日本の株式市場が好転しはじめた2003年頃から、新規公開銘柄の初値が公開価格を上回る状態が軒並み続いた。中には初値が公開価格の数倍となる銘柄まで出現した。このため、一部雑誌などがノーリスク・ハイリターンとか宝くじより確実など株式市場の常識を逸脱する記事を組み、初心者を煽り立てて新規公開銘柄に多くの投資家が群がる異常事態となった。これがIPOバブルと呼ばれている。
しかし、ライブドア・ショックを機に2006年頃から新興市場全体の株価が下落を続け、初値が公開価格を下回ること、公募割れが珍しくなくなるようになり、IPOバブルは崩壊した模様。加えて一部証券会社が売り出し価格を会社側の意向で意図的に吊り上げていたことが判明するなど市場に対し不信感が広がっている。しかし、以前として人気の銘柄は初値が2倍以上になるなど市場の注目度は高いのも事実である。フリー百科事典『ウィキペディア（Wikipedia）』参照
The state for the first value of the brand of a new opening to the public to exceed the price of introduced stock continued across the board since about 2003 when the stock market in Japan had begun to pick up. Even the brand that the first value increases to several times that of the price of introduced stock appeared on the inside. Therefore, it became extraordinary happenings that the magazine etc. united a part of article that deviated from the common sense of the stock market like the certainty etc. from a high no risk return or the lottery, it fueled, the beginner was put up, and a lot of investors crowded the brand of a new opening to the public. This is called IPO bubble.
The first value keeps falling taking the opportunity of the Livedoor shock stock prices of the entire new market from about 2006, and collapses, and however, the crack of the public advertisement ..falling below than the price of introduced stock.. comes to have become not unusual, and the IPO bubble will collapsed. Additionally, distrust has extended to the market as it turns out that the brokerage firm was intentionally lifting up a part of offered price by the intention of the company. However, the high one is true at a noteworthy level of the market as the first value becomes twice or more as former as for a popular brand.
