<\/span><\/h2>\nThere are debates about how efficient the stock market is.<\/p>\n
My first instinct was to assume that it’s semi-strong form efficient. But let’s think about it…<\/p>\n
The reason I think it’s not\u00a0<\/strong>strong form efficient is because insider trading\u00a0can\u00a0<\/strong>generate superior returns. This is supported by the fact that it’s punishable under law and the rapid changes in stocks’ prices after a release of new public information (publishing quarterly earnings, beating expectations etc.).<\/p>\nOn the other hand, in order for a market to be semi-strong form efficient, all publicly available information<\/strong> need to be reflected in securities’ prices. This means prices being completely immune to human emotions, which is not always the case. However, the market is still efficient enough that all these discrepancies are quickly fixed.<\/p>\nSo I’m not sure if fully, but the stock market still seems closest to semi-strong efficient. At least to the extent that allocating extra time in order to beat it won’t be worth it. In other words: any private investor should adopt a passive investing strategy<\/strong> rather than an active one.<\/p>\nFYI Amateur investors aside, 99%+ of professional traders and large funds also fail to continuously outperform the market.<\/p>\n
<\/span>Summary<\/span><\/h2>\nThe weak form<\/strong> of the EMH states that prices reflect all past price and volume information.<\/p>\nThe semi-strong form<\/strong> of the EMH states that prices reflect all publicly available information.<\/p>\nThe strong form<\/strong> of the EMH states that prices reflect all public and private information.<\/p>\nAs an individual investor in the stock market, don’t underestimate the power of index & chill.<\/p>\n
<\/p>\n","protected":false},"excerpt":{"rendered":"
Efficient Market Hypothesis (EMH) is the hypothesis that securities trade at their fair value i.e. their prices reflect all currently known information. In this post, I’ll explain how we determine if a market is efficient or not, in a beginner-friendly manner. Basically, it’s a matter of how fast trading activity reflects new information in prices. …<\/p>\n","protected":false},"author":1,"featured_media":1475,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[13],"tags":[],"ppma_author":[4],"class_list":["post-1473","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-finance-economics"],"yoast_head":"\n
Market Efficiency (Efficient Market Hypothesis) - D. Petkovski<\/title>\n \n \n \n","yoast_head_json":{"title":"Market Efficiency (Efficient Market Hypothesis) - D. Petkovski","description":"Efficient Market Hypothesis (EMH) is the hypothesis that securities trade at their fair value i.e. their prices reflect all currently known information.","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"http:\/\/localhost\/dpetkovski\/market-efficiency-efficient-market-hypothesis\/","schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"Article","@id":"http:\/\/localhost\/dpetkovski\/market-efficiency-efficient-market-hypothesis\/#article","isPartOf":{"@id":"http:\/\/localhost\/dpetkovski\/market-efficiency-efficient-market-hypothesis\/"},"author":{"name":"D. 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Sharing knowledge. \r\n"}],"_links":{"self":[{"href":"http:\/\/localhost\/dpetkovski\/wp-json\/wp\/v2\/posts\/1473"}],"collection":[{"href":"http:\/\/localhost\/dpetkovski\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/localhost\/dpetkovski\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/localhost\/dpetkovski\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/localhost\/dpetkovski\/wp-json\/wp\/v2\/comments?post=1473"}],"version-history":[{"count":6,"href":"http:\/\/localhost\/dpetkovski\/wp-json\/wp\/v2\/posts\/1473\/revisions"}],"predecessor-version":[{"id":2208,"href":"http:\/\/localhost\/dpetkovski\/wp-json\/wp\/v2\/posts\/1473\/revisions\/2208"}],"wp:featuredmedia":[{"embeddable":true,"href":"http:\/\/localhost\/dpetkovski\/wp-json\/wp\/v2\/media\/1475"}],"wp:attachment":[{"href":"http:\/\/localhost\/dpetkovski\/wp-json\/wp\/v2\/media?parent=1473"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/localhost\/dpetkovski\/wp-json\/wp\/v2\/categories?post=1473"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/localhost\/dpetkovski\/wp-json\/wp\/v2\/tags?post=1473"},{"taxonomy":"author","embeddable":true,"href":"http:\/\/localhost\/dpetkovski\/wp-json\/wp\/v2\/ppma_author?post=1473"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}