--- title: "Stock Market Today: SPY, QQQ Mixed as Bessent Boosts Bond Buybacks; U.S.-Canada Advance Toward Trade Deal" type: "News" locale: "en" url: "https://longbridge.com/en/news/296397918.md" description: "US markets showed mixed performance as Treasury Secretary Bessent announced plans to double long-term bond buybacks, causing yields to drop and easing pressure on stocks. Meanwhile, US-Canada trade negotiations advanced with a tariff delay, potentially including the Keystone XL Pipeline revival. In corporate news, Moderna surged on strong melanoma vaccine trial results, while AI stocks faced pressure despite Marvell's deal with Alphabet. Crypto stocks rallied alongside Bitcoin ahead of a White House regulatory meeting." datetime: "2026-08-19T20:24:08.000Z" locales: - [zh-CN](https://longbridge.com/zh-CN/news/296397918.md) - [en](https://longbridge.com/en/news/296397918.md) - [zh-HK](https://longbridge.com/zh-HK/news/296397918.md) generator: "portal-rs" --- # Stock Market Today: SPY, QQQ Mixed as Bessent Boosts Bond Buybacks; U.S.-Canada Advance Toward Trade Deal It was a mixed day for the S&P 500 ETF (SPY) and the Nasdaq 100 ETF (QQQ), with the former closing in the green and the latter finishing in negative territory. ### Summer Sale - Claim 70% Off TipRanks - Unlock powerful investing tools with TipRanks Premium to make smarter, more confident investment decisions - Subscribe to TipRanks Smart Investor Newsletter, and discover new investing opportunities with data-backed stock picks ## **News That Moved the Stock Market Today** - Treasury Secretary Scott Bessent's latest plan to calm yields is to at least double U.S. Treasury long-term bond buybacks to $4 billion from $2 billion. Earlier this week, the 30-year Treasury yield rose to its highest level since 2007, pressuring the stock market. With higher yields, bonds become more attractive relative to stocks and corporate borrowing costs increase. - Following the announcement, the 10-year Treasury yield fell 5.3 basis points (bps) to 4.653%, while the 30-year yield dropped 9 bps to 5.195%. - Elsewhere, President Trump said Tuesday evening that he would delay a 50% tariff rate on Canada for three days to allow for more negotiations. Later on, both Trump and Canadian Prime Minister Mark Carney touted progress in reaching a deal. Trump added that the deal could include the revival of the Keystone XL Pipeline, which was cancelled in 2021 due to environmental concerns. - Moderna (MRNA) skyrocketed after announcing that its mRNA-based vaccine posted strong results in a late-stage trial for melanoma, a type of skin cancer. - AI stocks continued to face pressure, with AMD (AMD), Intel (INTC), and Broadcom (AVGO) closing in the red. - Marvell (MRVL) bucked the trend after announcing it had provided Alphabet (GOOGL) with warrants to purchase 58.97 million shares of MRVL at $206.58 per share as part of a chip deal between the two tech giants. - Meta Platforms (META) rebounded, although a major lawsuit claiming that it intentionally designed Facebook and Instagram to be addictive to children remains a major headwind for the social media giant. - Cryptocurrency stocks rallied after Bitcoin (BTC-USD) rose as much as 7.7% ahead of a regulatory meeting at the White House. ### Related Stocks - [GOOGL.US](https://longbridge.com/en/quote/GOOGL.US.md) - [MRVL.US](https://longbridge.com/en/quote/MRVL.US.md) - [MARA.US](https://longbridge.com/en/quote/MARA.US.md) - [MRNA.US](https://longbridge.com/en/quote/MRNA.US.md) - [GBTC.US](https://longbridge.com/en/quote/GBTC.US.md) - [SPY.US](https://longbridge.com/en/quote/SPY.US.md) - [QID.US](https://longbridge.com/en/quote/QID.US.md) - [IBIT.US](https://longbridge.com/en/quote/IBIT.US.md) - [FBTC.US](https://longbridge.com/en/quote/FBTC.US.md) - [QQQM.US](https://longbridge.com/en/quote/QQQM.US.md) - [ARKB.US](https://longbridge.com/en/quote/ARKB.US.md) - [QQQ.US](https://longbridge.com/en/quote/QQQ.US.md) - [PSQ.US](https://longbridge.com/en/quote/PSQ.US.md) - [BITB.US](https://longbridge.com/en/quote/BITB.US.md) - [TQQQ.US](https://longbridge.com/en/quote/TQQQ.US.md) - [SQQQ.US](https://longbridge.com/en/quote/SQQQ.US.md) - [GOOG.US](https://longbridge.com/en/quote/GOOG.US.md) - [GGLL.US](https://longbridge.com/en/quote/GGLL.US.md) - [MVLL.US](https://longbridge.com/en/quote/MVLL.US.md) - [BITO.US](https://longbridge.com/en/quote/BITO.US.md) - [BRRR.US](https://longbridge.com/en/quote/BRRR.US.md) - [BTCO.US](https://longbridge.com/en/quote/BTCO.US.md) - [BTCW.US](https://longbridge.com/en/quote/BTCW.US.md) - [HODL.US](https://longbridge.com/en/quote/HODL.US.md) - [EZBC.US](https://longbridge.com/en/quote/EZBC.US.md) - [GGLS.US](https://longbridge.com/en/quote/GGLS.US.md) - [GOOW.US](https://longbridge.com/en/quote/GOOW.US.md) - [GOOY.US](https://longbridge.com/en/quote/GOOY.US.md) - [GOU.US](https://longbridge.com/en/quote/GOU.US.md) - [GOOX.US](https://longbridge.com/en/quote/GOOX.US.md) - [GOOP.US](https://longbridge.com/en/quote/GOOP.US.md) - [MAGX.US](https://longbridge.com/en/quote/MAGX.US.md) - [MRVU.US](https://longbridge.com/en/quote/MRVU.US.md) - [MRAL.US](https://longbridge.com/en/quote/MRAL.US.md) - [MARO.US](https://longbridge.com/en/quote/MARO.US.md) - [MRNX.US](https://longbridge.com/en/quote/MRNX.US.md) - [MRNY.US](https://longbridge.com/en/quote/MRNY.US.md) - [03008.HK](https://longbridge.com/en/quote/03008.HK.md) - [03042.HK](https://longbridge.com/en/quote/03042.HK.md) - [03430.HK](https://longbridge.com/en/quote/03430.HK.md) - [BTCE.DE](https://longbridge.com/en/quote/BTCE.DE.md) - [AMD.US](https://longbridge.com/en/quote/AMD.US.md) - [INTC.US](https://longbridge.com/en/quote/INTC.US.md) - [AVGO.US](https://longbridge.com/en/quote/AVGO.US.md) - [META.US](https://longbridge.com/en/quote/META.US.md) ## Related News & Research - [How to Play MRVL Stock Now as Marvell Technology Expands Its Relationship With Google](https://longbridge.com/en/news/296708030.md) - [Marvell Stock (MRVL) Prediction – Here's What to Expect from Q2 Earnings Tomorrow](https://longbridge.com/en/news/297056250.md) - [Moderna Stock (MRNA) Slides 3% on Plans for a $2B Private Placement](https://longbridge.com/en/news/297195128.md) - [Crypto slump, AI boom overshadow CZ’s bullish pitch at Hong Kong’s Bitcoin Asia](https://longbridge.com/en/news/297191248.md) - [Why Options Traders Are Betting That Marvell Technology Stock Could Soon Hit $300](https://longbridge.com/en/news/297224319.md) --- > **Disclaimer: This article is for reference only and does not constitute any investment advice.**