现货白银涨2.84%，报77.4269美元/盎司

Group 1 - The core viewpoint of the articles highlights the fluctuations in precious metal prices, particularly silver, platinum, and palladium, with specific percentage changes noted for each metal [1] - Spot silver increased by 2.84% to $77.4269 per ounce, while experiencing a cumulative decline of 0.50% for the week [1] - COMEX silver futures rose by 1.98% to $77.180 per ounce, with a weekly increase of 0.45% [1] - Spot platinum saw a rise of 3.11% to $2067.45 per ounce, but recorded a weekly decline of 1.74% [1] - Spot palladium increased by 4.53% to $1696.15 per ounce, with a weekly drop of 0.67% [1] - COMEX copper futures experienced a slight increase of 0.02% to $5.8465 per pound, with a cumulative decline of 1.61% for the week [1]