Sequence Markets (YC W26)

Execution layer for digital assets. Institutional-grade and regulated-first mindset. Controlled rollouts for retail and institutional traders.

[Sequence Markets (YC W26) @sequencemarkets]

@sequencemarkets will be at Consensus, May 5–7 in Miami. 👋

Anyone can vibe code a trading app.

But who runs underneath you?

Who manages where capital sits, where trades execute, how orders route across venues? Who handles actual exchange connectivity, hardware, and execution infrastructure?

That's Sequence.

One normalized API across every digital market ~ crypto, perps, prediction markets. We manage the infrastructure. You build on top.

Looking for builders, prop shops, and early testers.

https://t.co/mABlPRq9Zq

#Consensus2026 #DigitalMarkets #YC #PredictionMarket #crypto

[Sequence Markets (YC W26) @sequencemarkets]

Demo Day.
📸 Part 2. @ycombinator

[Sequence Markets (YC W26) @sequencemarkets]

You make a big trade. It moves against you. Now you’re deep in no man's land 🫤

Instead of being sucked into the void, there should be a big red button saying STOP.

Don’t worry, we have you covered. It’s built in.

https://t.co/Nw25fW17Z4

[Sequence Markets (YC W26) @sequencemarkets]

Real-world assets are everywhere, but the paths between them are broken

More specifically, the routes are broken.

We’re doing a great job putting assets onto digital rails. Treasuries, funds, and credit are starting to move into systems where they can be accessed more easily and globally. But once everything lives across different rails, venues, and wrappers, a natural question emerges: how does capital actually move through all of it? Good question. The market becomes a fragmented network.

Simple trades put up a facade that aren’t path problems, but they are. An asset can exist across multiple venues at once each, showcasing different liquidity, latency, fees, reliability, and legal constraints. The best outcome is the best route, not solely the price. Execution becomes navigating a messy, distributed system.

As RWAs scale, this gets harder. More rails = more rules = more points of failure. There needs to be a control layer that can route capital intelligently across these systems, based on real outcomes. If digital rails start expanding access, routing complements this and makes it work.

We’ve spent time thinking deeply about this at Sequence Markets, and are building with this exact problem in mind.

[Sequence Markets (YC W26) @sequencemarkets]

The barrier to entry for building today is much lower than ever before

You can spin something up very quickly now, connect APIs, get a strategy running, and it kind of works

Then you get to a point where there isn’t really a good place to use it or see what it’s doing over time

This is a problem

That’s more or less why we built the terminal

https://t.co/shTGLpOj1E

[Sequence Markets (YC W26) @sequencemarkets]

Oh yeah, we also let users backtest their strategies.

A lot of the edge comes from understanding behaviour. Why a strategy did what it did, where it broke from expectation, and what happened as it played out.

So we made it easy to replay that and make it visible.

See how you can do this: https://t.co/wGnBNWP8ZS

[Sequence Markets (YC W26) @sequencemarkets]

Most days at Sequence Markets HQ currently look something like this

People imagine startup building is big strategy and genius breakthroughs.

A lot of it is actually just looking at a screen long enough for it to confess.

Been quite a ride.

[Sequence Markets (YC W26) @sequencemarkets]

“Best price” is one of the most misread signals in trading. It looks nice and feels objective, but it’s usually just the surface. What really decides the trade is everything underneath it like slippage, fees, latency risk, freshness, and reject risk, which is why we don’t optimize for quotes, we optimize for outcomes.

Learn more: https://t.co/EyCZ2qJ8HA

[Sequence Markets (YC W26) @sequencemarkets]

Demo Day.
@ycombinator

[Sequence Markets (YC W26) @sequencemarkets]

Markets look much cleaner from the outside than they actually are.

The longer you spend close to markets, the harder it is to believe the neat version of them. Almost nothing moves in a straight line. What looks like a simple trade is often just a surface view of something much messier underneath, where venues, timing, and route quality decide what happens.

That changes your philosophy. You stop fixating on the first quote and start paying attention to the path, because the market isn’t one place anymore. It’s a spread-out system, and how you move through it ends up mattering as much as where you start.

That’s been a big part of our thinking at Sequence. We’re not interested in making the market sound more complicated than it is. We’re interested in understanding it properly and building from there.

[Sequence Markets (YC W26) @sequencemarkets]

In the past 2 weeks alone, we’ve seen 150 signups with an anticipated $106B in trading volume

The game is changing fast, and execution is becoming the real frontier

Get in early:
https://t.co/0kmS49gYCJ

[Sequence Markets (YC W26) @sequencemarkets]

One thing we haven’t really called out yet is our focus on performance:

In live trading environments, latency, callback speed, and execution overhead matter a lot.

We spent a lot of time prioritizing this from the ground up. The SDK is built around WASM-based strategies, with ~1μs per callback and sub-20ms latency.

That foundation is designed so developers can focus on strategy logic without fighting the underlying system.

The mindset here is “AI that acts,” so the tolerance for delay disappears pretty quickly.

The docs go deeper into how this actually works:
https://t.co/eOJo65rAly

[Sequence Markets (YC W26) @sequencemarkets]

2024 was RAG chatbots.

2026 is agents that do things - better & smarter

It’s pretty clear where the space is heading, so we built into that with 80+ MCP tools connected directly to trading infrastructure covering orders, market data, portfolio, account, and more.

See what that looks like in practice 👇:

https://t.co/LIXAJ9RoY4

[Sequence Markets (YC W26) @sequencemarkets]

Apparently opening demos was a mistake

We recently went public with Sequence Markets and March is already fully booked for demos

But we’re still rolling out early access to people on the waitlist 👀

Join here: https://t.co/0kmS49gYCJ

#crypto #DigitalAssets #trading

[Sequence Markets (YC W26) @sequencemarkets]

We have pretty fast execution

- sub-17ms websocket fills
- sub-5ms FIX
- under 6hr settlement for partners

Cool, but the real question is whether that speed actually produces a meaningfully better outcome

And we don’t cut corners to get there

[Sequence Markets (YC W26) @sequencemarkets]

Crypto is messy enough to prove the problem

Tokenized markets are just going to make it more obvious

[Fondo.com @Fondocom]

🚀 @sequencemarkets launched! Unified Crypto Trading for Spot & Perps Across CEXs and DEXs

"$15B+ liquidity. One click."

🌐 https://t.co/s8jTL9HJ5p

Congrats @RealPeterBai & @muhammad_awan0!!

[Y Combinator @ycombinator]

.@sequencemarkets is building the execution layer bridging TradFi and DeFi: one stack for routing, execution certainty, and analytics across fragmented crypto and tokenized-asset venues.

Congrats on the launch, @RealPeterBai and @muhammad_awan0!

https://t.co/OkONwnbEAg

[Sequence Markets (YC W26) @sequencemarkets]

🚨 Sequence Markets is live. (YC W26)

They sell your order flow. They get paid. You get worse fills. That's the business model.

We built the opposite.

One execution layer. HFT-level infrastructure. For everyone ~ retail, funds, pros.

Our standard is already higher than whatever you're using now. Best execution. Full transparency. No PFOF. No front-running. No selling your flow.

Need more than baseline? Co-lo. Custom builds. Dedicated pipe. We do that too. You scale, we scale with you.

We’re evolving to one account, best price, everywhere. We’ll fight the regs and build it right.

Right now we’re the router that gets you there. That’s where we are, not where we stop.

If you're not using us? You're leaving edge on the table. Your ego is the only thing stopping you.

Join the Waitlist: https://t.co/TrkdQwqYmg

#YCW26 #Crypto #Trading #Execution #NoPFOF #Fintech

[Sequence Markets (YC W26) @sequencemarkets]

We're slowly rolling out access to those on our waitlist.

Keep an eye on your emails! 👀

#trading #Crypto #DigitalAssets #Really #Fast