UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
Notice of Effectiveness
Effectiveness Date: August 30, 2018
Accession Number: 0001193125-12-355073
Submission Type: POS AM
CIK: 0001261379
Company Name: Frontier Funds
File Number: 333-155800
CIK: 0001389127
Company Name: LONG ONLY COMMODITY SERIES, a series of The Frontier Fund
File Number: 333-155800-04
CIK: 0001389129
Company Name: MANAGED FUTURES INDEX SERIES, a series of The Frontier Fund
File Number: 333-155800-03