This report set out to document why Europe's small market capitalisation is a structural handicap. It ends, on the evidence, documenting something more specific and more useful: not that the market is too small, but that it is too fragmented, too dependent on foreign capital, too concentrated in the wrong sectors, governed by a body industry can advise but not vote on, and — in its growth-company tier — too quietly labelled for the retail investors it is now recruiting to notice the difference.

Europe's stock market capitalisation is genuinely, substantially smaller than America's relative to the size of its economy — roughly 50-60% of GDP versus the United States' 224%. That fact is not in dispute. What this report set out to test is a more specific claim: that this gap is itself the structural cause of Europe's weaker innovation and competitiveness. After working through the academic finance-growth literature, the EU's own policy diagnostics, and detailed comparative research into how European capital markets are actually built, funded, and governed, the evidence supports a more precise conclusion than the original question implies. The raw size gap is real but is not, on its own, what the strongest research identifies as causal. What the evidence does support, with much greater confidence, is that Europe's capital markets are handicapped by fragmentation — of exchanges, of post-trade infrastructure, and of regulatory supervision — by big global investors increasingly choosing US stocks over European ones, by a sector composition that concentrates Europe's market value in mature, bank-financeable industries rather than the R&D-intensive firms equity markets serve best, by a specific, EU-wide design choice in how growth companies are admitted to public markets, which privatises admission gatekeeping to commercially conflicted intermediaries, and by growth-market listings that don't clearly warn investors of their risk. These are more precise, more actionable, and better-evidenced findings than "market cap is too small," and they point toward different policy fixe