US STOCKS-Wall St slumps, Nasdaq under 50-day moving average
* Ukraine conflict continues, Russia seizes marine base
* Weak China data raises hopes for stimulus
* Nasdaq hit as trading favorites like Netflix, Tesla sink
* Herbalife rallies; Icahn to get more reps on board
* Indexes down: Dow 0.3 pct, S&P 0.7 pct, Nasdaq 1.5 pct (Updates prices)
By Ryan Vlastelica
NEW YORK, March 24 (Reuters) - U.S. stocks fell sharply on Monday, with the Nasdaq suffering its biggest daily percentage decline since early February, as the ongoing crisis in Ukraine pushed investors to take profits in some of the market's biggest trading favorites.
The Nasdaq's losses took it below its 50-day moving average, a sign of weakening near-term momentum, and almost 80 percent of issues traded on the exchange were lower. About two-thirds of New York Stock Exchange-listed shares were lower, and eight of the ten S&P 500 sectors dropped on the day.
Futures had been higher throughout the premarket session, lifted by hopes that China would take stimulative measures to support its economy, but indexes turned lower early, with the Nasdaq especially hit hard by steep losses in some of its biggest recent outperformers. Netflix Inc dropped 6.7 percent to $378.60, Tesla Motors shed 5.5 percent to $216.35 and Facebook Inc slid 4.4 percent to $64.25. Continuación...