Timing convenience — Ek salaried person raat 10 baje news dekhta hai, kharidne ka faisla karta hai, lekin agli subah 9:15 AM par nahi baith sakta. AMO unhe decision pre-load karne deta hai.
After-hours events par react karna — Quarterly results, global market moves, aur corporate announcements aksar 3:30 PM ke baad aate hain. AMO tumhe open se pehle position lene deta hai.
Opening rush se bachna — 9:15 par manually race karne ki jagah, tumhara order already broker ki queue mein baitha hota hai.
Chaliye mechanism ko step by step build karte hain — koi memorising nahi, sirf reasoning.
Step 1 — Exchange ek matching engine hai jo sirf session hours ke dauran chalta hai.Kyun? Ek buy aur sell ko match karne ke liye dono sides ka live hona zaroori hai. Hours ke bahar koi order book nahi hai jo nayi entries accept kare, isliye kuch match nahi ho sakta.
Step 2 — Toh tumhara order raat bhar kaun hold karta hai?
Exchange nahi (woh band hai) → isliye broker ko ise apne system mein store karna hoga. Yahi key insight hai: ek AMO release time tak exchange par nahi, broker ke server par rehta hai.
Step 3 — Ise kab release kiya jaata hai?
Broker ise pre-open session ke dauran ya market open par submit karta hai. India mein equity pre-open 9:00–9:15 AM hoti hai; kaafi brokers AMOs ek window mein push karte hain (jaise, pichle din ~3:45 PM se ~8:57 AM tak AMOs accept karte hain).
Step 4 — Kaunsi price milti hai?
Kyunki yeh live book mein sirf open par enter karta hai, yeh baaki sabke fresh orders ke saath compete karta hai. Isliye:
Market AMO → prevailing open-side price par fill hota hai (opening auction ke subject to).
Limit AMO → sirf tab fill hota hai jab market tumhari specified limit tak pahunche.
broker dwara storePlace AMO (post-close)⟶overnightBroker queue⟶exchange ko bhejaPre-open / Open⟶Agli session price par Execute
Khud ko protect karna: limit L par ek limit buy AMO sirf tab fill hota hai agar Popen≤L ho. Tumhara worst-case cost tab capped ho jaata hai:
costmax=L(fills nothing if Popen>L)
Recall Feynman: ek 12-saal ke bachche ko explain karo
Socho ek ice-cream shop jo sirf 9 AM par khulti hai. Tum raat ko aate ho jab woh band hoti hai, lekin tum darwaaze ke neeche ek note slip karte ho: "Please khulte hi mujhe ek chocolate scoop do." Shopkeeper tumhara note rakh leta hai. Subah woh tumhe pehle serve karta hai — lekin subah ki price par, raat wali price par nahi. Agar chocolate raat bhar mein mehungi ho gayi, tum nayi price pay karte ho. Woh note ek AMO hai: advance mein di gayi request, opening time par fulfill hoti hai, opening prices par.
Ek aisa order jo market hours ke bahar place kiya jaata hai jise broker store karta hai aur agli session ke open par exchange ko submit karta hai.
AMO raat bhar physically kahaan rehta hai — exchange par ya broker ke paas?
Broker ke server par; exchange band hai aur use hold nahi kar sakta.
AMO kis price par execute hota hai?
Agli session ki opening/prevailing price par, na ki us price par jab use place kiya gaya tha.
Broker AMO ko exchange ko kab release karta hai?
Pre-open session (India mein 9:00–9:15 AM) ke dauran ya market open par.
Overnight gap-up ke saath market buy AMO: price gap kaun bear karta hai?
Trader — full slippage S=Popen−Pplace.
AMO par risk kaise cap karte hain?
Limit AMO use karo; yeh sirf tumhari limit price ya better par fill hota hai, worst-case cost cap kar ke.
AMO raat ko execute kyun nahi ho sakta?
Matching ke liye buyer aur seller dono ka live hona zaroori hai; hours ke bahar order book accept/match nahi kar raha, isliye koi counterparty nahi hoti.
Limit AMO vs market AMO ka trade-off kya hai?
Limit price protection deta hai lekin fill nahi hone ka risk hota hai; market fill guarantee karta hai lekin koi price protection nahi.
Sell AMO ke liye, kya negative overnight gap help karta hai ya hurt?
Yeh hurt karta hai — tum apne reference se lower open price par bechte ho.
