The overall ratings of 15 Commercial Banking stocks are down on Portfolio Grader this week. Each of these rates a “D” (“sell”) or “F” overall (“strong sell”).

First Financial (NASDAQ:THFF) ratings are on the decline this week as the company earns an F (“strong sell”). Last week, it received a D (“sell”). First Financial is a multi-bank holding company that serves customers through offices located in Indiana and Illinois. For more information, get Portfolio Grader’s complete analysis of THFF stock.

First Citizens Bancshares (NASDAQ:FCNCA) experiences a ratings drop this week, going from last week’s D to an F. First Citizens BancShares is the holding company for First-Citizens Bank & Trust Company and Ironstone Bank. The stock also gets an F in Sales Growth. For a full analysis of FCNCA stock, visit Portfolio Grader.

Shinhan Financial Group (NYSE:SHG) is on the decline this week, earning a D (“sell”) after receiving a C (“hold”) last week. Shinhan Financial Group is a financial holding company. To get an in-depth look at SHG, get Portfolio Grader’s complete analysis of SHG stock.

Lakeland Financial (NASDAQ:LKFN) gets weaker ratings this week as last week’s C drops to a D. Lakeland Financial is a bank holding company. For more information, get Portfolio Grader’s complete analysis of LKFN stock.

Zions Bancorporation (NASDAQ:ZION) earns a D this week, falling from last week’s grade of C. Zions is a financial holding company that owns and operates eight commercial banks in the United States. The stock also gets an F in Earnings Momentum. To get an in-depth look at ZION, get Portfolio Grader’s complete analysis of ZION stock.

The rating of Fulton Financial (NASDAQ:FULT) slips from C to a D. Fulton Financial is a multi-bank financial holding company. For a full analysis of FULT stock, visit Portfolio Grader.

Comerica’s (NYSE:CMA) rating weakens this week, dropping to a D versus last week’s C. Comerica is a financial services company operating in business, retail, and wealth management. For more information, get Portfolio Grader’s complete analysis of CMA stock.

Slipping from C to a D rating, Fifth Third Bancorp (NASDAQ:FITB) takes a hit this week. Fifth Third Bancorp is a diversified financial services company that operates banking centers in the Midwestern and Southeastern regions of the United States. To get an in-depth look at FITB, get Portfolio Grader’s complete analysis of FITB stock.

This week, Westamerica (NASDAQ:WABC) drops from a D to an F rating. Westamerica is a bank holding company that provides a range of banking services to individual and corporate customers in Northern and Central California. The stock also rates an F in Sales Growth. For a full analysis of WABC stock, visit Portfolio Grader.

The rating of Associated Banc-Corp (NASDAQ:ASBC) declines this week from C to a D. Associated Banc offers various banking and financial services to individuals and businesses primarily in Wisconsin, Illinois, and Minnesota. To get an in-depth look at ASBC, get Portfolio Grader’s complete analysis of ASBC stock.

This week, City National’s (NYSE:CYN) rating worsens to a D from the company’s C rating a week ago. City National provides banking, investing, and trust services to its clients. For a full analysis of CYN stock, visit Portfolio Grader.

Independent Bank Corp. (NASDAQ:INDB) earns a D this week, moving down from last week’s grade of C. Independent Bank is the holding company for Rockland Trust. As of Jan. 16, 2013, 11.4% of outstanding Independent Bank Corp. shares were held short. For more information, get Portfolio Grader’s complete analysis of INDB stock.

UMB Financial (NASDAQ:UMBF) is having a tough week. The company’s rating falls from C to a D. UMB Financial is a multi-bank holding company that provides banking and other financial services. To get an in-depth look at UMBF, get Portfolio Grader’s complete analysis of UMBF stock.

This is a rough week for First Niagara Financial Group (NASDAQ:FNFG). The company’s rating falls to F from the previous week’s D. First Niagara Financial Group is a bank holding company. For a full analysis of FNFG stock, visit Portfolio Grader.

KeyCorp (NYSE:KEY) earns a D this week, falling from last week’s grade of C. KeyCorp provides a wide range of retail and commercial banking, commercial leasing, investment management, consumer finance and investment banking products and services to individual, corporate and institutional clients. For more information, get Portfolio Grader’s complete analysis of KEY stock.

Louis Navellier’s proprietary Portfolio Grader stock ranking system assesses roughly 5,000 companies every week based on a number of fundamental and quantitative measures. Stocks are given a letter grade based on their results — with A being “strong buy,” and F being “strong sell.” Explore the tool here.