The concept of the January effect in the stock market was first introduced to the market in 1942 when it was dealt with in The Incredible January Effect, a joint book by Robert Haugen and Joseph Laconishok. A famous seasonal factor in the foreign exchange market is the January effect. The reason for the January effect is that foreign investors exchange their local currency into dollars in their stock market in January and proceed with the repurchase of stocks in US dollars. The currency pairs showing the best January effect are EURUSD and USDCHF. The strong seasonality in January can be attributed to the position realignment at the beginning of the year, although this is not always the case. Although not as much as the above two currency pairs, USDJPY also exhibits seasonality in January. As Japan's fiscal period often coincides with March on the financial books, the window dressing effect from position rebalancing is relatively less in January. and can be seen