US STOCKS-Wall St falls as Morgan Stanley results disappoint
* Morgan Stanley second biggest drag on S&P 500
* Weight Watchers soars after Oprah takes stake
* China Q3 GDP data better than expected
* Indexes down: Dow 0.35 pct, S&P 0.37 pct, Nasdaq 0.23 pct (Updates to open)
By Abhiram Nandakumar
Oct 19 (Reuters) - U.S. stocks opened lower on Monday after a swathe of weak results led by Morgan Stanley and Halliburton.
Morgan Stanley's shares fell 6.2 percent to $31.83 after the bank's profit fell for the second straight quarter. The stock was the second-largest drag on the S&P 500 index.
The bank's results capped mostly downbeat quarterly results from major U.S. banks with struggling trading businesses.
Citigroup, JPMorgan, Wells Fargo slipped about half a percent. Goldman fell about 1 percent to $183.47 and was the biggest drag on the Dow Jones industrial average. Continuación...