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行为金融学

如果考虑心理和情绪因素对交易结果的影响,交易心理学是非常有趣的一个领域。

There are so many facets of a person’s behaviour that play a role in influencing financial decision making.

 

Combine this with the stress that the market volatilities and aggressive price fluctuations evoke, it’s no surprise that the study of feelings and how they drive traders to act certain ways has become so popular.

 

Interwoven within this mesh of psychological concepts is behavioural finance. Referred to as a subset of behavioural economics, behavioural finance suggests that investor behaviours are influenced by psychological elements and biases.

It further proposes that variances within financial markets may be attributed to these factors, for e.g., aggressive price movements of particular asset like stocks. 

 

In fact, growing recognition of this research has prompted renowned institutions like the Securities and Exchange Commission to assign staff to further explore the field of behavioural finance, and its impact on financial transactions.

偏见的影响

One of the core components of behavioural finance has to do with the influence of biases. More specifically, the notion is that biases can be categorised into one of 5 core concepts influencing the market and/or trading outcomes. 它们是:

从众行为

Herd behaviour refers to those instances when investors or other financial practitioners copy the financial behaviours of a larger majority (i.e., the herd). This behaviour is frequently witnessed in the stock market and often the reason for selloffs or rallies.

情绪缺口

Emotional gap pertains to decision making driven by intense emotions or emotional stress. This behaviour is often the reason why people make illogical decisions.

自我归因

Self-attribution involves making decisions with an overconfident reliance on one’s own knowledge or skill. This tends to arise from one’s existing proficiency in a specific domain. In this instance, an investor may deem their knowledge more favourably than others, even if this isn’t objectively true.

心理账户

心理账户是诺贝尔奖获得者、经济学家Richard Thaler提出的概念,是指个人会为相同的金钱赋予不同的价值。这个价值往往是基于主观的标准,可能导致非理性的投资或交易决定。

锚定

行为金融学的锚定是指人们无意识地使用不相关的信息,如证券的初始价格作为以后对该证券做出决策的固定参考点。

行为金融学范畴内的研究和分析还揭示了投资者表现出的其它个人偏见和特质。其中包括:

确认偏见:

occurs when investors favour information that aligns with their existing beliefs, even if flawed.

经验或近因偏见:

最近的事件会影响投资者对未来发生的事件的认知,即经验或近因偏见。

避免损失:

相对于实现收益,投资者倾向于优先避免损失,导致避险行为。

熟悉偏见:

manifests when investors favour familiar investments, potentially limiting diversification. This often leads to a preference for domestic or locally known investments, neglecting broader market exposure.

每种偏见都反映了影响金融领域决策的认知倾向,它会影响投资者如何评估和应对信息、事件和潜在的风险。

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