...Very strong competitive position as the sole clearinghouse for cash equities, exchange trade funds, and municipal and corporate bonds in the U.S. National Securities Clearing Corp. (NSCC) is an effective monopoly in clearing cash equities, exchange traded funds, and municipal and corporate bonds in the U.S. This supports the strength of the business risk profile. NSCC has material clearing risks. Considerable losses for the clearinghouse could arise if resources within the waterfall (margins, assessment powers) are insufficient to absorb losses stemming from the liquidation of a defaulting clearing member's portfolio. We believe, however, that NSCC benefits from strong risk management controls and robust financial safeguards. NSCC is also exposed to liquidity risk should one or several clearing members default. Potential liquidity uses in a stress scenario whereby one or several clearing members default jointly are the highest at a time close to the expiration of single-name options (third...