The iShares Russell 2000 ETF ($IWM) has experienced a significant rally this week, rising approximately 3.6%. The ETF, which tracks small-cap stocks, is nearing the $240 mark after starting the week around $234 and reaching $237 today. Traders have noted the strong performance, with $234 call options increasing from $3.70 to $7.50. The ETF is up almost 1% today and is on track for a 'perfect week,' having risen every day. This performance has sparked speculation about new all-time highs by the end of the year.