Sebastian Quintero

Cofounder @tradeupdown
MIT CS & Econ S.B. + M.Eng
ex-goldman equities quant dev

[Sebastian Quintero @Sebastianq2001]

One of the more interesting things we've been working through at @tradeupdown is fair value and liquidity provision for these short interval mkts.

Was surprised to see how simple a binary contract looks on the surface compared to the amount of risk that goes into quoting one. Volatility, time to expiry, inventory, adverse selection and jump risk are just a few of the params we have to account for across asset classes.

Starting to really understand why institutional MMs are finding this space interesting to take exposure on. There's a lot more market structure underneath these products than the consumer UI suggests.

[updown @tradeupdown]

introducing the first interval markets on pre-ipo stocks.

trade 15-minute intervals on Openai and Anthropic via @entropyIO's HIP-3 DEX on Hyperliquid, only on updown.

[Sebastian Quintero @Sebastianq2001]

Very bullish on this new wave of access to some of the biggest private names in tech atm.

@tradeupdown just launched 15/60min interval markets on OpenAI and Anthropic, building on top of Entropy's HIP-3 perp markets to allow even faster trading on these names.

Excited to see what else gets built as pre IPO perps become an underlying primitive for new products.

[Sevenup @Sevenup27]

Missed Lighter and Variational?

Don’t miss Entropy

Register here: https://t.co/jMrWFFt7E7

A new perpetual DEX focused on markets and pre-IPO stocks, including giants like Anthropic and OpenAI

It’s built on Hyperliquid’s HIP-3, and its total trading volume has already surpassed $1 billion

Best farming strategy right now:

Open a long BTC on Entropy and a short BTC on Variational, so you stay market-neutral

[Sebastian Quintero @Sebastianq2001]

@RavensFan654321 We’re saving your spot for 4th in the division dw

[Sebastian Quintero @Sebastianq2001]

Really interesting reveals at HOOD Summit 2026 today. Very excited to see this continued push toward democratizing access to derivatives / 24/7 trading for retail.

Pair perps with Robinhood Chain and tokenized equities and the vision gets even bigger. Global access to US market exposure + an entirely new ecosystem of financial products able to be built on top.

Excited for whats to come

[Vlad Tenev @vladtenev]

Robinhood is bringing America its first true perps.

No expiry, with P&L settled every 15 minutes.

A new chapter for US derivatives.

[Sebastian Quintero @Sebastianq2001]

Lots of profit to be made by the after hours moves on nvda this week👀 check out the live PnL tournament on @tradeupdown

[updown @tradeupdown]

one of our traders took $20 and turned it into $360 in profit just trading 5-minute $NVDA markets.

join updown today and start copying their trades.

[Sebastian Quintero @Sebastianq2001]

Def a lot of appeal to celebrity-backed tokens at the start, but think there needs to be more discussion around transparency when the person driving the market can change their position on such short notice.

When attention and liquidity are this concentrated, consumers can become the ones that end up paying the price.

[Gorilla @CryptoGorilla]

Jack Doherty just made $213,000 rug pulling his coin

After investing $2,400 and promoting it on X & TikTok, he updated his thesis saying “we’re going to $10m”

1 minute later he sold his entire position

Up $213k + creator fees

[Sebastian Quintero @Sebastianq2001]

Follow along as I 20x my returns on @tradeupdown

Not @strangeraisin tho sorry not sorry

[Ishan Shah @strangeraisin]

Top Kalshi trader vs. MIT Quant

My cofounder @Sebastianq2001 and I are doing a public $500 → $10,000 trading challenge on @tradeupdown.

We both start with $500. No deposits after that. Every trade, thesis, position and PnL gets posted publicly on Updown as we go.

Anyone can follow along, copy our trades, or clown us.

First to $10k wins.

We’ll be trading intervals and 0DTE options on stocks and crypto. Follow the whole thing on Updown.

[Sebastian Quintero @Sebastianq2001]

this guy gets it

[HelgaWeb3 @Helgaweb_3]

updown makes options trading actually understandable.

Pick a stock and decide whether it's going up or down. No minimum buys or market hours to worry about, thanks to their fractional contracts and 24/7 markets.

The best place to start if you've been curious about options. They're also running a $1,000 tournament right now, so don't miss out!

[HelgaWeb3 @Helgaweb_3]

updown makes options trading actually understandable.

Pick a stock and decide whether it's going up or down. No minimum buys or market hours to worry about, thanks to their fractional contracts and 24/7 markets.

The best place to start if you've been curious about options. They're also running a $1,000 tournament right now, so don't miss out!

[Sebastian Quintero @Sebastianq2001]

Funny to see TradFi as big as Cboe riding the wave of binary contracts.

Bernstein now expects financial contracts to make up nearly half of prediction market volume by 2035. Yet another signal that demand for simpler, short horizon derivatives is becoming impossible for traditional finance to ignore.

Onchain infra is only going to accelerate this. Global access, 24/7 markets and a much lower barrier to exploring new ways to express a view.

Exactly what we're building @tradeupdown

https://t.co/bk6o7nJBmr

[Sebastian Quintero @Sebastianq2001]

@DustinGouker Gambling on gambling🔥

[Sebastian Quintero @Sebastianq2001]

@franklin0fweb3 Agreed! would love to talk more on this. dms are open

[Sebastian Quintero @Sebastianq2001]

I do think the rise of perps proves there's real consumer demand for leverage and capital efficient ways to express directional views.

Although I'm not really convinced perps have to be the end state, despite the narrative thats being pushed by these larger venues.

Options already give traders leverage, defined downside and far more ways to structure a view. As stock tokens bring US market exposure onchain, feels like there's a massive opportunity to rethink how consumers access options too.

[Sebastian Quintero @Sebastianq2001]

@0xlukasinho Def agree with this. Been working on a platform to cater specifically to short term options onchain for diff assets would love your take on it. dm me if interested!

[Sebastian Quintero @Sebastianq2001]

We believe Updown can become the home for short term derivatives onchain.

The growth of perps and 0DTE options has shown just how much demand there is for expressing short horizon views, but these products are still largely built for traders who already understand derivatives.

We want to change that. Robinhood Chain gives us the rails to bring US equity exposure onchain, while Updown brings the trading experience, conversation and community around it.

Excited for what's to come as we bring short term options to the forefront of how the next generation trades onchain.

[updown @tradeupdown]

introducing updown.

the social onchain derivatives exchange.

trade options and intervals on US equities, anywhere, anytime.

[Sebastian Quintero @Sebastianq2001]

I think as ppl continue to demand more transparency, consumer trust is going to become a real wedge between trading platforms.

We're already seeing how quickly favor can turn when users start questioning pricing, immediate PnL or reported volumes.

Feels like the venues that make transparency a core part of the product will have a real advantage long after the hype dies down. History really do be repeating itself

[wale.moca 🐳 @waleswoosh]

Deleted my fomo account, these grifters and their fake PnL associates can extract from someone else, I'm done with this shit

[Sebastian Quintero @Sebastianq2001]

Been digging more into the recent Kalshi wash trading allegations.

The repeated ~$5.5k trades away from mid are def interesting, but feels hard to draw a conclusion from the pattern alone. Between trading algos, liquidity incentives and rebates, there are a bunch of mechanics that can drive notional volume.

Just makes me question how much headline volume actually tells us about organic demand in these markets.

https://t.co/oFzLvC4uTf

[Sebastian Quintero @Sebastianq2001]

@starptrs Pure alpha on these markets if u play them right

[Sebastian Quintero @Sebastianq2001]

@dontoverfit impressive numbers, are you mainly trading crypto atm?