OSB Group (OSB) Stock Chart & Stock Price History GBX 553.50 -0.50 (-0.09%) As of 09/12/2025 11:51 AM Eastern Add Compare Share Share Chart Stock AnalysisAnalyst ForecastsChartCompetitorsDividendEarningsHeadlinesInsider TradesBuy This Stock OSB Group Stock Price Performance The OSB Group (OSB) stock chart highlights key performance trends across multiple timeframes. Over the last 12 months, the stock's price has increased 43.77%, with a year-to-date return of 36.80%. In the past month, the stock has decreased 2.21%, reflecting recent market activity. As of the latest close, OSB Group traded at GBX 553.50 with a market cap of £2.00 billion and volume of 512,650 shares. Five years ago, the stock traded at GBX 300.80, representing a 84.01% increase over that period. At the time, it had a market cap of £1.34 billion and a volume of 441,072 shares. 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Read our full terms of service and privacy policy. 5 Day Performance+2.39%1 Month Performance-2.21%3 Month Performance+11.68%Year-To-Date Performance+36.80%1 Year Performance+43.77%5 Year Performance+84.01% OSB Stock Chart for Saturday, September, 13, 2025 OSB Chart by TradingView OSB Group Stock Price History Daily Weekly Monthly Yearly Time Frame Custom Range 1 Month 3 Months 6 Months Year-to-Date 1 Year 3 Year 5 Year Time Frame Start Date End Date Export to Excel DateOpening PriceClosing PriceHighLowVolumeMarket Capitalization09/12/2025GBX 554GBX 553.50-0.09%GBX 557.50GBX 550.50512,650 shs£2.00 billion09/11/2025GBX 541.50GBX 554+2.31%GBX 554GBX 539.75807,981 shs£2.00 billion09/10/2025GBX 543.50GBX 541.50-0.37%GBX 548GBX 540.50554,490 shs£1.96 billion09/09/2025GBX 540.56GBX 543.50+0.54%GBX 545.50GBX 528.50733,809 shs£1.97 billion09/08/2025GBX 536.81GBX 540.56+0.70%GBX 543GBX 535704,399 shs£1.96 billion09/05/2025GBX 537GBX 536.81-0.04%GBX 542.50GBX 532.5035.67 million shs£1.95 billion09/04/2025GBX 531GBX 537+1.13%GBX 541GBX 5311.01 million shs£1.90 billion09/03/2025GBX 526GBX 531+0.95%GBX 534.50GBX 523.50898,084 shs£1.93 billion09/02/2025GBX 543GBX 526-3.13%GBX 547GBX 524806,719 shs£1.91 billion09/01/2025GBX 527.50GBX 543+2.94%GBX 544GBX 5251.10 million shs£1.91 billion Get the Latest News and Ratings for OSB and Related StocksEnter your email address below to receive the latest news and analysts' ratings for OSB Group and its competitors with MarketBeat's FREE daily newsletter. 08/29/2025GBX 548GBX 527.50-3.74%GBX 549GBX 527.501.81 million shs£2.02 billion08/28/2025GBX 555.50GBX 548-1.35%GBX 550GBX 541.50732,160 shs£2.02 billion08/27/2025GBX 556GBX 555.50-0.09%GBX 563GBX 548.50820,712 shs£2.05 billion08/26/2025GBX 556.50GBX 556-0.09%GBX 557.50GBX 5491.12 million shs£2.05 billion08/25/2025GBX 556.50GBX 556.50GBX 556.50GBX 542.50589,034 shs£2.06 billion08/22/2025GBX 546.50GBX 556.50+1.83%GBX 556.50GBX 542.50589,034 shs£2.06 billion08/21/2025GBX 540.49GBX 546.50+1.11%GBX 554GBX 541.50695,559 shs£2.02 billion08/20/2025GBX 546GBX 540.49-1.01%GBX 548GBX 515.502.79 million shs£2.00 billion08/19/2025GBX 553.50GBX 546-1.36%GBX 557GBX 546833,952 shs£2.02 billion08/18/2025GBX 552.26GBX 553.50+0.22%GBX 565GBX 549785,438 shs£2.04 billion08/15/2025GBX 562GBX 552.26-1.73%GBX 569.50GBX 551552,807 shs£2.04 billion08/14/2025GBX 566GBX 562-0.71%GBX 569GBX 559504,236 shs£2.08 billion08/13/2025GBX 564.69GBX 566+0.23%GBX 568.50GBX 562510,288 shs£2.09 billion08/12/2025GBX 560.08GBX 564.69+0.82%GBX 568.50GBX 560673,320 shs£2.09 billion Related Companies Paragon Banking Group Stock Chart Mortgage Advice Bureau Stock Chart LendInvest Stock Chart Phoenix Group Stock Chart St. James's Place Stock Chart M&G Stock Chart Schroders Stock Chart F&C Investment Trust Stock Chart Hargreaves Lansdown Stock Chart Investec Group Stock Chart Receive OSB Stock News and Ratings via EmailSign-up to receive the latest news and ratings for OSB Group and its competitors with MarketBeat's FREE daily newsletter. 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