What it does
Rankbuilder is a league-table builder. Four tabs across the top — Private Equity, Corporate, Investment Bank, Law Firm — each rank the most active entities by M&A activity, with a sidebar of filters that narrow the universe in place. A Mode toggle (All / Acquirers / Sellers) flips whether the ranking counts buy-side deals, sell-side deals, or both.
The visible list is capped at 150 (PE / Corporate) or 100 (Banks / Law Firms). The cap is intentional — beyond ~180 ranks, scrolling stops being a useful way to find anything, and the right move is to narrow filters.
When to use it
Build any league table on demand. "Top 25 PE acquirers in healthcare in 2026" or "top 10 sell-side banks on $100M–500M industrial deals last year" — both are two-or-three filter selections away.
Sourcing. Find the most active acquirers in your sector before reaching out. Rank order is a first-pass priority list.
Benchmark a known firm. Filter to that firm's sector + geography and read where they fall — useful for performance narratives, fundraising decks, and competitor briefings.
Where to access it
How to use it
1. Pick a tab. Private Equity / Corporate / Investment Bank / Law Firm
2. Pick a Mode. All (combined) / Acquirers (buy-side only) / Sellers (sell-side only).
Most pitch-relevant rankings live in one of the two scoped modes.
3. Filter in the sidebar. Two filter sections:
Entity-side filters — Name search, Size (multi-select; not on Corporate tab), State/Province, Country. Corporate tab adds a Public / Private / All radio.
M&A filters — Year, Buy-side Type, Sell-side Type, Deal Size, Sector (of the target), Country (of the target). These narrow the deals that count toward the rank, not the entities themselves.
Tips
Narrow the M&A filters first. Entity-side filters constrain who's in the universe; M&A filters define which deals count toward the score. The interesting league tables come from the second.
Watch the M&A-vs-entity sector distinction. Sector (target) in the M&A section is the target company's sector, not the ranking entity's. For "top tech-focused acquirers," pick a tech sector under M&A filters — not on the entity side.
Mode = Sellers is underused. Most users default to All. Sell-side rankings often surface advisors and sponsors who don't show up in the louder buy-side tables.
Combine with Compare. Use Rankings to find the top N firms in a slice; take 3–4 of them into Compare for the side-by-side detail.
FAQ
Q: Why are some entities missing that I'd expect to see?
Either (a) they fall below the tab's visible cap given the current filters, (b) they don't have any deals matching the M&A filter combination you've set, or (c) they sit beyond the 1,000-entity data ceiling for that tab (rare except for the very long tail).
Q: Why is Size missing on the Corporate tab?
Corporates use a Public / Private radio instead — public/private is the meaningful axis for strategic acquirers. PE firm size tier (Mega / Large / MM / Small) doesn't map onto operating companies.
Q: How does Rankings differ from Analytics?
Rankings is who — sortable ranked lists of entities. Analytics is what's happening — charts of market activity over time. Pair them: Analytics tells you the sector is consolidating; Rankings tells you who's doing the consolidating.