MetaCap

AC Immune SA Stock Price History

NASDAQ: ACIUHealth CareBiotechnology: Pharmaceutical PreparationsUSD

2.50-0.05 (-1.96%)

At close: Oct 9, 4:00 PM ET · Delayed 15 min

ACIU price history at a glance

The price history for AC Immune SA (ACIU) on this page begins on September 19, 2016, when the stock closed at $15.66; it most recently closed at $2.50 on October 5, 2026. The highest price in this record is $19.97, reached on September 26, 2016; the latest close is 87.5% below that peak. Across the 9 complete calendar years in the table, ACIU finished higher in 2 and lower in 7. Its best year was 2023 (+145.1%) and its worst was 2022 (-58.8%).

Over roughly 10 years the share price changed -84.0%, a -16.7% compound annual price return (excluding dividends). In the last 12 months alone, ACIU has lost 28.2%. Prices are split-adjusted closing prices; daily open, high, low, close and volume for the past year are listed below.

Summary generated from market data by MetaCap's automated system. Methodology

Key price levels

High since 2016
$19.97
Date of high
Sep 26, 2016
Low since 2016
$1.43
Date of low
Apr 7, 2025
52-week high
$4.00
52-week low
$2.10
IPO year
2016
Last close
$2.50

ACIU returns

1 week

-8.26%

1 month

-9.42%

3 months

+4.60%

6 months

-23.78%

Year to date

-20.38%

1 year

-28.16%

3 years

-10.07%

5 years

-59.55%

ACIU price return, excluding dividends.

ACIU annual returns

Calendar-year price returns
YearYear-end closeReturn
20262.50-25.60%
20253.36+12.75%
20242.98-40.40%
20235.00+145.10%
20222.04-58.79%
20214.95-4.26%
20205.17-40.44%
20198.68-13.63%
201810.05-21.48%
201712.80-1.39%
2016*12.98-17.11%

* Partial year: the record begins after the start of 2016; return measured from the first available close.

2026 return is year to date.

ACIU daily prices (past year)

Daily open, high, low, close and volume
DateOpenHighLowCloseChange
2.552.592.482.50-1.96%
2.572.612.502.55-0.78%
2.522.592.512.57+1.98%
2.722.722.512.52-7.01%
2.682.752.652.71-0.55%
2.842.882.692.73-3.02%
2.642.842.572.81+7.25%
2.632.752.612.62+0.77%
2.652.662.562.60-0.38%
2.522.622.412.61+3.57%
2.662.662.452.52-5.26%
2.852.852.662.66-6.01%
2.902.912.672.83+3.66%
2.692.752.662.73+2.82%
2.632.722.572.66+0.95%
2.692.812.632.63-1.87%
2.712.742.662.68+1.13%
2.682.732.612.65-1.12%
2.652.702.592.68+0.75%
2.692.752.662.66-3.62%
2.702.782.682.76+2.60%
2.742.772.682.69-2.54%
2.782.812.732.76-0.72%
2.822.852.772.78-2.80%
2.912.942.822.86-2.39%
2.853.002.852.93+3.17%
2.702.872.702.84+5.97%
2.622.682.582.68+1.52%
2.672.742.612.64-0.38%
2.732.772.652.65-2.21%
2.832.912.692.71-4.91%
2.942.982.772.85-2.40%
2.852.972.852.92+2.10%
2.913.002.802.86-1.38%
2.662.952.652.90+9.85%
2.602.652.442.64+2.33%
2.602.692.572.58+0.39%
2.542.592.512.57+1.58%
2.492.572.472.53+1.61%
2.582.582.432.49-3.11%
2.592.652.552.57-1.91%
2.582.642.522.62+3.15%
2.382.702.352.54+11.40%
2.362.372.282.28-3.39%
2.362.372.302.36+1.72%
2.282.362.282.32+1.31%
2.282.372.272.29+0.88%
2.252.292.232.27+2.25%
2.242.272.182.22+1.37%
2.402.402.182.19-7.59%
2.302.412.252.37+4.41%
2.292.322.252.27-2.16%
2.312.322.242.32+0.87%
2.232.342.192.30+3.14%
2.302.322.162.23-0.45%
2.262.272.182.24-1.32%
2.272.342.202.27-1.30%
2.212.322.212.30+2.22%
2.192.262.172.25+2.27%
2.202.202.122.20+0.92%
2.352.352.162.18-7.63%
2.432.442.362.36-2.07%
2.452.512.412.41-1.63%
2.422.452.352.45+2.51%
2.602.602.392.39-8.08%
2.512.622.502.60+3.17%
2.522.592.472.52-0.79%
2.592.602.492.54+1.20%
2.512.632.472.510.00%
2.372.522.352.51+5.46%
2.342.442.152.380.00%
2.502.542.312.38-10.53%
2.592.662.532.66+3.91%
2.442.562.442.56+4.49%
2.552.552.432.45-3.54%
2.452.622.442.54+3.67%
2.492.582.442.45-2.00%
2.452.572.442.50+4.17%
2.402.432.342.40+2.56%
2.362.412.332.34-1.27%
2.372.402.312.37+1.28%
2.312.402.312.34+1.30%
2.282.362.252.31+2.21%
2.162.262.122.26+6.60%
2.222.222.102.12-6.19%
2.192.272.102.26+3.20%
2.272.282.182.19-2.67%
2.392.462.222.25-6.25%
2.412.452.372.40+0.42%
2.402.432.342.39-1.24%
2.462.472.332.42-1.63%
2.662.782.452.46-7.52%
2.732.782.652.66-3.27%
2.922.922.752.75-6.14%
2.933.032.872.930.00%
2.833.032.822.93+3.53%
2.872.912.822.83-0.70%
2.872.872.772.85-1.38%
2.822.942.752.89+2.48%
2.722.852.702.82+1.81%
2.832.902.742.77-0.72%
2.842.842.732.79-0.36%
2.862.942.752.80-1.41%
2.862.862.722.84+2.53%
2.842.862.662.77-2.12%
2.863.092.812.83-1.05%
2.943.002.802.86-2.05%
2.963.012.922.92-1.68%
3.033.102.962.97-1.33%
3.063.163.003.01-1.31%
2.923.102.923.05+2.35%
3.033.062.902.98-1.65%
3.053.152.973.03+3.41%
3.053.052.922.93-3.30%
2.903.072.903.03+6.69%
2.842.962.802.840.00%
3.003.012.842.84-4.38%
3.163.242.962.97-2.94%
2.983.102.853.06+6.62%
3.033.032.872.87-3.69%
3.003.062.912.98-1.00%
3.123.162.973.01-1.95%
3.103.162.913.07-2.23%
3.103.203.053.14-1.57%
3.313.333.193.19-3.33%
3.273.403.253.30+0.61%
3.403.443.283.28-3.53%
3.213.493.193.40+5.92%
3.293.403.113.21+3.22%
2.813.142.773.11+15.19%
2.782.852.652.70-2.17%
2.732.772.702.76-1.08%
2.802.922.762.79+1.45%
2.612.772.592.75+7.42%
2.772.802.552.56-5.19%
2.852.922.702.70-6.57%
2.902.992.852.89-1.70%
2.923.082.882.94+2.80%
2.862.892.772.86-0.69%
2.883.012.802.88+1.05%
2.923.202.842.85-3.39%
3.093.152.892.95-4.53%
3.313.433.073.09-6.93%
3.143.333.123.32+6.07%
2.983.312.973.13+3.81%
2.963.222.963.02+0.50%
3.033.263.003.00-1.96%
3.023.072.943.06+0.66%
2.883.102.813.04+6.29%
2.762.912.762.86+2.51%
2.732.822.662.79+2.20%
2.762.852.652.73-3.87%
2.882.922.662.84-2.41%
2.802.922.692.91+1.04%
2.832.912.752.88-1.71%
2.932.992.852.93-1.01%
2.752.982.662.96+7.25%
2.752.832.672.76+1.47%
2.552.732.442.72+7.51%
2.522.572.452.53+0.40%
2.532.592.502.52-0.40%
2.632.632.502.53-3.44%
2.632.752.452.62-9.97%
2.972.972.802.91-2.68%
2.973.032.922.99+2.05%
3.033.042.882.93-3.30%
3.103.102.883.03-0.98%
3.093.143.023.06-1.61%
3.193.192.973.11-0.96%
2.983.162.963.14+6.08%
3.033.192.952.96-3.27%
3.333.363.013.06-8.38%
3.293.413.233.34+2.14%
3.213.353.193.27+2.51%
3.343.433.173.19-6.18%
3.453.453.313.40-2.02%
3.573.583.413.47-1.98%
3.513.593.423.54+1.72%
3.683.753.453.48-5.95%
3.623.903.543.70+1.93%
3.463.693.323.63+6.76%
3.353.443.243.40+2.41%
3.533.603.283.32-5.41%
3.603.673.473.51-3.31%
3.633.803.533.63-1.09%
3.663.683.503.67-0.81%
3.533.743.423.70+5.11%
3.403.563.323.52+3.23%
3.473.563.363.41-0.87%
3.613.673.403.44-6.52%
3.463.703.453.68+7.29%
3.533.733.413.43-2.56%
3.313.643.303.52+4.76%
3.163.363.093.36+7.01%
3.133.273.123.14-0.32%
3.223.293.123.15-3.08%
3.143.303.143.25+3.83%
3.093.173.023.130.00%
3.153.183.033.13-0.63%
3.173.213.083.15-0.94%
3.083.203.033.18+4.95%
2.973.062.943.03+2.71%
2.983.102.872.95+0.34%
3.293.322.902.94-10.64%
3.243.453.163.29+1.54%
3.363.393.133.24+2.86%
3.433.803.123.15-2.17%
3.173.602.563.22+15.41%
2.572.832.542.79+9.84%
2.812.842.542.54-8.63%
2.832.912.742.78-0.71%
2.952.992.792.80-2.78%
2.812.902.722.88+1.05%
2.782.862.702.85+2.89%
2.742.932.662.77+1.09%
2.992.992.742.74-8.36%
2.933.042.932.99+2.05%
2.932.992.822.93+1.03%
3.073.072.702.90-5.84%
3.003.132.883.08+2.67%
2.933.002.893.00+3.09%
3.153.212.832.91-6.73%
3.013.233.013.12+2.30%
3.083.163.013.05-1.61%
3.263.263.093.10-5.78%
3.163.423.153.29+1.86%
3.263.383.233.23-1.52%
3.383.493.243.28-3.24%
3.353.503.303.39+1.19%
3.353.503.313.35+1.52%
3.443.453.223.30-4.35%
3.393.463.203.45+0.58%
3.283.653.203.43+3.94%
3.153.703.153.30+3.77%
3.353.353.113.18-5.92%
3.443.793.213.380.00%
3.753.883.383.38-11.98%
3.524.003.233.84+9.09%
3.583.643.323.52-1.95%
3.343.703.123.59+10.46%
2.813.302.753.25+15.66%
2.792.922.702.81+5.24%
2.772.842.632.67-4.30%
2.983.042.772.79-5.42%
2.913.052.852.95+1.72%
2.943.112.872.90-2.03%
3.073.212.952.96-3.58%
3.003.122.893.070.00%
3.513.513.053.07-11.53%
3.553.693.453.47-2.25%
3.543.763.463.55+2.01%
3.603.793.433.48—

Prices are adjusted for stock splits. See adjusted closing price for how dividends and splits affect history, and the ACIU chart for longer ranges.