Starting on the wrong foot: Seasonality in mutual fund performance

Stephen J. Brown, Juan Sotes-Paladino, Jiaguo(George) Wang, Yaqiong Yao

Research output: Contribution to journalArticleResearchpeer-review

7 Citations (Scopus)


We document a systematic seasonal component in the aggregate underperformance of active mutual funds. At the aggregate level, active funds underperform the market and other passive benchmarks only in the first month of a quarter. This intra-quarter performance seasonality holds across fund sizes and investment styles. The pattern is consistent with short-term stock return reversal effects along with aggregate window-dressing and, to a lesser extent, NAV-inflation practices around quarter-ends. We find marginal or no evidence of microstructure biases, fund investor flows, or cash distributions as sources of this seasonality. Our findings highlight new features of the active management underperformance puzzle.

Original languageEnglish
Pages (from-to)133-150
Number of pages18
JournalJournal of Banking and Finance
Publication statusPublished - 1 Sept 2017


  • Benchmark index
  • Mutual funds
  • Performance evaluation
  • Seasonality

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