On January 22, cross-border ETFs surged again, with E Fund US 50 ETF hitting the limit up, reaching a new high since its listing, closing up 9.97% to 1.169 yuan, leading the ETF market. The premium over the day's net asset value (IOPV) reached 10.03%. On January 23, E Fund announced that due to significant price fluctuations in the secondary market trading of E Fund US 50 ETF, the fund will be suspended from trading starting from the market open on January 23 until 10:30 on the same day, with trading resuming at 10:30 on January 23. It is worth noting that E Fund US 50 ETF had already issued a miniscale fund warning notice two weeks ago, and the latest scale is still below 50 million yuan. If the fund's scale remains below 50 million yuan by early February, it will be liquidated due to triggering contract clauses. E Fund Fund reminds investors to pay attention to the related risks. Recently, overseas ETF funds have attracted more attention from domestic investors. Earlier, the Nikkei ETF continued to rise despite its high premium, igniting enthusiasm for overseas ETF investments. In addition to US 50 ETF, many other cross-border ETFs have also frequently warned of high premium risks. For example, from January 6th to 19th, Huaxia Fund issued 7 risk warning notices in a row, stating that its Huaxia Nomura Nikkei 225 ETF was trading significantly higher than its net asset value (IOPV) with a large premium. Investors are advised to pay attention to the risk of premium in secondary market trading prices, as blind investment may lead to significant losses. To protect investors' interests, Huaxia Nomura Nikkei 225 ETF was suspended from trading for three consecutive days from January 17th to 19th, starting from the market open until 10:30 on the same day. With the increase in trading activity, cross-border ETFs have had a total net purchase of 11.667 billion shares since the beginning of the year, with a total fund size of 441.688 billion shares. Among them, CSOP Nasdaq 100 Technology ETF, Huatai Bairen Hang Seng Technology ETF, and Bosera S&P 500 ETF have been more popular in net purchases. As of now, the latest size of cross-border ETFs is 260.983 billion yuan. In the view of industry insiders, the frequent occurrence of high premiums in many cross-border ETFs may be related to the restrictions on QDII quotas. According to the latest data from the State Administration of Foreign Exchange, by the end of last year, the approved quota for Qualified Domestic Institutional Investors (QDII) in securities was $90.55 billion, with no increase in the approval quota since August last year.