If you check OpenRate twice a day, you'll see spreads compress from 0.4% to 0.7% and back. The drivers are knowable; reading them helps you decide whether to wait or trade now.
Volatility shock
USDINR moves >50 bps in an hour, or BTC drops 5%, and merchants pull ads to re-price. The order book thins and spreads widen 50-100 bps until merchants come back with re-quoted ads.
Inventory imbalance
If 80% of takers are on the buy side, sell-side ads get hit faster than they're replenished. Sellers raise their price; buyers see a wider spread for 5-30 minutes until ads refill.
Bank-side AML pressure
Periodic news of account freezes (e.g., a major bank cracking down) makes merchants risk-off — they widen spreads to compensate for the higher probability they'll have to absorb a frozen UPI receivable.
End of trading day
Around 11 PM-12 AM IST as merchants reduce inventory exposure overnight, sell-side spreads widen.
Key takeaways
- Volatility shock = order book thins for 5-30 minutes.
- Inventory imbalance = directional widening on the over-demanded side.
- Bank-AML news = generalised widening as merchants risk-off.
- End-of-day widening as merchants pull inventory.
