Stocks that are trading heavily or have substantial price changes on Monday:
Archer Daniels Midland Co. (ADM), down $15.09 to $53.10.
An accounting investigation is under way at the agribusiness giant and its top financial executive has been placed on administrative leave.
Macy's Inc. (M), up 37 cents to $18.
The department store operator rejected a buyout offer from Arkhouse Management.
SolarEdge Technologies Inc. (SEDG), up $2.03 to $71.15.
The photovoltaic products maker is cutting 16% of its global workforce.
Sunoco LP (SUN), down $3.46 to $56.
The Dallas-based chain of over 5,000 gas stations is buying pipeline operator NuStar Energy.
Zscaler Inc. (ZS), up $7.75 to $239.05.
The cloud-based information security provider is reportedly in talks to buy Avalor.
Natera Inc. (NTRA), up 30 cents to $66.93.
The genetic testing company is buying prenatal screening and other reproductive health assets from Invitae.
Gilead Sciences Inc. (GILD), down $8.80 to $78.49.
The biopharmaceutical company gave investors a discouraging update on a potential lung cancer treatment.
Northwest Bancshares Inc. (NWBI), up 32 cents to $12.44.
The owner of Pennsylvania-based Northwest Savings Bank reported encouraging fourth-quarter results.