There’s a compressed version of the ProjectX story that fits in one sentence: the platform went from industry-wide infrastructure to one firm’s exclusive property in under two years. But that sentence leaves out everything that made the story worth telling, and worth understanding if you’re a futures trader deciding where to set up right now.
So let’s back up.
From Sims2Funded to ProjectX
ProjectX started life as Sims2Funded, a company providing backend technology and support to futures prop firms. The rebrand hit in August 2024 alongside a pointed announcement: six additional prop firms would be launching on the platform within 45 days, with retail trading access coming shortly after.
That timeline tells you something about the ambition here. This wasn’t a slow pivot. The goal was clearly to become the infrastructure layer for futures prop trading broadly, not just one firm’s backend.
It worked, for a while. One Top Futures, Trading Lucid, Tradify, Blue Guardian Futures, and Tick Tok Trader were among the firms running on ProjectX. The list kept growing. The platform was spreading through the futures prop ecosystem at a pace that made it look, briefly, like it would define how traders interacted with prop firms entirely.
What the Platform Actually Did Well
The core product was genuinely well thought out. ProjectX combined high-quality market data with modern charting tools, a trader-friendly web interface, mobile access, and native risk controls. The TradingView integration was arguably the smartest individual decision in the whole build. Prop firm platforms have historically required traders to abandon the charting setups they already knew. ProjectX didn’t ask for that trade-off.
On the data side, the platform operated as a licensed CME data redistributor, offering unfiltered depth of market data hundreds of levels deep at millisecond update intervals. For traders doing order flow work on ES or NQ, that’s a meaningfully better data environment than most retail platforms provide.
The risk tooling is what prop firms actually cared about. Max daily loss limits, profit-target lockouts, automatic liquidation, and manual lockout controls were all built natively into the platform, not delegated to a third party or left to broker enforcement. For a prop firm trying to protect its capital from traders chasing losses on a bad NQ session, native risk enforcement is a real operational advantage. (If you want to understand how trailing drawdown mechanics work in practice, the rules vary considerably more between firms than most traders expect before they get caught by one.)
The REST API capped it off. Firms could manage user accounts, enforce risk rules, and trigger platform actions programmatically, which meant smaller operations could launch evaluation programs without building their own tech stack from zero.
TopstepX and the Exclusive Deal
Topstep was the first commercial partnership built on ProjectX’s flagship product, and the resulting platform, TopstepX, launched with several proprietary features layered on top of the ProjectX core (source). The most distinctive was The Tilt, a sentiment indicator that aggregates positioning across all traders on the platform to show whether the majority is leaning long or short on a given instrument. Whether you treat that as a useful contrarian signal or ignore it entirely, you couldn’t get it anywhere else.
Trader adoption was significant. Over 82% of recently registered Topstep traders chose TopstepX, and pass rates on the platform ran roughly 86% higher than on legacy platforms, based on data from January through June 2025. Starting August 1st, 2025, all new Trading Combines and Resets at Topstep moved to TopstepX exclusively. Legacy platforms like Tradovate and NinjaTrader remained available for active funded accounts, but new evaluations were TopstepX only.
The direction was clear well before the formal announcement came.
The November 2025 Decision
In late November 2025, ProjectX notified third-party prop firms that it would revoke licensing and end support for all firms except Topstep, effective February 2026. Firms that had built their entire prop firm challenge infrastructure around ProjectX suddenly had a hard deadline and a migration problem on their hands.
The official explanation cited shifts in operational demands alongside upcoming compliance reporting, oversight, and audit requirements. The community reaction ranged from frustration to outrage. Firms that had built their entire challenge infrastructure on ProjectX had a hard migration deadline and no say in it. Traders who had chosen specific prop firms because they offered ProjectX had no path to continue on the platform other than switching to Topstep.
Unofficially, the broader industry read this as a strategic exclusivity arrangement. Whether that’s accurate or not, the practical effect was the same: a platform that had been positioning itself as neutral industry infrastructure became a proprietary asset overnight.
That’s what made the announcement land hard. ProjectX had a strong technical reputation. The issue wasn’t the product. It was the business decision.
What ProjectX Is Today
Today, ProjectX is TopstepX. Full stop. If you want access to the platform as a trader, the only path is through topstep.com/topstepx.
The core capabilities are still there: direct CME market data with 50ms updates, native auto-liquidation and trailing loss limits, browser-based access with no installation required, and The Tilt sentiment indicator exclusive to the platform. Copy trading is built in natively as well.
The growing pains are also well documented. Reports from traders during the migration period describe ghost orders, chart lag, and fill errors. For scalpers working ES during the open, those aren’t theoretical concerns. There’s a structural issue worth naming directly: when the prop firm you trade with owns the only platform you’re permitted to use, you lose optionality. With Rithmic or Tradovate, a connectivity problem lets you route around it. With TopstepX, there’s no alternative to reach for.
Reports from late 2025 suggest stability has improved meaningfully compared to the initial migration period. It’s getting better. Whether it’s improved enough depends on your trading style and your tolerance for the model itself.
The Practical Decision
ProjectX built something that genuinely worked and that traders genuinely preferred. The TradingView integration removed a real friction point. The data infrastructure was competitive. The risk tooling gave prop firms something they actually needed. It was a well-executed product.
The question for futures traders today isn’t whether the platform was good. It clearly was. The question is whether you’re comfortable with the current arrangement: one firm, one platform, no alternatives within the ecosystem.
If the ProjectX experience is what you’re after, Topstep is the only place to get it. Topstep has a long track record in the futures prop space, so the firm itself isn’t the concern. The concern is concentration and optionality, and that’s a judgment call you have to make for yourself.
If you’d rather keep your platform and prop firm choices separate, Rithmic-based setups through NinjaTrader or Quantower give you that flexibility. Tradovate is another option if you want something browser-native without the single-firm dependency.
The full best futures prop firms list is worth checking if you’re still working through which firm to pair with whatever platform you land on. And if you’re starting a Topstep evaluation, it’s worth looking at current trading offers before paying full retail price on the combine.