Brokered Deals vs. Proprietary Sourcing: What the Research Actually Says

Most buyers do both and think about neither. They sign up for broker distribution lists, they send some cold outreach, and the mix that results is an accident of whoever happened to be responsive that quarter. The two channels have genuinely different economics, and the case for each is more specific than the usual arguments suggest.

Stanford Graduate School of Business treats both as legitimate in the 2026 edition of A Primer on Search Funds, and is unusually frank about the tradeoffs on each side. What follows is what the research says, channel by channel.

The one-sentence case for brokered deals

The Primer puts it about as compactly as it can be put:

The advantage of brokered deals is that the target company is actively looking for a buyer. In contrast, an industry-focused search often yields conversations with business owners who had not yet considered selling their companies.

— Primer, p. 36

That is not a small advantage. Every difficulty in direct sourcing — establishing that an owner is genuinely willing to transact, discovering there is no succession trigger, spending months on someone who wanted a free valuation — is pre-solved when the company arrives already engaged with an advisor.

The cost of solving it, on the seller's side, is documented. Axial's 2026 M&A Fee Guide, based on 331 North American advisors surveyed in the second quarter of 2026, reports an average effective success fee of 5.7% of transaction value on a $5 million deal, falling to 4.1% at $20 million. Those are sell-side fees paid by the business owner to their own advisor, and they are averages, not medians. Roughly seven in ten firms also charge some form of engagement fee before closing, most commonly $5,000 to $10,000 a month, and 79% write a minimum success fee into the agreement.

An owner who has agreed to all that has demonstrated intent in a way no cold conversation can.

What a represented process does to a buyer

The same commitment that makes a brokered company real also makes it contested. The Primer is direct about how search-fund-scale buyers fare in that setting:

If the company is for sale in an auction, private equity firms or strategic acquirers (with their committed capital, proven deal execution capabilities, and incumbent lender relationships) generally have an advantage over search funds.

— Primer, p. 26

It adds elsewhere that "a compressed timeline may make it difficult for a searcher to compete against established private equity firms with a team of professionals and an ability to hire outside help" (p. 40).

Axial's foreword asserts that top advisors "can drive a 10 - 40% higher valuation" for their clients — a claim the guide states without a supporting figure anywhere in its eighteen pages, so it belongs in the column marked Axial estimates rather than survey finding. But the direction is what an advisor is hired to deliver, and a buyer should assume the process exists to produce it.

The selection problem

The sharpest passage in the Primer's discussion of intermediaries concerns what reaches you, and when:

While brokers may bring actionable deals, their ultimate goal is to secure the highest price possible for a good deal fee. Search funds may end up competing with private equity funds on price and ability to execute. One investor noted that brokers brought deals to search funds only after credible private equity investors with committed capital had already passed on them, meaning searchers were likely not seeing the most attractive deals.

— Primer, p. 36

This is one investor's observation, reported by the Primer, not a measured finding — but the incentive behind it is plain. An advisor with a fee tied to price and a fiduciary duty to a seller will approach the buyers most likely to pay and most likely to close, in that order. If your capital is not committed and your execution record is short, you are further down that call list, and what reaches you has been shaped by everyone above you declining first.

The Primer notes the same dynamic on the investment banking side: "Investment banks are more likely to show promising opportunities to private equity firms that have committed capital sources or to investors with whom they have a prior relationship" (p. 36).

Reaching intermediaries is its own campaign

Buyers often treat the broker channel as the low-effort option. The Primer disagrees:

Marketing to business brokers, boutique investment banks, and other intermediaries requires intensive effort. Searchers have spent multiple weeks and sometimes months generating lists of contact information for business brokers.

— Primer, p. 36

The market is large and uneven. The Association for Corporate Growth has more than 11,000 members and the International Business Brokers Association more than 1,800, and the Primer observes that "the quality and sophistication of brokers varies widely" (p. 35).

It also records one searcher's attempt to solve that with volume: a mass-email campaign to nearly 1,100 brokers produced over 100 deal opportunities in the following months, one of which led to a successful acquisition (p. 36). That is a genuine result and also a familiar conversion profile. The broker channel run at scale is volume outreach with a different recipient.

Axial's data explains part of why cultivating it is slow. Among its 331 respondents, 76% work at firms with ten or fewer employees, 37% closed between one and three sell-side engagements in the past twelve months, and another 6% closed none. The channel is not a handful of large distributors; it is thousands of small practices, most of which will complete a few transactions this year, possibly none in your sector or size range.

The paid-introduction options

Between cold outreach and waiting for brokered flow sits a set of arrangements the Primer describes in some detail.

Buy-side sourcing firms. "A growing number of service providers and buy-side brokers can help searchers … by conducting outbound direct mailing and calling prospective sellers. These parties typically receive a monthly retainer and a deal success fee" (p. 35). This is outsourced origination — the same work, performed by someone else, on a retainer-plus-success basis.

River guides. The Primer's term for an industry insider engaged to open doors: "typically a retired CEO or head of the industry trade association" who brokers introductions to potential sellers, compensated with a deal success fee "typically 0.5 to 1 percent of total deal size, often with a modest cap" (p. 35). Their function is precisely defined: "The river guide's main role is to call prospective sellers and ask them to take a call from the searcher" (p. 32, p. 35).

That second model is interesting because of what it prices: the conversion of a cold contact into a warm one, which the Primer elsewhere identifies as the single most valuable thing in outreach — "A warm introduction is always better than a cold call" (p. 34). No list changes hands, and no access to a marketed process.

Splitting your time between the two

The Primer offers one worked example of allocation, presented as an illustration rather than a recommendation: searchers "might" spend 75% of their time on an industry-focused search and 25% reviewing deals from brokers and intermediaries (p. 28).

The logic behind a split like that is worth stating even if the specific ratio is not prescriptive. Brokered flow is low-effort to monitor and low-probability to win. Proprietary sourcing is high-effort and, when it works, uncontested. Reviewing incoming deals costs you almost nothing per deal, so there is no reason to refuse the channel; building an origination capability costs a great deal, so there is every reason not to do it half-heartedly.

The failure pattern is the inverse: buyers who spend most of their attention on incoming deals because responding feels productive, and who then run a thin, intermittent outreach effort that never accumulates enough conversations to produce anything.

What each one is good at

Brokered deals give you a qualified seller, prepared materials, a defined timetable, and a professional counterparty. You pay for that in price, in the number of bidders beside you, and in your position on the call list. They are most useful when your differentiator is speed and certainty of close rather than access.

Proprietary sourcing gives you a company nobody else is talking to and an owner who has not anchored on a number. You pay for that in months, in rejection, and in the risk of discovering — late — that the owner was never going to sell. It is most useful when you have a genuine sector thesis and the patience to let a transition arrive rather than catch one in flight.

Axial's respondents supply the reason the second channel is not optional. Asked to name their firm's single biggest challenge in free text, 32% of 237 respondents named sell-side deal flow and quality, and 18% named deal sourcing and marketing. Half the intermediary market says the hardest part of its job is finding companies whose owners are ready. Whatever else that tells you, it tells you that a buyer waiting for that channel to fill up is waiting behind everyone else who is waiting.

The problem underneath both

Both channels ultimately resolve to the same problem: establishing that a specific company is worth your time and that a specific owner will transact. Brokers solve it by charging the seller to solve it in advance. Direct sourcing requires you to solve it yourself, company by company, and most of the answers will be no.

The Primer's own view is that the "no" is not a wasted output — a searcher "cannot afford to spend time, money, and energy getting to know a company, only to find out the owner is not truly committed to a sale" (p. 33). The point of qualification is to reach that conclusion early rather than in month four.

Choose the mix on that basis. If you can reliably win a competitive process, the brokered channel is efficient and you should use it heavily. If you cannot — and most individual buyers, independent sponsors, and first-time acquirers cannot — then the money spent competing there is better spent on being the only person in the conversation.

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