Nil-Paid Rights: Trading Rights Before a Rights Issue Closes

In a rights issue, existing shareholders receive the right to buy new shares at a discounted price. Some shareholders do not wish to exercise this right; they can instead sell the nil-paid rights in the open market before the subscription period closes. The value of these tradeable rights depends on the gap between the discounted subscription price and the current market price.

How Nil-Paid Rights Arise

When a company launches a rights issue, it grants each shareholder the right to subscribe for new shares at a fixed price (the subscription price), usually at a discount to the current market price. For example, if ABC Inc. stock is trading at USD 10 and the company announces a rights issue offering new shares at USD 8 per share, each shareholder has a valuable right.

Initially, these rights are issued “nil-paid”—the shareholder pays nothing to receive them. The shareholder then faces a choice:

1. Exercise the right: Pay the subscription price (USD 8 per share) and receive the new shares.
2. Sell the rights: Offer them for sale in the market to another investor.
3. Do nothing: Let the rights expire at the end of the subscription period, forfeiting any value.

Most shareholders do one of the first two. A shareholder who lacks cash or believes the stock is overvalued will sell. A shareholder who wants more stock and has the funds will exercise.

Calculating Nil-Paid Rights Value

The value of a nil-paid right is determined by the spread between the market price of the underlying stock and the subscription price. The formula is:

Nil-Paid Rights Value (per right) = (Current Share Price − Subscription Price) / (1 + Number of New Shares per Existing Share)

The denominator accounts for dilution. If the company is issuing one new share for every two existing shares, the ratio is 1:2, and the denominator is 1 + 0.5 = 1.5.

Example:

• Current share price: USD 10
• Subscription price: USD 8
• Ratio: 1 new share for every 2 existing shares

Nil-Paid Rights Value = (USD 10 − USD 8) / (1 + 0.5) = USD 2 / 1.5 = USD 1.33 per right

A shareholder holding 100 existing shares would receive 50 rights (one-half of their shareholding). If they sell all 50 rights at USD 1.33 per right, they pocket USD 66.50. Alternatively, they could exercise all 50 rights by paying USD 8 × 50 = USD 400, receiving 50 new shares worth USD 500 at the current market price (a theoretical profit of USD 100, minus the cost of their USD 1.33-per-right sacrifice).

The math highlights a key insight: the shareholder is indifferent between exercising and selling, in theory, because the value creation is the same. In practice, transaction costs (trading commissions, bid-ask spreads) and liquidity (whether buyers exist for the rights at the calculated price) make the choice context-dependent.

Why Shareholders Sell Rather Than Exercise

A shareholder might sell nil-paid rights for several reasons:

Lack of liquidity: Even a shareholder convinced the stock will rise further may lack USD 400 in cash to exercise all 50 rights. Selling the rights raises cash without requiring capital outlay.

Belief that the stock is overvalued: If the shareholder thinks the current market price of USD 10 overstates the stock’s value, exercising at USD 8 and receiving USD 10-equivalent shares is still a poor choice. Better to sell the rights to optimistic buyers.

Portfolio rebalancing: A shareholder overweight in ABC Inc. may use the rights issue as an opportunity to reduce exposure, selling the rights instead of exercising and adding more shares.

Transaction costs and frictions: If nil-paid rights are illiquid and trading commissions are high, a shareholder might decide that selling yields less value than simply letting rights expire (a decision of last resort, since letting them expire yields zero).

Nil-Paid Rights in the Secondary Market

During the subscription period, nil-paid rights trade on the secondary market like any other security. The price fluctuates based on changes in the underlying stock price and the passage of time until expiration.

If ABC Inc.’s stock suddenly rises from USD 10 to USD 12, a nil-paid right with a USD 8 subscription price becomes more valuable. The new value is (USD 12 − USD 8) / 1.5 = USD 2.67 per right, a gain of 100% for a shareholder who bought rights at USD 1.33.

Conversely, if the stock falls to USD 9, the right’s value falls to (USD 9 − USD 8) / 1.5 = USD 0.67. A shareholder who held the rights hoping for a rally is now sitting on a loss.

The liquidity of nil-paid rights varies. Large, well-publicized rights issues (especially for major companies or indices) trade actively. Smaller companies or thinly-traded stocks may have wide bid-ask spreads, making it harder for sellers to execute at the theoretical price.

Adjusted Closing Prices and Ex-Rights Dates

When a rights issue is announced, the underlying stock’s price usually adjusts to reflect the dilution from the new shares. The ex-rights date is the first trading day on which the stock trades without rights attached; shareholders who buy the stock on or after that date do not receive rights.

This adjustment is automatic and built into market prices. The quoted “current price” of the stock during the subscription period already reflects the value destruction from dilution, so the nil-paid rights formula yields a market-consistent value.

However, complications arise if the stock rallies or falls sharply during the subscription period. The theoretical value of rights is reset continuously, but a shareholder’s decision to sell or hold is rarely purely mathematical. Sentiment, volatility, and liquidity constraints matter.

Rights Not Exercised: Lapse and Re-Entry

When the subscription period closes, any nil-paid rights not exercised or sold lapse and become worthless. A shareholder who forgets the deadline loses the value entirely. Responsible brokers send reminders, and the company often extends the final deadline, but negligence can be costly.

Some companies allow a brief period after the rights expire for shareholders to apply for “unexercised rights”—shares that were not taken up by other shareholders. This is not a second chance to buy at the discounted subscription price but rather a chance to buy unsold shares at the prevailing market price, which is often higher than the subscription price by then. It is a poor substitute for exercising on time.

Tax and Corporate Action Considerations

From a tax perspective, selling nil-paid rights can trigger capital gains or losses depending on the shareholder’s cost basis. The cost basis of the rights is typically zero (since they were received free), so the sale price is entirely a gain (subject to long-term capital gain or short-term treatment based on holding period).

Exercising rights and receiving shares establishes a cost basis of the subscription price (USD 8 per share in the example) for those shares. If the shareholder later sells the shares, gains are calculated from that basis. This tax difference can influence the choice between selling rights and exercising.

Additionally, some corporate actions (dividends, stock splits, spin-offs) occur during the subscription period and adjust the number of rights or subscription prices accordingly. Shareholders should monitor announcements to ensure their trading decisions account for these adjustments.

See also