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Rubicon Technology, Inc. (RBCN)

4.7600 0.0000 (0.00%)
At close: November 6 at 4:00:00 PM EST
Currency in USD
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Date Open High Low Close Adj Close Volume
Nov 6, 2026
4.7600 4.7600 4.7600 4.7600 4.7600 -
Nov 5, 2026
4.7600 4.7600 4.7600 4.7600 4.7600 -
Nov 4, 2026
4.7600 4.7600 4.7600 4.7600 4.7600 -
Nov 3, 2026
4.7600 4.7600 4.7600 4.7600 4.7600 100
Nov 2, 2026
4.7600 4.7600 4.7600 4.7600 4.7600 -
Oct 30, 2026
4.7600 4.7600 4.7600 4.7600 4.7600 500
Oct 29, 2026
5.1000 5.1000 5.1000 5.1000 5.1000 300
Oct 28, 2026
4.9300 5.1000 4.6000 5.1000 5.1000 2,200
Oct 27, 2026
5.1200 5.1200 4.8000 4.8000 4.8000 2,100
Oct 26, 2026
5.3100 5.3100 4.6000 4.8000 4.8000 2,800
Oct 23, 2026
4.8400 5.3100 4.8400 5.3100 5.3100 1,800
Oct 22, 2026
5.6000 5.6000 5.0300 5.5000 5.5000 5,700
Oct 21, 2026
5.6100 5.6100 5.6100 5.6100 5.6100 -
Oct 20, 2026
5.6100 5.6100 5.6100 5.6100 5.6100 -
Oct 19, 2026
5.6100 5.6100 5.6100 5.6100 5.6100 -
Oct 16, 2026
5.6100 5.6100 5.6100 5.6100 5.6100 -
Oct 15, 2026
5.6100 5.6100 5.6100 5.6100 5.6100 100
Oct 14, 2026
5.6000 5.6000 5.6000 5.6000 5.6000 -
Oct 13, 2026
5.6000 5.6000 5.6000 5.6000 5.6000 -
Oct 12, 2026
5.6000 5.6000 5.6000 5.6000 5.6000 -
Oct 9, 2026
5.6000 5.6000 5.6000 5.6000 5.6000 200
Oct 8, 2026
5.6100 5.6100 5.6100 5.6100 5.6100 100
Oct 7, 2026
5.7200 5.7200 5.7200 5.7200 5.7200 -
Oct 6, 2026
5.7200 5.7200 5.7200 5.7200 5.7200 -
Oct 5, 2026
5.7200 5.7200 5.7200 5.7200 5.7200 -
Oct 2, 2026
5.7200 5.7200 5.7200 5.7200 5.7200 -
Oct 1, 2026
5.7200 5.7200 5.7200 5.7200 5.7200 -
Sep 30, 2026
5.7200 5.7200 5.7200 5.7200 5.7200 -
Sep 29, 2026
5.7200 5.7200 5.7200 5.7200 5.7200 -
Sep 28, 2026
5.7200 5.7200 5.7200 5.7200 5.7200 100
Sep 25, 2026
5.5500 5.5500 5.5500 5.5500 5.5500 -
Sep 24, 2026
5.5500 5.5500 5.5500 5.5500 5.5500 -
Sep 23, 2026
5.5500 5.5500 5.5500 5.5500 5.5500 -
Sep 22, 2026
5.5500 5.5500 5.5500 5.5500 5.5500 -
Sep 21, 2026
5.5500 5.5500 5.5500 5.5500 5.5500 -
Sep 18, 2026
5.5500 5.5500 5.5500 5.5500 5.5500 -
Sep 17, 2026
5.7000 5.7000 5.5500 5.5500 5.5500 400
Sep 16, 2026
6.3500 6.3500 6.3500 6.3500 6.3500 200
Sep 15, 2026
6.7000 6.7000 6.7000 6.7000 6.7000 -
Sep 14, 2026
6.7000 6.7000 6.7000 6.7000 6.7000 200
Sep 11, 2026
6.5400 6.7000 6.5400 6.7000 6.7000 1,000
Sep 10, 2026
6.2500 6.2500 6.2500 6.2500 6.2500 -
Sep 9, 2026
6.2500 6.2500 6.2500 6.2500 6.2500 200
Sep 8, 2026
6.3000 6.3000 6.3000 6.3000 6.3000 1,600
Sep 4, 2026
6.2600 6.2600 6.2600 6.2600 6.2600 -
Sep 3, 2026
6.2600 6.2600 6.2600 6.2600 6.2600 -
Sep 2, 2026
6.2600 6.2600 6.2600 6.2600 6.2600 -
Sep 1, 2026
6.2600 6.2600 6.2600 6.2600 6.2600 -
Aug 31, 2026
6.2600 6.2600 6.2600 6.2600 6.2600 600
Aug 28, 2026
6.2500 6.2500 6.2500 6.2500 6.2500 -
Aug 27, 2026
6.2500 6.2500 6.2500 6.2500 6.2500 -
Aug 26, 2026
6.2500 6.2500 6.2500 6.2500 6.2500 -
Aug 25, 2026
6.2500 6.2500 6.2500 6.2500 6.2500 900
Aug 24, 2026
6.1200 6.1200 6.1200 6.1200 6.1200 -
Aug 21, 2026
6.1200 6.1200 6.1200 6.1200 6.1200 -
Aug 20, 2026
6.1200 6.1200 6.1200 6.1200 6.1200 -
Aug 19, 2026
6.2200 6.2200 5.8700 6.1200 6.1200 1,200
Aug 18, 2026
6.5000 6.5000 6.5000 6.5000 6.5000 100
Aug 17, 2026
6.5000 6.5000 6.5000 6.5000 6.5000 -
Aug 14, 2026
6.5000 6.5000 6.5000 6.5000 6.5000 500
Aug 13, 2026
6.2200 6.2200 6.2200 6.2200 6.2200 -
Aug 12, 2026
5.9700 6.2200 5.6600 6.2200 6.2200 4,800
Aug 11, 2026
5.9000 5.9700 5.8400 5.8700 5.8700 1,000
Aug 10, 2026
5.4000 5.7000 5.4000 5.7000 5.7000 500
Aug 7, 2026
5.6500 5.9000 5.6500 5.8000 5.8000 10,200
Aug 6, 2026
5.3000 5.3000 5.3000 5.3000 5.3000 -
Aug 5, 2026
5.3000 5.3000 5.3000 5.3000 5.3000 500
Aug 4, 2026
5.3000 5.3000 5.3000 5.3000 5.3000 200
Aug 3, 2026
5.3000 5.3000 5.3000 5.3000 5.3000 -
Jul 31, 2026
5.3000 5.3000 5.3000 5.3000 5.3000 -
Jul 30, 2026
5.3000 5.3000 5.3000 5.3000 5.3000 -
Jul 29, 2026
5.3000 5.3000 5.3000 5.3000 5.3000 100
Jul 28, 2026
5.3200 5.3200 5.3200 5.3200 5.3200 -
Jul 27, 2026
5.3200 5.3200 5.3200 5.3200 5.3200 200
Jul 24, 2026
5.3200 5.3200 5.3200 5.3200 5.3200 -
Jul 23, 2026
5.3200 5.3200 5.3000 5.3200 5.3200 7,200
Jul 22, 2026
5.8000 5.8000 5.8000 5.8000 5.8000 -
Jul 21, 2026
5.8000 5.8000 5.8000 5.8000 5.8000 200
Jul 20, 2026
5.5400 5.5400 5.5400 5.5400 5.5400 -
Jul 17, 2026
5.3200 5.5500 5.3200 5.5400 5.5400 1,400
Jul 16, 2026
5.3200 5.3200 5.3200 5.3200 5.3200 100
Jul 15, 2026
5.2600 5.2600 5.2600 5.2600 5.2600 -
Jul 14, 2026
5.2600 5.2600 5.2600 5.2600 5.2600 100
Jul 13, 2026
5.4700 5.4700 5.4700 5.4700 5.4700 -
Jul 10, 2026
5.4700 5.4700 5.4700 5.4700 5.4700 200
Jul 9, 2026
5.4500 5.4500 5.4500 5.4500 5.4500 1,500
Jul 8, 2026
5.6000 5.6000 5.6000 5.6000 5.6000 -
Jul 7, 2026
5.6000 5.6000 5.6000 5.6000 5.6000 -
Jul 6, 2026
5.6000 5.6000 5.6000 5.6000 5.6000 200
Jul 2, 2026
5.6000 5.6000 5.5700 5.6000 5.6000 1,200
Jul 1, 2026
5.8000 5.8000 5.8000 5.8000 5.8000 -
Jun 30, 2026
5.5100 5.8000 5.5100 5.8000 5.8000 2,400
Jun 29, 2026
5.7900 5.7900 5.7900 5.7900 5.7900 -
Jun 26, 2026
5.4500 5.8400 5.4500 5.7900 5.7900 700
Jun 25, 2026
5.7700 5.7700 5.7700 5.7700 5.7700 1,400
Jun 24, 2026
5.7700 5.8000 5.7700 5.7700 5.7700 1,000
Jun 23, 2026
5.4500 5.7700 5.4500 5.7700 5.7700 400
Jun 22, 2026
5.6800 5.6800 5.6800 5.6800 5.6800 -
Jun 18, 2026
5.6800 5.6800 5.6800 5.6800 5.6800 -
Jun 17, 2026
5.6800 5.6800 5.6800 5.6800 5.6800 -
Jun 16, 2026
5.6800 5.6800 5.6800 5.6800 5.6800 -
Jun 15, 2026
5.6800 5.6800 5.6800 5.6800 5.6800 -
Jun 12, 2026
5.6800 5.6800 5.6800 5.6800 5.6800 200
Jun 11, 2026
5.3500 5.3500 5.2500 5.3500 5.3500 500
Jun 10, 2026
5.4100 5.4100 5.4100 5.4100 5.4100 -
Jun 9, 2026
5.4100 5.4100 5.4100 5.4100 5.4100 -
Jun 8, 2026
5.1200 5.4100 5.1200 5.4100 5.4100 1,300
Jun 5, 2026
5.7000 5.7000 5.7000 5.7000 5.7000 -
Jun 4, 2026
5.1500 5.7700 5.1100 5.7000 5.7000 1,600
Jun 3, 2026
5.6000 5.8000 5.6000 5.8000 5.8000 2,700
Jun 2, 2026
5.6300 5.7500 5.6000 5.6000 5.6000 2,300
Jun 1, 2026
5.7500 5.7500 5.7500 5.7500 5.7500 200
May 29, 2026
5.5500 5.7000 5.5000 5.5000 5.5000 4,900
May 28, 2026
5.5400 5.5400 5.5400 5.5400 5.5400 -
May 27, 2026
5.5400 5.5400 5.5400 5.5400 5.5400 -
May 26, 2026
5.5300 5.5400 4.9100 5.5400 5.5400 3,100
May 22, 2026
5.5400 5.5400 5.5400 5.5400 5.5400 -
May 21, 2026
4.6900 5.5400 4.6900 5.5400 5.5400 2,700
May 20, 2026
4.4000 4.4000 4.4000 4.4000 4.4000 -
May 19, 2026
4.4000 4.4000 4.4000 4.4000 4.4000 1,900
May 18, 2026
4.5500 4.5500 4.4000 4.4000 4.4000 6,700
May 15, 2026
4.4500 4.5000 4.4300 4.5000 4.5000 81,500
May 14, 2026
4.5100 4.5500 4.4100 4.5000 4.5000 25,700
May 13, 2026
4.3200 4.6000 4.3200 4.6000 4.6000 6,500
May 12, 2026
4.5800 4.5800 4.3100 4.3100 4.3100 3,200
May 11, 2026
4.2000 4.4500 4.2000 4.4300 4.4300 35,800
May 8, 2026
3.9000 4.0000 3.9000 4.0000 4.0000 4,500
May 7, 2026
4.0000 4.0000 3.9500 4.0000 4.0000 6,100
May 6, 2026
4.0000 4.0000 4.0000 4.0000 4.0000 7,300
May 5, 2026
3.8000 3.8000 3.8000 3.8000 3.8000 -
May 4, 2026
3.8000 3.8000 3.8000 3.8000 3.8000 -
May 1, 2026
3.8000 3.8000 3.8000 3.8000 3.8000 100
Apr 30, 2026
3.7000 3.7000 3.7000 3.7000 3.7000 -
Apr 29, 2026
3.7000 3.7000 3.7000 3.7000 3.7000 1,000
Apr 28, 2026
3.9300 3.9300 3.9300 3.9300 3.9300 -
Apr 27, 2026
3.9300 3.9300 3.9300 3.9300 3.9300 -
Apr 24, 2026
3.6500 3.9500 3.6500 3.9300 3.9300 1,400
Apr 23, 2026
3.6500 3.6500 3.6500 3.6500 3.6500 -
Apr 22, 2026
3.5100 3.6500 3.5100 3.6500 3.6500 3,300
Apr 21, 2026
3.5100 3.5200 3.5100 3.5200 3.5200 300
Apr 20, 2026
3.5500 3.5500 3.5500 3.5500 3.5500 300
Apr 17, 2026
3.3300 3.3300 3.3300 3.3300 3.3300 300
Apr 16, 2026
3.2000 3.3300 3.1500 3.3300 3.3300 13,900
Apr 15, 2026
3.1600 3.1600 3.1600 3.1600 3.1600 10,000
Apr 14, 2026
3.4700 3.4700 3.1600 3.1600 3.1600 5,000
Apr 13, 2026
3.5500 3.5500 3.5100 3.5100 3.5100 300
Apr 10, 2026
3.3500 3.3500 3.3500 3.3500 3.3500 1,000
Apr 9, 2026
3.3600 3.3600 3.3600 3.3600 3.3600 -
Apr 8, 2026
3.1900 3.3600 3.1900 3.3600 3.3600 700
Apr 7, 2026
3.3500 3.3500 3.3500 3.3500 3.3500 500
Apr 6, 2026
3.3600 3.3600 3.3500 3.3500 3.3500 1,200
Apr 2, 2026
3.1700 3.1800 3.1000 3.1800 3.1800 1,900
Apr 1, 2026
3.1100 3.1100 3.1000 3.1000 3.1000 15,000
Mar 31, 2026
3.0100 3.0100 3.0100 3.0100 3.0100 -
Mar 30, 2026
3.0100 3.0100 3.0100 3.0100 3.0100 -
Mar 27, 2026
3.0500 3.0500 3.0100 3.0100 3.0100 900
Mar 26, 2026
3.0600 3.0600 3.0600 3.0600 3.0600 -
Mar 25, 2026
3.0600 3.0600 3.0600 3.0600 3.0600 -
Mar 24, 2026
3.0600 3.0600 3.0600 3.0600 3.0600 -
Mar 23, 2026
3.0000 3.0600 3.0000 3.0600 3.0600 700
Mar 20, 2026
3.0000 3.0000 3.0000 3.0000 3.0000 -
Mar 19, 2026
3.0000 3.0000 3.0000 3.0000 3.0000 -
Mar 18, 2026
3.0000 3.0000 3.0000 3.0000 3.0000 -
Mar 17, 2026
3.0000 3.0000 3.0000 3.0000 3.0000 -
Mar 16, 2026
3.0000 3.0000 3.0000 3.0000 3.0000 -
Mar 13, 2026
3.0500 3.0500 3.0000 3.0000 3.0000 1,800
Mar 12, 2026
3.0500 3.0500 3.0500 3.0500 3.0500 600
Mar 11, 2026
3.2400 3.2400 3.2400 3.2400 3.2400 -
Mar 10, 2026
3.2400 3.2400 3.2400 3.2400 3.2400 -
Mar 9, 2026
3.2400 3.2400 3.2400 3.2400 3.2400 -
Mar 6, 2026
3.2400 3.2400 3.2400 3.2400 3.2400 -
Mar 5, 2026
3.2500 3.2500 3.2400 3.2400 3.2400 1,000
Mar 4, 2026
3.1200 3.1200 3.1200 3.1200 3.1200 -
Mar 3, 2026
3.1200 3.1200 3.1200 3.1200 3.1200 300
Mar 2, 2026
3.0000 3.0000 3.0000 3.0000 3.0000 1,000
Feb 27, 2026
3.1000 3.1000 3.1000 3.1000 3.1000 -
Feb 26, 2026
3.0000 3.1000 3.0000 3.1000 3.1000 27,700
Feb 25, 2026
3.0000 3.1000 2.8600 3.1000 3.1000 34,200
Feb 24, 2026
2.8400 2.8400 2.8400 2.8400 2.8400 100
Feb 23, 2026
2.8300 2.8300 2.8300 2.8300 2.8300 100
Feb 20, 2026
2.8100 2.8100 2.8100 2.8100 2.8100 -
Feb 19, 2026
2.8100 2.8100 2.8100 2.8100 2.8100 -
Feb 18, 2026
2.7800 2.8100 2.7800 2.8100 2.8100 600
Feb 17, 2026
2.7500 2.8000 2.7500 2.7800 2.7800 29,500
Feb 13, 2026
2.7100 2.7100 2.7100 2.7100 2.7100 -
Feb 12, 2026
2.7200 2.7200 2.7100 2.7100 2.7100 3,300
Feb 11, 2026
2.7500 2.9000 2.7500 2.9000 2.9000 200
Feb 10, 2026
2.9000 2.9000 2.9000 2.9000 2.9000 -
Feb 9, 2026
2.9000 2.9000 2.9000 2.9000 2.9000 -
Feb 6, 2026
2.9000 2.9000 2.9000 2.9000 2.9000 700
Feb 5, 2026
2.9900 2.9900 2.9900 2.9900 2.9900 -
Feb 4, 2026
2.7200 2.9900 2.7200 2.9900 2.9900 300
Feb 3, 2026
2.9100 2.9100 2.9100 2.9100 2.9100 300
Feb 2, 2026
2.7500 2.7500 2.7500 2.7500 2.7500 500
Jan 30, 2026
2.7500 2.7500 2.7500 2.7500 2.7500 500
Jan 29, 2026
2.9900 2.9900 2.9900 2.9900 2.9900 -
Jan 28, 2026
2.9000 2.9900 2.9000 2.9900 2.9900 600
Jan 27, 2026
2.9000 2.9000 2.9000 2.9000 2.9000 800
Jan 26, 2026
2.8900 2.8900 2.8000 2.8000 2.8000 500
Jan 23, 2026
2.7700 2.7700 2.7700 2.7700 2.7700 -
Jan 22, 2026
2.7700 2.7700 2.7700 2.7700 2.7700 -
Jan 21, 2026
2.8000 2.8000 2.7700 2.7700 2.7700 1,000
Jan 20, 2026
2.8100 2.8100 2.8100 2.8100 2.8100 5,000
Jan 16, 2026
2.8000 2.8000 2.8000 2.8000 2.8000 -
Jan 15, 2026
2.8000 2.8000 2.8000 2.8000 2.8000 300
Jan 14, 2026
2.8800 2.8800 2.8800 2.8800 2.8800 -
Jan 13, 2026
2.8800 2.8800 2.8800 2.8800 2.8800 -
Jan 12, 2026
2.8800 2.8800 2.8800 2.8800 2.8800 -
Jan 9, 2026
2.7300 3.1000 2.7300 2.8800 2.8800 2,300
Jan 8, 2026
2.7500 3.0900 2.7100 3.0900 3.0900 1,500
Jan 7, 2026
2.5500 2.6400 2.5500 2.6400 2.6400 19,100
Jan 6, 2026
2.9400 2.9400 2.9400 2.9400 2.9400 -
Jan 5, 2026
2.9400 2.9400 2.9400 2.9400 2.9400 -
Jan 2, 2026
2.9400 2.9400 2.9400 2.9400 2.9400 100
Dec 31, 2025
2.9500 2.9500 2.7500 2.7500 2.7500 1,800
Dec 30, 2025
2.9500 3.0500 2.9500 3.0500 3.0500 300
Dec 29, 2025
3.0600 3.0600 2.9000 2.9100 2.9100 1,800
Dec 26, 2025
2.8100 2.8100 2.8100 2.8100 2.8100 100
Dec 24, 2025
2.8000 2.8000 2.8000 2.8000 2.8000 1,100
Dec 23, 2025
2.9000 2.9000 2.8100 2.8100 2.8100 800
Dec 22, 2025
2.8300 2.8300 2.8000 2.8000 2.8000 2,300
Dec 19, 2025
2.8000 2.8000 2.8000 2.8000 2.8000 1,300
Dec 18, 2025
2.9700 2.9700 2.9700 2.9700 2.9700 -
Dec 17, 2025
2.9700 2.9700 2.9700 2.9700 2.9700 100
Dec 16, 2025
2.8500 2.8500 2.8500 2.8500 2.8500 -
Dec 15, 2025
2.8200 2.9700 2.8200 2.8500 2.8500 2,200
Dec 12, 2025
2.8000 2.9400 2.8000 2.9400 2.9400 900
Dec 11, 2025
2.8000 2.9000 2.8000 2.9000 2.9000 1,400
Dec 10, 2025
2.8200 2.8900 2.8000 2.8900 2.8900 5,500
Dec 9, 2025
2.8000 2.8000 2.8000 2.8000 2.8000 -
Dec 8, 2025
2.8000 2.8000 2.8000 2.8000 2.8000 -
Dec 5, 2025
2.8000 2.8000 2.8000 2.8000 2.8000 -
Dec 4, 2025
2.9000 2.9000 2.8000 2.8000 2.8000 4,100
Dec 3, 2025
2.9000 2.9100 2.9000 2.9000 2.9000 3,200
Dec 2, 2025
2.9400 2.9400 2.9000 2.9000 2.9000 2,900
Dec 1, 2025
2.9400 2.9400 2.9400 2.9400 2.9400 -
Nov 28, 2025
2.9400 2.9400 2.9400 2.9400 2.9400 300
Nov 26, 2025
2.9600 3.0000 2.9600 3.0000 3.0000 400
Nov 25, 2025
2.9200 2.9700 2.8600 2.9200 2.9200 36,000
Nov 24, 2025
3.0500 3.0500 3.0500 3.0500 3.0500 -
Nov 21, 2025
3.0300 3.0500 2.8800 3.0500 3.0500 7,300
Nov 20, 2025
3.1700 3.1700 3.1700 3.1700 3.1700 -
Nov 19, 2025
3.1700 3.1700 3.1700 3.1700 3.1700 -
Nov 18, 2025
2.9500 3.4800 2.9000 3.1700 3.1700 4,600
Nov 17, 2025
4.0000 4.0000 2.7500 3.0100 3.0100 10,100
Nov 14, 2025
4.0800 4.0800 4.0000 4.0000 4.0000 1,200
Nov 13, 2025
4.0900 4.0900 4.0900 4.0900 4.0900 300
Nov 12, 2025
4.0900 4.0900 4.0900 4.0900 4.0900 600
Nov 11, 2025
4.2200 4.2200 4.0300 4.2000 4.2000 5,000
Nov 10, 2025
4.4000 4.5000 4.4000 4.4500 4.4500 2,100
Nov 7, 2025
4.4300 4.4300 4.4300 4.4300 4.4300 -

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