How Hospitals Invest Their Money and Why It Matters

Hospitals invest money through endowments, pension funds, and operating reserves, just as any large organization does

Hospitals are businesses. They collect revenue from patient care, insurance payments, and government programs, and they spend that money on staff, equipment, and facilities. What they do with money left over—or what they set aside for future needs—follows the same logic as any other institution managing capital.

Most hospitals invest through three channels: an endowment (a pool of donated money meant to generate returns in perpetuity), a pension fund (money set aside to pay retired employees), and operating reserves (cash kept liquid for emergencies or planned purchases). The largest hospital systems—Mayo Clinic, Cleveland Clinic, Partners HealthCare—manage billions in invested assets. Smaller regional hospitals may have endowments in the tens of millions or none at all.

The investments themselves are ordinary: stocks, bonds, real estate, and diversified funds. A hospital's investment committee, usually made up of board members and finance staff, decides how much risk to take and what returns to target. The goal is the same as any investor's: grow the money over time while protecting against loss.

Key Takeaways

• Hospital endowments are funded by donations and are legally required to spend only a portion of returns each year, typically 4 to 5 percent, so the principal grows over time.
• Pension funds hold money hospitals have set aside to pay employees after retirement, and hospitals must invest these funds conservatively because the payments are legally may provide.
• Operating reserves are cash and short-term investments hospitals keep on hand to cover payroll, unexpected costs, and planned capital projects.
• Large teaching hospitals and health systems often have professional investment staff and diversified portfolios; smaller hospitals may outsource to investment managers or keep reserves mostly in cash.

Hospital endowments and how they work

A hospital endowment is a pool of money, usually built from major donations, that is invested to generate income for the hospital in perpetuity. The endowment is separate from the hospital's operating budget. Money donated to the endowment stays invested; only a portion of the returns is spent each year.

Most hospital endowments follow a spending policy that limits withdrawals to 4 to 5 percent of the endowment's average value over the past few years. This rule exists because endowments are meant to last forever. If a hospital spent all the returns in a good year and the market fell the next year, the endowment would shrink. By spending only a fraction, the endowment can grow with inflation and market returns while still funding programs.

The investments in a hospital endowment look like a university endowment: a mix of stocks (often 50 to 60 percent), bonds (20 to 30 percent), real estate, and alternative investments like private equity or hedge funds. The exact mix depends on the hospital's risk tolerance and the advice of its investment committee. A hospital with a $100 million endowment might spend $4 to $5 million per year on research, education, charity care, or capital projects, while the endowment itself continues to grow.

Pension funds and why hospitals must invest conservatively

Many hospitals offer defined-benefit pension plans to employees—a promise to pay a set monthly amount after retirement. To keep that promise, the hospital must set aside money today and invest it. The hospital's finance team, working with actuaries, calculates how much to set aside based on employee ages, expected lifespans, and salary history.

Pension fund investments are more conservative than endowment investments because the payments are legally may provide. If the fund loses money, the hospital must make up the difference from operating revenue. A typical pension fund holds 40 to 50 percent stocks and 50 to 60 percent bonds, weighted toward stability. Some hospitals have frozen their pension plans in recent years—stopping new employees from joining—because the liability became too large to manage.

Hospitals report their pension fund status in their annual financial statements, which are public for nonprofit hospitals. A fund that is "underfunded" means the hospital has promised more in future payments than it has set aside and invested. This creates a liability that must eventually be paid, either through higher contributions or by the hospital's operating budget.

Operating reserves and liquid investments

Operating reserves are the cash and near-cash investments a hospital keeps on hand to pay salaries, buy supplies, cover unexpected costs, and fund planned capital projects like a new wing or equipment purchase. These reserves are not invested for long-term growth; they are kept liquid and safe.

A healthy hospital typically holds operating reserves equal to 40 to 60 days of operating expenses. For a mid-sized hospital spending $500 million per year, that means $55 to $80 million in reserves. These funds sit in money market accounts, short-term bonds, or certificates of deposit—investments that can be converted to cash quickly without loss.

During the COVID-19 pandemic, hospitals with strong operating reserves weathered the crisis better than those with thin reserves. Hospitals that had built up cash could pay staff, buy equipment, and cover lost revenue from cancelled procedures. Those with minimal reserves had to borrow or cut costs immediately.

How large hospital systems manage billions in assets

The largest hospital systems—Mayo Clinic, Cleveland Clinic, Kaiser Permanente, Partners HealthCare—manage endowments and reserves totaling billions of dollars. These organizations have dedicated investment departments with professional staff, sometimes 20 to 50 people, who manage the money in-house.

A large health system's investment office typically includes a chief investment officer, portfolio managers, analysts, and compliance staff. They set investment policy, hire external managers for specialized areas like private equity or international stocks, monitor performance, and report to the board's investment committee quarterly or annually.

Smaller regional hospitals and community hospitals often lack the scale to justify a full investment team. They may hire an external investment advisor or manager to oversee endowments and reserves. Some keep reserves mostly in cash or low-risk bonds because the staff time to manage a diversified portfolio is not available.

What hospitals invest in and why

Hospital endowments and reserves are invested in the same asset classes as any large investor: public stocks, bonds, real estate, and alternatives. The specific holdings depend on the hospital's investment policy and risk tolerance.

A typical large hospital endowment might hold index funds tracking the S&P 500 or total stock market, international stock funds, bond funds, real estate investment trusts (REITs), and a small allocation to private equity or hedge funds. The goal is diversification—spreading risk across many holdings so that a decline in one area is offset by strength in another.

Some hospitals have begun investing in healthcare-related assets: medical office buildings, senior living facilities, or companies developing medical devices. These investments align with the hospital's mission and may generate returns while supporting the healthcare ecosystem.

Nonprofit versus for-profit hospital investments

Nonprofit hospitals are required by law to reinvest any surplus revenue back into the hospital or community benefit programs. They cannot distribute profits to shareholders. This means investment returns from endowments and reserves must be used for patient care, research, education, or charity care—not paid out to owners.

For-profit hospitals, by contrast, can distribute profits to shareholders or private owners. A for-profit hospital's investment strategy may prioritize returns to shareholders over community benefit. However, for-profit hospitals still maintain operating reserves and may have endowments or pension funds that follow similar investment logic.

Nonprofit hospitals report their financial status, including investment holdings and returns, in annual Form 990-N filings with the IRS. These documents are public and show how much money the hospital invested, what it earned, and how it spent the returns.

Frequently Asked Questions

Do hospitals make money from their investments?

Yes. A hospital with a $100 million endowment earning 6 percent per year generates $6 million in returns. If the spending policy allows 5 percent withdrawal, the hospital spends $5 million and the endowment grows by 1 percent. Operating reserves also earn interest, though usually at lower rates because they are kept in safer, more liquid investments.

Can a hospital lose money on its investments?

Yes. When stock markets fall, hospital endowments and reserves decline in value. A hospital with a diversified portfolio typically recovers over time, but in the short term, losses are real. This is why hospitals keep operating reserves in safer investments and why endowment spending policies limit withdrawals—to survive market downturns without cutting programs.

Where can I see what a hospital invested in?

Nonprofit hospitals file Form 990 with the IRS annually, which is public. The form includes information about endowments, investments, and financial position. You can search for a hospital's 990 on GuideStar or the IRS website. For-profit hospitals may not disclose as much detail unless they are publicly traded, in which case they file with the SEC.

Do hospital investments affect patient care?

Indirectly, yes. A hospital with strong endowment returns can fund research, buy new equipment, or offer charity care without cutting other programs. A hospital with investment losses may need to reduce spending or raise prices. However, investment performance is separate from day-to-day clinical operations and staffing.

Why do some hospitals have endowments and others don't?

Endowments are built from major donations over decades. Teaching hospitals and prestigious medical centers attract large gifts and have built substantial endowments. Smaller community hospitals, newer hospitals, or those in less wealthy areas may have little or no endowment. Operating reserves are more universal—all hospitals need cash on hand—but the size varies widely.