Alkermes plc (ALKS)

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The chart shows the growth of an initial investment of $10,000 in Alkermes plc, comparing it to the performance of the S&P 500 index or another benchmark. All prices have been adjusted for splits and dividends.

Alkermes plc (ALKS) has returned 26.38% so far this year and 7.09% over the past 12 months. Over the last ten years, ALKS has returned -0.09% per year, falling short of the S&P 500 Index benchmark, which averaged 12.16% annually.

Based on dividend-adjusted daily data since Jul 16, 1991, ALKS's average daily return is +0.10%, while the average monthly return is +2.26%. At this rate, your investment would double in approximately 2.6 years.

Historically, 52% of months were positive and 48% were negative. The best month was Feb 2000 with a return of +189.4%, while the worst month was Jul 2002 at -71.5%. The longest winning streak lasted 6 consecutive months, and the longest losing streak was 7 months.

On a daily basis, ALKS closed higher 47% of trading days. The best single day was Jul 27, 1995 with a return of +34.1%, while the worst single day was Jul 1, 2002 at -67.8%.

Alkermes plc has an annualized alpha of 14.88%, beta of 1.17, and R² of 0.11 versus S&P 500 Index. Calculated based on daily prices since July 17, 1991.

• This stock participated in 134.41% of S&P 500 Index downside but only 125.05% of its upside — more exposed to losses than it benefited from rallies.
• R² of 0.11 means this stock moves largely independently of S&P 500 Index — capture ratios reflect limited market correlation rather than active downside protection. Consider using a more representative benchmark.

ALKS ranks 45 for risk / return — on par with similar stocks. You're getting a typical balance of risk and reward. Not a standout, but not a red flag either — a reasonable choice if other factors align with your goals.

The table below present risk-adjusted performance metrics for Alkermes plc (ALKS) and compare them to a chosen benchmark (S&P 500 Index).

The Drawdowns chart displays portfolio losses from any high point along the way. Drawdowns are calculated considering price movements and all distributions paid, if any.

The table below displays the maximum drawdowns of the Alkermes plc. A maximum drawdown is a measure of risk, indicating the largest reduction in portfolio value due to a series of losing trades.

The maximum drawdown for the Alkermes plc was 96.14%, occurring on Jul 11, 2002. The portfolio has not yet recovered.

The current Alkermes plc drawdown is 63.94%.

The chart below shows the rolling one-month volatility.

The chart below illustrates the trends in the financial health of Alkermes plc over time, highlighting three key metrics: Total Revenue, Earnings Before Interest and Taxes (EBIT), and Net Income.

The Valuation section provides an overview of how Alkermes plc is priced in the market compared to other companies in the Biotechnology industry. It includes key financial ratios that help investors assess whether the stock is undervalued or overvalued.