Injured bird: Twitter dove 19% to $31.44 Thursday after reporting disappointing third-quarter profit and revenue and giving investors a weak revenue forecast for the fourth quarter. Shares closed Friday at $30.30.
Charging ahead: Tesla surged 14.7% to $292.30 Thursday after the electric carmaker surprised Wall Street with a solid profit. Analysts expected the company to report another loss as it struggles to increase sales. The company took several cost-cutting measures, including layoffs, during the quarter. Shares closed the week at $328.13.
Gaining altitude: Solid profits helped lift Southwest Airlines 5.4% higher to $56.12 Thursday. It reported strong travel demand and rising ticket prices. Shares closed Friday at $56.74.
Cautious customers: Texas Instruments fell 6.4% to $120.39 Tuesday after saying its customers have become far more cautious, with trade tensions a big factor. It also trimmed its outlook. Shares closed the week at $120.51.
Healthy profit: Biogen soared 26.1% to $281.87 Tuesday after the biotechnology giant handily beat Wall Street's third-quarter forecasts and said it will ask regulators to approve a treatment for Alzheimer's. Shares closed Friday at $288.04.
Turbulent stock: Boeing fell 3.8% to $330.85 Monday as Congress is ramps up scrutiny of its Max 737 aircraft. Its CEO is scheduled to testify to a House committee on Oct. 30. Shares closed the week at $339.83.
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Surging auto insurance rates squeeze drivers, fuel inflation
