Rebalancing and Corporate Actions


We explore rebalancing an index and the importance of corporate action treatments.

What is rebalancing?

Rebalancing is a strategic process used in financial management to adjust the asset allocation of a portfolio or an index.

The goal is to bring the portfolio back to its target or desired asset allocation, ensuring that it aligns with the investor's risk tolerance, investment objectives, and market conditions. This involves buying or selling assets within the portfolio to maintain the intended balance, especially after market fluctuations or changes in the financial landscape.

What are corporate actions?

Corporate actions refer to events initiated by a publicly-traded company that can impact its shareholders and the overall market. These actions include events such as stock splits, mergers, acquisitions, dividends, and rights issues.

Corporate actions can significantly influence the valuation and composition of an index or portfolio, requiring careful consideration and adjustment to maintain the desired investment strategy.


Why should I rebalance my index?

Rebalancing your index is crucial for maintaining the alignment of your investment portfolio with your financial goals and risk tolerance. Over time, market fluctuations can lead to shifts in the relative weights of different assets within the index, potentially exposing you to unintended risks.
Regular rebalancing allows you to realign the portfolio, selling relatively high-performing assets and buying those that may be undervalued. This disciplined approach helps control risk, prevents overconcentration in specific sectors or stocks, and ensures that your investment strategy remains consistent with your original objectives.

By periodically rebalancing, you actively manage your portfolio's asset allocation, promoting a more stable and resilient investment strategy in the face of changing market conditions.

How to rebalance an index?

Rebalancing an index involves adjusting the weightings of its constituent securities to ensure that it accurately reflects the intended market representation or investment strategy.


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How to deploy corporate actions on an index?

Deploying corporate actions on an index entails incorporating the effects of events like stock splits, mergers, or dividends into the index calculation.

This ensures that the index remains an accurate representation of the market or investment strategy, accounting for any changes in the value or structure of the constituent securities.
Managing corporate actions in an index requires coordination and diligence to maintain the index's integrity and provide investors with an accurate reflection of the market's dynamics.



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Frequently Asked Questions

Index construction refers to the process of creating and maintaining a market index, which is a hypothetical portfolio of securities that represents a specific segment of the overall market.

While direct indexing requires you to choose amongst pre-packaged solutions, custom indexing allows for unlimited customization within different factors, allowing investors to build a portfolio that truly reflects their unique investment goals and preferences.

While active investing strategies focus on individual securities and a more hands-on approach, passive investing strategies tend to focus on purchasing shares of index funds or ETFs in an attempt to mirror or beat the performance of market indexes.

A security is the ownership or debt with value. A stock is a type of security that gives the holder of the stock ownership or equity of the publicly-traded company.

A share is a unit of ownership measured by the number of shares you own, whereas a stock is a unit of equity, measured by the percentage of ownership of the company.

A portfolio manager handles investments and other financial products that make up a portfolio. An asset manager may also manage portfolios, but they mainly handle cash and assets, which a portfolio manager does not.

While a benchmark only serves as a standard to measure index performance against, an index is created for a variety of reasons, and one of its purposes is to act as a benchmark. In other words, a benchmark is usually always an index, but an index doesn’t necessarily have to be a benchmark.

Rebalancing is a more automated process where price and market-cap weighted indices are rebalanced automatically. Reconstitution, on the other hand, requires the manual adding and removal of securities from an index, based on whether or not these securities are meeting index criteria.

An index fund is a mutual fund which tracks an index, while an ETF is an exchange traded asset tracking the performance of an index.

An index is a hypothetical basket of stocks. In order to invest in an index, it would need to be an investable product that tracks an index. A few examples of an investable product are mutual funds and ETFs.

Index rebalancing refers to the process of adjusting the composition and weights of securities within an index. It is typically done periodically to maintain the index's target representation and desired characteristics. Index rebalancing helps maintain the integrity of the index and ensures that it continues to accurately reflect the targeted market segment. It allows for adjustments to account for changes in market conditions, company fundamentals, and other factors that may affect the composition and weights of the index components.

Creating a stock index involves several steps and considerations, including defining the index objective, selecting the index components, determining the weighting methodology, setting the initial index values, establishing the index calculation methodology, regular maintenance and rebalancing, index calculation and dissemination and index governance and oversight.

Constructing an index for research purposes involves a tailored approach to meet specific research objectives. This includes defining research objectives, selecting the relevant securities, determining inclusion and exclusion criteria, determining weighting methodology, setting the index universe, establishing index calculation methodology, data collection and management, performing backtesting and validation, documenting index construction methodology and analyzing and interpreting results.

Creating your own index requires careful consideration of various factors, including your investment objectives, the availability of data, and the resources needed to maintain and calculate the index. It may be beneficial to seek professional advice or consult with experts in index construction to ensure the integrity and accuracy of your self-created index.

Creating your own index fund involves several steps and considerations: define the investment objective, select the index components, determine the weighting methodology, set the initial fund composition, establish a rebalancing strategy, implement the fund's portfolio, track and monitor performance, consider legal and regulatory requirements, consider administration and custody, develop a distribution strategy, and comply with reporting and governance.

Commonly Used Terms

custom indexing is the process of setting specific parameters on the stocks you’d like to invest money in, allowing you to personalize your investments based on your individual values, goals, preferences, risk tolerance and tax positioning.

direct indexing is an investing strategy that involves purchasing the individual stocks within an index, maintaining the same weights in the index.

active management involves an investment manager making investment decisions by tracking the performance of an investment portfolio.

passive management involves a fund’s portfolio mirroring a market index, by selecting stocks to be included in a portfolio, unlike active management.

A market index is a hypothetical portfolio that contains investment holdings. The value of a market index is based on the prices of the underlying holdings.

EHM, or efficient market hypothesis is a theory coined by Eugene Farma, which states that active managers can beat the market only for a given period of time, as their success is simply a matter of chance. EHM suggests that long-term passive management delivers better results than asset management.

active investing involves the ongoing buying and selling of securities by monitoring market index.

passive investing is a long-term strategy that involves buying securities that mirrors a market index.

thematic investing focuses on investing in long-term or macro-level trends. Examples of thematic investment themes include water, robotics & AI, gaming & e-sports, and space exploration.

ESG investing emphasizes on investments that prioritizes optimal environmental, social and governance outcomes.

factor investing is a type of portfolio management strategy that targets quantifiable metrics or factors that can explain differences in stock returns. These factors often include value, size, volatility, momentum, and quality.

exchange traded funds, or ETFs refer to a type of investment fund that is traded on a stock exchange. An ETF usually tracks a generic market index and allows an investor to potentially lower risks and exposure, while diversifying their portfolio.

A registered investment advisor, or RIA, is an individual or firm that advises clients on investment decisions and manages their investment portfolios.

backtesting allows an investor to test an investment strategy using historical data to assess how it would have performed before earning actual returns.

rebalancing involves the process of realigning the weightings of assets within a portfolio, by buying or selling the assets to maintain the original or desired level of asset allocation or risk.

a systematic portfolio contains securities that maintains a price higher than the predetermined level by a systematic manager. A systematic portfolio strategy invovvles trading decisions based on market price trends.

a rules-based investment strategy follows smart investment rules and aims to deliver active returns in a cost-efficient manner.

an active return is the percentage difference between a benchmark and the actual return.

an index provider is a firm that creates, calculates and maintains market indices based on any given investment strategy.

sustainable investing is a type of investment strategy that prioritizes environmental, social and corporate governance impacts before investing in a particular company, venture or fund. It is also called ESG investing or SRI.

an investment strategy is a set of principles that guide an investor to make sound investment decisions based on their financial goals, values, risk tolerance and preferences.

alpha strategies are active investment strategies that choose investments that have the potential to beat the market. Alpha is also known as “excess returns” or “abnormal rate of return.”

benchmarking is the process of setting a standard against which the performance of an investment strategy can be measured.

reconstitution is the re-evaluation of a market index to ensure that an index reflects up-to-date market cap and is balanced.

a bond is a type of security where the issuer of a bond owes the holder of the bond a debt, and the issuer is obligated to repay the principal of the bond at the maturity date, as well as interest on the bond.

asset allocation is the process of dividing an investment among different types of assets, such as stocks, bonds and cash.

quant, or quantitative analysis, is the process of using mathematical and statistical methods to make investment decisions.

index funds are a type of mutual fund or exchange-traded fund (ETF) that aim to replicate the performance of a specific market index.

a mutual fund is a type of investment fund that pools money from several investors to purchase securities.

derivative structured products are financial instruments that combine derivatives with other underlying assets to create investment products with unique risk and return characteristics.

similar to mutual funds, a hedge fund is a type of pooled investment fund that trades in relatively liquid assets. Hedge funds primarily use portfolio construction, complex trading and risk management techniques in an attempt to improve performance.

traders who watch market prices know when an index fund will update its components, allowing them to front-run the trade by buying or selling the shares to get ahead of the market and gain an edge. This is not considered illegal because it rewards individuals who pay close attention to information that already exists in the market. However, SEC Rule 17(j)-1 prohibits insiders from taking advantage of their knowledge of client trades for personal gain.

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