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Commentary ● September 16

Three Marine Transportation Stocks That May Be in Smooth Waters

Rosalio Madrigal

This week, we use AAII’s A+ Investor Stock Grades to provide insight into three marine transportation stocks. With increased fragmentation creating growth opportunities within the marine transportation industry, should you consider the three stocks of Navios Maritime Partners L.P. (NMM), Star Bulk Carriers Corp. (SBLK) and ZIM Integrated Shipping Services Ltd. (ZIM)?

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Ranked P/B Ratio as of 9/17/2026

COMPANY NAME TICKER P/B RATIO
LanzaTech Global, Inc. LNZA 0.30
Regis Corporation RGS 0.35
Imperial Petroleum Inc. IMPP 0.49
StealthGas Inc. GASS 0.52
Shoe Station Group Inc. SHOE 0.53

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Approach: James O'Shaughnessy

James O'Shaughnessy is the founder, chairman and chief investment officer of O'Shaughnessy Asset Management LLC. O'Shaughnessy is considered a pioneer in quantitative equity analysis. O'Shaughnessy has authored several books, including What Works on Wall Street (1997), for which he backtested 44 years of stock market data to find out which quantitative strategies have worked over the years and which haven't.

Top SSR Watchlist Ideas Ranked by
Value Score (as of 9/17/2026)

COMPANY NAME TICKER Value Score
Embecta Corp. EMBC 98
Bread Financial Holdings, Inc. BFH 96
Greenlight Capital Re, Ltd. GLRE 96
Teekay Corporation Ltd. TK 95
Bausch Health Companies Inc. BHC 94

See All 15 Stocks

Stock Grades

A+ Stock Grades

Stocks with grades of B or better across all quant factors as of 9/17/2026.

COMPANY NAME TICKER VALUE GROWTH MOMENTUM EPS REV QUALITY SECTOR
Score Grade Score Grade Score Grade Score Grade Score Grade
CBIZ, Inc. CBZ 65 B 69 B 91 A 70 B 75 B Industrials
Crown Holdings, Inc. CCK 73 B 77 B 61 B 66 B 85 A Materials
Centene Corporation CNC 92 A 89 A 89 A 66 B 71 B Health Care
CONMED Corporation CNMD 70 B 100 A 73 B 71 B 89 A Health Care
Darling Ingredients Inc. DAR 63 B 83 A 92 A 82 A 83 A Consumer Staples

See All 25 Stocks

COMPANY NAME TICKER VALUE GROWTH MOMENTUM EPS REV QUALITY SECTOR
Score Grade Score Grade Score Grade Score Grade Score Grade
Ameresco, Inc. AMRC 40 D 38 D 25 D 35 D 22 D Industrials
American Superconductor Corporation AMSC 20 F 27 D 14 F 35 D 24 D Industrials
Arbe Robotics Ltd. ARBE 8 F 12 F 13 F 26 D 15 F Information Technology
Ardelyx, Inc. ARDX 25 D 29 D 12 F 31 D 35 D Health Care
Ares Management Corporation ARES 10 F 26 D 26 D 26 D 15 F Financials

See All 64 Stocks

Stock Upgrades and Downgrades

Stock Upgrades & Downgrades

Stocks with at least two upgrades or downgrades across all quant factors. Data as of 9/17/2026, compared to previous trading day.

COMPANY NAME TICKER VALUE GROWTH MOMENTUM EPS REV QUALITY SECTOR
Collective Mining Ltd. CNL NA ▲ NA ▲ C ▲ D ▲ F ▲ Materials
DeFi Technologies Inc. DEFT B ▲ NA ▲ F ▲ D ▲ D ▲ Financials
IRSA Inversiones y Representaciones Sociedad Anónima IRS B ▲ B ▲ B ▲ NA ▲ D ▼ Real Estate
lululemon athletica inc. LULU A ▲ B ▲ D ▲ C ▲ A ▲ Consumer Discretionary
LuxExperience B.V. LUXE A ▲ D ▲ B ▲ A ▲ C ▲ Consumer Discretionary

See All 6 Stocks

COMPANY NAME TICKER VALUE GROWTH MOMENTUM EPS REV QUALITY SECTOR
Aeluma, Inc. ALMU F ▲ NA ▲ F ▼ F ▼ D ▲ Information Technology
Actinium Pharmaceuticals, Inc. ATNM A ▲ NA ▲ D ▼ B ▲ C ▼ Health Care
Atara Biotherapeutics, Inc. ATRA NA ▲ NA ▲ B ▼ D ▼ F ▲ Health Care
The Buckle, Inc. BKE B ▼ B ▲ F ▼ B ▲ B ▲ Consumer Discretionary
Carvana Co. CVNA F ▲ D ▲ D ▼ D ▼ C ▲ Consumer Discretionary

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Monthly Top Performing Stock Lists

Top Dividend Growth Stocks for September 2026 | Free List from AAII

AAII's September 2026 dividend stock list identifies top dividend-paying stocks screened for reliable income and long-term growth potential. Download the free list, built on research-backed selection criteria.

By AAII Staff | September 2026

Best Small-Cap Stocks to Watch in September 2026 | Free AAII List

AAII's September 2026 small-cap value stock list identifies undervalued companies with strong fundamentals, screened using disciplined investment criteria. Download the free spreadsheet.

By AAII Staff | September 2026

What Are the Top Growth Stocks to Watch in July 2026?

See July 2026's top growth stocks, including CRWD, JNJ, AZO and ROL which are screened for strong earnings and momentum. Download the full list free

By AAII Staff | July 2026

Top Tech Stocks to Watch in July 2026

Discover top tech stocks for July 2026, including ASML, PEP and AMAT. Learn how to evaluate growth potential and get a free curated stock list.

By AAII Staff | July 2026

Top-Performing Value Stocks to Watch in June 2026

From General Motors and Delta Air Lines to Valero Energy and Fox Corporation, our June 2026 Value Stocks List showcases companies with attractive valuations and strong fundamental characteristics.

By AAII Staff | June 2026

Articles

AAII Stock Ideas,Small Cap Value Investing

Tiny Titans Screen Targets Stocks That Institutions Miss

This micro-cap approach for the more aggressive investor focuses on undervalued stocks with strong relative momentum.

By John Bajkowski, Michael Rose | September 2026

First Cut Stocks,Stock Strategies

Spicy Stocks: High-Beta Stocks Showing Relative Strength

If you are looking for some excitement in your portfolio, these volatile stocks went from laggards to leaders.

By Sam Levine | September 2026

First Cut Stocks,Market Actions

Best-Performing S&P Composite 1500 Stocks at Midpoint 2026

One of the clearest themes during the first half of 2026 was the remarkable breadth of the artificial intelligence (AI) investment cycle.

By John Bajkowski | August 2026

First Cut Stocks,Market Actions

Worst-Performing S&P Composite 1500 Stocks at Midpoint 2026

Many of the largest declines occurred in software, IT services and enterprise application companies as investors favored businesses supplying the semiconductor, memory and data-center ecosystem.

By John Bajkowski | August 2026

AAII Stock Ideas,Value Investing

Beyond Earnings: Identifying Stocks With a Low Price Relative to Sales

AAII’s Price-to-Sales screen is a solid performer, delivering positive returns in 21 out of the 28 years since its origination.

By Michael Rose, John Bajkowski | July 2026