Adams Natural Resources Fund
Adams Natural Resources Fund is a New York Stock Exchange-listed closed-end fund investing primarily in energy, natural-resource, and basic-materials companies.
Last updated August 31, 2026
Overview
Adams Natural Resources Fund is a United States-listed closed-end investment company focused on securities associated with energy, petroleum, natural resources, and related industries. The fund trades on the New York Stock Exchange under the ticker PEO, giving investors access to a publicly traded vehicle rather than a conventional open-end mutual fund. Its portfolio has historically maintained meaningful exposure to oil companies and has also included businesses involved in exploration, production equipment, energy services, and other parts of the petroleum value chain. The fund’s investment scope is broader than petroleum alone. It describes its mandate in terms of energy and basic materials, allowing exposure to areas such as coal, nuclear power, hydroelectric power, precious and industrial metals, aggregates, and chemicals. The portfolio can therefore evolve as energy markets, commodity prices, technologies, and the broader natural-resources economy change. Although non-petroleum energy sources have gained importance, oil has remained a central component of the fund’s energy-oriented investment approach. Adams Natural Resources Fund is notable for its long exchange-traded history. Its predecessor, Petroleum & Resources Corporation, began trading on the New York Stock Exchange in January 1929, making it one of the earlier sector-oriented investment companies to trade on that exchange. The fund has paid dividends continuously since 1934. In recent years, realized capital gains have represented a substantial portion of distributions, and the fund generally distributes substantially all of its net investment income and capital gains. Shareholders may elect to receive certain year-end income and capital-gains distributions in cash or additional shares, subject to the fund’s applicable procedures. As a closed-end fund, its shares trade in the secondary market and may sell at a premium or discount to the fund’s net asset value. Its performance is influenced both by the value of its underlying holdings and by market sentiment toward the shares themselves. The fund is managed as a specialized natural-resources investment product rather than as a consumer-facing operating company. Its positioning is therefore aimed at investors seeking concentrated, publicly traded exposure to energy, materials, and related natural-resource businesses.
History
Adams Natural Resources Fund traces its public-market history to Petroleum & Resources Corporation, which began trading on the New York Stock Exchange in January 1929. From its beginnings, the investment company concentrated on securities connected with petroleum, energy, and other natural-resource industries. This structure made it an early example of a sector-oriented investment vehicle available through a major stock exchange. The fund’s portfolio has changed as the energy and natural-resources industries have developed. Petroleum has remained a central influence because oil continues to play a major role in the global energy system, but the fund has not been limited to integrated oil producers. Its holdings have included a diversified group of multinational energy companies as well as businesses involved in exploration, equipment, and services. The investment mandate has also allowed the fund to consider alternative and non-petroleum sources of energy when they present suitable opportunities, including coal, nuclear power, and hydroelectric power. In addition to energy, the fund invests across basic-materials industries. These may include precious and industrial metals, aggregates, chemicals, and other businesses whose performance is linked to the extraction, processing, or supply of natural resources. The fund now characterizes its investment area as energy and basic materials, reflecting this broader scope and the changing composition of the resources economy. The fund has maintained a long distribution record. It has paid dividends continuously since 1934, and realized capital gains have accounted for a significant share of distributions in recent years. Substantially all net investment income and capital gains are distributed. Shareholders have the option, under the applicable distribution arrangements, to receive certain capital-gains and year-end income distributions in cash or stock. The management structure changed in 2013, when Mark Stoeckle succeeded Douglas Ober as chief executive and lead portfolio manager on February 11. Stoeckle was described as having more than three decades of experience in financial services and asset management. James Haynie joined the team as executive vice president in August 2013, supported by research analysts seeking companies with long-term earnings-growth potential at reasonable valuations. The fund is based in Baltimore, Maryland, and continues to trade on the New York Stock Exchange under the symbol PEO. As a closed-end fund, it offers a fixed pool of exchange-traded shares whose market price can diverge from the underlying net asset value. Its identity is consequently defined by both its specialized investment mandate and its long-running public-market structure.
- 2013Mark Stoeckle became chief executive and lead portfolio manager
On February 11, 2013, Mark Stoeckle succeeded Douglas Ober in the fund’s chief executive and lead portfolio-management roles.
- 2013James Haynie joined the management team
James Haynie joined the fund’s team as executive vice president in August 2013.
- 1934Started continuous dividend payments
The fund’s predecessor began a dividend record that has continued without interruption since 1934.
- 1929Began trading on the New York Stock Exchange
Petroleum & Resources Corporation, the fund’s predecessor identity, began NYSE trading in January 1929 with a focus on energy and natural-resource investments.
Products and positioning
A publicly traded, sector-focused closed-end fund for investors seeking managed exposure to energy, petroleum, natural-resource, and basic-materials companies.
Adams Natural Resources FundClosed-end investment fund
The fund’s principal offering is a publicly traded closed-end investment vehicle focused on energy and basic materials. Its portfolio can include integrated and independent petroleum companies, exploration businesses, energy equipment and service providers, and companies connected with coal, nuclear, hydroelectric power, metals, aggregates, and chemicals. The fund is designed to provide diversified exposure to natural-resource industries through a managed securities portfolio. Because its shares trade on the NYSE, investors buy and sell them in the secondary market, where the share price may differ from net asset value.
Flagship businesses
- Adams Natural Resources Fund
Brand decisions
- 2013Change in executive and portfolio-management leadershipOther
The fund’s management transitioned from Douglas Ober to Mark Stoeckle in 2013.
What changed. Mark Stoeckle succeeded Ober as chief executive and lead portfolio manager on February 11, 2013; James Haynie joined as executive vice president in August.
Aftermath. The investment process continued to be supported by research analysts focused on long-term earnings growth at reasonable prices.
Leadership
| Name | Title | Tenure |
|---|---|---|
| Mark Stoeckle | Chief Executive Officer and lead portfolio manager | 2013– |
| Douglas Ober | Former chief executive officer and lead portfolio managerformer | –2013 |
| James Haynie | Executive Vice President | 2013– |
Recent events
- 2013Mark Stoeckle succeeded Douglas Ober as chief executive and lead portfolio manager
Mark Stoeckle took over from Douglas Ober as chief executive and lead portfolio manager on February 11, 2013. James Haynie joined the investment team as executive vice president later that year.
Leadership change
Sources
Cite this profile: Cite the canonical profile. /brand-wiki/adams-natural-resources-fund · Editorial policy · How profiles are compiled