Measure a deal sourcing program with leading indicators, not closings: coverage of the On-Market deals that fit the mandate, penetration of the Off-Market universe, speed from first sight to NDA, the health of the source base, and conversion between stages. Deals closed confirms the program a year later. These five tell you within a quarter.
The problem every private equity BD lead runs into is the same one. The partners want to know whether the sourcing program is working, and the only number everyone agrees on is the one that takes longest to arrive. A target contacted this quarter may not transact for a year or more. One closed platform or add-on is a sample of one. By the time deals closed can answer the question, the program has usually been restructured twice.
This is a measurement framework for the person who owns sourcing at a lower middle market firm. It assumes the mandate is written and a target universe exists. If the universe is not built yet, start with how to build a target universe, because every number below is a fraction of it.
Why closings make a poor scorecard
Deals closed is the right outcome and the wrong management tool, for three reasons.
The lag. Off-Market work in particular runs on owner timelines, not the firm's. A conversation held this year produces a process next year, if at all. Judging the program by what closed this year judges last year's program.
The sample size. At lower middle market scale, a firm closes a handful of deals a year. A handful is not enough to separate a program that works from one that got lucky, or a program that works from one that hit a slow market.
The attribution. Most closed deals touched several channels on the way. The advisor sent the teaser, but the firm had been talking to the owner for a year. Crediting the closing to one channel teaches the firm the wrong lesson about where to spend.
None of that makes closings irrelevant. It makes them the annual audit of the leading indicators, not the monthly scorecard.
Metric 1: Coverage of the On-Market deals that fit
Coverage asks what share of the relevant deals the firm actually saw. It is the only metric that measures what you missed rather than what you received, which is why it matters most.
Sutton Place Strategies' Origination Benchmark Report, published March 2025 on fiscal 2024 data from 176 private equity firms, put median market coverage at 17.6%, with the top quartile at 27.5%. The cut that matters more is by process type. Median coverage was 38.8% on broadly marketed processes and 3.4% on limited ones. The tighter the process, the less the median firm sees. A newer edition of the report exists; its coverage figures were not public when this was written, so treat these as the 2024 baseline, not as current.
You can measure your own version without a benchmarking subscription:
- Pull every transaction that closed in your sector and size band over the last twelve months, from announcements, database records and advisor tombstones.
- Mark each one in-mandate or out, using the written mandate rather than hindsight.
- Count how many of the in-mandate deals your firm saw before signing, and at what stage.
Seen divided by in-mandate is coverage. Split it by process type if you can tell. A firm with strong coverage on broad auctions and weak coverage on limited processes has a relationship problem, not a volume problem.
Metric 2: Penetration of the Off-Market universe
Coverage measures the On-Market. The Off-Market and Pre-Market need a different denominator, because there is no list of closed deals to measure against until it is too late.
The metric is penetration: the share of the target universe with a logged, two-way contact inside a set window. Not an email sent. A reply, a call held, or a meeting.
Track it in three bands:
- Untouched. In the universe, never contacted.
- Touched. Contacted, no two-way conversation yet.
- Engaged. At least one real conversation, with a recorded next step and a recheck date.
A program can send a lot of outreach and still show flat penetration, because it keeps working the same responsive subset. The engaged band, and how fast companies move into it, is the leading indicator for Off-Market closings a year or more out.
Metric 3: Speed from first sight to NDA
On deals that come through an advisor, position in the queue is set early. The buyers who reply first, sign first and answer first are the ones the advisor calls on the next deal.
Measure, per deal: the date the firm first saw it, the date it asked for the NDA, the date the NDA was executed, the date the CIM arrived, and the date the firm gave an answer. The intervals the firm controls are the request, the signature and the answer. Those are where most of the avoidable delay sits. The step-by-step version of that sequence is in time to NDA, time to CIM.
Read the median and the slowest decile, not the average. One deal stuck for a month in legal review says more about the process than ten fast ones.
Metric 4: Source health
A pipeline is only as durable as the sources feeding it. The same Sutton Place Strategies report gives a sense of scale for fiscal 2024: the median firm logged 730 deals a year from 199 intermediary sources, about 3.4 deals per source, and added 42 new sources in the year.
Three numbers to watch on your own book:
- Active sources. How many intermediaries sent at least one in-mandate deal in the last twelve months.
- Concentration. What share of in-mandate deals came from the top ten sources. High concentration is fragile. One advisor retiring or changing firms moves the whole pipeline.
- New sources added. Whether the base is growing or just being maintained.
Source health is also where staffing shows up. The same report put the median firm at one dedicated BD professional. Coastal Partners' Q2 2026 BD report counted 999 dedicated BD professionals across 450 US and Canadian private equity firms. Roughly two hundred active sources is a lot of relationships for one person to keep warm, and the decay shows up in this metric before it shows up anywhere else.
Metric 5: Conversion between stages
Define the stages once and keep them fixed: seen, NDA signed, financials reviewed, first owner or advisor meeting, IOI, LOI, closed. Then measure conversion between each pair, split by channel (Off-Market, Pre-Market, On-Market) and by source.
There is no defensible public conversion benchmark at this size. Sutton Place Strategies' fiscal 2024 data put the median share of a firm's pipeline that transacted to any buyer at 30%, which is a useful reminder that most of what any firm reviews never closes for anyone. Beyond that, your own trend is the benchmark. What matters is movement:
- Seen-to-NDA falling usually means volume is rising from deals outside the mandate.
- NDA-to-financials stalling usually points at speed or at advisor relationships.
- First-meeting-to-IOI falling often means the screen upstream is too loose, and partner time is going to companies that should have been cut earlier.
The two numbers that reliably mislead
Raw deal volume. Volume rises fastest from broadly marketed processes, which are the deals every other buyer also sees. A firm can double its reviewed count and lose ground on the limited processes and Off-Market conversations that produce the better entry points. Volume is a denominator, never a score.
Self-reported "proprietary" share. Ask five people at the same firm what counts as proprietary and you get five answers. A deal the firm heard about one day before a broad process launched is often logged as proprietary. Unless the definition is written down and applied by someone without an incentive to stretch it, the number trends upward regardless of what is actually happening. The distinctions worth keeping are in what proprietary deal flow actually means.
Putting it on one page
The scorecard that works fits on a single page and runs on a fixed cadence:
| Metric | Cadence | What a bad trend usually means |
|---|---|---|
| Coverage, by process type | Quarterly | Missing limited processes; relationships thin |
| Universe penetration (engaged band) | Monthly | Outreach recycling the same responsive subset |
| Speed to NDA and to answer | Monthly | Internal legal or partner bottleneck |
| Source health | Quarterly | Concentration risk; BD capacity stretched |
| Stage conversion, by channel | Monthly | Mandate drift or a loose screen |
| Deals closed | Annually | The audit, not the scorecard |
Each line needs an owner, and the definitions need to be written down before the first quarter is measured. Changing a definition mid-year resets the trend.
Where the measurement breaks in practice
Most firms already know they should track these. The usual failure is not the metric but the logging: outreach that lives in one person's inbox, NDA dates nobody recorded, rejected targets with no reason attached. A metric built on incomplete logging is worse than none, because it looks authoritative.
On OmniSource, every target and deal moves through a logged pipeline across Off-Market, Pre-Market and On-Market, with the outreach, the NDA and CIM chase, and the recheck dates recorded as the work happens, so the inputs to these metrics exist without a separate tracking exercise.
For the broader origination picture, including how the advisor and owner side of the market sees the same process, BizNexus covers it at deal origination.
The short version
Score the program on what it can show inside a quarter: how much of the relevant market you saw, how much of the universe you actually reached, how fast you moved, how healthy the source base is, and where deals stall between stages. Let closings audit those numbers once a year. Do not let closings replace them.