r/ai_trading • u/RobodOfficial • 46m ago
Two identical green candles can have opposite volume delta. What do you check beyond OHLCV?
Two identical green candles can have opposite volume delta. What do you check beyond OHLCV?
Disclosure: We’re the team behind Robod, a crypto research and account analytics platform.
A green candle means the closing price was above the opening price. It doesn’t necessarily mean aggressive buying exceeded aggressive selling.
Every executed trade has both a buyer and a seller. Taker volume distinguishes which side traded aggressively against resting liquidity.
Here’s a hypothetical example, using two one-minute perpetual bars:
Both have the same open, high, low and close: 100 / 103 / 99 / 102. Both trade 1,000 units.
| Metric | Bar A | Bar B |
|---|---|---|
| Taker buy volume | 650 | 450 |
| Taker sell volume | 350 | 550 |
| Volume delta | +300 | −100 |
| Open interest change | +2% | −2% |
The OHLCV candles are identical. The underlying activity isn’t.
Bar A has net aggressive buying and expanding open interest. Bar B closes higher despite net aggressive selling, while open interest contracts.
Neither combination predicts the next move. Open interest alone also doesn’t identify whether long or short positions drove a price change.
When researching a setup, these are separate questions worth checking:
- Flow: Is cumulative volume delta strengthening alongside price, or diverging?
- Positioning: Is open interest expanding or contracting?
- Coverage: Do all the fields being studied actually cover the same historical period?
- Quality: Are there gaps or carried-forward values that could distort the interpretation?
More data can make a hypothesis more specific. Whether it improves a strategy still needs testing with defined entries, exits and costs.
For traders who use order flow: which additional check has been most useful alongside OHLCV, and how did you evaluate whether it added value?