📚 Stock Market Glossary
Clear, beginner-friendly explanations, real-world analogies, and visual formulas for key stock market terminology.
Sidecar
Trading & Market💡 Key Takeaway: A trading curb that temporarily suspends program trading orders for 5 minutes when stock index futures fluctuate violently.
Motorcycle Sidecar Analogy: When a speeding motorcycle (futures market) swerves dangerously, the sidecar attachment applies a gentle 5-minute brake to stabilize control.
😎 10-Second Show-off Pro Tip for Friends!
😎 Show-off Tip: Say, 'Sidecar isn't a full trading shutdown! It merely pauses high-frequency program algorithm trading for 5 minutes to restore order books.'
📖 Beginner-Friendly Explanation
STEP 1
Core Concept & Meaning
Sidecar is a trading curb designed to dampen excessive market volatility driven by automated computer algorithms.
STEP 2
Why It Matters & Mechanism
When index futures fluctuate by 5% (KOSPI) or 6% (KOSDAQ) for over 1 minute, Sidecar suspends program trading orders for exactly 5 minutes.
STEP 3
Practical Investment Tips & Pitfalls
Unlike Circuit Breakers which freeze the entire exchange, Sidecars only pause automated program trading, allowing manual human orders to proceed normally.
📊 Summary of sidecar activation criteria
KOSPI futures fluctuate more than 5% OR KOSDAQ futures fluctuate more than 6% ➔ Program trading halted for 5 minutes
▶ Activates only once a day, and cannot be activated after 40 minutes before market closing (14:50)
⚖️ Key Comparison at a Glance
| Category | Sidecar | Circuit Breaker |
|---|---|---|
| Trigger signal criteria | Futures market price surges/drops by 5-6% | Spot comprehensive stock index plunges 8%, 15%, 20% |
| Restricted Transactions | Only computer program trading quotations are suspended | All stock/bond trading suspended (complete shutdown) |
| Stop time | Automatic release after just 5 minutes of grace | 20 minute forced cooldown |
⚔️ Don't Mix These Up! (Head-to-Head Comparison)
VSCircuit Breaker
View Circuit→💡 Crucial Difference: Sidecar temporarily cools program trades (5 min pause), while Circuit Breaker halts all trading nationwide for 20 mins during severe market crashes.
📌 Practical Market & Real-World Example
A violent short-covering market surge triggered a buy-side Sidecar, pausing program buy orders for 5 minutes.