The grades of 17 Insurance stocks are on the rise this week on Portfolio Grader. Each of these stocks is rated an “A” (“strong buy”) or “B” overall (“buy”).

Alleghany Corporation (Y) shows solid improvement this week. The company’s rating rises from a C to a B. Alleghany Corporation engages in the property and casualty, and surety insurance business in the United States. The company also gets A’s in sales growth, earnings growth, earnings surprise, and free cash flow. For more information, get Portfolio Grader’s complete analysis of Y stock.

This week, Enstar Group Limited’s (ESGR) ratings are up from a C last week to a B. Enstar Group Limited acquires and manages insurance and reinsurance companies in run-off. The company also gets A’s in sales growth, operating margin growth, earnings growth, earnings surprise, earnings momentum, and free cash flow. For more information, get Portfolio Grader’s complete analysis of ESGR stock.

RenaissanceRe Holdings Ltd. (RNR) improves from a B to a A rating this week. RenaissanceRe Holdings Ltd. provides reinsurance and insurance coverages and related services. The company also gets A’s in sales growth, earnings growth, earnings momentum, and free cash flow. For more information, get Portfolio Grader’s complete analysis of RNR stock.

Arch Capital Group Ltd. (ACGL) earns a B this week, jumping up from last week’s grade of C. Arch Capital Group Ltd. writes insurance and reinsurance on a worldwide basis. The company also gets A’s in sales growth, earnings growth, earnings momentum, and free cash flow. For more information, get Portfolio Grader’s complete analysis of ACGL stock.

The rating of Allstate Corporation (ALL) moves up this week, rising from a C to a B. Allstate Corporation is engaged in the personal property and casualty insurance business, as well as the life insurance, retirement, and investment products business. For more information, get Portfolio Grader’s complete analysis of ALL stock.

Primerica, Inc. (PRI) is seeing ratings go up from a C last week to a B this week. Primerica, Inc. distributes financial products to middle income households in North America. The company also gets A’s in return on equity and free cash flow. For more information, get Portfolio Grader’s complete analysis of PRI stock.

Marsh & McLennan Companies, Inc. (MMC) gets a higher grade this week, advancing from a B last week to a A. Marsh & McLennan Companies, Inc. is a global professional services firm providing advice and solutions in the areas of risk, strategy and human capital. The company also gets A’s in return on equity. For more information, get Portfolio Grader’s complete analysis of MMC stock.

This is a strong week for Brown & Brown, Inc. (BRO). The company’s rating climbs to A from the previous week’s B. Brown & Brown, Inc. engages in the marketing and sale of insurance products and services in the United States. For more information, get Portfolio Grader’s complete analysis of BRO stock.

This week, James River Group Holdings Ltd (JRVR) pushes up from a B to a A rating. For more information, get Portfolio Grader’s complete analysis of JRVR stock.

Selective Insurance Group, Inc. (SIGI) boosts its rating from a C to a B this week. Selective Insurance Group, Inc. offers property and casualty insurance products and services the eastern and midwestern regions of the United States. The company also gets A’s in free cash flow. For more information, get Portfolio Grader’s complete analysis of SIGI stock.

Global Indemnity Ltd. Class A’s (GBLI) ratings are looking better this week, moving up to a B from last week’s C. Global Indemnity Ltd. Class A provides insurance and reinsurance products and services in the United States. The company also gets A’s in earnings revisions and earnings surprise. For more information, get Portfolio Grader’s complete analysis of GBLI stock.

This week, Assured Guaranty Ltd.’s (AGO) ratings are up from a B last week to a A. Assured Guaranty Ltd. provides credit enhancement products to the public finance, structured finance, and mortgage markets. The company also gets A’s in earnings growth, earnings revisions, earnings surprise, earnings momentum, and free cash flow. For more information, get Portfolio Grader’s complete analysis of AGO stock.

Universal Insurance Holdings, Inc. (UVE) shows solid improvement this week. The company’s rating rises from a D to a B. Universal Insurance Holdings, Inc. operates as an insurance holding company specializing in homeowners’ insurance products. The company also gets A’s in return on equity and free cash flow. For more information, get Portfolio Grader’s complete analysis of UVE stock.

Ambac Financial Group, Inc. (AMBC) boosts its rating from a B to a A this week. The company also gets A’s in sales growth, operating margin growth, earnings revisions, earnings surprise, earnings momentum, return on equity, and free cash flow. For more information, get Portfolio Grader’s complete analysis of AMBC stock.

OneBeacon Insurance Group, Ltd. Class A (OB) gets a higher grade this week, advancing from a C last week to a B. OneBeacon Insurance Group, Ltd. Class A offers specialized insurance products and services. The company also gets A’s in earnings surprise. For more information, get Portfolio Grader’s complete analysis of OB stock.

State National Cos., Inc.’s (SNC) ratings are looking better this week, moving up to a A from last week’s B. The company also gets A’s in earnings revisions, earnings surprise, return on equity, and free cash flow. For more information, get Portfolio Grader’s complete analysis of SNC stock.

Kingstone Companies, Inc. (KINS) earns a A this week, jumping up from last week’s grade of B. Kingstone Companies, Inc. offers homeowners, automobile, fire, canine legal liability, business owner, and umbrella coverages. The company also gets A’s in earnings revisions, earnings surprise, and free cash flow. For more information, get Portfolio Grader’s complete analysis of KINS 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.