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The difference a day makes: Timely disclosure and trading efficiency in the muni market

Journal of Financial Economics 2021 139(1), 313-335
The Real-Time Transaction Reporting System (RTRS) reduced the delay in reporting municipal bond trades from one-day to 15 min. We find a significant reduction in secondary market trading costs after the introduction of the RTRS. Our estimates imply that retail investors benefited primarily from reduced dealer intermediation costs, while large trades benefited from reductions in bargaining costs. Bonds experienced increases in trading volume across the liquidity spectrum. We find higher dealer capital commitment, longer intermediation chains, and fewer pre-arranged trades, all suggesting increased market-making incentives for dealers. These results are largely consistent with predictions from search-based models.

Attentive Options Traders: Textual Changes to 10-Ks and Option Volatility Smirk

Journal of Financial and Quantitative Analysis 2026
In contrast to the “lazy prices” phenomenon in the stock market, more 10-K textual changes lead to larger increases in volatility smirks—consistent with options traders buying more out-of-the-money put options based on negative information disclosed in textual changes. Moreover, the lazy-prices effect is mainly driven by stocks with tradable options, suggesting that limits to arbitrage lead to a delayed response of stock prices. Finally, the return predictability of textual changes is stronger for stocks with larger option volatility smirk changes. Sophisticated options traders, therefore, demonstrate superior skills at extracting relevant information from public filings.

The Good or the Bad? Which Mutual Fund Managers Join Hedge Funds?

Review of Financial Studies 2011 24(9), 3008-3024
Does the mutual fund industry lose its best managers to hedge funds? We find that mutual funds are able to retain managers with good performance in the face of competition from a growing hedge fund industry. On the other hand, poor performers are more likely to leave the mutual fund industry. A small fraction of these poor performers find jobs with smaller and younger hedge fund companies, especially when the hedge fund industry is growing rapidly. Analogously, a small fraction of the better-performing mutual fund managers are retained by allowing them to manage a hedge fund side-by-side.