Alkermes plc (ALKS) delivered a return of 53.39% over the past year. Since ALKS does not currently pay dividends, the total return equals the price-only return.

A $10,000 investment in Alkermes plc one year ago would be worth $15,339 today, representing a gain of $5,339.

Alkermes plc (ALKS) does not currently pay dividends. Many growth-focused companies reinvest profits back into the business rather than distributing them as dividends. For ALKS, the total return equals the price-only return.

Yes, Alkermes plc (ALKS) outperformed the S&P 500 by 28.40 percentage points over the past year. ALKS delivered a total return of 53.39%, compared to the S&P 500's 24.99%. This 28.40pp alpha means investors in ALKS earned more than a passive S&P 500 index fund.

Alkermes plc (ALKS) experienced a maximum drawdown of -22.20% over the past year, declining from its peak on 2026-02-02 to its trough on 2026-03-18. The stock recovered to its prior peak by 2026-03-31. Maximum drawdown measures the worst peak-to-trough decline and is an important risk metric for investors.

Here are Alkermes plc (ALKS)'s long-term returns with dividends reinvested. Over 10 years, the total return is 7.4% (0.7% CAGR) — $10,000 would have grown to $10,740. Over 20 years: 149.0% total return (4.7% CAGR) — $10,000 → $24,897. Over 30 years: 619.8% total return (6.8% CAGR) — $10,000 → $71,984. Long-term investors benefit from compounding: dividends buy additional shares, which generate their own dividends, creating an exponential growth effect.

Alkermes plc's best calendar year was 1996 with a total return of 210.0%. Its worst year was 2002 with a total return of -75.7%. This range shows the volatility investors should expect — the difference between the best and worst year is 285.7 percentage points.