NEW YORK (TheStreet) -- Warren Buffett is considered the most respected and successful investor. Often called "The Oracle of Omaha" for his impressive investing prowess, he is among the world's wealthiest people.

Buffett studied under the legendary Benjamin Graham at Columbia University who had a major impact on Buffett's life and investment strategies.

Watch the video below for some interesting facts about self-made billionaire, Warren Buffett:

Buffett is chairman of Omaha, Nebraska-based Berkshire Hathaway Inc (BRK.A), which he built from a textile company into a major corporation with a market cap of more than $350 billion. Under Buffett's leadership, Berkshire shares averaged a 19.7% compounded annual gain in per share book value from 1965-2013.

He follows a value investing strategy that is an adaptation of Graham's approach: Discipline, patience, and value consistently outperforms the market. His moves are followed by investors worldwide. Buffett seeks to acquire great companies trading at a discount to their intrinsic value, and to hold onto them for a long time. He will only invest in businesses that he understands, and always insists on a margin of safety.

Regarding the types of businesses Berkshire likes to purchase, Buffett has said, "We want businesses to be ones that we can understand, with favorable long-term prospects, operated by honest and competent people, and available at a very attractive price."

Buffett has some stake in the banking sector, as bank stocks make up 20% of the top 25 stocks in his portfolio as of December 31, 2014.

The banking sector has risen 8.55% year-over-year as of March 16, 2015, according to Fidelity, with a total market cap of $3.22 trillion. Names such as Wells Fargo  (WFC - Get Report), J.P. Morgan Chase  (JPM), Bank of America  (BAC), and Citigroup  (C) are at the top of the list.

The following are the five banking stocks Warren Buffett loves, as evidenced by their presence in his portfolio.

5. M&T Bank  (MTB - Get Report)

Shares Held by Warren Buffett's Berkshire Hathaway:  5,382,000 shares
Value of Holdings:  $676 million
Portfolio Weighting as of 12/31/2014:  0.62%

M&T Bank is a U.S. bank holding company founded in 1856. As of 2014, M&T Bank held $134.4 billion in assets, which made it the 17th largest commercial bank holding company in the U.S.

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TheStreet Ratings team rates M & T BANK CORP as a Buy with a ratings score of A-. TheStreet Ratings Team has this to say about their recommendation:

"We rate M & T BANK CORP (MTB) a BUY. This is based on the convergence of positive investment measures, which should help this stock outperform the majority of stocks that we rate. The company's strengths can be seen in multiple areas, such as its revenue growth, increase in net income, expanding profit margins, increase in stock price during the past year and growth in earnings per share. We feel these strengths outweigh the fact that the company has had somewhat disappointing return on equity."

You can view the full analysis from the report here: MTB Ratings Report

4. Bank of New York Mellon (BK - Get Report)

Shares Held by Warren Buffett's Berkshire Hathaway:  22,013,000 shares
Value of Holdings:  $893 million
Portfolio Weighting as of 12/31/2014:  0.82%

Bank of New York Mellon provides various financial products and services in the U.S. and internationally.

Its Investment Management segment provides institutional, intermediary, retirement and retail investment management, distribution, and related services.

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TheStreet Ratings team rates BANK OF NEW YORK MELLON CORP as a Buy with a ratings score of A-. TheStreet Ratings Team has this to say about their recommendation: 

"We rate BANK OF NEW YORK MELLON CORP (BK) a BUY. This is based on the convergence of positive investment measures, which should help this stock outperform the majority of stocks that we rate. The company's strengths can be seen in multiple areas, such as its revenue growth, reasonable valuation levels, good cash flow from operations, expanding profit margins and solid stock price performance. We feel these strengths outweigh the fact that the company has had sub par growth in net income."

You can view the full analysis from the report here: BK Ratings Report

3. Goldman Sachs  (GS - Get Report)

Shares Held by Warren Buffett's Berkshire Hathaway: 12,632,000 shares
Value of Holdings: $2.448 billion
Portfolio Weighting as of 12/31/2014: 2.2%

Goldman Sachs provides investment banking, securities, and investment management services to corporations, financial institutions, governments, and high-net-worth individuals worldwide.

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TheStreet Ratings team rates GOLDMAN SACHS GROUP INC as a Buy with a ratings score of A-. TheStreet Ratings Team has this to say about their recommendation: 

"We rate GOLDMAN SACHS GROUP INC (GS) a BUY. This is based on the convergence of positive investment measures, which should help this stock outperform the majority of stocks that we rate. The company's strengths can be seen in multiple areas, such as its attractive valuation levels, expanding profit margins, good cash flow from operations and solid stock price performance. We feel these strengths outweigh the fact that the company has had sub par growth in net income."

You can view the full analysis from the report here: GS Ratings Report

2. U.S. Bancorp (USB - Get Report)

Shares Held by Warren Buffett's Berkshire Hathaway:  80,094,000 shares
Value of Holdings:  $3.6 billion
Portfolio Weighting as of 12/31/2014:  3.3%

U.S. Bancorp, a financial services holding company, provides a range of financial services in the U.S.

Its services include lending and depository, cash management, capital market, and trust and investment management services, as well as merchant and ATM processing, mortgage banking, and brokerage services.

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TheStreet Ratings team rates U S BANCORP as a Buy with a ratings score of A-. TheStreet Ratings Team has this to say about their recommendation: 

"We rate U S BANCORP (USB) a BUY. This is based on the convergence of positive investment measures, which should help this stock outperform the majority of stocks that we rate. The company's strengths can be seen in multiple areas, such as its revenue growth, expanding profit margins, increase in stock price during the past year, growth in earnings per share and increase in net income. We feel these strengths outweigh the fact that the company shows weak operating cash flow."

You can view the full analysis from the report here: USB Ratings Report

1. Wells Fargo  (WFC - Get Report)

Shares Held by Warren Buffett's Berkshire Hathaway:  463,458,000 shares
Value of Holdings:  $25.407 billion
Portfolio Weighting as of 12/31/2014:  23.2%

Wells Fargo provides retail, commercial, and corporate banking services to individuals, businesses, and institutions.

The company's Community Banking segment offers checking and market rate accounts, savings and time deposits, individual retirement accounts, and remittances; and lines of credit, auto floor plan lines, equity lines and loans, equipment and transportation loans, education and residential mortgage loans, and credit and debit cards.

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Wells Fargo is a core holding of Jim Cramer's Action Alerts PLUS Charitable Trust Portfolio. During the most recent weekly roundup, this is what Jim Cramer, Portfolio Manager & Jack Mohr, Director of Research - Action Alerts PLUS had to say about the stock:

The shares moved higher this week following impressive Comprehensive Capital Annual Review (CCAR) results. The bank did not release its buyback plan but raised its quarterly dividend to $0.375 from $0.35. We appreciate the simplicity in this story, and are glad we never have to worry about being surprised by its Stress Test results. Last week, the Fed reported that WFC's Tier 1 Common Ratio under the severe adverse scenario was 9.5%, substantially higher than both its super-regional and bulge-bracket brethren. To analogize the situation, Wells Fargo is the "teacher's pet" of the regulators; the best-in-class bank that offers transparency, stability and simplicity. It is not dragged down by trading, FX or litigation charges and, instead, has positioned itself incredibly well for the inevitable uptick in rates. Until then, we believe WFC will be buoyed by strong loan demand and further capital efficiencies. We will look to further accumulate on any weakness. It is our largest position, and our target is $63.

- Jim Cramer and Jack Mohr, 'Weekly Roundup' originally published 3/13/2015 on ActionAlertsPLUS.com.

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TheStreet Ratings team rates WELLS FARGO & CO as a Buy with a ratings score of A. TheStreet Ratings Team has this to say about their recommendation: 

"We rate WELLS FARGO & CO (WFC) a BUY. This is based on the convergence of positive investment measures, which should help this stock outperform the majority of stocks that we rate. The company's strengths can be seen in multiple areas, such as its revenue growth, solid stock price performance, growth in earnings per share, expanding profit margins and increase in net income. We feel these strengths outweigh the fact that the company shows weak operating cash flow."

You can view the full analysis from the report here: WFC Ratings Report