APT Electronics Co., Ltd.-H Shares(02551.HK) +0.010 (+0.298%) , which will be listed tomorrow, opened up 49.6% to $5.4 on gray market. Peaking/ bottoming at $5.4/3.83, it closed at $4.08, up 13% or $0.47 from the listing price, on volume of 9.8 million shares and turnover of $40.8 million, according to PhillipMart data. Excluding handling fee, the book gain was $470 per board lot size of 1,000 shares.APT Electronics Co., Ltd.-H Shares(02551.HK) +0.010 (+0.298%) , which will be listed tomorrow, opened up 2.5% to $3.7 on gray market. Peaking/ bottoming at $6.58/3.7, it closed at $4.16, up 15.2% or $0.55 from the listing price, on volume of 6.13 million shares and turnover of $27.68 million, according to Futu data. Excluding handling fee, the book gain was $550 per board lot size of 1,000 shares.(HK stocks quote is delayed for at least 15 mins.)Related NewsHSBC Research: HK to Become Gateway for CN Households to Global/ Regional Investments