This word is acceptable for play in the US & UK dictionaries that are being used in the following games:

• Lexulous
• Wordscraper
• Wordosaur

n. Plural form of spreader.

"Finally, debit call spreaders picked up approximately 1,700 calls at the March 2011 $24 strike for an average premium of $1.57 each, and sold about the same number of calls up at the March 2011 $28 strike at an average premium of $0.48 apiece."