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Replication is a fascinating topic in finance that combines a variety of complex instruments to create a position that mirrors a given underlying asset. This process allows investors to save on transaction costs and better manage their risk profile. With a Delta One derivative, the goal is to create a structure or product that moves in the same magnitude and direction as the underlying. Many Delta One products are heavily traded on exchanges, like ETFs, but others are designed in custom over-the-counter markets at the Delta One desk of an investment bank. These products include futures, forwards, equity/index swaps, and synthetic securities assembled using the concept of put-call parity. Trades under the Dela One umbrella are large in size and often implement leverage, so these desks make up an important piece of a bank’s risk exposure.
Introduction to Delta and other Greeks
The Greeks are terms/symbols from the options market that describe the different components and angles of inherent risk in an options position. A few of the most commonly used terms include…
Delta = measures the sensitivity of an option’s price to changes in the underlying asset price
Theta = describes an option’s time decay, which is the value lost as the contract nears its expiration date
Gamma = measures the sensitivity of an option’s delta to changes in the underlying asset price
Vega = measures the sensitivity of an option’s price to changes in the underlying asset’s implied volatility
Rho = measures the sensitivity of an option’s price to changes in the interest rate
Although these terms were originally used for options, they can be applied across derivatives products to get a fuller picture of a position’s risk profile. Breaking up the risks in this way makes hedging more targeted and allows traders/portfolio managers to deal with certain risks in isolation, like in Delta One strategies.
Examples of Delta One Products and Strategies
ETFs are some of the most widely used Delta One products on the market with investors ranging from the retail trader to larger institutions. They implement the concept of Delta One by creating a fund that mirrors the movements of a big market index, like the S&P 500. Doing this saves investors the transaction costs and time; otherwise, investors would have to replicate an index themselves by purchasing all the stocks in the index, constantly rebalancing the portfolio, and conducting research to monitor the positions. Instead, ETFs offer a low-cost channel for investors to gain broad exposure to a market index or specific sector.
Swaps, like total return swaps or equity swaps, are another type of Delta One product that offers investors an instrument that mimics the returns of a given stock or index but without actually holding the underlying asset. Swaps are structured to give investors the profits and losses of a given asset or portfolio in exchange for periodic fee payments. In an equity swap, two parties exchange the returns of different assets, and one party receives the net amount, which is similar to the structure of an interest rate swap. The main advantage of these types of stocks is that they offer the benefits of stock/asset ownership without the operational burden of actually holding them. It also gives risky investors inexpensive access to significant leverage since the contracts don’t typically require big payments upfront. When Archegos Capital crashed earlier this year, it was discovered that the fund had taken huge, concentrated positions on only a few stocks and bolstered them by using total return swaps. According to a Wall Street Journal article, the main benefits to the fund of using total return swaps were that it “…helped enable the firm to increase its leverage, in essence owning more of an asset or assets than its cash would have otherwise allowed it to. In addition, these swaps allow investors like Mr. Hwang (Founder of Archegos) to maintain their anonymity” (WSJ). Once the positions started moving against Archegos’ expectations, counterparties quickly found out that the fund would not have the collateral to meet its obligations and that they’d have to begin liquidating their positions. Since Archegos’ positions were only in a handful of stocks, the huge sell-off moved markets and led to $5.5 billion in losses for one of their biggest counterparties, Credit Suisse.
Finally, synthetic Delta One positions can be structured by putting together portfolios using the concept of put-call parity. Put-call parity describes how a position in a risk-free instrument, European call and put, and stock can be replicated using a combination of the remaining three variables.
Put-Call Parity: c + X/(1+rfr)^t = S + p
c = call, c = S + p – X/(1+rfr)^t
p = put, p = c + X/(1+rfr)^t – S
S = stock, S = c + X/(1+rfr)^t – p
X/(1+rfr)^t = risk-free instrument X/(1+rfr)^t = S + p – c
For example, a synthetic position in a stock can be replicated by combining long positions in a call and risk-free instrument while also selling a put. The equations above break down the different combinations and the position they replicate. Taking a synthetic position allows for some of the same benefits as the other products mentioned like offering anonymity and leverage, but they also allow for more flexibility in adjusting the individual components. The concept of put-call parity can also be extended into areas such as arbitrage and hedging strategies like fiduciary calls and protective puts.
Conclusion
Delta One derivatives are key components of modern investing, especially as products like ETFs continue to grow and become more widespread. The rise of ETFs has made the Delta One desk an exciting place to be as the finance industry continues to innovate in this area. Like most derivatives, they offer significant cost and operational benefits to investors and increase liquidity in the markets they are traded in. These instruments come with their risks however, as seen with Archegos Capital. Depending on their structure, they can be difficult to unwind, too complicated to really understand, and give easy access to excess leverage and risk-taking. Diving deep and learning to understand these instruments are what make finance so interesting.




























