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Advanced Option Lessons

A hands-on options curriculum covering real trading concepts. Read the lessons, work through examples, and test your knowledge.

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Bid-Ask Spread
Module 19: Global Arbitrage & Event-Driven TradingAdvanced 20 Min

Lesson 1: 19.1: Merger & Risk Arbitrage (M&A Deal Structures & Break Spreads)

Master M&A deal structures, cash vs stock offers, break spread calculations, regulatory approval risks, and deal probability modeling.

1. M&A Deal Structure & Spread Capture

When a company announces an acquisition, the target company stock typically trades at a discount (deal spread) to the proposed offer price.

• Cash Deals: Arbitrageur buys target stock at $95, expecting $100 cash upon deal closure.

• Stock-for-Stock Deals: Arbitrageur buys target stock and shorts acquirer stock in the exact exchange ratio to lock in the spread.

★ Deal Break Risk: If antitrust regulators (FTC/DOJ) block the deal, the spread explodes and target stock crashes back to standalone valuation.

2. Quantifying Implied Deal Probability

Implied Probability = (P_current - P_standalone) / (P_offer - P_standalone). Quant desks continuously update deal probabilities based on regulatory filings and legal analysis.

A cash merger example with a $95 target price and a $100 offer, branching into the deal closing for a $5 gross spread or the deal breaking
A cash deal example: the target trades at $95 and the offer is $100. If the deal closes, the gross spread is 100 − 95 = $5, or 5 ÷ 95 ≈ 5.26%, before costs and time. If the deal breaks, the target's value is unknown, so no probability is calculated, and the break risk is shown as its own branch rather than a second certain outcome.
Interactive Option Simulation Lab

Options Structure Exploration

LAB SIMULATOR ACTIVE

Options are contracts cleared in the bid-ask auction market. Interact with the Order Book below to understand how buy offers (bids) and sell offers (asks) intersect, and inspect the structural breakdown between Call and Put contracts.

Limit Order Book & Spread Interface
SELLERS (ASK)$2.1523 Contracts
$2.12 | 15 Contracts
BID-ASK SPREAD: $0.10
Mid-Price: $2.10
$2.08 | 41 Contracts
BUYERS (BID)$2.0554 Contracts

Hover over ASK or BID to dissect the auction market dynamics.

CALL OPTION
Right to Buy
  • Outlook: Bullish (Goes up)
  • Risk: Capped to premium paid
  • Profit: Scales as stock surges
Delta: Positive (0.00 to +1.00)
PUT OPTION
Right to Sell
  • Outlook: Bearish (Goes down)
  • Risk: Capped to premium paid
  • Profit: Scales as stock falls
Delta: Negative (0.00 to -1.00)

KNOWLEDGE RECONNAISSANCE

Q01.

How does a merger arbitrageur structure a trade in a fixed-ratio stock-for-stock acquisition?

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Signal Desk is where you practice this on real stocks: real option chains (about 15 minutes delayed), the Trade Check and a paper-trading account that risks no real money. Join to add it, your progress tracking and PDF downloads.

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