Manitowoc, Gilead, Juno, Eclipse Resources and Athersys are big market movers

Stocks that moved substantially or traded heavily Monday on the New York Stock Exchange and the Nasdaq Stock Market:

NYSE

The Manitowoc Co., up $1.87 to $22.79

Activist investor Carl Icahn has taken a 7.77 percent stake in the crane maker and is pushing it to split into two.

Eclipse Resources Corp., down 16 cents to $7.19

The oil and gas company will sell 62.5 million shares for $440 million and approved a $640 million capital budget.

National Bank of Greece SA, down 16 cents to $1.82

Greece is holding general elections, raising concerns its bailout program and its financial future.

American Apparel Inc., up 2 cents to $1.08

The clothing retailer's board is being urged to explore strategic options, according to media reports.

Walgreen Co.

The drugstore chain's shareholders approved spending $16 billion to complete a deal for Alliance Boots.

Nasdaq

Gilead Sciences Inc., up $3.51 to $97.30

The biotechnology company expanded an agreement for developing an HIV treatment with Johnson & Johnson.

Juno Therapeutics Inc., up $5.48 to $54.21

The biotechnology company bought Opus Bio for $20 million in cash and 1.6 million shares.

Athersys Inc., up 11 cents to $1.41

The biotechnology company finished enrolling patients in a clinical trial of a therapy for stroke patients.