
Is the Market Efficient From a DCF Perspective?
This is a follow up from my previous study on DCF in practice. Recap:
- The discrepancy between implied DCF in stock price and real future DCF has strong correlation with the price performance (spearman ρ~=-0.45, p-value < 0.00001).
- This pattern is consistent across the past 10 years, valuation multiples, and different discount rate)
- Being cheap alone only explain 10% of this correlation. In fact, expensive stocks with outperformed future cash flow show even higher returns.
Therefore DCF is a practical tool to convert your business understanding edge (quantified as future cash flow prediction) into alpha investment return.
This study is a follow up: The discrepancy translates to price performance. But the price performance is relative to the market (SP 500). Is the market itself efficient or not statistically? This is valuable because foremost we want to know how many opportunities are there? The last study show value investing works, but it's useless if the market is mostly correct.
In this study: we experiment with many discount rate and find the % stocks under each are overvalued, fairly valued, or undervalued. Hint: there are huge misprice in the market at any given time!
I remember reading Warren Buffett's comment on "Intelligent Investors." The rough idea is that if Efficient Market Hypothesis is correct, it won't be possible (too low a p-value) that so many forks following value investing's principle got so rich so consistently. My two studies verified this point with the most recent data.