TRADING DAY-Dealing with the US downgrade

By Lewis KrauskopfNEW YORK, May 19 (Reuters) - TRADING DAYMaking sense of the forces driving global marketsBy Lewis Krauskopf, Markets CorrespondentThe Moody's downgrade of the U.S. credit rating rippled through markets on Monday and put fresh focus on the nation's fiscal outlook. Long-dated Treasury yields rose, the dollar fell, while stocks edged higher after rebounding from sharp declines early in the session.Jamie is enjoying some well-deserved time off, but check out his latest column examining Federal Reserve Chair Jerome Powell's legacy as the central bank prepares to release its new review later this year.Today's Key Market MovesLong-dated U.S. Treasury yields climb, with the 30-year yield hitting an 18-month high and breaking above 5% during the day, while benchmark 10-year yields also rise, at 4.46% late on MondayU.S. stocks erase early-session losses, S&P 500 ends up 0.1%, Dow gains 0.3%Dollar weakens against key rival currenciesOil prices settle modestly higher as signs of a breakdown in U.S. talks with Iran over its nuclear program offset pressure from the Moody's downgrade of the U.S. credit ratingGold prices firm, boosted by a softer dollar and safe-haven demandToday's Key ReadsMoody's downgrade intensifies investor worry about US fiscal pathThe 'triple A' sovereign bond club has shrunkUndimmed US 'exceptionalism' seems improbableRepublicans hope to nudge Trump tax cuts toward passage despite divisionsHow Trump’s crypto business partners left their old clients in the lurchDealing with the US downgradeThe landmark downgrade of the U.S. sovereign credit rating dominated markets on Monday, the first full trading day since Moody's Investors Service cut the country's pristine rating late on Friday.The move by Moody's to cut the "Aaa" rating for the U.S. rippled through Treasury markets, with the decision drawing attention to the country's deteriorating fiscal outlook. The ratings agency cited concerns about the nation's growing $36 trillion debt pile.Longer-dated Treasury yields climbed. The 30-year yield initially broke above 5% and hit an 18-month high. The yield on the benchmark 10-year Treasury also rose, touching a one-month high of 4.56% before edging back below 4.5%.The dollar weakened broadly on Monday, with the greenback hitting a more than one-week low against a basket of currencies.While the timing of the downgrade caught some investors off guard, many nonetheless said the decision was not a shock. Moody's was the last of the three major credit agencies to downgrade the U.S. rating, with Standard & Poor's doing so after the 2011 debt ceiling crisis, and Fitch downgrading the U.S. in 2023.After slumping to start Monday's session, U.S. stocks largely shrugged off the news. The benchmark S&P 500 ended with a slim gain after initially falling 1%.The downgrade did not appear to significantly dampen the mood on Wall Street, which has improved dramatically. Optimism that worst-case trade scenarios will not come to pass -- especially following a U.S.-China trade truce -- is helping a torrid rebound for equities over the past few weeks. The S&P 500 is within 3% of its all-time high after sliding to the brink of a bear market in early April.The fiscal issues facing the U.S. will remain in the spotlight this week, as lawmakers debate a sweeping tax bill. Republicans who control the House of Representatives will try to nudge President Donald Trump's bill toward passage this week, despite a running battle over spending cuts and tax breaks.Trade continued to be a dominant topic for investors. Treasury Secretary Scott Bessent said in television interviews over the weekend that Trump will impose tariffs at the rate he threatened last month on trading partners that do not negotiate in "good faith" on deals.It's a slow week for U.S. economic data, but investors in the coming days will have quarterly earnings reports from a number of major U.S. retailers to chew on.What could move markets tomorrow?Home Depot earningsPalo Alto Networks earningsG7 finance leaders meetingSeveral Federal Reserve speakers expected, including Fed Bank of St. Louis President Alberto Musalem