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Market Data Feeds Real-Time

⬢ NIVÅ 2Tekniskt
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5 månader
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Real-time market data integration ingests live price quotes, trade executions, and order book snapshots from stock exchanges, crypto exchanges, and brokers. You handle: protocol complexity (FIX, WebSocket, proprietary), data normalization, latency (sub-millisecond matters for trading), and correctness (missing tick = bad trade decision). Mastery takes 10-14 weeks. Specialists earn 30-50% premium because latency = money, algorithms operating on 10ms-old data may miss or overtrade. The skill sits at the intersection of finance, systems engineering, and networking.

Vad är Market Data Feeds Real-Time

Real-time market data integration is the practice of consuming live financial data from exchanges, normalizing it, and distributing it to trading systems, analytics platforms, and monitoring dashboards. Sources: stock exchanges (NYSE, NASDAQ), crypto exchanges (Binance, Coinbase), forex brokers, commodity exchanges. Data: bid/ask prices, trade executions, order book snapshots, volumes. The challenge: handling multiple data formats (FIX, WebSocket, REST), ensuring message ordering, handling outages, and minimizing latency. A 10ms delay in data can mean millions of dollars in lost opportunities for high-frequency traders.

🔧 VERKTYG & EKOSYSTEM
FIX protocol (Financial Information eXchange)WebSocket APIs (crypto exchanges, brokers)Market data providers (Bloomberg, Reuters, IEX, Polygon)C++ (for low-latency systems)Rust (for modern systems)Message serialization (Protocol Buffers, FlatBuffers)Real-time monitoring (Grafana, custom dashboards)

💰 Lön per region

OmrådeNybörjareMidErfaren
USA$150k$250k$400k
UK£100k£170k£280k
EU€110k€180k€300k
CANADAC$140kC$230kC$380k

❓ Vanliga frågor

What's the difference between real-time and near-real-time market data?
Real-time: live feeds with <10ms latency. Used for high-frequency trading (HFT) and market-making. Near-real-time: 1-5s delay. Acceptable for retail trading, risk management. The faster you need, the more infrastructure complexity and cost.
What's the FIX protocol, and why is it important?
FIX (Financial Information eXchange) is a standard protocol for exchanging financial data. Most institutional brokers support FIX for orders and market data. FIX is verbose (older, text-based), but ubiquitous. Crypto and modern brokers often use REST/WebSocket instead.
How do I handle trade confirmation and order book updates?
Order book is a snapshot: list of buy/sell orders at each price. Trades are individual executions. When a trade happens, the order book updates. You need both to understand market state. Messages must be processed in order; out-of-order processing leads to incorrect book and bad decisions.
What if I miss a market data message?
You've got stale data and make decisions based on old prices. Solutions: heartbeat checks (detect missing messages), request retransmission from exchange, maintain local 'last known good' state and gaps. High-frequency traders spend engineering effort to catch every tick.
How do I normalize data from multiple exchanges?
Each exchange has different schema: stock symbols, lot sizes, trading hours. Build an abstraction layer: normalize to a canonical schema, map symbols, handle timezone differences. Use a data transformer service between sources and consumers.

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