Rithmic
A market data and execution infrastructure provider behind most US futures brokers and prop firms — powers R|Trader Pro plus the back end of NinjaTrader, Sierra Chart, and similar platforms.
What is Rithmic?
Rithmic is a market data and execution infrastructure provider that sits behind most US futures brokers and prop firms. Rather than a consumer-facing platform, Rithmic provides the data feeds, order routing, and execution APIs that power retail platforms like NinjaTrader, Sierra Chart, MotiveWave, and many proprietary firm-specific platforms. Apex Trader Funding, Take Profit Trader, and most major futures prop firms use Rithmic as the default data feed.
Rithmic also offers its own native trading platform, R|Trader Pro — a minimal Windows-based platform with order ticket, DOM, and basic charting. Some traders use R|Trader Pro directly for execution while charting on TradingView or similar; others route everything through NinjaTrader (which uses Rithmic data internally).
The technical advantage of Rithmic for prop firm traders is server-side execution. Stop orders, OCO brackets, and bracket orders submitted via Rithmic rest at the exchange or at Rithmic’s infrastructure level — they trigger correctly even if your local platform crashes or your internet drops. This is the most reliable protective-stop architecture available to retail futures traders.
How Rithmic works
How Rithmic fits into the prop firm stack:
- Trader’s chart/order platform (NinjaTrader, R|Trader Pro, Sierra Chart) connects to Rithmic via API.
- Rithmic forwards order to CME (or clearing firm) for execution.
- Rithmic forwards live market data back to the trader’s platform.
- Rithmic provides the simulation environment for simulated funded accounts at most prop firms.
Rithmic platforms used at prop firms (May 2026):
- R|Trader Pro: Native Rithmic platform. Windows-only. Minimal but very stable. Free with most prop firm accounts.
- NinjaTrader 8: Connects to Rithmic. Most popular full-featured charting platform among prop firm traders.
- Sierra Chart: Connects to Rithmic. Heavy charting and replay features. Popular among order-flow traders.
- MotiveWave: Connects to Rithmic. Elliott Wave and harmonic-pattern focused.
- Quantower: Connects to Rithmic. Modern UI, multi-asset support.
Cost structure:
- Exchange + clearing fees: $1.18 per side on E-minis (E-mini ES, NQ), lower on micros (~$0.37 per side).
- Rithmic platform fee: $0-$30/month depending on broker tier and platform.
- Total round-trip on E-mini through Rithmic: typically $2.50-$5.00 depending on platform tier.
Reliability features: Rithmic operates from multiple data centers with failover. Outages are rare; most traders go years without experiencing a Rithmic-side disconnection. Server-side stop orders and brackets remain active during local platform crashes.
Worked example
Setup: Trader on Apex $50K Performance Account, using NinjaTrader 8 connected to Rithmic for execution.
Order placement scenario:
- Trader submits BUY 1 NQ MKT through NinjaTrader.
- NinjaTrader sends order to Rithmic via API.
- Rithmic submits to CME’s matching engine.
- Fill confirmation flows back: Rithmic → NinjaTrader → trader’s screen.
- Total latency: ~50-100ms typical (slower than collocated execution but well within retail expectations).
Stop-loss behavior:
- Trader places SELL STOP 1 NQ via NinjaTrader’s STP-MKT order type.
- Order rests at Rithmic’s server-side infrastructure (not just on the local NinjaTrader instance).
- If the trader’s laptop crashes or internet drops, the stop continues to monitor price at Rithmic’s servers.
- When price triggers, Rithmic submits the stop conversion to CME automatically.
- Trader returns to a flat account (or filled stop result) when re-connecting.
Cost on this trade: Round-trip on NQ through Rithmic (NinjaTrader Lifetime tier): $0.59 platform per side + $1.18 exchange/clearing per side = ~$3.54 per round-trip. On a $200 winner, net is $196.46.
Rithmic vs related concepts
Side-by-side comparison of Rithmic against the most commonly confused alternatives.
| Concept | Definition | Category |
|---|---|---|
| Rithmic this term | A market data and execution infrastructure provider behind most US futures brokers and prop firms — powers R|Trader Pro plus the back end of NinjaTrader, Sierra Chart, and similar platforms. | Trading Platforms |
| Tradovate | A web and mobile-native futures brokerage and trading platform with simple flat-fee pricing — popular with prop firm traders for its mobile app, server-side bracket orders, and absence of platform-license fees. | Trading Platforms |
| NinjaTrader | The most popular full-featured futures trading platform among US prop firm traders — Windows-native (Mac via Parallels/Wine), free for charting and demo, paid tiers for live trading. | Trading Platforms |
| CQG | A premium futures market data and execution provider used primarily by professional and institutional traders — alternative to Rithmic with similar reliability but more expensive and complex. | Trading Platforms |
| Data Feed | The real-time stream of market prices, bid/ask quotes, and trade ticks delivered to a trading platform from the exchange via providers like Rithmic, CQG, or Tradovate. | Trading Platforms |
How major prop firms handle Rithmic
Every firm implements rithmic differently. Here's the firm-by-firm breakdown — DGT-trusted firms surface first, with implementation notes for each.
| Firm | How they handle it | Rating |
|---|---|---|
| Apex Trader Funding DGT TRUSTED | Rithmic is the default data and execution layer at Apex. NinjaTrader and R|Trader Pro both connect through Rithmic. Standard $1.18/side exchange + clearing fees apply. | |
| Take Profit Trader DGT TRUSTED | TPT supports Rithmic via NinjaTrader and Tradovate platforms. Standard exchange fees apply. Rithmic-routed orders benefit from server-side stop reliability. | |
| Tradeify DGT TRUSTED | Tradeify uses ProjectX-based platforms (TradingView, ATAS, Quantower, NinjaTrader) — most route through Rithmic data layer for CME products. | |
| Lucid Trading DGT TRUSTED | Lucid uses ProjectX with Rithmic backing for CME futures execution. Server-side stops and OCO brackets fully supported. | |
| FundedNext DGT TRUSTED | FundedNext supports Rithmic-connected platforms (NinjaTrader, Tradovate). Standard CME exchange fees pass through. | |
| Phidias Prop Firm DGT TRUSTED | Phidias uses Rithmic-backed execution for algo traders. Server-side execution is critical for unattended automated strategies; Rithmic's reliability is a major Phidias advantage. |
Why traders fail Rithmic
Confusing Rithmic with NinjaTrader. NinjaTrader is the platform; Rithmic is the data/execution layer behind it. Trading through NinjaTrader on Apex IS trading through Rithmic. Some traders treat them as alternatives when they’re actually a stack.
Choosing R|Trader Pro for charting. R|Trader Pro is excellent for execution and order management but limited as a charting platform. Use NinjaTrader, Sierra Chart, or TradingView for charts; route execution through Rithmic regardless.
Forgetting Rithmic platform fees. Some prop firms charge a Rithmic platform fee separately from the eval/activation fee. Apex includes Rithmic in standard accounts; some other firms charge $10-$30/month. Verify per firm before assuming free Rithmic access.
Using client-side stops on Rithmic-connected platforms. Rithmic supports server-side stops natively; some custom indicators or external automation tools force client-side stop logic. Always use the platform’s default STP-MKT or STP-LMT order types to ensure server-side handling.