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Market Efficiency and Information Asymmetry

PYQs

8

Articles

1

Momentum

21

Phase IFoundation

Background

Overview

Understanding market efficiency and information asymmetry is fundamental to analyzing financial market behavior, the rationale for regulations (e.g., insider trading laws), and the challenges faced by investors and fund managers in generating returns.

The concept of market efficiency posits that financial asset prices fully reflect all available information. Information asymmetry, conversely, refers to situations where one party in a transaction has more or better information than the other.

Phase IIStatic core

Facts & tables

Key facts

Efficient Market Hypothesis (EMH)

Proposes that asset prices reflect all available information, making it difficult to consistently achieve abnormal returns.

Forms of EMH

Weak (past prices), Semi-strong (public info), Strong (all info, public & private).

Efficiently Inefficient Markets

A practical observation where mispricings exist but are quickly exploited and corrected, preventing consistent alpha generation.

Information Asymmetry

A condition where market participants do not have equal access to relevant information, potentially leading to market inefficiencies.

Reference table

Static syllabus anchors

TypeReference
Conceptual areaFinancial Markets & Instruments

Reference table

Institutions & roles

BodyRole
Securities and Exchange Board of India (SEBI)Enforces fair practices and prevents insider trading to reduce information asymmetry
Phase IIIExam lens

Prelims angle

Overview

Prelims angle: Multi-statement analysis

Prelims angle: Factual recall

Quick revision

  • EMH states prices reflect all information.
  • Three forms: weak, semi-strong, strong.
  • "Efficiently inefficient" means mispricings are short-lived.
  • Reduced information asymmetry limits alpha opportunities.
  • Crucial for understanding market regulation.

High-confidence PYQs

2026Multi-statement analysis, Factual recall

With reference to different Committees in India, consider the following details : | Sl. No. | Committee | Objective | Organization under which it was formed...

EconomyOpen question
2025Multi-statement analysis, Institutional roles and functions

Consider the following statements: I. India accounts for a very large portion of all equity option contracts traded globally thus exhibiting a great boom. I...

EconomyOpen question
2024Multi-statement analysis, Factual recall

Consider the following statements: 1. In India, Non-Banking Financial Companies can access the Liquidity Adjustment Facility window of the Reserve Bank of I...

EconomyOpen question
2023Multi-statement analysis, Conceptual understanding

Consider the following markets: 1. Government Bond Market 2. Call Money Market 3. Treasury Bill Market 4. Stock Market How many of the above are included i...

EconomyOpen question
2020Multi-statement analysis, Factual recall

With reference of the Indian economy, consider the following statements: 1. ‘Commercial Paper’ is a short-term unsecured promissory note. 2. ‘Certificate of...

EconomyOpen question

Which of the following phrases defines the nature of the ‘Hundi’ generally referred to in the sources of the post-Harsha period?

Medieval HistoryOpen question
2020Definition-based questions, Factual recall

With reference of the Indian economy, consider the following statements: 1. ‘Commercial Paper’ is a short-term unsecured promissory note. 2. ‘Certificate of...

EconomyOpen question

Which of the following phrases defines the nature of the ‘Hundi’ generally referred to in the sources of the post-Harsha period?

Medieval HistoryOpen question
2019Factual recall, Definition-based questions

Which of the following is issued by registered foreign portfolio investors to overseas investors who want to be part of the Indian stock market without regis...

EconomyOpen question

The Chairman of public sector banks are selected by the

EconomyOpen question
2019Factual recall, Institutional roles and functions

Which of the following is issued by registered foreign portfolio investors to overseas investors who want to be part of the Indian stock market without regis...

EconomyOpen question

The Chairman of public sector banks are selected by the

EconomyOpen question

Topic timeline

Financial Markets & Instruments
Prelims 2019· Factual recall, Definition-based questions

Which of the following is issued by registered foreign portfolio investors to overseas investors who want to be part of the Indian stock market without regis...

Open question

The Chairman of public sector banks are selected by the

Open question
Prelims 2019· Factual recall, Institutional roles and functions

Which of the following is issued by registered foreign portfolio investors to overseas investors who want to be part of the Indian stock market without regis...

Open question

The Chairman of public sector banks are selected by the

Open question
Prelims 2020· Multi-statement analysis, Factual recall

With reference of the Indian economy, consider the following statements: 1. ‘Commercial Paper’ is a short-term unsecured promissory note. 2. ‘Certificate of...

Open question

Which of the following phrases defines the nature of the ‘Hundi’ generally referred to in the sources of the post-Harsha period?

Open question
Prelims 2020· Definition-based questions, Factual recall

With reference of the Indian economy, consider the following statements: 1. ‘Commercial Paper’ is a short-term unsecured promissory note. 2. ‘Certificate of...

Open question

Which of the following phrases defines the nature of the ‘Hundi’ generally referred to in the sources of the post-Harsha period?

Open question
Prelims 2023· Multi-statement analysis, Conceptual understanding

Consider the following markets: 1. Government Bond Market 2. Call Money Market 3. Treasury Bill Market 4. Stock Market How many of the above are included i...

Open question
Prelims 2024· Multi-statement analysis, Factual recall

Consider the following statements: 1. In India, Non-Banking Financial Companies can access the Liquidity Adjustment Facility window of the Reserve Bank of I...

Open question
Prelims 2025· Multi-statement analysis, Institutional roles and functions

Consider the following statements: I. India accounts for a very large portion of all equity option contracts traded globally thus exhibiting a great boom. I...

Open question
Prelims 2026· Multi-statement analysis, Factual recall

With reference to different Committees in India, consider the following details : | Sl. No. | Committee | Objective | Organization under which it was formed...

Open question

Elusive alpha?

24 Aug 2026 · Market efficiency suggests prices reflect all information, hindering consistent alpha. The article highlights markets as 'efficiently inefficient,' where temporary mispricings are quickly corrected due to widespread information access and computational power, limiting opportunities from information asymmetry.

Read article

Related topics

Current topic

Market Efficiency and Information Asymmetry

Practice writing on this topic

UPSC has asked 8 linked questions on Market Efficiency and Information Asymmetry in Mains. Write an answer to one — and get it evaluated.

See Mains PYQsEvaluate an answer

UPSC Prelims PYQs on Market Efficiency and Information Asymmetry

Practice official previous year questions asked by UPSC related to this concept.

With reference to different Committees in India, consider the following details : | Sl. No. | Committee | Objective | Organization under which it was formed...

2026·Economy
Solve

Consider the following statements: I. India accounts for a very large portion of all equity option contracts traded globally thus exhibiting a great boom. I...

2025·Economy
Solve

Which of the following is issued by registered foreign portfolio investors to overseas investors who want to be part of the Indian stock market without regis...

2019·Economy
Solve

Consider the following statements: 1. In India, Non-Banking Financial Companies can access the Liquidity Adjustment Facility window of the Reserve Bank of I...

2024·Economy
Solve

With reference of the Indian economy, consider the following statements: 1. ‘Commercial Paper’ is a short-term unsecured promissory note. 2. ‘Certificate of...

2020·Economy
Solve

Which of the following phrases defines the nature of the ‘Hundi’ generally referred to in the sources of the post-Harsha period?

2020·Medieval History
Solve

Consider the following markets: 1. Government Bond Market 2. Call Money Market 3. Treasury Bill Market 4. Stock Market How many of the above are included i...

2023·Economy
Solve

The Chairman of public sector banks are selected by the

2019·Economy
Solve

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