The price increase of Polkadot (DOT) over the past 24 hours and week suggests a positive short-term momentum, which could attract more investors. However, the decrease in trading volume might indicate a potential slowdown in trading activity or consolidation. The increase in circulating supply could have a dilutive effect on the price, but the market cap ranking indicates a strong position in the market. Overall, the positive price movement is likely to have a favorable impact on DOTUSD in the short term, but investors should be cautious about the decreased trading volume.