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WFRBS Commercial Mortgage Trust 2011-C4 -- Moody's affirms nine and downgrades three classes of WFRBS 2011-C4

The ratings on eight principal and interest (P&I) classes were affirmed because the transaction's key metrics, including Moody's loan-to-value (LTV) ratio, Moody's stressed debt service coverage ratio (DSCR) and the transaction's Herfindahl Index (Herf), are within acceptable ranges. Moody's rating action reflects a base expected loss of 3.7% of the current pooled balance, compared to 3.6% at Moody's last review. Moody's base expected loss plus realized losses is now 2.5% of the original pooled balance, compared to 2.6% at the last review.