# Who Wins Ethereum Block Building Auctions and Why?

- Speakers: [Danning Sui](https://streameth.org/speakers/danning-sui), [Burak Öz](https://streameth.org/speakers/burak-oz)
- Channel: [Devcon 7 SEA](https://streameth.org/devcon_7_sea)
- Date: 2024-11-14
- Duration: 24:26
- Watch: https://streameth.org/watch/6735848a9dbb7a90e1e9de85

## Description

Today, top 3 block builders produce over 90% of blocks on Ethereum via MEV-boost auction. The block builder market's dynamics evolve rapidly and has significant impact on the development of private mempools, wallets/apps orderflow auctions, and censorship resistance topic. In this talk, we share an overview of why the top builders win the most market share, using orderflow composition and bidding behavioral data. We hope to highlight the centralizing risks and failures of current market design.

## About the speakers

### Danning Sui

Data at [Flashbots](https://flashbots.net/), Research Council at [TLDR Fellowship program](https://www.thelatestindefi.org/), Co-host of [Indexed](https://x.com/indexed_pod) Crypto Data Podcast

### Burak Öz

Ph.D. candidate at the Technical University of Munich (TUM) and incentives researcher at Flashbots