芝加哥期權交易所PutWrite指數的風險與報酬

The Risk and Return of CBOE S&P500 PutWrite Index

邱紫菱(Tzu-Ling Chiu)

指導教授 ： 張焯然

國立清華大學/科技管理學院/計量財務金融系/碩士(2017年)

摘要

本篇論文主要研究芝加哥期權交易所下的選擇權策略商品：CBOE S&P 500 PutWrite Index的風險與報酬間的關係。按照該合約內容，透過重組出該投資策略的方式，以風險角度進行被動權益風險、波動風險與動態權益風險的分解，並利用這些風險面向去探討個別風險因子對整個投資策略報酬的影響。而由實證結果可以發現，考慮選擇權delta值而去進行動態調整的動態權益風險為重要的風險來源，並了解到在不同市場狀況下，使用動態調整所帶來的好處。另外，由於動態權益風險為主要的風險來源，故再利用S&P500指數期貨來進行避險，達到完成風險管理的PutWrite指數，進而繼續比較風險與報酬間的關係。

關鍵字

CBOE期權策略指數 ； 選擇權 ； 權益風險

並列摘要

This paper focuses on the return and the risk of one of CBOE options-selling strategies, CBOE S&P 500 PutWrite Index （PUT）. In this strategy, we divide risk into three components, which include passive equity, short volatility and dynamic equity. We will target on the impact to PUT within these risk components. From the empirical results, we find that active equity exposure is a significant source of risk. And this paper also figures out the benefit of using the dynamic equity in different market conditions. In the end, we use S&P500 futures to propose a risk-managed PutWrite strategy to hedge away this active equity exposure and analyze how the adjustment affects the return and risk.

並列關鍵字

CBOE's Strategy Benchmark Indexes ； options ； passive equity ； short volatility ； dynamic equity

參考文獻

1. Bakshi, G., & Kapadia, N. (2003). Delta-hedged gains and the negative market volatility risk premium. Review of Financial Studies, 16(2), 527-566.

2. Bondarenko, O. (2016). An Analysis of Index Option Writing with Monthly and Weekly Rollover. Browser Download This Paper.

3. Feldman, B. E., & Roy, D. (2004). Passive options-based investment strategies: The case of the CBOE S&P 500 buy write index. ETFs and Indexing, 2004(1), 72-89.

4. Figelman, I. (2008). “Expected Return and Risk of Covered Call Strategies..” Journal of Portfolio Management, vol. 34, no. 4 (Summer): 81-97.

6. Israelov, R., & Nielsen, L. N. (2014). Covered Call Strategies: One Fact and Eight Myths. Financial Analysts Journal, 70(6), 23-31.