and now the company is putting its launch on hold. And a competitor to the EpiPen is officially back on the market.

Swiss watchmaker Vacheron Constantin is trying to win millennials by selling $45,000 watches online.

Lastly, these are the watches worn by some of the most powerful men in finance.

Greece is getting Rothschild to fight its corner -

2017 is going to witness a rebound in the IPO market - The initial public offering market stumbled last year amid stock market volatility, presidential election jitters, and a public-private valuation disconnect for tech companies. But market participants expect a rebound in 2017.

An "investment mania" is propelling Canada's home prices to their biggest gain since 2007 -

Here's why homeownership is plunging in the US -

Tesla is enjoying an epic stock surge - Tesla.

Homes in these 10 markets are selling like hotcakes - Housing markets in the western part of the United States remain hot. Data released on Tuesday by brokerage firm Zillow showed eight of the 10 hottest US markets are located west of the Mississippi River.

PRESENTING: The 11 states that benefit most from immigration - President Donald Trump has not relented on the hardline immigration positions that served as the cornerstone of his presidential campaign.