📚 PASS Investment Adviser (Level 1) Difficulty: Beginner ℹ️ Info   ~5 min read
📌 Chapter 10.2 — Underlying concepts in derivatives

Imagine you are reviewing your portfolio as the third Thursday of the month approaches—the standard expiry date for stock derivatives in India. You notice a client’s holding in a mid-cap company has a high volume of open interest in deep-in-the-money put options. As an analyst, you recognize that this is not just a statistical anomaly; it is a precursor to potential price turbulence caused by the compulsory physical settlement requirement mandated by SEBI for individual stock derivatives.

Physical settlement implies that at the contract’s maturity, the parties must deliver or accept the actual shares rather than merely settling the difference in cash. This requirement forces market participants, particularly those with short positions, to scramble for the underlying stock to fulfill their delivery obligations. As the expiry date draws near, this ‘delivery pressure’ often creates artificial demand or supply imbalances, driving the stock price toward the strike price regardless of the firm’s intrinsic value.

Analysts must incorporate this ‘pinning effect’ into their short-term risk models, as the price action on expiry day often deviates from fundamental trends due to these technical, rather than commercial, demands.

Consider a case where a company’s share price is hovering near a strike price with high open interest. If the stock settles in-the-money, the sudden demand for delivery creates a liquidity squeeze for short sellers who do not hold the underlying shares in their demat accounts. This leads to a frantic purchasing of shares in the open market, causing a sharp, transient spike in volatility.

Failing to anticipate this mechanic can lead to poor execution of client orders or, worse, an inaccurate assessment of the asset’s true volatility profile during the monthly settlement cycle.

When evaluating a stock for a client’s short-term tactical allocation, one must differentiate between market-driven volatility and settlement-driven volatility. A stock might appear technically weak, but if the open interest in put options suggests a looming physical delivery crunch, a counter-intuitive price rally could occur as shorts close their positions. Recognizing this allows you to provide a more sophisticated perspective, ensuring your recommendations are insulated from the mechanical distortions of the Indian derivative market.

Nuance

⚠️ Nuance
Candidates often assume that volatility naturally dissipates as the expiry approaches, equating maturity with certainty. In reality, the physical settlement requirement introduces ‘delivery risk,’ which acts as a catalyst for volatility precisely when the contract is most sensitive to the underlying price. You must remember that unlike cash-settled index derivatives, the obligation to provide physical stock creates a mandatory market interaction that can override rational pricing models for a short, intense window of time.

Check Your Understanding

Practice Question 1

A trader holds a short position in a stock derivative that is expected to settle in-the-money on the expiry date. Which of the following best describes the potential impact on the stock’s price near expiry due to physical settlement requirements?

Practice Question 2

How does the settlement of index derivatives typically differ from the settlement of individual stock derivatives in the Indian market?

This is a companion read for Section 10.2 — Underlying concepts in derivatives from PASS Investment Adviser (Level 1) by Akhilesh Gururani, available on Amazon Kindle.

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