Robinhood Chain After September 29: What the End of Free Gas Changes for the Stock Chain

The Robinhood Chain is the broker's own layer-2 network, running on the Arbitrum Orbit toolkit, storing its data on Ethereum and settling gas in ETH. Since launching on July 1, 2026 it has become the costliest surprise of the year: $1.02 billion sits in its contracts, more than on Polygon, and $93.5 billion in volume has passed through its venues since the start. What has carried that so far is something few would have expected on a stock chain: meme tokens from a mass-market launchpad. On September 29 the start-up funding that paid for this growth falls away. This overview takes the chain apart piece by piece, with figures collected against the DefiLlama interface on September 28, 2026, and with the wording Robinhood itself uses in its documents for the European market. It tells you what actually runs on the network, how you get there in practice, what the tokenised stocks are in legal terms and which points you should settle as an investor in Germany beforehand. Robinhood Chain at a Glance: A Layer-2 Rollup on Arbitrum Orbit with Chain ID 4663 A rollup is a network that executes transactions itself but stores their data in bundles on a larger blockchain and draws its security fro...