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Infineon Technologies AG (IFNNF) stock

IFNNFOTCSemiconductors & Related DevicesFiscal year ends September 30Also trades as IFNNY
Last filing: 20-F on Dec 8, 2009
$58.50−2.17 (-3.58%)

Close on Oct 19, 2026Market cap –P/E –Yield –

Price history

Infineon Technologies share prices for every week, newest first. Adjusted for stock splits, not for dividends.

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Close, Oct 19, 2026
$58.50
-3.58% on the day
52-week range
$37.05 – $103.50
-43.5% from the high
Change over 52 weeks
+55.4%
From $37.65 on Oct 17, 2025
Average volume
10,902
Shares a day, last 90 sessions
Week ofOpenHighLowCloseChangeVolume
Oct 19, 2026$58.45$58.50$58.45$58.50-3.58%142,496
Oct 12, 2026$66.32$66.32$56.16$60.67-11.15%35,464
Oct 5, 2026$71.50$71.50$66.68$68.28-2.98%5,581
Sep 28, 2026$67.35$70.38$65.21$70.38+4.50%3,733
Sep 21, 2026$67.00$68.34$62.82$67.35+5.42%7,781
Sep 14, 2026$62.00$65.00$61.00$63.89-6.73%12,108
Sep 8, 2026$65.49$68.50$63.78$68.50+7.94%22,654
Aug 31, 2026$65.78$65.78$63.00$63.46-6.86%3,155
Aug 24, 2026$64.21$69.40$63.00$68.14+0.81%24,621
Aug 17, 2026$72.15$72.15$62.35$67.59-7.28%8,615
Aug 10, 2026$72.86$76.15$72.08$72.90+2.46%43,793
Aug 3, 2026$71.45$73.16$67.13$71.15-0.20%35,130
Jul 27, 2026$72.13$72.13$61.75$71.29-1.02%11,093
Jul 20, 2026$73.15$79.30$70.85$72.03-0.78%6,030
Jul 13, 2026$81.68$81.89$69.63$72.60-13.47%22,814
Jul 6, 2026$88.00$88.70$79.75$83.90-1.87%84,032
Jun 29, 2026$87.45$93.05$85.50$85.50-3.39%7,320
Jun 22, 2026$97.85$102.30$87.95$88.50-3.80%51,094
Jun 15, 2026$94.91$94.98$87.70$92.00-0.47%439,475
Jun 8, 2026$90.10$94.70$86.11$92.43+4.56%270,854
Jun 1, 2026$93.98$103.50$84.65$88.40-8.20%26,343
May 26, 2026$90.00$96.30$88.00$96.30+16.64%154,615
May 18, 2026$78.00$85.81$72.75$82.56+8.99%35,750
May 11, 2026$72.00$81.10$67.69$75.75+3.34%41,749
May 4, 2026$69.05$73.30$65.45$73.30+7.88%129,666
Apr 27, 2026$63.88$68.45$63.00$67.94+7.00%376,888
Apr 20, 2026$56.50$63.50$55.86$63.50+15.22%14,820
Apr 13, 2026$49.80$58.80$49.80$55.11+6.31%7,670
Apr 6, 2026$46.55$51.84$44.10$51.84+19.12%6,929
Mar 30, 2026$42.30$47.00$42.20$43.52+2.89%1,908
Mar 23, 2026$43.43$46.00$42.30$42.30-2.61%1,606
Mar 16, 2026$44.40$46.50$43.43$43.43-5.17%73,655
Mar 9, 2026$45.65$48.70$45.65$45.80-6.72%12,269
Mar 2, 2026$54.85$54.85$47.45$49.10-10.48%4,013
Feb 23, 2026$54.00$56.84$53.90$54.85+2.14%17,599
Feb 17, 2026$52.65$54.31$52.65$53.70+7.19%4,265
Feb 9, 2026$49.59$51.60$49.50$50.10+3.30%28,189
Feb 2, 2026$49.01$49.82$47.85$48.50-3.83%2,961
Jan 26, 2026$49.17$52.50$49.17$50.43+2.92%8,141
Jan 20, 2026$46.78$50.25$46.78$49.00+0.72%9,298
Jan 12, 2026$48.68$50.00$48.08$48.65+1.88%2,054
Jan 5, 2026$46.20$49.75$46.20$47.75+4.49%14,031
Dec 29, 2025$42.05$45.70$42.05$45.70+7.91%69,993
Dec 22, 2025$43.25$43.27$42.35$42.35+4.18%4,014
Dec 15, 2025$42.25$42.25$40.65$40.65-3.79%1,482
Dec 8, 2025$43.70$43.85$42.25$42.25-3.98%1,656
Dec 1, 2025$40.10$44.00$40.10$44.00+5.52%313,338
Nov 24, 2025$37.30$42.90$37.30$41.70+12.55%56,126
Nov 17, 2025$39.85$39.85$37.05$37.05-9.41%83,907
Nov 10, 2025$37.95$43.00$37.95$40.90+6.45%4,326
Nov 3, 2025$39.45$39.45$38.42$38.42-2.61%3,221
Oct 27, 2025$39.20$40.10$38.86$39.45-2.11%11,694

Seasonality

IFNNF return in each calendar month over the last 10 years, including dividends. The current month runs to the latest close.

YearJanFebMarAprMayJunJulAugSepOctNovDec
Average3.3%0.7%-4.8%6.1%9.6%-3.0%0.5%-1.2%-2.5%0.1%13.5%1.2%
Months up8 of 105 of 103 of 105 of 108 of 104 of 106 of 105 of 103 of 105 of 107 of 96 of 9
202615.8%8.8%-18.1%48.7%44.3%-4.2%-22.7%-7.7%-0.9%-10.3%
20252.1%9.9%-12.6%2.0%19.3%6.6%-3.6%2.0%-7.2%4.2%5.7%4.4%
2024-12.2%-1.6%-6.6%5.5%16.8%-11.0%-7.3%6.5%-2.8%-8.7%-0.7%3.6%
202317.0%0.6%14.6%-11.4%5.1%5.2%8.1%-18.9%-4.8%-12.8%36.9%4.4%
2022-13.8%-13.4%3.6%-18.1%7.8%-23.5%13.5%-9.4%-11.4%14.6%35.7%-9.5%
20212.1%11.4%-3.6%-4.3%-2.5%2.2%-3.6%10.0%-2.8%11.4%-3.5%2.6%
20200.0%-4.9%-31.4%24.9%16.6%8.7%8.8%10.4%3.2%-1.8%26.4%10.0%
201913.0%1.7%-9.0%16.3%-23.8%-0.8%4.9%-7.6%3.6%9.2%11.1%3.3%
20185.0%-5.0%-1.4%-3.1%5.8%-7.7%4.6%-2.9%-9.5%-16.8%8.5%-6.4%
20173.6%-0.7%16.7%-0.1%7.1%-5.2%2.6%6.2%7.6%12.3%1.0%-1.3%

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