Rubicon Technology, Inc. (RBCN)
OTCMKTS · Delayed Price · Currency is USD
5.54
0.00 (0.00%)
May 26, 2026, 4:00 PM EST
Rubicon Technology Stock Price History
Historical Data
| Date | Open | High | Low | Close | Adj. Close | Change | Volume |
|---|---|---|---|---|---|---|---|
| May 26, 2026 | 5.53 | 5.54 | 4.91 | 5.54 | 5.54 | 0.03% | 3,127 |
| May 21, 2026 | 4.69 | 5.54 | 4.69 | 5.54 | 5.54 | 25.91% | 2,660 |
| May 19, 2026 | 4.40 | 4.40 | 4.40 | 4.40 | 4.40 | - | 1,945 |
| May 18, 2026 | 4.55 | 4.55 | 4.40 | 4.40 | 4.40 | -2.22% | 6,725 |
| May 15, 2026 | 4.45 | 4.50 | 4.43 | 4.50 | 4.50 | - | 81,536 |
| May 14, 2026 | 4.51 | 4.55 | 4.41 | 4.50 | 4.50 | -2.17% | 25,738 |
| May 13, 2026 | 4.32 | 4.60 | 4.32 | 4.60 | 4.60 | 6.73% | 6,522 |
| May 12, 2026 | 4.58 | 4.58 | 4.31 | 4.31 | 4.31 | -2.63% | 3,240 |
| May 11, 2026 | 4.20 | 4.45 | 4.20 | 4.43 | 4.43 | 10.65% | 35,804 |
| May 8, 2026 | 3.90 | 4.00 | 3.90 | 4.00 | 4.00 | - | 4,450 |
| May 7, 2026 | 4.00 | 4.00 | 3.95 | 4.00 | 4.00 | - | 6,123 |
| May 6, 2026 | 4.00 | 4.00 | 4.00 | 4.00 | 4.00 | 5.26% | 7,279 |
| May 1, 2026 | 3.80 | 3.80 | 3.80 | 3.80 | 3.80 | 2.70% | 101 |
| Apr 29, 2026 | 3.70 | 3.70 | 3.70 | 3.70 | 3.70 | -5.85% | 1,001 |
| Apr 24, 2026 | 3.65 | 3.95 | 3.65 | 3.93 | 3.93 | 7.67% | 1,399 |
| Apr 22, 2026 | 3.51 | 3.65 | 3.51 | 3.65 | 3.65 | 3.69% | 3,344 |
| Apr 21, 2026 | 3.51 | 3.52 | 3.51 | 3.52 | 3.52 | -0.85% | 331 |
| Apr 20, 2026 | 3.55 | 3.55 | 3.55 | 3.55 | 3.55 | 6.61% | 342 |
| Apr 17, 2026 | 3.33 | 3.33 | 3.33 | 3.33 | 3.33 | 0.15% | 253 |
| Apr 16, 2026 | 3.20 | 3.33 | 3.15 | 3.33 | 3.33 | 5.22% | 13,905 |
| Apr 15, 2026 | 3.16 | 3.16 | 3.16 | 3.16 | 3.16 | - | 10,007 |
| Apr 14, 2026 | 3.47 | 3.47 | 3.16 | 3.16 | 3.16 | -10.00% | 5,004 |
| Apr 13, 2026 | 3.55 | 3.55 | 3.51 | 3.51 | 3.51 | 4.81% | 343 |
| Apr 10, 2026 | 3.35 | 3.35 | 3.35 | 3.35 | 3.35 | -0.30% | 1,020 |
| Apr 8, 2026 | 3.19 | 3.36 | 3.19 | 3.36 | 3.36 | 0.30% | 725 |
| Apr 7, 2026 | 3.35 | 3.35 | 3.35 | 3.35 | 3.35 | - | 504 |
| Apr 6, 2026 | 3.36 | 3.36 | 3.35 | 3.35 | 3.35 | 5.51% | 1,197 |
| Apr 2, 2026 | 3.17 | 3.18 | 3.10 | 3.18 | 3.18 | 2.42% | 1,902 |
| Apr 1, 2026 | 3.11 | 3.11 | 3.10 | 3.10 | 3.10 | 2.99% | 15,015 |
| Mar 27, 2026 | 3.05 | 3.05 | 3.01 | 3.01 | 3.01 | -1.63% | 872 |
| Mar 23, 2026 | 3.00 | 3.06 | 3.00 | 3.06 | 3.06 | 2.00% | 720 |
| Mar 13, 2026 | 3.05 | 3.05 | 3.00 | 3.00 | 3.00 | -1.64% | 1,845 |
| Mar 12, 2026 | 3.05 | 3.05 | 3.05 | 3.05 | 3.05 | -5.86% | 598 |
| Mar 5, 2026 | 3.25 | 3.25 | 3.24 | 3.24 | 3.24 | 3.85% | 982 |
| Mar 3, 2026 | 3.12 | 3.12 | 3.12 | 3.12 | 3.12 | 4.00% | 334 |
| Mar 2, 2026 | 3.00 | 3.00 | 3.00 | 3.00 | 3.00 | -3.23% | 1,033 |
| Feb 26, 2026 | 3.00 | 3.10 | 3.00 | 3.10 | 3.10 | - | 27,667 |
| Feb 25, 2026 | 3.00 | 3.10 | 2.86 | 3.10 | 3.10 | 9.15% | 34,151 |
| Feb 24, 2026 | 2.84 | 2.84 | 2.84 | 2.84 | 2.84 | 0.35% | 100 |
| Feb 23, 2026 | 2.83 | 2.83 | 2.83 | 2.83 | 2.83 | 0.67% | 100 |
| Feb 18, 2026 | 2.78 | 2.81 | 2.78 | 2.81 | 2.81 | 1.31% | 633 |
| Feb 17, 2026 | 2.75 | 2.80 | 2.75 | 2.78 | 2.78 | 2.40% | 29,503 |
| Feb 12, 2026 | 2.72 | 2.72 | 2.71 | 2.71 | 2.71 | -6.55% | 3,277 |
| Feb 11, 2026 | 2.75 | 2.90 | 2.75 | 2.90 | 2.90 | - | 209 |
| Feb 6, 2026 | 2.90 | 2.90 | 2.90 | 2.90 | 2.90 | -3.01% | 731 |
| Feb 4, 2026 | 2.72 | 2.99 | 2.72 | 2.99 | 2.99 | 2.75% | 276 |
| Feb 3, 2026 | 2.91 | 2.91 | 2.91 | 2.91 | 2.91 | 5.82% | 268 |
| Feb 2, 2026 | 2.75 | 2.75 | 2.75 | 2.75 | 2.75 | - | 512 |
| Jan 30, 2026 | 2.75 | 2.75 | 2.75 | 2.75 | 2.75 | -8.03% | 500 |
| Jan 28, 2026 | 2.90 | 2.99 | 2.90 | 2.99 | 2.99 | 3.10% | 552 |