How does portfolio funding reduce risk?

It lets winners repay the funder for losers inside the same deal. In a cross-collateralized portfolio, the funder's return is paid from all the cases' proceeds together, so one or two losses do not wipe out the investment. In the worked example below, the same five cases return 0.8x when funded separately and 2.0x as a cross-collateralized portfolio.

How can a portfolio concentrate risk instead?

When the cases share a dependency. Cases run by the same law firm, against the same defendant, on the same legal theory or in the same court can succeed or fail together. A ruling on a common issue, a defendant's insolvency or the law firm's problems then affect every case at once, and the portfolio behaves like one large case.

How common are portfolio deals?

Growing. Among three commercial funders GAO collected data from, portfolio agreements rose from about 19% of new agreements in 2017 to about 39% in 2021, and the share of capital through portfolios from 28% ($28 million of $101 million) to 51% ($124 million of $240 million). Of 92 new portfolio agreements at those funders from 2017 to 2021, 80 were with law firms.

Who uses portfolio funding?

Mostly law firms, and companies with several claims. GAO found clients have more flexibility with portfolio funding: a company can use it to expand its business while budgets are tied up in litigation, and law firms can include defense-side matters that would be hard to fund alone. Legalist, per AltStreet's review, describes its portfolio investments as case portfolios with a single law firm.

Are portfolio deals larger?

Usually. GAO's three funders deployed about $4.5 million per portfolio agreement on average from 2017 to 2021, against $2.3 million per single case. Burford reported $3,383.3 million of portfolio capital provision assets at December 31, 2025, about four times its single-case assets.

Does a portfolio return less?

It can be priced lower, because the funder's risk of a total loss is lower. Terms vary by deal and are rarely public. The investor's question is whether the reduced chance of losing everything is worth any lower multiple, after checking how independent the cases really are.

Portfolio Funding

Litigation Finance & Legal Claims

Definition

Portfolio funding is litigation finance that covers a group of claims under one agreement, usually with a single law firm or company, with the funder repaid from the combined proceeds of the group. GAO describes portfolio arrangements as 'a law firm or corporation using a portion of the value of a group of cases in exchange for funding.' Burford's 10-K notes that its contractual relationships are often 'composed of multiple underlying litigation matters that are often cross collateralized rather than reliant on the performance of a single matter.'

Why it matters

Portfolio funding is the industry's main answer to the binary risk of single cases, and GAO's funder data shows the market moving toward it. Cross-collateralization works only if the cases are genuinely independent, and in a portfolio from one law firm or one company they often are not. A diversified-looking deal can carry a single point of failure in the firm's capacity, the defendant's solvency or a shared legal question. Before relying on a portfolio's diversification, list what the cases have in common and model what one shared ruling or one firm's failure would do to all of them.

Common misconceptions

•A portfolio is not diversified because it has many cases, because cases that share a law firm, defendant or legal theory can fail together.
•Cross-collateralization does not protect against total loss, because if most cases in the group lose, the pooled proceeds still fall short.
•Portfolio deals are not only for law firms, because companies with several claims use them too, though GAO found 80 of 92 at three funders were with law firms.
•A lower portfolio multiple is not necessarily a worse deal, because the probability of losing everything is also lower.
•Fund-level diversification and deal-level portfolios are different things, because a fund can hold many portfolios that all depend on the same few firms.

Technical details

Worked example (illustrative): separate cases vs a cross-collateralized portfolio

Five cases, $2.0 million each, $10.0 million in total.

Separately at 2.0x each: two wins return $4.0 million each, three losses return nothing, total $8.0 million, 0.8x.

As a portfolio, repaid 2.0x on the $10.0 million from combined proceeds: the two wins settle for $30.0 million and $25.0 million, $55.0 million in total.

Funder receives $20.0 million, 2.0x, about 36% of the combined proceeds; the client keeps $35.0 million.

If four of five lose and the fifth settles for $12.0 million, the funder is limited to the proceeds in this example: $12.0 million, 1.2x.

Dependencies that undo diversification

Same law firm: capacity, conduct or financial trouble affects every case.

Same defendant: its insolvency or a global settlement decides all claims.

Same legal theory: one appellate ruling can decide them together.

Same court or jurisdiction: one judge's schedule or a procedural rule change applies to all.

Same damages model or expert: a ruling excluding the expert hits every case.

What AltStreet's reviews and filings show

GAO-23-105210: at three funders, portfolio share of new agreements rose from about 19% (2017) to 39% (2021); capital share from 28% to 51%; 80 of 92 portfolio agreements were with law firms.

Burford 2025 10-K: portfolio capital provision assets $3,383.3 million and single-case $819.5 million at December 31, 2025; relationships often cross-collateralized.

AltStreet's Legalist review: portfolio investments, case portfolios with a single law firm, about half of the Fund IV book; Fund IV shifted from patent toward class action cases.

Burford's Form 10-Q for September 30, 2026 reports an 81% ROIC and a 25% IRR on its concluded and partially concluded balance-sheet assets since inception, on $4.01 billion of cumulative realizations across 303 concluded assets, with a weighted average life of 2.7 years weighted by realizations.

Questions for a portfolio deal

Are the cases cross-collateralized, and in what order are proceeds applied?

What do the cases have in common?

Can the client add or remove cases, and who decides?

Is the return capped as a share of total proceeds?

What happens if the law firm dissolves or the client changes counsel?

How investors apply the term

Investors usually apply this term by tying the definition back to the controlling documents and then asking which cash flows, rights, restrictions, or valuation assumptions it changes. A useful review looks at the term alongside fees, leverage, liquidity, reporting frequency, and manager discretion rather than treating it as a standalone concept.

The practical diligence test is simple: identify who benefits if the assumption is wrong, who has control when conditions change, and what evidence the investor receives after closing. Terms that cannot be reconciled to documents, cash movements, and monitoring data should be treated as marketing shorthand until proven otherwise.

Frequently asked questions

How does portfolio funding reduce risk?: It lets winners repay the funder for losers inside the same deal. In a cross-collateralized portfolio, the funder's return is paid from all the cases' proceeds together, so one or two losses do not wipe out the investment. In the worked example below, the same five cases return 0.8x when funded separately and 2.0x as a cross-collateralized portfolio.
How can a portfolio concentrate risk instead?: When the cases share a dependency. Cases run by the same law firm, against the same defendant, on the same legal theory or in the same court can succeed or fail together. A ruling on a common issue, a defendant's insolvency or the law firm's problems then affect every case at once, and the portfolio behaves like one large case.
How common are portfolio deals?: Growing. Among three commercial funders GAO collected data from, portfolio agreements rose from about 19% of new agreements in 2017 to about 39% in 2021, and the share of capital through portfolios from 28% ($28 million of $101 million) to 51% ($124 million of $240 million). Of 92 new portfolio agreements at those funders from 2017 to 2021, 80 were with law firms.
Who uses portfolio funding?: Mostly law firms, and companies with several claims. GAO found clients have more flexibility with portfolio funding: a company can use it to expand its business while budgets are tied up in litigation, and law firms can include defense-side matters that would be hard to fund alone. Legalist, per AltStreet's review, describes its portfolio investments as case portfolios with a single law firm.
Are portfolio deals larger?: Usually. GAO's three funders deployed about $4.5 million per portfolio agreement on average from 2017 to 2021, against $2.3 million per single case. Burford reported $3,383.3 million of portfolio capital provision assets at December 31, 2025, about four times its single-case assets.
Does a portfolio return less?: It can be priced lower, because the funder's risk of a total loss is lower. Terms vary by deal and are rarely public. The investor's question is whether the reduced chance of losing everything is worth any lower multiple, after checking how independent the cases really are.