You asked about Trading
32 people built something like it. 0 are gone.
That is 0% of the ones whose fate we could settle, against 23% across the whole register.
| Launched | What it was | Today |
|---|---|---|
| 2022-11-30 | wyldcard.io | still up |
| 2021-08-20 | duedilly.io | still up |
| 2019-01-01 | YCKalshi 1st federally regulated exchange where people can trade on events · kalshi.com | still up |
| 2022-02-27 | trylevel2.com | still up |
| 2022-03-04 | web.tradexapp.co | still up |
| 2014-06-01 | YCSFOX Crypto-currency trading platform. · sfox.com | still up |
| 2022-06-01 | YCNovig America's #1 Sports Trading App · novig.com | still up |
| 2021-01-01 | YCHapi Stocks and cryptos trading app with zero commissions and no minimums… · hapi.trade | still up |
| 2022-06-01 | YCAlgoTest Ecosystem for options trading in India · algotest.in | still up |
| 2022-01-01 | YCAnfin A multi-asset trading platform dedicated to retail investors · anfin.vn | still up |
| 2021-06-01 | Helping Indians make better financial decisions. · marketfeed.com | still up |
| 2022-01-01 | Plaid for trading · snaptrade.com | still up |
| 2021-06-01 | The Trading Terminal For Crypto Traders · gethypertrader.com | still up |
| 2026-06-01 | YCDonkey The AI-native trading company: factory prices, delivered, one number · donkey.trade | still up |
| 2019-06-01 | Institutional equities broker-dealer · prooftrading.com | still up |
| 2021-06-01 | YCCoinrule Coinrule Automates Your Crypto and Stock Investments · coinrule.com | still up |
| 2009-06-01 | YCListia Mobile marketplace for trading used goods. · listia.com | still up |
| 2026-01-01 | YCInstinct Trade your instinct · instinct.xyz | still up |
| 2022-02-09 | stockmarketgame.net | still up |
| 2026-06-01 | YCArbital The social trading app for stocks, memes, and perps · arbital.xyz | still up |
| 2026-01-01 | YCValence Unified prediction markets trading platform · valence.trade | still up |
| 2024-09-01 | YCattimet Building the Prime Radiant · attimet.com | still up |
| 2026-06-01 | YCTovenAI AI agents for compliance at institutional trading firms · toven.ai | still up |
| 2026-06-01 | We are a multi-strategy trading firm that trains AI traders. · spectreintelligence.ai | still up |
| 2026-06-01 | Derivatives Exchange for Compute · getcomputable.com | still up |
| 2026-06-01 | Training the world's best AI model for quantitative finance. · prodigy.markets | still up |
| 2026-06-01 | YCEkpa Building Autonomous Research Agents for Trading · goekpa.com | still up |
| 2025-09-01 | YCBron TikTok for Sports Trading · askbron.ai | still up |
| 2025-01-01 | YCAxiom Trade memecoins, perpetuals, and earn yield. · axiom.trade | still up |
| 2026-01-01 | YCAxis An AI Copilot for Trading Desks · axisanalysis.com | still up |
| 2025-06-01 | YCLotas AI for quantitative trading · lotas.ai | still up |
| 2022-01-01 | YCAYC Fund AI-native crypto hedge fund · aycfund.com | still up |
How this compares
Y Combinator reports its own outcomes, including acquisitions. The other two are judged by asking the domain, so they are not measured the same way and are never averaged together.
The register re-probes every domain it holds. Some that answered last month stop answering. We send that list — what went quiet, and what it was — once a month. Nothing else.
How this was made. Show HN entries are every post from 2021 to 2023 with at least five points that linked to its own domain; code hosts and free hosting are excluded, because a repository outlives the effort behind it. Product Hunt entries needed 100 votes — a far higher bar, so they are the promoted top slice rather than a like-for-like sample. Both are judged by asking the domain whether it still answers: gone means it no longer resolves, refuses the connection, serves a parking page, or says plainly that it shut down. An HTTP error is not counted as gone — a server answering 404 is one somebody still pays for, and an audit of 25 gone-calls found two such sites alive with only a moved homepage. Y Combinator entries use the status YC publishes itself, which is why only those can say acquired. Squatted domains — a lapsed name now serving somebody else's site — are not detected, so these figures run slightly low.