The New York Mercantile Exchange, Inc. today announced margin changes for some of its natural gas swing swap futures contracts, effective at the close of business tomorrow.
Margins for the TETCO M–3 and Transco Zone 6 swing swap futures contracts will increase to $3,000 from $2,000 for clearing members, to $3,300 from $2,200 for members, and to $4,050 from $2,700 for customers.