I only recently truly understood why the word Alpha is used so frequently in the finance world. When it comes to the meaning of Alpha, many people only know that it represents excess returns in investing, but in fact, the story behind this word is much deeper than we think.

Alpha is the first letter of the Greek alphabet, uppercase Α, lowercase α. The origin of this word is quite interesting—it comes from ancient Greek and entered English around the year 1300. Tracing further back, the Greeks actually borrowed it from the Phoenician alphabet and then adapted it into a vowel letter. The original Phoenician word was aleph, meaning cow. When the Greeks borrowed it, they changed it to Alpha. The evolution of language is truly fascinating.

In Greek culture, Alpha represents the beginning, while the last letter Omega symbolizes the end. This symbolic meaning even appears in the New Testament—"I am the Alpha and the Omega; I am the beginning and the end." It reflects the ancient philosophical thinking about the start and conclusion of things. Therefore, Alpha is more than just a letter; it is a cultural symbol.

Beyond the letter itself, Alpha has found new applications across various fields. Starting in the 1620s, it was used to denote the first in a sequence. By 1603, astronomers began naming constellations with Greek letters, with the brightest star called Alpha. Later, in ethology, scientists introduced the concept of Alpha male in the 1960s, referring to the dominant male in a group. Around 1992, this concept was applied to human society, describing people who are leadership-oriented, assertive, and confident.

From the name of the letter to a symbol of beginning, and then to widespread applications across fields, the evolution of the word Alpha perfectly illustrates how language enriches itself as human understanding deepens. Especially in finance, Alpha's meaning has evolved into a key indicator of investment ability. Sometimes, the story behind a word is more interesting than its actual use.