National Grid stock heads into the open after a 4.3% jump

At the close on September 17, 2026, National Grid stock finished at GBX 1,157.50 on the London Stock Exchange, up 4.3 percent. National Grid stock outperformed the FTSE 100 as investors reacted to the Bank of England holding interest rates steady.

At the close on September 17, 2026, National Grid stock ended at GBX 1,157.50 on the London Stock Exchange, up 4.3 percent from the prior session in a strong move that took the shares near their recent highs. The advance outpaced the broader FTSE 100 index, which also rallied after the Bank of England left interest rates unchanged, according to a market wrap from Sharecast. Today, investors focus on the domestic demand backdrop and potential regulatory updates that could influence National Grid's returns.

September 17, 2026 in numbers

National Grid plc (ISIN GB00BDR05C01, LSE: NG.) closed on September 17, 2026 at GBX 1,157.50, up 4.28 percent on the day per the London close data reported by Sharecast. In that session, the shares were among the leading risers in the FTSE 100, with the closing price sitting comfortably between the intraday low and high reported by exchange data and remaining within the stock's 52-week trading range. The move contrasted with more muted performance in prior sessions of the week, underscoring how sensitive regulated utilities can be to interest-rate expectations.

According to the same London market wrap from Sharecast, the Bank of England decided on September 17, 2026 to keep its benchmark interest rate unchanged, which supported interest-rate-sensitive stocks including National Grid. Lower-for-longer or steady rates tend to make the relatively predictable cash flows of grid operators more attractive versus bonds, and the strong percentage gain for National Grid compared with the broader FTSE 100 highlighted that effect in the last session.

Rate and policy signals in focus today

Heading into today, National Grid is set to trade against a backdrop shaped by the Bank of England's latest decision and any follow-up commentary on inflation and growth, as reported by Sharecast. Investors will be watching for further economic data releases and regulatory discussions affecting UK energy infrastructure, which can influence allowed returns and investment plans for grid operators such as National Grid. Any new signals on capital spending frameworks, price controls or government policy toward energy transition could therefore be relevant to how the stock trades in the upcoming session.