Single stock put call ratio

The search results provide excellent external link candidates:

• History/Origin: CBOE's founding in 1973 is a key moment in options trading history, which directly impacts the existence of single stock put call ratios. Source 1, 2, 4, 5 all confirm this. I will use a CBOE or a reputable finance history site if available.
  • https://www.cboe.com/insights/videos/from-paper-to-python-a-history-of-options-trading-processes/ (Source 5 - Cboe Global Markets - "From Paper to Python: A History of Options Trading Processes") seems perfect, as it's from the exchange itself and discusses the history of listed options.
• Practical Applications/Market Data: Real-time options data, including put-call ratios, is provided by exchanges.
  • https://www.cboe.com/us/options/market_statistics/ (Source 18 - Cboe U.S. Options Current Market Statistics) provides current market statistics including put/call ratio, excellent for a practical application link.
• Limitations/Criticisms: Several academic papers and articles discuss the limitations and predictive power of put-call ratios.
  • https://www.mdpi.com/2227-7099/7/1/24/pdf (Source 14 - MDPI - "Put–Call Ratio Volume vs. Open Interest in Predicting Market Return: A Frequency Domain Rolling Causality Analysis") is an academic paper on the efficacy and limitations. This looks good for the limitations section.
  • https://www.wallstreetcourier.com/the-cboe-put-call-ratio-a-useful-greed-fear-contrarian-indicator-a-statistical-analysis/ (Source 8 - WallStreetCourier - "The CBOE Put-Call Ratio: A Useful Greed & Fear Contrarian Indicator? - WallStreetCourier") discusses limitations and contrarian aspects. I'll pick one strong academic/research-based link for limitations. The MDPI paper (Source 14) seems more academic. Source 9 also has a good title ("Can Put/Call Ratios Help Predict the Stock Market? An Empirical Examination!") and concludes "put/call ratios have practically no predictive power on market movement, nor can they be an effective timing device." This is very strong for criticism. I will use Source 9.
• Regulation/Oversight: The SEC regulates options markets.
  • https://www.sec.gov/data/sec-and-markets-data (Source 11 - SEC and Markets Data) provides general market data from the SEC. This is a good general link for regulatory context.

So, my external links will be:

1. https://www.cboe.com/insights/videos/from-paper-to-python-a-history-of-options-trading-processes/
2. https://www.sec.gov/data/sec-and-markets-data
3. https://www.cboe.com/us/options/market_statistics/
4. https://www.semanticscholar.org/paper/Can-Put-Call-Ratios-Help-Predict-the-Stock-Market%3F-An-Mofidi/d6560965d0824b4555e09f7a933f3c834a02c3c6 (This is the Semantic Scholar link for Source 9, which is better than the direct PDF link for accessibility).

All look valid and readable. I'm ready to write the article.

My auto-inferred terms are:

• [TERM]: Single stock put call ratio
• [RELATED_TERM]: Put-call ratio (overall market)
• [TERM_CATEGORY]: Options trading and technical analysis

Internal links confirmed:

1. Options contract
2. Put option
3. Call option
4. Open interest
5. Derivative
6. Technical indicator
7. Market sentiment
8. Bearish
9. Bullish
10. Hedging
11. Underlying asset
12. Speculation
13. Trading volume
14. Implied volatility
15. Strike price

I'll ensure each is used exactly once.¹²³⁴⁵, ⁶⁷