The stock market has always held an allure for those looking to make significant returns on their investments. It is dynamic, continuously evolving, and with the advent of new technologies, the future of stock trading promises to be even more innovative and seamless. This article seeks to explore some of the advancements and trends that are shaping the future of stock trading, keeping in mind essential areas like 'what is PE ratio in share market', and the meaning of terms like 'Demat'.

The Price to Earnings (PE) ratio is an important term in the share market. Understanding what is PE ratio in share market is crucial for potential investors. The PE ratio measures the market price of a company's share in relation to its earnings per share (EPS). It gives investors an idea of what they are paying for each rupee of the company's earnings. For example, if a company's shares are trading at INR 20 and its EPS is INR 5, then the PE ratio would be 4 (20/5). This would mean that an investor is willing to pay INR 4 for every rupee that the company earns.

When dealing with stock trading, understanding the term 'Demat' is equally important. The term 'Demat' is short for dematerialized accounts. Demat meaning pertains to an account that investors hold to enable electronic transactions of securities in the stock market. It eliminates the traditional physical certificates, making it easy and hassle-free to handle securities. The process involves an investor opening a Demat account with a Depository Participant (DP), then purchasing or selling stocks which automatically get updated in the Demat account.

Now, as we are equipped with the basic understanding of essential concepts like PE ratio and Demat, let's delve into how technology is shaping the future of stock trading.

Algorithmic trading, also known as algo-trading or black-box trading, is one of such advancements. It involves using complex mathematical formulas and supercomputers to make high-speed trading decisions. More and more institutional investors are adopting algo-trading for its efficiency, speed, and reduced chances of human error.

Blockchain technology, most commonly associated with cryptocurrencies, is making its way into the share market too. Blockchain, with its decentralized and unalterable transaction register, could potentially improve the transparency, speed, and security of stock transactions.

AI and machine learning are also impacting stock trading. They can analyze vast amounts of financial data quickly and accurately, providing traders with real-time insights and even predictive analysis of future market trends and stock price movements.

Online brokerages and trading platforms have significantly transformed stock trading. They have made trading accessible to the masses, with user-friendly interfaces and lower transaction fees. Robo-advisory services, which provide automated investment advice based on algorithms, are gaining popularity, especially among new and low-budget investors.

Also, the introduction of fractional shares trading enables investors to purchase stocks that they would otherwise find unaffordable. This development makes investing more accessible to a broader audience, promoting a more diverse investor base.

While these trends hint at an exciting future for stock trading, they come with their own set of challenges. Issues like cybersecurity, high dependency on technology, and concerns over market fairness and transparency are inevitable.

Disclaimer: Stock Market investments are subject to market risks. It is important for each investor to understand these risks and take necessary measures to mitigate them. Any prospective investor should thoroughly research and even consider seeking advice from a financial advisor before investing in the share market.

In conclusion, the future of stock trading looks promising with the advent of new technologies. They not only promise to increase efficiency but also make trading accessible to a mass audience. However, investors need to be aware of both the potential rewards and risks associated with these advancements. Also, understanding stock market fundamentals, such as the PE ratio and the concept of Demat, will always remain crucial to successful trading, irrespective of the technological changes.