The Nifty slipped below the rising trendline on the daily chart, suggesting a bearish trend reversal. Besides, the index has fallen below the critical near-term moving average. Now, the trend is likely to remain weak as long as the index stays below 21,550. A decisive move above 21,550 might weaken the bears; until then, bears might control the market. On the lower end, support is placed at 21,400. A drift below 21,400 might take Nifty for a revisit to 21,250-21,200.