Where to Buy ETFs? Comprehensive Guide for Investing in 2025

ETFs (Exchange Traded Funds, or exchange-traded funds) have become popular among both individual and professional investors due to their diversification, liquidity, and low fees. In 2025, choosing a high-performing ETF and using a good platform is more crucial than ever. This detailed guide shows you where to buy ETFs, how to compare the best offers, and provides a comprehensive analysis of thematic ETFs such as the Ossiam US ESG Low Carbon Equity Factors UCITS ETF, an innovative investment vehicle focused on low-carbon transition and ESG criteria (environmental, social, governance).

Introduction to ETFs: Definition and Functioning

An ETF is an indexed fund that tracks a stock market index or a basket of underlying assets (stocks, bonds, commodities...). Unlike traditional funds, you can buy or sell an ETF during stock exchange trading hours at market price. This hybrid structure offers flexibility, accessibility, and transparency.

The Advantages of ETFs for Investors

  • Immediate diversification across multiple companies or sectors through a single product.
  • Superior liquidity thanks to continuous listing and the presence of market makers.
  • Reduced fees (TER often between 0.10% and 0.60%), positively impacting long-term net performance.
  • Transparency: the fund's composition and net asset value are published daily.
  • Access to various themes (ESG, tech, energy...) or distant geographical regions.
  • Ease of integration into an automated savings strategy (ETF Plans, PEA, PEA-PME...).

Where to Buy ETFs in 2025: Exchanges, Platforms, and Accessibility

Investing in ETFs requires careful selection of the listing venue and online broker. Various factors influence costs and ease of access:

  • The listing exchange: Influences the currency, trading hours, liquidity, and sometimes brokerage fees.
  • The access platform: Banks, regulated online brokers, investment mobile apps.
  • The universe offered: Some brokers offer all European and US ETFs, while others limit themselves to a restricted selection.

The Major Exchanges for ETF Listing

  • Euronext Paris: Major French exchange. Many European ETFs are available here, but not all global ETFs.
  • Deutsche Börse (Xetra): Leading European exchange for liquidity and choice of funds, with listing in euros (e.g., OUFE.DE).
  • London Stock Exchange (LSE): Hosts international ETFs, primarily listed in USD or GBP (e.g., OUFU).

In 2025, most ETFs are traded smoothly on Xetra (Germany) and LSE (UK), allowing French investors to access them through the majority of online brokers. It is worth noting that some American thematic ETFs are not listed on NYSE and are accessible on the New York market only indirectly via international brokers.

In-depth Analysis: Ossiam US ESG Low Carbon Equity Factors UCITS ETF

General Overview

The Ossiam US ESG Low Carbon Equity Factors UCITS ETF embodies the trend towards responsible investment. This actively managed fund aims to offer exposure to American companies while adhering to strict ESG criteria and limiting the portfolio's carbon footprint. It uses physical replication and a multi-factor selection model (momentum, size, value, low volatility).

Quotations and Access

  • Main Exchange: Deutsche Börse (Xetra) (ticker OUFE.DE), quoted in euros.
  • Secondary Exchange: London Stock Exchange (LSE) (ticker OUFU), quoted in US dollars.
  • No direct quotation on the New York Stock Exchange (NYSE).
  • Accessible via major French and European platforms (Boursorama, Trade Republic, Degiro, Scalable Capital, etc.).

The platforms offer purchases in euros or dollars, depending on the chosen exchange. It is recommended to check the currency conversion fees and specific commissions for each broker.

Price and Recent Performance

  • Xetra Price (EUR): Approximately 199.08 € on November 5, 2025.
  • LSE Price (USD): Approximately 207.10 $ on November 11, 2025.
  • Annual Variation (November 2024 - November 2025): -1.58 %.
  • Performance over 5 years (November 2020 - November 2025): +73.36 %.

The price differences are mainly linked to the denomination currency and the market; it is therefore essential to choose the appropriate venue for your investment currency to avoid unnecessary fees.

Fees and Distributions

  • Annual Fee Ratio (Total Expense Ratio, TER): 0.45 %.
  • Distribution Type: Capitalization (no dividends redistributed, all revenues are reinvested).
  • No performance fees, no hidden management fees.
  • Brokerage commissions to verify according to the platform (from 0.99 € to 2.50 € per order according to brokers).

Fund Characteristics

  • Assets Under Management (AUM, EUR/USD combined): Approximately 1 million euros recently.
  • Number of Positions: 310 securities approximately.
  • Beta over 5 years: 0.75 (lower volatility than the US market, relative stability).
  • Dominant weighting on American companies (around 89% of the portfolio).

ESG Model and Selection Criteria

The management strategy relies on:

  • "Best-In-Class" Filter: 80% of the selected stocks have the best ESG ratings within each sub-sector, eliminating companies with controversial practices or those that do not comply with the United Nations Global Compact.
  • Ethical filter excluding companies that do not meet environmental, social, and ethical standards.
  • Carbon optimization: the direct emissions of the selected companies must be at least 40% lower than those of the overall U.S. market universe.
  • Multifactorial: weightings chosen according to valuation factors, momentum, size, and volatility to improve the risk-return ratio.

Main Companies in the Portfolio

Title Weighting
Amazon.com, Inc.2.38%
Brown-Forman2.07%
NVIDIA Corp.1.68%
Microsoft1.53%
Johnson & Johnson1.18%
Walmart, Inc.1.03%
Tesla0.99%
Church & Dwight0.93%
Alphabet, Inc. A0.92%
Gen Digital0.89%

These titles illustrate the sectoral focus on technology, consumer goods, and healthcare, offering diversification while remaining exposed to major trends in the U.S. market.

Investment Sectors

Sector Weighting
Financial Services21.48%
Technology13.68%
Industry13.18%
Healthcare12.92%
Others38.74%

The fund is therefore not exclusively a financial product or asset management tool but aims for the category US Stocks / ESG by following a strict and transparent model.

Comparison: Competing ETFs and Reference Indices

To choose an ETF well, it is essential to compare its performance and fees with alternatives (S&P 500 ESG, Lyxor ETF USA ESG, Amundi USA ESG...) and the classic S&P 500 index. The Ossiam ETF stands out for:

  • Attractive long-term performance over 5 years (+73.36%) for a moderate volatility.
  • A competitive TER (0.45%).
  • Adaptation to new European standards in sustainable finance.
  • Strict exclusion of non-compliant ESG values.

Note that some competing ETFs have significantly higher assets under management and greater liquidity. It is recommended to check the size of the fund, as low liquidity can affect the purchase/sale price.

Strategies for Smartly Buying ETFs in 2025

1. Define Your Investment Objectives

Identify your investment horizon, your risk tolerance, and your goals (retirement, additional income, wealth accumulation, etc.). Thematic ETFs like the Ossiam US ESG are suitable for investors seeking to combine growth with positive environmental impact.

2. Compare Fees, Spreads, and Commissions

  • Management fees (TER): the level of fees directly impacts your actual performance over the long term.
  • Brokerage commission: each platform applies its own fees. Prefer those that offer reduced or included costs for ETF purchases within a savings plan.
  • Bid-ask spread: prefer the most liquid stock exchanges to minimize this indirect cost.
  • Currency conversion fees: if you buy on the LSE (in dollars), check the currency conversion fees applied by your broker.

3. Use a secure and efficient online platform

  • Regulated online brokers: Choose European-approved brokers for the security of funds and investor protection.
  • Specialized online banks: Often offer ETF investment plans (savings plans, PEA, life insurance).
  • Mobile investment management applications: Ideal for real-time tracking, alerts, and quick orders.

Check the product offering, ease of navigation, access to ESG reports and comparison tools before opening an account.

Investment tips and points of caution

Manage the taxation of ETFs well

  • Capital gains and revenues generated by selling ETFs or income distributions (if applicable) are subject to French or European tax.
  • Prefer investing through a PEA or life insurance to optimize the imposition on gains according to your situation.

Verification and monitoring of liquidity, size, and risk

  • Prefer ETFs where the net asset value is above €50 million to limit risks related to lack of liquidity. The Ossiam US ESG Low Carbon currently has an asset value of approximately €1 million: it is therefore important to verify that the liquidity is appropriate for your investment amount.
  • The measured volatility (beta at 0.75) ensures moderate exposure to market fluctuations. However, performance may occasionally diverge from the standard S&P 500 index.

Summary: how to choose and buy an ETF step-by-step

  1. Select the ETF based on its strategy (geographic, ESG, sector, market cap).
  2. Compare annual fees (TER) and any specific management fees.
  3. Verify liquidity: net asset value above €50M, daily trade volume.
  4. Compare performance (over 1 year and 5 years), as well as the level of risk (beta, drawdown).
  5. Compare purchasing platforms (banks, brokers, apps), their commissions and ancillary fees.
  6. Invest gradually to limit the impact of volatility and optimize the average purchase price.
  7. Monitor your portfolio: rebalance regularly according to market evolution and your goals.

FAQ about buying ETFs in 2025

  • Can ETFs be purchased through a PEA? Yes, many eligible European ETFs are accessible through a PEA, allowing for optimized taxation. American ETFs like Ossiam US ESG are not eligible for PEA.
  • Should one prefer a quotation in euros or dollars? This depends on your investment currency and the exchange rate cost applied by your broker. Investing in the same currency as your portfolio minimizes fees and the impact of exchange rate fluctuations.
  • What are the risks associated with ETFs? ETFs are subject to the fluctuations of the underlying market. Diversification, fund size, and the ESG model can reduce certain risks, but there remains an element of uncertainty related to performance and liquidity.
  • How do you track the performance of an ETF? Online brokers and specialized websites offer real-time tracking tools. It is recommended to consult product sheets from providers, Morningstar ratings, and analyze price evolution on your platform.
  • Does the Ossiam US ESG distribute dividends? No, all revenues are capitalized and reinvested in the fund.
  • Which platforms should one choose to invest in ETFs? The most accessible ones in France are Boursorama, Trade Republic, Degiro, Interactive Brokers, Fortuneo, Scalable Capital, etc. Always check that they are regulated, provide access to Xetra and LSE, and their fees.

Conclusion: Investing in ETFs, a Winning Strategy in 2025

ETFs today offer an indispensable solution for diversifying savings and accessing global markets at lower costs. Their growing popularity brings a very wide range of options, making the choice of the right trading platform, the right ETF, and the right broker more demanding.

In this universe, the Ossiam US ESG Low Carbon Equity Factors UCITS ETF is an example of innovation, combining ESG commitment, low volatility, and attractive long-term performance for a limited cost. Before investing, it is essential to compare offers, analyze liquidity and fees, and adopt a methodical and regularly reviewed approach.

Do not hesitate to consult your financial advisor or to inform yourself about the specific characteristics of ETFs available on each stock exchange, as the universe changes rapidly and opportunities evolve continuously.