Banks and Insurance as Investments: A Guide to Financial Sector Equities

Financial sector equities — principally banks and insurance companies — represent a significant portion of most developed market equity indices and offer characteristics distinct from other sectors. They are direct beneficiaries of higher interest rates, carry credit and underwriting risk, are subject to intensive regulatory capital requirements, and face emerging disruption from fintech. For investors willing to understand their complexity, financial sector stocks can provide attractive valuations, strong dividends, and meaningful capital return.

Important: Financial sector investments involve sector-specific risks including credit cycle exposure, interest rate sensitivity, regulatory capital requirements, and reputational risk. The value of investments can fall as well as rise. This guide is for information only and does not constitute financial advice.

Why Financials Are Different

Most industrial companies generate value by transforming inputs into goods or services with a measurable cost base. Banks and insurance companies operate on a different model: they manage money and risk on behalf of clients, earning fees and spreads while carrying contingent liabilities that can crystallise rapidly in adverse scenarios.

This creates several unique investment characteristics:

Leverage: Banks are typically leveraged 10–15 times their equity capital. This leverage amplifies returns in good times and losses in bad times. A loan portfolio that deteriorates modestly can wipe out equity value at a bank in ways that would not occur in an unleveraged business.

Opacity: Bank balance sheets are inherently complex. Loan books, trading books, and derivative positions are difficult for outsiders to assess independently. Investors must place significant trust in management disclosures and regulatory oversight.

Regulatory dependency: Bank business models are directly shaped by regulation — capital requirements, liquidity standards, consumer protection rules, and stress test methodologies all affect what banks can and cannot do. Changes to regulatory frameworks can significantly alter the investment case.

Banks: Net Interest Margin and Interest Rate Sensitivity

The core profitability driver for most commercial banks is net interest margin (NIM) — the difference between the interest rate charged on loans and the interest paid on deposits. A bank that lends at 6% and pays 2% on deposits has a NIM of 4%; wider NIMs generally mean higher profitability.

NIM is directly influenced by interest rate levels and the shape of the yield curve:

Rising rates (2022–2023 experience): When central banks raised rates rapidly, banks benefited in two ways. First, variable-rate loan rates repriced upward quickly. Second, deposit rates often lagged loan rates — many banks were slow to pass on rate rises to depositors — so the spread widened. UK banks (Lloyds, Barclays, NatWest, HSBC) reported significantly higher NIM and pre-tax profits in 2022–2023, which drove share price outperformance.

Falling rates (2024 onwards): As the Bank of England and other central banks began cutting rates from late 2024, NIM began to compress. Loan rates fell as mortgages and other variable-rate products repriced downward; deposit rates proved stickier on the downside (banks competed more aggressively for deposits). Investors need to model the direction and pace of NIM evolution as part of bank financial analysis.

Yield curve shape: Banks typically borrow short (deposits) and lend long (mortgages, corporate loans). A steep yield curve — where long-term rates are significantly higher than short-term rates — is generally positive for bank profitability. An inverted yield curve (short rates above long rates, as experienced in 2022–2023) compresses margins on new lending.

Credit Quality Cycle

Alongside interest rates, the credit quality cycle is the most important driver of bank financial performance. When the economy is growing and unemployment is low, loan losses are minimal. When recession hits, businesses fail, unemployment rises, and households struggle to service debts — loan losses increase, potentially dramatically.

Loan loss provisions: Banks set aside provisions when they anticipate loans may not be repaid. Provisions reduce reported earnings; actual write-offs hit capital. Investors should monitor provision trends as early indicators of credit cycle deterioration.

Non-performing loans (NPLs): Loans more than 90 days past due. Rising NPL ratios signal deteriorating credit quality. European banks still carry legacy NPL ratios from the 2010-2012 eurozone crisis that are higher than UK or US peers in some cases.

Mortgage books: For UK banks, residential mortgage books are the single largest loan category. UK mortgage quality has generally been robust, supported by strong house price growth and relatively conservative underwriting standards post-2008. However, the rapid rise in interest rates in 2022–2023 created stress for some borrowers — particularly those rolling off fixed-rate deals onto much higher rates.

Commercial real estate (CRE): CRE lending has been a source of losses globally following the pandemic's structural shift in office demand. US regional banks have been particularly exposed; European banks have faced some CRE deterioration too, though with more conservative loan-to-value ratios generally.

Basel III Capital Requirements

The Basel III regulatory framework — developed in response to the 2008–2009 financial crisis and progressively implemented globally since 2013 — imposes capital requirements designed to ensure banks can absorb losses without public bailouts. Key components:

Common Equity Tier 1 (CET1) ratio: The primary measure of capital strength — a bank's highest-quality capital (ordinary shares and retained earnings) as a percentage of risk-weighted assets. UK banks are typically required to maintain CET1 ratios of 10–13%+, though individual requirements vary by institution and are set by the Prudential Regulation Authority (PRA).

Leverage ratio: A simpler measure comparing tier 1 capital to total assets (unweighted), acting as a backstop to risk-weighted approaches.

Liquidity Coverage Ratio (LCR): Ensures banks hold sufficient high-quality liquid assets to survive a 30-day stress scenario.

Basel III "endgame" (Basel IV): The final set of Basel III reforms, focused on reducing variability in risk-weighted asset calculations, was still being phased in during 2025–2026. In the UK, the PRA has modified some elements of the international standard. The reforms generally increase capital requirements modestly for standardised approaches and constrain how banks use internal models. This affects return on equity projections and may influence capital return plans.

Higher capital requirements generally mean lower returns on equity but also more resilient balance sheets — an important trade-off for investors to understand.

UK Banks: An Investor's Overview

The UK banking sector is dominated by four major listed banks:

Lloyds Banking Group: Primarily a domestic UK retail and commercial bank — the UK's largest mortgage lender. Lloyds has minimal investment banking operations and is one of the most interest rate-sensitive major UK banks. It has been a consistent dividend payer and share buyback programme operator. Its near-pure UK focus makes it a proxy for UK consumer and housing market health.

Barclays: More diversified than Lloyds, with significant investment banking operations (equities, fixed income, corporate advisory). Barclays' profitability is more volatile but potentially higher given the investment banking revenue stream. The group has been under activist investor pressure to improve capital allocation and simplify its structure.

HSBC: A global bank headquartered in London with significant operations in Hong Kong, Asia, and the Middle East. HSBC's earnings are substantially driven by Asia, making it less correlated with the UK economic cycle than domestic peers. It has been a major dividend payer and has carried out significant share buybacks. Its exposure to Hong Kong and China introduces geopolitical considerations.

NatWest Group: Formerly Royal Bank of Scotland, NatWest is a primarily UK retail and commercial bank. HM Treasury sold its final shares on 30 May 2025, returning NatWest to full private ownership and completing the privatisation begun after the 2008 bailout. NatWest is a domestic-focused franchise with a strong capital position.

UK banks as a group have returned significant capital to shareholders through dividends and buybacks in 2022–2025, reflecting strong profitability during the rate cycle peak and robust capital ratios. The key question for the forward period is how rapidly NIM compresses as rates fall and how credit quality evolves.

Insurance: Underwriting and Investment Returns

Insurance companies generate returns through two channels: underwriting profit (charging more in premiums than they pay in claims and expenses) and investment income (earning returns on the "float" — the pool of premiums collected before claims are paid).

Life insurance and pensions: Life insurers — including Legal & General, Aviva, Prudential, and Phoenix Group in the UK — manage long-duration liabilities (life insurance, annuities, pension obligations). They are significant investors in long-dated bonds, property, and infrastructure. Rising interest rates in 2022–2023 were broadly positive for life insurer solvency positions, as higher discount rates reduce the present value of long-duration liabilities.

General insurance (non-life): General insurers — covering property, motor, liability, and specialty risks — are subject to the underwriting cycle: periods of rising premiums (hard market) following periods of losses, followed by competitive pricing when profitability attracts new capacity (soft market). The UK motor insurance market was notably hard in 2023–2024, with premium increases of 30–40% following years of underpricing, driving strong profitability for Direct Line, Saga, and others.

Reinsurance: Companies such as Munich Re, Swiss Re, and Hannover Re take on risk from primary insurers. The reinsurance market has hardened significantly since 2022, driven by increased claims from weather events (climate-linked) and inflation in claims costs.

Solvency II (UK: Solvency UK): Insurance capital regulation in the UK was inherited from the EU's Solvency II framework. Post-Brexit reforms — Solvency UK — have relaxed some rules, particularly the risk margin calculation and matching adjustment restrictions, providing a tailwind to UK life insurer capital positions and dividend capacity.

Fintech Disruption Risk

Incumbent banks and insurers face structural competition from fintech companies — digitally-native businesses targeting the most profitable segments of financial services. Key disruption dynamics include:

Payments and current accounts: Digital banks (Monzo, Starling, Revolut in the UK; Chime, Nubank globally) have attracted tens of millions of customers with superior digital UX and lower fees. However, most remain unprofitable at scale and lack the full product breadth of incumbent banks.

Lending: Fintech lenders (Funding Circle, Zopa, LendInvest) target segments underserved by banks — small business lending, specialist mortgages. They have taken market share in some niches but also proven their own credit risk vulnerabilities during downturns.

Insurance: Insurtech companies (Lemonade, By Miles, Zego) target specific insurance segments with data-driven underwriting and frictionless digital claims. Market share gains have been more modest than in banking, partly because insurance claims handling involves physical assessment that is harder to digitise.

The existential risk question: Whether fintech represents an existential threat to large incumbents or a competitive nuisance manageable through digital investment and selective acquisition remains debated. Most large banks have invested heavily in digital channels, achieved material cost savings, and retained deposit relationships through brand trust and product breadth. The more likely outcome is continued margin pressure in specific segments rather than existential displacement.

Global Bank ETFs

• iShares Global Financials ETF (IXG): Broad global financial sector exposure including banks, insurance, and financial services
• iShares MSCI World Banks ETF: Specifically banks (excludes insurance and diversified financials)
• SPDR S&P Banks ETF: US-focused bank exposure
• Invesco KBW Bank ETF (KBWB): US banks, equal-weighted
• iShares STOXX Europe 600 Banks ETF: European bank exposure

For UK domestic bank exposure, individual share investments in Lloyds, Barclays, HSBC, and NatWest provide direct access, as does the iShares UK Equity Index Fund which includes significant financial sector weighting.

How Global Investments Can Help

Financial sector investing rewards those who understand credit cycles, interest rate dynamics, and regulatory capital frameworks — nuances that are not apparent from basic financial ratios. At Global Investments, we provide HNW investors with informed guidance on financial sector allocation — whether that is assessing the appropriate weighting of UK banks within a domestic equity allocation, evaluating insurance company capital return potential, or constructing global financial sector exposure through specialist ETFs or active funds.

Our advisers monitor NIM trends, capital ratio developments, and regulatory changes to help clients manage their financial sector exposure through different phases of the credit and rate cycle. Contact our team to discuss the financial sector within your investment strategy.

This guide is for information purposes only and does not constitute financial advice. Bank and insurance investments involve credit risk, interest rate risk, and regulatory risk. The value of investments can fall as well as rise. Always seek qualified professional advice before making investment decisions.