On Monday, the three major U.S. stock indices posted collective gains. The Hang Seng Index ADR edged slightly higher, closing at 25,643.13 points on a proportional basis, representing an increase of 9.22 points or 0.04% compared to Hong Kong's market close. Large-cap blue-chip stocks showed mixed performance, with HSBC HOLDINGS closing at HK$102.909, up 1.19% from Hong Kong's close, while TENCENT closed at HK$618.732, gaining 0.20% from Hong Kong's close.