About a month ago, I was optimizing a gold trading analytics program. The gold spot real-time API itself was fast enough, but my backtesting and indicator modules kept re-downloading the same historical K-lines. I pulled some logs and found that one request for a year of 1-minute gold bars too

We are a small group of independent high-frequency traders who live and breathe order book data. For a long time, we had a nagging suspicion that something was off with our local market depth, even though our cryptocurrency real-time API connection seemed to be delivering every tick. It took us week

Hey traders, I've been getting a lot of DMs asking about my data setup. We all know the pain: you see a price on the chart, your bot fires an order, and you get filled 10 cents worse. Slippage is the silent killer of profitability. The truth? It's likely your data feed. If you aren't using WebSocket

Hey traders, I've been getting a lot of DMs asking about my data setup. We all know the pain: you see a price on the chart, your bot fires an order, and you get filled 10 cents worse. Slippage is the silent killer of profitability. The truth? It's likely your data feed. If you aren't using WebSocket

Hey Traders, Let's talk about something frustration: Slippage. You know the feeling. You see a breakout on Apple (AAPL). You hit buy. And bam—you get filled 10 cents higher than you wanted. You start the trade in a loss. I used to think my broker was scamming me. I used to think the market was rigge

Hey community, I want to share a quick case study from my recent trading setup. I run a gap-arbitrage bot. For a long time, backtests showed +15%, but my live account was down -8%. I thought the broker was cheating me. Turns out, I was just too slow. The Discovery I realized that 80% of arb opportun

In the world of fintech, data is the new oil. But if your oil is contaminated, your engine will seize. Many startups begin their journey relying on free data sources to bootstrap their MVP (Minimum Viable Product). While cost-effective initially, this creates a "technical debt" that accumulates inte

The modern trader doesn't stick to one asset class. Hedge funds today might hedge a Long position in Apple (AAPL) with a Short position in Gold (XAUUSD), while dabbling in Bitcoin. For a developer, this is a nightmare. Stock exchanges use FIX protocol. Crypto exchanges use WebSockets. Forex brokers

The Foundation of Algo-Trading Before you can automate a strategy on FollowMe or any other platform, you need a reliable data feed. Visual charts are great for humans, but your algorithms need raw numbers—JSON data delivered via HTTP. The "Query" Challenge Advanced APIs often require you to send spe

I’ll never forget the afternoon my cross-exchange arbitrage bot went haywire. On paper, my backtests showed a beautiful, upward-sloping equity curve. In live trading, it was a bloodbath. I spent two agonizing days combing through my code, convinced I had a logic error. The real culprit? The two "fre

Let’s look at the hard data first. According to internal reports from major Wall Street prime brokers, algorithmic trading now accounts for over 80% of volume in equities and an even higher percentage in the crypto derivatives market. This statistic tells a brutal truth: if you are still relying on

In our advanced finance lectures, we often discuss the concept of "Alpha Decay." Strategies that worked yesterday fail today. Why? Because the market is becoming more efficient. The edge for professional traders no longer lies solely in complex mathematical formulas, but in the raw material fed into

Imagine this: you're trying to map the ripple effect of a Federal Reserve decision across your portfolio of Hong Kong tech stocks, while also factoring in the RMB's exchange rate. Your intuition and macro understanding are sharp, but the moment you try to validate this cross-market hypothesis with d

Have you ever been in this situation? You've built a logically perfect financial model, the backtests show a beautiful upward curve, but the moment you apply it to live market data, the conclusions are nonsensical. It's a confidence killer. Before you blame your own logic, let me share something I'v

In every investment group, there’s always one or two "spreadsheet gurus" revered as "Brother/Sister Excel." They’re obsessed with managing their portfolios using Excel or Google Sheets. Their spreadsheets are exquisitely crafted: featuring position costs, real-time market values, profit/loss ratios,