Owned by the commons, extracting from no one. The largest gain isn't a faster trade — it's the rail beneath it: atomic settlement that dissolves post-trade fragmentation, corporate actions and disclosure built in, markets where speed buys no advantage. One rail for the whole life of equity — and the fairness layer is proven, not asserted.
Financial-market infrastructure is a rent-extracting natural monopoly — and below IPO scale, most of the economy has no rail at all.
Exchanges, clearing houses, and data vendors enjoy network effects and near-zero marginal cost, and extract heavily from that position.
Below IPO scale, 99% of companies can't access listed equity. Raising is bespoke and illiquid; private shares and employee stakes have nowhere to live.
Continuous trading hands a structural edge to the fastest, and a single trade can paint the price. The same shares trade at different prices in the same instant.
NYSE, Nasdaq, and state-backed exchanges are all tokenizing equity now. We can't win on the technology — and we don't try to. Every one of them is a for-profit vendor, and a vendor can only ever be one option among many. It can never become infrastructure a regulator mandates or a public programme funds, because that would be picking a private winner.
A credibly-neutral commons can be mandated, subsidized, and built upon. The ownership model isn't a constraint on adoption — it is the strategy.
Live proof, 2026. As SpaceX and OpenAI line up to go public, Nasdaq rewrote its index rules weeks before the listing — the press dubbed it "Lex SpaceX" — while retail demand for the private shares routed through SPVs charging ~4% up front + 25% of profits, and vehicles trading at a ~3,000% premium. A for-profit venue can rewrite the market's rules to win a single large listing; a commons structurally cannot. Capillary would not host these names — they are US mega-caps that will not list on a nascent European commons. They illustrate a structural pattern that neutral, participant-governed infrastructure removes for the markets Capillary does serve.
From a single community project to a graduated public company — listed and liquid by growing into it, not by one cliff-edge IPO. Four pillars, plain and real.
One neutral rail for cap table, dividends, votes, and transfers. Cheap, real, and light on regulation — the practical reason issuers adopt first.
Where issuers startFrequent batch auctions instead of continuous trading: one uniform clearing price per interval, so being fastest buys no advantage, and no single trade can fake the price. Settlement is atomic, so naked shorting and failed deliveries can't happen — every short is a real, borrowed share.
Speed-neutralA per-issuer automated market maker guarantees every holder a counterparty from day one — so a thin-name market isn't dead on arrival.
Liquidity from day oneCryptographically-verified corporate disclosure on equal terms for everyone — the shared data layer Europe lacks, built in from the start.
Equal accessToday a company is private until one high-stakes IPO day, then public overnight — and increasingly that day happens in New York. On one neutral rail a company can list on incorporation and let its market deepen as it grows: the backstop gives a counterparty from day one, the batch auction stays fair at any size, and the same cap table, votes, and disclosure carry through. Liquidity for employees and early backers becomes a continuous window, not a one-off event years away.
This is about where European companies start and stay — SMEs, community projects, the long tail — not about pulling mega-cap listings off existing exchanges. And it is a property of the architecture, not a forecast: the liquidity dial below shows the single mechanism that makes it continuous — efficiency rises smoothly as a market grows, with no threshold to clear.
The settlement, lifecycle, and transparency layers are instrument-agnostic: the same rail that carries shares carries debt. Community and SME bonds — how most renewable projects are actually financed — are the natural next instrument, on the same verticals and the same rail. Equity is where we start.
We built an open, reproducible market-mechanism simulator — 57 unit tests, validated against textbook competitive-equilibrium theory, regenerated with one command (python -m sim.reproduce). Every figure below traces to results/; none is rounded or embellished. Browse the simulator ↗ · read the paper ↗
One fair price for everyone, set by supply and demand — not by who was fastest.
The same orders arrive in sequence and match at scattered prices.
Captures all available gains-from-trade at every liquidity level, reproducing competitive-equilibrium theory across 800 random markets. Its decisive advantage over continuous trading is fairness — no latency edge, no paintable price — not allocative efficiency.
results/validation.txt · experiment.txtModelled sniping profit under batching is exactly 0, at every level of news volatility. Put through an explicit latency race, the sniper profits in continuous trading — and earns 0 when batched, no matter how fast it races.
results/sniping.txtThere is no per-trade price to paint: the reference stays at ~100 while a continuous book prints a fake 130. Pegging the price gets ~linearly costlier as liquidity grows.
results/adversary.txt · microstructure.txtA running Capillary trading floor across eight instruments. Get a funded guest account — no sign-up — place buy and sell orders into a sealed-book batch auction, and watch it clear every participant at one uniform price. The speed-neutral market from the proof above, live.
The differentiator — shown as a mechanism, not re-asserted. Three structures make the commons uncapturable in practice: who holds the protocol, who sets policy, and how it pays for itself.
The neutral protocol and treasury — uncapturable and purpose-bound. It guards a security-budget floor so the one real risk, under-funding, can't bite.
Two chambers — issuers and investors — each on one-member-one-vote, so no one buys control by holding more shares. Policy is set by the people who use the rail.
For-profit service providers compete where competition belongs — at the service edges, on top of the neutral core. Not for the core itself.
The commons funds itself with a flat per-transaction toll, capped to what the treasury needs, with any surplus returned to participants. Because the payers are the governors, it can't drift into rent.
Grant and blended finance lead the build — the core is never funded by a returns-seeker, so it is never owned by one.
Europe's capital-markets problem is structural, not a matter of efficiency. The DLT Pilot Regime proved that tokenized shares mean nothing if they ride the same rails under the same rules.
Capillary is the credibly-neutral commons the Draghi report, the Savings and Investments Union, and the ECB's sovereignty agenda keep describing. We lead with the neutral public post-trade rail: atomic settlement that dissolves fragmentation, programmable corporate actions, and a native transparency layer — integrated with ECB central-bank-money settlement, not competing with it.
The credibly-neutral commons the SIU, the single-CSD agenda, and ECB autonomy keep calling for — and a transparent, diversified home for the savings now trapped in deposits.
Read the alignment →An open, reproducible mechanism benchmarked to competitive-equilibrium theory — the keystone partnership for a joint Innosuisse / Horizon application.
See the proof →EU law already requires citizen ownership of renewables — a mandated flow with no good rail for thousands of micro-shareholders. We become that default rail. It's the missing piece, and where we start.
This is for you →One neutral rail for your whole equity life — cap table, dividends, votes, transfers, fair markets, and a backstop so your shares always have a counterparty.
What you get →No. There is no coin, no token offering, and no public sale. Shares are ordinary registered equity, given legal force by existing law (Switzerland's DLT Act, Liechtenstein's TVTG). The matching engine runs off-chain, and the cash leg settles in regulated e-money today and central-bank money next (the ECB's settlement rails) — not in a cryptocurrency.
Inside the regulatory perimeter, not around it. A neutral foundation stewards the protocol; an operating venue runs under an existing regulated path — the EU DLT Pilot Regime or a national DLT trading-and-settlement licence — with central-bank-money settlement. The design starts from the rulebook, not in spite of it.
The Pilot proved that tokenised shares change nothing when they ride the same rails under the same for-profit ownership. Capillary's variable isn't the technology — it's the ownership. A commons can be mandated, subsidised, and built upon; a for-profit venue structurally cannot. That is the thing the Pilot was missing.
Not a coin offering. Not a for-profit exchange or a venture-backed startup chasing a return. Not a competitor to the digital euro — it's the open rail any euro can settle over. It is public infrastructure, owned by the people who use it.
Open, reproducible simulator — 57 tests, benchmarked to competitive-equilibrium theory.
A real trading floor at cap-demo.mair.io — eight instruments, sealed-book batch auction.
A regulated energy-community deployment with a flagship issuer — what a first grant funds.
A pan-European public rail under a steward foundation and a member cooperative.
A market-design group for a joint Innosuisse / Horizon application — the keystone partnership for funding and credibility.
Co-author the grant →Partners aligned with SME capital access, market fairness, and the energy transition. The core is never funded by a returns-seeker.
Fund the build →Issuers, brokers, and energy-community developers for Phase-1 pilots — and a flagship issuer with proven, underserved demand to anchor the rail.
Become a founding issuer →Capillary is convened under Robomoe Genossenschaft, a cooperative registered in Vaduz, Liechtenstein — the legal home for a steward foundation and a member-governed commons, not a returns-seeking company. We're assembling the founding research, funding, and issuer partners now.