This strategy is under taken by a portfolio manager who uses numerous investment instruments to achieve results from both increasing and decreasing prices in various markets conditions.
In a rapidly rising market, generally, market neutral funds will underperform the market. In a falling market, typically, market neutral funds will dramatically outperform the markets.

Source: Arrow Capital Management Inc./Pertrac, December 1999 – December 2012.
Incorporating funds that invest using a market-neutral approach into your portfolio can improve your ability to protect and build wealth.