独立管理的产品全部正收益，他是如何做到的？

Core Viewpoint - The article highlights the investment philosophy and strategies of Tian Junwei, a prominent fund manager at Bosera Fund, emphasizing his unique GARP (Growth at a Reasonable Price) investment approach and his ability to generate consistent absolute returns in the public fund sector [1][3]. Group 1: Investment Strategy - Tian Junwei employs a GARP investment framework, focusing on buying growth stocks at reasonable valuations, which involves assessing both the quality and speed of growth [4][6]. - His investment style is characterized by a "middle-ground" approach, balancing between growth and value investing, and he emphasizes the importance of understanding different business models and their sustainability [3][4]. - The core of his strategy is to identify high-quality growth companies that are either in a significant industry growth trend or possess strong competitive advantages [6][7]. Group 2: Portfolio Management - Tian has developed a benchmark-oriented mindset in portfolio management, recognizing that a combination of standard and self-selected actions is essential for achieving sustained excess returns [8][16]. - He believes that excessive deviation from performance benchmarks can amplify both positive and negative market conditions, which is detrimental to achieving good excess returns [8][16]. - The primary source of Tian's excess returns is individual stock selection, as he is known for his ability to identify mispriced investment opportunities through extensive research [8][9][56]. Group 3: Stock Selection Process - Tian's stock selection process involves a dual approach: filtering stocks through financial reports and narrowing down choices based on industry trends [28][29]. - He emphasizes the importance of understanding industry trends to improve stock selection efficiency and success rates, aiming for a balanced portfolio that includes both high-potential "grey horses" and more established companies [29][55]. - His investment philosophy includes a focus on left-side buying, which requires a strong conviction in growth potential that differs from market consensus [31][32]. Group 4: Future Outlook - Tian identifies three promising investment directions: industrial digital transformation, industry safety and self-sufficiency, and emerging and future industries, particularly within the technology sector [57][59]. - He believes that these areas, while not necessarily short-term hot topics, will provide significant investment opportunities over the long term [60].