Shares in electronics manufacturer Shenzhen SEG rose 11.3 per cent on their debut on the Shenzhen exchange yesterday, with domestic investors buying amid speculation there would soon be a cut in interest rates. The company's B shares, which foreign investors may own, rose 27 HK cents to HK$2.66 on trading of 5.8 million shares. Invesco Asia fund manager Adrian Au said: 'The underwriters sold most of the stock to local investors because international marketing was not that successful.'