NY -- Standard&Poor's CreditWire 8/8/96 -- Standard&Poor's today has raised its long-term counterparty ratings on HSBC Americas Inc. and Marine Midland Bank to single-`A' from single-`A'-minus, and the short-term counterparty ratings to `A-1' from `A-2'. The subordinated debt ratings have been raised to single-`A'-minus from triple-`B'-plus, and HSBC Americas' commercial paper rating has been raised to `A-1' from `A-2'. Marine Midland's CD rating has been raised to single-`A'/`A-1' from single-`A'-minus/`A-2'. Also, Standard&Poor's has assigned its preliminary single-`A' senior debt, preliminary single-`A'-minus subordinated debt, and preliminary triple- `B'-plus preferred stock ratings on HSBC America's recently filed shelf. The outlooks have been revised to stable from positive. The upgrade reflects the improved financial performance of HSBC