For stock market investors, navigating a rights issue (or rights offering) is one of the more complex portfolio management tasks. Unlike bonus shares or stock splits where you passively receive shares for free, a rights issue requires you to make a financial decision: you must pay additional cash to buy new shares and maintain your proportional ownership in the company.
How much will it cost to participate? How will the new shares affect the overall stock price? In this article, we will explain the mathematics behind rights offerings and how to calculate your out-of-pocket costs and the new theoretical price. You can bypass the manual math by using our Capital and Dividend Calculator.
What is a Rights Issue?
A rights issue is an invitation to existing shareholders to purchase additional new shares in the company. This invitation gives existing shareholders the "right" to buy these shares at a discounted price (the subscription or exercise price) before they are offered to the general public.
Companies typically utilize rights issues to raise fresh capital—whether to pay down debt, fund an acquisition, or strengthen their balance sheet in times of financial distress.
As a shareholder, you usually have three options:
- Exercise your rights: Pay the required cash to buy the new shares.
- Sell your rights: Sell your subscription rights to another investor on the open market.
- Do nothing: Let the rights expire, which will result in the dilution of your ownership and a loss of portfolio value.
Calculating the Costs of a Rights Issue
To determine how much cash you need to participate, you need three pieces of information provided by the company:
- Your Current Shares: The number of shares you currently hold.
- The Rights Issue Rate: The ratio or percentage of new shares offered (e.g., a 25% rights issue means you can buy 1 new share for every 4 you own).
- The Exercise Price (Subscription Price): The discounted price at which you can buy the new shares.
1. Calculating the Number of Rights Shares
First, find out how many new shares you are entitled to buy:
Rights Shares = Current Shares × (Rights Rate / 100)
2. Calculating the Total Payment Required
Once you know the number of new shares, multiply it by the exercise price to find your total cost:
Rights Payment = Rights Shares × Exercise Price
Case Study: Calculating Your Payment
Let's assume you own 1,000 shares of "Alpha Industries". The stock is currently trading at $50.00 per share. Alpha announces a 20% rights issue with a discounted Exercise Price of $40.00 per share.
Step 1: Calculate the New Shares
- Current Shares: 1,000
- Rights Rate: 20%
- Rights Shares Entitlement:
1,000 × (20 / 100) = 200new shares.
Step 2: Calculate the Cash Required
- New Shares: 200
- Exercise Price: $40.00
- Total Payment:
200 shares × $40.00 = $8,000
To participate fully, you must instruct your broker and have $8,000 in cash available in your account. After the transaction, you will own a total of 1,200 shares (1,000 old + 200 new).
Calculating the Theoretical Ex-Rights Price (TERP)
Because the company is issuing new shares at a discount to the current market price, the overall value of the stock will drop on the ex-rights date. This mathematically adjusted price is known as the Theoretical Ex-Rights Price (TERP).
The formula for TERP blends the value of the old shares with the cash raised from the new shares:
TERP = [ (Current Shares × Closing Price) + (Rights Shares × Exercise Price) ] / New Total Shares
Let's apply this formula to our Alpha Industries example:
- Value of Old Shares:
1,000 shares × $50.00 = $50,000 - Cash Raised from New Shares:
200 shares × $40.00 = $8,000 - Total Portfolio Value Post-Issue:
$58,000 - New Total Shares:
1,200 - TERP:
$58,000 / 1,200 = $48.33
When the market opens on the ex-rights date, the stock's reference price will be adjusted downward from $50.00 to roughly $48.33.
Why Doing Nothing is a Mistake
If you hold 1,000 shares of Alpha and simply ignore the rights issue:
- Before the issue, your shares were worth $50,000.
- After the issue, the market price adjusts to the TERP of $48.33.
- Your 1,000 shares are now worth $48,330.
- You have essentially lost $1,670 in value due to dilution.
This is why you must either exercise your rights (by paying the $8,000) or sell your rights on the open market to compensate for the drop in the share price.
Calculating TERP and capital requirements can be daunting. To simulate your exact costs and adjusted prices instantly, use our free Capital and Dividend Calculator.
Disclaimer: The information provided in this article is for educational purposes only and does not constitute financial advice. Always consult official company filings and your brokerage for precise corporate action details.
