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Calvert Ultra-Short Duration Income Fund Class A (CULAX) Fund Overview

Educational signal · not a buy or sell recommendation · How to read this

$9.87 $0.00 (0.00%)

Beta 0.05: the stock has moved about 95% less than the S&P 500.

Data from FMP · Methodology

For informational purposes only. Not financial advice. Machine-generated analysis by Stock Expert AI — model gemini-2.5-flash, generated Jun 15, 2026. Editorial oversight is systemic, not page-by-page. Editorially accountable: Sedat ANAK, Founder and Editor-in-Chief. Data sources: Financial Modeling Prep, Yahoo Finance, SEC EDGAR

Quick Answer

Calvert Ultra-Short Duration Income Fund Class A (CULAX) trades at $9.87. Sector: Financials.

Price as of · Last analyzed: Jun 15, 2026
Calvert Ultra-Short Duration Income Fund Class A (CULAX) is a mutual fund focused on generating income by investing at least 80% of its total assets in ultra-short duration debt instruments. Its portfolio primarily consists of variable-rate securities, including corporate floating-rate bonds, with a duration of one year or less.

Analyst Coverage for CULAX: CULAX does not currently have published analyst price targets in our coverage universe. This is common for smaller-cap names with limited Wall Street coverage.

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Calvert Ultra-Short Duration Income Fund Class A (CULAX) Financial Services Profile

HeadquartersWashington, US
IPO Year2006

Calvert Ultra-Short Duration Income Fund Class A (CULAX) is a mutual fund focused on generating income through a diversified portfolio of ultra-short duration debt securities, primarily variable-rate instruments. It targets investment-grade assets with a duration of one year or less, aiming to minimize interest rate risk while potentially attracting ESG-conscious investors.

Data Provenance | Financial Data Quantitative Analysis Analysis: Jun 15, 2026

What Is the Investment Thesis for CULAX?

AI-written as of Jun 15, 2026 — figures and tone reflect the data available then, not today's score.

Calvert Ultra-Short Duration Income Fund Class A (CULAX), with a market capitalization of $0.70 billion and a low beta of 0.05, presents an investment thesis centered on capital preservation and income generation through a low-duration fixed-income strategy. The fund's mandate to invest at least 80% of its assets in debt instruments with a duration of one year or less, primarily variable-rate securities and corporate floating-rate bonds, positions it to mitigate interest rate risk effectively. This strategy is particularly relevant in environments of rising or volatile interest rates, where longer-duration bonds face greater price sensitivity. A key growth catalyst for CULAX is the increasing investor demand for socially responsible investment (SRI) options; its focus on ESG principles could attract a growing segment of the market. The fund's commitment to investment-grade securities also underpins its value proposition as a relatively stable component of a diversified portfolio. However, investors must consider the inherent trade-off: ultra-short duration funds typically offer lower yields compared to longer-duration alternatives. Performance relative to its benchmark and peer group, alongside its expense ratio, will be critical metrics for evaluating its long-term value and efficiency in delivering its income objective.

Based on FMP financials and quantitative analysis

CULAX Key Highlights

AI-written as of Jun 15, 2026 — figures and tone reflect the data available then, not today's score.

Market capitalization of $0.70 billion, reflecting its scale within the ultra-short duration income fund segment.

  • Extremely low beta of 0.05, indicating minimal correlation and volatility relative to the broader market, aligning with its capital preservation objective.
  • No dividend yield, consistent with its structure as a mutual fund that distributes income rather than a traditional stock dividend.
  • Mandate to invest at least 80% of total assets in debt instruments with a duration of one year or less, emphasizing a low-duration strategy.
  • Focus on socially responsible investing, potentially attracting a growing base of ESG-conscious investors.

What Are CULAX's Key Strengths?

Low duration strategy effectively minimizes interest rate risk, appealing in volatile rate environments.

  • Explicit focus on socially responsible investing (ESG) attracts a growing segment of conscious investors.
  • Investment in investment-grade securities maintains a high credit quality across the portfolio.
  • Extremely low beta of 0.05 indicates stability and low correlation with broader market movements.

What Are CULAX's Weaknesses?

Potentially offers lower yields compared to fixed-income investments with longer durations.

  • Subject to an expense ratio, which can impact the net returns for investors.
  • Performance is intrinsically tied to the availability and performance of ultra-short duration debt markets.
  • May not appeal to investors solely focused on maximizing yield without regard for duration risk.

What Are the Key Risks for CULAX?

Lower yield potential compared to longer-duration fixed-income investments, which might deter investors seeking higher income.

  • Fluctuations in the credit quality of underlying corporate bonds, despite the fund's focus on investment-grade securities.
  • Impact of the fund's expense ratio on net returns, which must be monitored relative to its peer group.
  • Intense competition from other ultra-short duration funds and money market instruments, potentially limiting market share.
  • Regulatory changes impacting the definition or reporting requirements for socially responsible investments, affecting its ESG positioning.

What Threats Does CULAX Face?

  • Sustained low interest rate environments could limit the fund's income generation potential.
  • Intense competition from other ultra-short duration funds and money market alternatives.
  • Credit downgrades within its underlying corporate bond portfolio could negatively impact asset value.
  • Regulatory changes affecting fixed-income markets or the definition and reporting of ESG investments.

What Are CULAX's Competitive Advantages?

  • Specialized expertise in managing ultra-short duration fixed income portfolios, focusing on specific risk parameters.
  • Established brand reputation within the socially responsible investing (ESG) segment, attracting a dedicated investor base.
  • Disciplined portfolio construction aimed at a specific risk/return profile, offering a clear value proposition.
  • Access to a broad universe of investment-grade variable-rate securities and other short-term debt instruments.

What Does CULAX Do?

Calvert Ultra-Short Duration Income Fund Class A (CULAX) operates as a mutual fund within the financial services sector, specifically under asset management focused on income generation. The fund's primary investment objective is to generate income for its shareholders. To achieve this, CULAX is mandated to commit at least 80% of its total assets, which may include borrowed capital, to a diversified blend of debt instruments. The core of its portfolio is composed of variable-rate securities, prominently featuring corporate floating-rate bonds. In addition to these, the fund also invests in other fixed-income assets, all characterized by a duration of one year or less. The fund manager explicitly defines instruments with a duration not exceeding one year as 'ultra-short duration securities,' underscoring a disciplined approach to managing interest rate risk. This strategic focus on low duration is a key aspect of its risk management framework, aiming to mitigate the impact of potential interest rate fluctuations and preserve capital in volatile interest rate environments. A notable characteristic of CULAX, as highlighted by existing insights, is its emphasis on socially responsible investing. This focus potentially positions the fund as a noteworthy option for investors who prioritize Environmental, Social, and Governance (ESG) factors in their investment decisions, aligning their financial goals with broader ethical considerations. The fund primarily invests in investment-grade securities, further reinforcing its commitment to managing credit risk and maintaining a high-quality portfolio. While aiming for income generation, the ultra-short duration strategy inherently means that the fund may offer lower yields compared to fixed-income investments with longer durations, a trade-off for reduced interest rate sensitivity. Investors monitoring CULAX are typically advised to evaluate its expense ratio and compare its performance against relevant benchmarks and peer groups to assess its efficiency and effectiveness in meeting its stated objectives. The fund's headquarters are located in Washington, US, operating within the broader US financial market, serving a range of investors seeking short-term income solutions with a focus on capital preservation and responsible investing principles.

What Products and Services Does CULAX Offer?

  • Manages a mutual fund called Calvert Ultra-Short Duration Income Fund Class A.
  • Invests at least 80% of total assets in a diversified portfolio of debt instruments.
  • Focuses on ultra-short duration securities, specifically those with a duration of one year or less.
  • Primarily invests in variable-rate securities, including corporate floating-rate bonds.
  • Aims to generate income for its shareholders.
  • Prioritizes investment-grade securities to maintain high credit quality and manage credit risk.
  • Emphasizes socially responsible investing (ESG factors) in its investment selection process.
  • Seeks to minimize interest rate risk through its disciplined low-duration investment strategy.

How Does CULAX Make Money?

  • Generates revenue through management fees charged on its assets under management (AUM).
  • Distributes income to shareholders derived from interest payments on its portfolio of debt securities.
  • Actively manages a diversified portfolio of ultra-short duration debt instruments to meet its investment objective.

What Industry Does CULAX Operate In?

Calvert Ultra-Short Duration Income Fund Class A (CULAX) operates within the highly competitive asset management industry, specifically targeting the income-focused segment with its ultra-short duration strategy. This niche is characterized by funds designed to provide current income while minimizing exposure to interest rate fluctuations, a critical consideration in dynamic economic environments. The broader market trend shows increasing demand for investment vehicles that offer capital preservation and liquidity, especially from institutional investors and individuals seeking alternatives to traditional money market funds. CULAX differentiates itself by focusing on investment-grade, variable-rate securities with a duration of one year or less, positioning it as a lower-risk option compared to longer-duration fixed-income funds. Furthermore, its explicit commitment to socially responsible investing (SRI) aligns with a significant and growing market trend, attracting a segment of investors who prioritize ESG factors alongside financial returns. The fund competes by offering a specific blend of low interest rate sensitivity and a responsible investment mandate within the crowded income fund landscape.

Who Are CULAX's Key Customers?

  • Individual investors seeking income, capital preservation, and low interest rate sensitivity.
  • Institutional investors, such as corporate treasuries and endowments, managing short-term cash reserves.
  • ESG-conscious investors looking for socially responsible fixed-income options.
  • Investors seeking low-volatility alternatives to traditional money market funds.
Model self-rating on this text: 68% (not a measure of the evidence) Updated: Jun 15, 2026

Research confidence

Low

Thin evidence — scoring coverage unknown. Treat this as a starting point, not a conclusion.

  • ● Scoring coverage unknown
  • ● Price is current
  • ● No filing on record
  • ● No analyst coverage
  • ● This is a fund, not an operating company

CULAX Financials

Bull Case vs Bear Case

Bull Case

  • Low duration strategy effectively minimizes interest rate risk, appealing in volatile rate environments.
  • Explicit focus on socially responsible investing (ESG) attracts a growing segment of conscious investors.
  • Investment in investment-grade securities maintains a high credit quality across the portfolio.
  • Extremely low beta of 0.05 indicates stability and low correlation with broader market movements.

Bear Case

  • Potentially offers lower yields compared to fixed-income investments with longer durations.
  • Subject to an expense ratio, which can impact the net returns for investors.
  • Performance is intrinsically tied to the availability and performance of ultra-short duration debt markets.
  • May not appeal to investors solely focused on maximizing yield without regard for duration risk.

AI-generated arguments based on insider flow, news sentiment and technicals — not financial advice · June 2026

CULAX Latest News

No recent news available for CULAX.

CULAX Analyst Consensus

Consensus Rating

Aggregated Buy/Hold/Sell recommendations collected by Financial Modeling Prep for CULAX.

Price Targets

Wall Street price target analysis for CULAX.

CULAX MoonshotScore

MoonshotScore is Stock Expert AI's proprietary 0-100 research rating, not a buy or sell recommendation. No MoonshotScore is published for CULAX; grades run from A+ (80-100) to F (below 30).

Calvert Ultra-Short Duration Income Fund Class A Financials Stock: Key Questions Answered

How does Calvert Ultra-Short Duration Income Fund Class A manage interest rate and credit risk?

CULAX primarily manages interest rate risk through its strict adherence to an ultra-short duration strategy, investing in debt instruments with a duration of one year or less. For credit risk, the fund focuses on investing in investment-grade securities.

Disclaimer: This content is for informational purposes only and does not constitute investment advice. Always do your own research and consult a financial advisor.

Official Resources

Price as of Analysis updated

MoonshotScore is not published for this security.

Data Sources & Methodology
Figures come from Financial Modeling Prep (FMP). If FMP has no figure for a ticker, a price or fundamental may come from a Yahoo Finance fallback, or a price from an Alpaca fallback. SEC EDGAR is used only for filing links and company identity details (legal name, address), never for figures. AI analysis by Stock Expert AI proprietary algorithms. Technical indicators via industry-standard calculations. Last updated: .
Data Provenance
Sources: Financial Modeling Prep (FMP) — Primary · Yahoo Finance — Fallback · Alpaca — Tertiary
Last fetched:
Cache TTL: Quote 5min · Profile 7d · Financials 7d · Insider 48h
How we use AI: Numbers are pulled directly from FMP & Yahoo Finance — our AI writes the analysis, it never edits the figures.
Data provided as-is for educational purposes. Not financial advice. Methodology

Data provided for informational purposes only.

Analysis Notes
  • All information is derived solely from the provided source data. No external research or speculative content has been used.
Data Sources
Financial Modeling Prep (FMP)Stock Expert AI proprietary analysis