Biogen Inc. (BIIB) Stock Price Today
Biogen Inc. Price Chart (BIIB)
Loading the BIIB chart…
Daily candles from the exchange.
Biogen Inc. (BIIB) Stock Price Price Today
The BIIB stock price today is $243.1, up 4.12% on the day. Biogen Inc. is listed on NASDAQ in United States, and the latest session we have is October 20, 2026.
Prices are delayed quotes for information only and are not financial advice.
BIIB Recent Prices
| Date | Open | High | Low | Close | Change | Volume |
|---|---|---|---|---|---|---|
| 2026-10-20 | $236.79 | $244.65 | $236.24 | $243.10 | 4.12% | 1,491,975 |
| 2026-10-19 | $231.81 | $236.00 | $231.04 | $233.48 | 0.36% | 949,700 |
| 2026-10-16 | $235.75 | $236.87 | $232.36 | $232.65 | 1.15% | 1,462,600 |
| 2026-10-15 | $236.46 | $240.99 | $235.22 | $235.35 | 1.08% | 1,572,400 |
| 2026-10-14 | $228.99 | $234.20 | $228.00 | $232.83 | 1.72% | 1,947,100 |
| 2026-10-13 | $230.34 | $231.04 | $226.71 | $228.90 | 0.22% | 1,049,100 |
| 2026-10-12 | $233.98 | $238.24 | $229.00 | $229.41 | 1.64% | 1,461,700 |
| 2026-10-09 | $220.62 | $227.20 | $219.23 | $225.71 | 3.33% | 815,000 |
| 2026-10-08 | $220.15 | $223.09 | $215.73 | $218.43 | 1.67% | 1,339,000 |
| 2026-10-07 | $222.93 | $228.00 | $221.40 | $222.15 | 0.33% | 1,298,100 |
BIIB in the news
- Biogen Inc. (BIIB) closes at a 52-week high of $243.1020 October 2026 · Its third new 52-week high in 5 sessions. Up 7.9% over 20 sessions.+4.1%
Frequently asked questions
What is the BIIB stock price today?
The BIIB stock price today is $243.1 on NASDAQ, the latest price we have, from the 2026-10-20 session. Biogen Inc. trades in USD.
Is BIIB stock up or down today?
Biogen Inc. (BIIB) is up 4.12% compared with the previous close of $233.48.
What was the BIIB closing price yesterday?
The previous close of BIIB was $233.48 (October 19, 2026).
What is the 52-week high and low of BIIB?
Over the past year BIIB has traded between $138 and $244.65. The latest session's range was $236.24 to $244.65.
What is the trading volume of BIIB?
1,491,975 shares of BIIB traded in the latest session.
Where does this BIIB price come from?
Stock prices and volumes from Yahoo Finance. These are delayed quotes: during trading they can lag the exchange by 15 minutes or more, and they are not a live feed.
More: BIIB price history · NASDAQ top gainers and losers today · all United States stocks (A–Z) · United States stock market today · stock markets by country
Investing in United States: guides
- ADRs and GDRs explainedAn ADR is a dollar-priced certificate for shares of a foreign company, traded on a US exchange. How ADRs and GDRs work, their levels, fees and risks.
- How to invest in US stocks from abroadBuying US shares from abroad: the broker check, currency costs, withholding tax on dividends, the forms to file and the risks to weigh.
- How to read a stock chartA step-by-step guide to reading a stock chart: what a candle shows, how to use volume, how to choose a time frame, and what a chart cannot tell you.
- Trading volume explainedTrading volume is how many shares change hands in a period. What it tells you about conviction and liquidity, and how to read it with price.
Learn to read and trade it
- How to buy stocksOpen an account, pick the order type and set your exit, step by step.
- How to trade stocksA practical process from watchlist to exit.
- Candlestick patterns cheat sheetRead the candles on the chart above.
- Stop loss strategyWhere to put a stop and which types to use.
- Position sizing formulaHow much to risk on one trade.
- How to use TradzyGrade a setup, plan the trade and practise it with paper money.