8月18日，沪指盘中创下3745.94点的十年新高。从多个指标来看，增量资金正加速涌入A股市场：近日 市场成交量持续放大，8月初日成交额尚在2万亿元以下，而近4个交易日均突破2万亿元，其中18日更是 超过2.7万亿元；7月份，A股新增开户196.36万户，同比增长超70%；央行数据显示，7月份住户存款减 少1.1万亿元，同比多减7800亿元，非银机构存款则增加2.14万亿元，同比多增1.39万亿元。由于非银机 构存款主要涵盖证券、保险及其他非银金融机构存款，因此这一数据成为衡量入市资金的重要参考指 标。此外，近期作为近年来居民存款重要"蓄水池"的国债市场调整明显，也从侧面反映出资金流向的变 化。 媒体一线调查报道同样显示，股民入市热情不断攀升，一些"00后"已加入新股民行列。进入股市固然是 为了盈利，但股市固有的规律以及当前市场的特征，值得新进入者高度重视。只有尊重这些规律与事 实，才有可能获得理想的回报。 第一，保证本金安全是最基本的原则。要知道，当本金下跌50%后，需要上涨100%才能回本，所以只 有确保本金安全，未来才有盈利的可能。不过，本金安全并非指绝对安全，而是在这一原则指导下制定 一系列具体保障措 ...

Group 1 - The Shanghai Composite Index reached a ten-year high of 3745.94 points on August 18, indicating a significant influx of capital into the A-share market, with trading volume exceeding 2 trillion yuan in recent days, peaking at over 2.7 trillion yuan on the 18th [1] - In July, A-shares saw 1.9636 million new accounts opened, a year-on-year increase of over 70%, reflecting growing investor interest [1] - The decrease of 1.1 trillion yuan in household deposits in July, compared to a larger decline of 780 billion yuan year-on-year, alongside a 2.14 trillion yuan increase in non-bank institutional deposits, suggests a shift in capital flow towards the stock market [1] Group 2 - The difficulty of stock selection is increasing, requiring higher levels of professional knowledge from investors, as there are over 5400 listed companies in the A-share market, with 1861 listed after 2020 [3] - Traditional stock selection logic based on consumer familiarity is becoming less applicable, as many sectors have matured, and innovative fields like chips, innovative drugs, AI, and humanoid robots are gaining investor interest [3] - Investors may find it beneficial to participate in A-share investments indirectly through funds or ETFs to manage risks while seizing investment opportunities [3] Group 3 - New investors often enter the market during bullish trends, leading to a false sense of ease in making profits, which can result in aggressive trading behavior [4] - The "newbie welfare period" is typically short-lived, and understanding economic, industry, and corporate development rules is essential for long-term wealth growth in the stock market [4]