NEW YORK (TheStreet) -- Here are 10 things you should know for Tuesday, Feb. 24:

1. -- U.S. stock futures aren't moving much as investors await Federal Reserve Chair Janet Yellen's Congressional testimony starting Tuesday.

European stocks were mixed on Tuesday as Greece sought to finalize a deal for its debt with the E.U. and investors awaited Yellen's comments on the Fed's plans.

2. -- The economic calendar in the U.S. on Tuesday includes the S&P/Case-Shiller home price index release at 9 a.m., the Consumer Confidence Index update at 10 a.m., and Fed Chair Janet Yellen's two-day address to Congress starting at 10 a.m.

3. -- U.S. stocks on Monday closed mixed, but didn't move much. Investors seemed to be waiting on major U.S. data releases later in the week, and for Federal Reserve Chair Janet Yellen's two-day address to Congress starting Tuesday.

The S&P 500 (SPY) dipped 0.03% to 4,960.97. The Nasdaq (QQQ) rose 0.1% to 4,960.97. The Dow Jones Industrial Average (DIA) sank 0.13% to 18,116.84.

4. -- Investors eagerly await the beginning of Fed Chair Janet Yellen's Congressional testimony for her twice-annual two-day session. She will appear before the Senate Banking Committee on Tuesday; Wednesday she will appear before the House Financial Services Committee.

Yellen will likely be asked about the timing of the Fed's anticipated increase in interest rates, which it has not raised since 2006. Some commentators think the Fed will raise rates in June; others suggest it may be September. The Fed will likely delay raising rates if the larger economy does not seem to be doing well.

Yellen's terminology and tone will be closely parsed throughout the market. Members of Congress may push for more transparency at the Fed.

5. --Home Depot (HD - Get Report) reported its earnings before the opening bell. The home improvement chain increased fourth-quarter profit by 36% and will buy back $18 billion in shares, it said. Net sales were up 8.3% to $19.16 billion for the quarter, Home Depot said.

In premarket trading, Home Depot shares were up 1.1% to $113.52.

6. -- Target (TGT - Get Report) has ignited an online shipping price war in an attempt to get a larger piece of the market. Amazon (AMZN - Get Report) , Best Buy (BBY - Get Report) and Wal-Mart (WMT - Get Report) all may lose out on sales as a result of the move.

Target will offer free shipping to all orders of $25 or more. Amazon and Best Buy don't offer free shipping unless customers buy $35 worth of merchandise. Wal-Mart requires a $50 purchase for free shipping.

Target updated its e-commerce platform in 2014, and seeks to push more consumers to order via mobile devices. Target shares were stable in premarket trading.

7. -- Comcast (CMCSA - Get Report) , Hewlett-Packard (HPQ - Get Report) and Office Depot (ODP - Get Report) all report earnings Tuesday. All are moving in premarket trading. Comcast is down 0.41%, HP is up 0.81% and Office Depot is up 2.33% before the opening bell.

8. -- The Greek government has taken another step toward locking in its four-month debt extension deal. The European Commission said Tuesday that a list of Greek proposals for changes in the country's economy matches what the eurozone finance ministers want.

The deal may still face further hurdles as the newly elected left-leaning Greek government tries to convince the Greek people that the deal is acceptable.

9. -- At least 10 large banks are under investigation for rigging the precious metals market. The Wall Street Journal reported that the Justice Department's antitrust division is looking into the pricing of gold, silver, platinum and precious metals.

A similar probe in Europe was dropped for lack of evidence.

10. -- Krispy Kreme (KKD) is opening its 1,000th store. The company is giving away one free doughnut to the first 1,000 customers at each store Tuesday. Krispy Kreme now has stores in 24 countries.

Krispy Kreme stock is up 17.4% over the past year and 0.86% for the day Monday, to $21.09.

-- Written by Nora Morrison

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Nora Morrison is an editor, writer and researcher on music, popular culture and business. She is an associate editor at TheStreet, and is on Twitter at No Ticker.