The small-capitalization Russell 2000 index RUT, +2.08% just logged its first closing high in over two years, boosted by the prospects of a remedies and cures for the deadly COVID-19 pandemic that has hobbled economies and disproportionately hurt smaller companies, compared against their large-cap peers. The Russell 2000 index finished the week up over 2% on Friday, helping it score a 6.1% weekly gain, far outstripping the return for its large-cap counterparts. The S&P 500 index SPX, +1.36%, which also ended Friday the session at a record close, its first since Sept 2, booked a weekly advance of 2.2% and the Dow Jones Industrial Average DJIA, +1.37% finished with a weekly gain of 4.1%, by comparison. The last time the Russell 2000 index scored an all-time closing high was August 2018 and the last time the S&P 500 and the small-cap Russell 2000 finished at records on the same day was also 2018, according to Dow Jones Market Data. The moves for stocks this week were aided by a report by Pfizer PFE, +2.85% and its German partner BioNTech BNTX, +4.30% on Monday, which indicated that a coronavirus experimental vaccine was 90% effective, sparking hope that cures and remedies for the deadly illness may be in the offing as a resurgence of the virus is at hand.