How we think about liquidity in fragmented markets

Modern markets are spread across many venues. For a liquidity provider, that fragmentation is both the challenge and the reason the job matters.

One market, many venues

In the United States alone, the same instrument can trade on more than a dozen exchanges, each with its own rules, fee schedules and order types. Equities, options and futures each have their own structure, and prices on related instruments move together in ways that are not always obvious.

For investors, this means the best available price is not always in one place. For liquidity providers, it means that quoting well requires a clear, consistent view of the whole market rather than a single order book.

What good liquidity looks like

We think about liquidity in simple terms. A good market maker should:

• Be there. Quote continuously, including when markets are volatile and liquidity matters most.
• Be consistent. Prices for related instruments should make sense together, across venues and asset classes.
• Be disciplined. Every quote carries risk, and that risk has to be understood and managed in real time.

Research as a daily practice

Our research is grounded in data. Researchers and engineers work side by side to study how markets behave, test ideas carefully and turn what works into production systems. Most ideas do not survive testing, and that is how it should be.

We hold ourselves to a simple standard: a model is only as good as its performance in live markets, under real conditions, over time.

Why it matters

Reliable liquidity lowers trading costs for everyone, from large institutions to individual investors. Contributing to fairer, more efficient markets is what we set out to do every day.