By Jamie McGeeverORLANDO, Florida, May 28 (Reuters) - TRADING DAYMaking sense of the forces driving global marketsBy Jamie McGeever, Markets ColumnistHawkish Fed minutesA day of drift - stocks lower and bond yields higher - was the hallmark of global markets on Wednesday as investors, in the absence of major fresh news on tariffs or developments in long-dated bonds, waited for Nvidia's results after the U.S. close.In my column today I look at why the United States may follow Japan in looking to shorten the maturity of its debt profile, as investors turn increasingly reluctant to hold long-dated bonds. More on that below, but first, a roundup of the main market moves.If you have more time to read, here are a few articles I recommend to help you make sense of what happened in markets today.<ol><li>Fed minutes saw rising inflation, jobless risks as of May meeting</li><li>Japan's quick-fix for bond markets sets a global test case</li><li>Demand at Japan's 40-year bond auction sinks as fiscal doubts prevail</li><li>Lagarde's euro 'battle cry' emphasizes EU cash need: Mike Dolan</li><li>ECB's Lagarde determined to complete her term, spokesperson says </li></ol>Today's Key Market Moves<ul><li>Wall Street closes in the red, the S&amp;P 500 and Dow off 0.6% and the Nasdaq down 0.5%, tracking similar-sized losses in Europe.</li><li>Nvidia shares rose nearly 4% in after-hours trading following the chipmaker's earnings and outlook.</li><li>U.S. Treasury yields rise, by as much as 5 bps at the longer end, bear-steepening the curve. A record $70 billion sale of 5-year notes goes well, and earlier, Japan's 40-year yield rose after a weak auction.</li><li>Brazil's real is one of the biggest movers in FX, falling 1% back through 5.70 per dollar.</li><li>Oil rises more than 1% on supply concerns as OPEC+ agreed to leave its output policy unchanged and as the U.S. barred Chevron from exporting Venezuelan crude.</li></ul>Investors shrug off Nvidia cautionNvidia on Wednesday was the last of the U.S. 'Magnificent Seven' tech giants to report earnings. It announced record quarterly revenue in the first quarter of fiscal year 2026 but warned that tighter U.S. curbs on exports of its AI chips to key semiconductor market China will hit second quarter revenue.Investors cheered the news though, sending shares up as much as 4% immediately after the release.The relationship between Nvidia's share price and its long-term revenue outlook has been tight, and both were near recent highs before Wednesday's results. Nvidia said on Wednesday it expects revenue this quarter of around $45 billion, almost $1 billion below analysts' average estimate.As Deutsche Bank's Jim Reid pointed out earlier on Wednesday, there is still a &#34;significant growth runway&#34; required to reach the current consensus for fiscal year 2030 of around $375 billion, underlining the volatile nature of the stock.Indeed, although U.S. 'Big Tech' has taken a back seat to trade wars, U.S. fiscal concerns and trouble at the long end of global bond markets as the main drivers of investor sentiment recently, Nvidia shares haven't stood still - since the market low on April 7, they have rebounded 50%, outperforming the Roundhill 'Magnificent Seven' ETF and broader Nasdaq.The 'Mag 7' shares account for almost a third of the entire S&amp;P 500 market cap, less than the peak of 35% late last year but up from the April low and still an extraordinarily high concentration of wealth in so few stocks. Big Tech has been quiet lately, but that's unlikely to last.The other big focus for investors in the U.S. session was the minutes of the Federal Reserve's May 6-7 policy meeting. There is usually something for everyone in these releases, but if there is one indication of where policymakers are leaning amid the fog of tariff uncertainty it may be this: &#34;inflation&#34; was mentioned 85 times, while &#34;employment&#34; and &#34;labor market&#34; were mentioned 23 times and 16 times, respectively.Looking ahead to Thursday, investors in Asia will react to Nvidia's earnings and guidance from after the U.S. closing bell the day before. Other highlights should be an expected interest rate cut from the Bank of Korea, revised U.S. GDP figures, and a $44 billion sale of 7-year U.S. Treasury bonds.Pressure on U.S. to follow Japan in debt profile rethinkIn the face off between heavily indebted developed economies and increasingly wary investors, Japan has blinked first, announcing that it will reconsider its debt profile strategy amid plunging demand for long-dated bonds. The U.S. could soon follow.Japan has the second-longest debt maturity profile of the G7 nations, with an average of around 9 years. Decades of ultra-low policy rates allowed Tokyo to borrow huge amounts at very low cost across the Japanese Government Bond yield curve.But in recent weeks, 30- and 40-year yields have soared to record highs, as appetite for long-dated paper at JGB auctions has dried up, a one-two punch that has forced officials to consider reducing issuance of long-term bonds in favor of short-dated debt.Many of the debt pressures bearing down on Tokyo are also being felt in Washington.The U.S. no longer boasts a triple-A credit rating, following the downgrade from Moody's earlier this month, and the non-partisan Congressional Budget Office projects federal debt held by the public will rise to a record 118.5% of GDP over the next decade from 97.8% last year. Net interest payments will rise to 4.1% of GDP from 3.1%, it predicts.Finally, there is Trump's tax-cut bill, which is projected to lump $3.8 trillion onto the federal debt over the next decade, according to the CBO.All this is creating understandable unease among investors, and even though foreign demand at bill auctions has remained high, on average, demand at bond auctions is the lowest in years. The Treasury may be forced to grab a page out of Japan's recent playbook and shorten its maturity profile.WAMThe U.S. has the shortest 'weighted average maturity' (WAM) of all G7 countries at 71.7 months, according to the Treasury. That's due to a mix of factors, including rising deficits, Fed holdings of longer-dated bonds, and high liquidity and demand at the short end of the curve.But this figure has rarely been higher on its own terms. While the WAM reached a record 75 months briefly in 2023 and was elevated during the post-pandemic period, it has otherwise rarely exceeded 70 months. Indeed, the average going back to 1980 is 61.3 months.Shifts in the Treasury's WAM over the past half century have largely been driven by the interest rate environment, economic and financial crises and investor preference. While today's mix of market, economic and geopolitical trends is unique, it doesn't point to strengthening investor demand for long-dated bonds.The decades before the pandemic – the period known as the 'Great Moderation' – were generally marked by falling interest rates, flattening yield curves, and weak inflation. That era is over, or at least that's the growing consensus among investors and policymakers.This largely reflects the belief that inflation pressures in the coming decades will be higher than those seen during the 'Great Moderation' – particularly given the move toward high tariffs and protectionism – meaning interest rates are likely to remain 'higher for longer'.At the same time, America's apparent move toward isolationism and increased political volatility is apt to make global investors consider reducing their elevated exposure to dollar-denominated assets. That could make it harder for the Treasury to borrow long term at acceptable rates.PRESSURE POINTSThese are broad assumptions, of course, and there are many moving parts. A sharp economic slowdown or recession could flatten the yield curve and spark an increase in longer-term issuance.But the curve is currently steepening, and the U.S. 'term premium' - the risk premium investors demand for lending 'long' to Treasury instead of rolling over 'short' loans - is the highest in over a decade and rising.This creates two problems. First, the Treasury may prefer to borrow longer term but not if yields are prohibitively high.Second, even though the U.S. can borrow more cheaply at the short end when the curve is steepening, this increases the 'rollover risk', meaning the government becomes more vulnerable to sudden moves in interest rates.T-bills' 22% share of overall outstanding debt is already above the Treasury Borrowing Advisory Committee's recommended 15-20% share, but it's hard to see that coming down much any time soon. Morgan Stanley analysts earlier this month outlined a &#34;thought experiment&#34; whereby low demand for notes and bonds could see the share of bills approach 30% by 2027.Ultimately, Treasury supply will largely depend on investor demand. If primary dealers indicate a preference for shorter-dated bonds, the 'WAM' will probably fall. Japan won't be the only developed economy rethinking its onerous borrowing plans. What could move markets tomorrow?<ul><li>Reaction to Nvidia earnings</li><li>South Korea's interest rate decision</li><li>U.S. GDP, PCE inflation (Q1, second estimate)</li><li>U.S. weekly jobless claims</li><li>U.S. 7-year Treasury note auction</li><li>Several Fed officials speak at various events. They are: Richmond Fed President Thomas Barkin, Chicago Fed President Austan Goolsbee, Fed Governor Adriana Kugler, and San Francisco Fed President Mary Daly.</li></ul>

NVDA

On May 28, global markets experienced a day of drift with stocks lower and bond yields higher as investors awaited Nvidia's earnings report. Nvidia reported record quarterly revenue but warned of tighter U.S. export curbs affecting future revenue, leading to a 4% rise in its shares post-announcement. The Federal Reserve's minutes indicated rising inflation concerns, while Japan's bond market faced challenges, prompting discussions on debt profile strategies. Key market moves included declines in the S&P 500 and Dow, and a rise in oil prices due to supply concerns.

- Global markets experienced a drift with lower stocks and higher bond yields as investors awaited Nvidia's earnings report.  
- The U.S. may consider shortening its debt maturity profile, similar to Japan, due to rising yields and declining demand for long-dated bonds, amid concerns over federal debt projected to reach 118.5% of GDP.  
- Key upcoming events include reactions to Nvidia's earnings, South Korea's interest rate decision, and U.S. GDP figures, which could influence market movements.

TRADING DAY-Investors shrug off Nvidia caution