Rubicon Technology, Inc. (RBCN)
OTCMKTS · Delayed Price · Currency is USD
4.000
-0.090 (-2.20%)
Nov 14, 2025, 9:30 AM EST
Rubicon Technology Stock Price History
Historical Data
| Date | Open | High | Low | Close | Adj. Close | Change | Volume |
|---|---|---|---|---|---|---|---|
| Nov 14, 2025 | 4.08 | 4.08 | 4.00 | 4.00 | 4.00 | -2.20% | 1,240 |
| Nov 13, 2025 | 4.09 | 4.09 | 4.09 | 4.09 | 4.09 | - | 272 |
| Nov 12, 2025 | 4.09 | 4.09 | 4.09 | 4.09 | 4.09 | -2.62% | 611 |
| Nov 11, 2025 | 4.22 | 4.22 | 4.03 | 4.20 | 4.20 | -5.62% | 4,977 |
| Nov 10, 2025 | 4.40 | 4.50 | 4.40 | 4.45 | 4.45 | 0.38% | 2,145 |
| Nov 7, 2025 | 4.43 | 4.43 | 4.43 | 4.43 | 4.43 | 0.07% | 656 |
| Nov 6, 2025 | 4.45 | 4.45 | 4.43 | 4.43 | 4.43 | 1.84% | 924 |
| Nov 5, 2025 | 4.35 | 4.35 | 4.35 | 4.35 | 4.35 | 2.84% | 1,051 |
| Nov 4, 2025 | 4.23 | 4.23 | 4.23 | 4.23 | 4.23 | - | 20 |
| Nov 3, 2025 | 4.20 | 4.23 | 4.20 | 4.23 | 4.23 | -2.76% | 1,150 |
| Oct 31, 2025 | 4.35 | 4.35 | 4.35 | 4.35 | 4.35 | - | 1 |
| Oct 30, 2025 | 4.35 | 4.35 | 4.35 | 4.35 | 4.35 | - | 51 |
| Oct 29, 2025 | 4.35 | 4.35 | 4.35 | 4.35 | 4.35 | 1.16% | 3,034 |
| Oct 28, 2025 | 4.32 | 4.34 | 4.30 | 4.30 | 4.30 | 2.38% | 32,603 |
| Oct 27, 2025 | 4.20 | 4.20 | 4.20 | 4.20 | 4.20 | 0.24% | 117 |
| Oct 24, 2025 | 4.21 | 4.21 | 4.18 | 4.19 | 4.19 | -1.41% | 782 |
| Oct 23, 2025 | 4.25 | 4.25 | 4.25 | 4.25 | 4.25 | - | 46 |
| Oct 22, 2025 | 4.25 | 4.25 | 4.25 | 4.25 | 4.25 | -0.23% | 1,071 |
| Oct 21, 2025 | 4.29 | 4.29 | 4.26 | 4.26 | 4.26 | -0.35% | 628 |
| Oct 20, 2025 | 4.28 | 4.28 | 4.28 | 4.28 | 4.28 | 0.35% | 191 |
| Oct 17, 2025 | 4.26 | 4.26 | 4.26 | 4.26 | 4.26 | -0.33% | 729 |
| Oct 16, 2025 | 4.34 | 4.34 | 4.27 | 4.27 | 4.27 | -0.60% | 500 |
| Oct 15, 2025 | 4.21 | 4.35 | 4.17 | 4.30 | 4.30 | 3.61% | 1,253 |
| Oct 14, 2025 | 4.15 | 4.15 | 4.15 | 4.15 | 4.15 | - | - |
| Oct 13, 2025 | 4.18 | 4.19 | 4.15 | 4.15 | 4.15 | -0.72% | 1,979 |
| Oct 10, 2025 | 4.18 | 4.18 | 4.18 | 4.18 | 4.18 | - | 20 |
| Oct 9, 2025 | 4.18 | 4.32 | 4.18 | 4.18 | 4.18 | - | 1,719 |
| Oct 8, 2025 | 4.18 | 4.20 | 4.15 | 4.18 | 4.18 | 1.21% | 5,585 |
| Oct 7, 2025 | 4.13 | 4.13 | 4.13 | 4.13 | 4.13 | - | 46 |
| Oct 6, 2025 | 4.13 | 4.13 | 4.13 | 4.13 | 4.13 | - | 14 |
| Oct 3, 2025 | 4.17 | 4.17 | 4.13 | 4.13 | 4.13 | -1.20% | 210 |
| Oct 2, 2025 | 4.18 | 4.18 | 4.18 | 4.18 | 4.18 | 0.48% | 597 |
| Oct 1, 2025 | 4.16 | 4.16 | 4.16 | 4.16 | 4.16 | -0.48% | 286 |
| Sep 30, 2025 | 4.18 | 4.26 | 4.16 | 4.18 | 4.18 | 0.24% | 5,332 |
| Sep 29, 2025 | 4.24 | 4.24 | 4.17 | 4.17 | 4.17 | -4.14% | 1,297 |
| Sep 26, 2025 | 4.18 | 4.35 | 4.15 | 4.35 | 4.35 | 1.64% | 9,033 |
| Sep 25, 2025 | 4.21 | 4.32 | 4.21 | 4.28 | 4.28 | -0.23% | 392 |
| Sep 24, 2025 | 4.29 | 4.29 | 4.25 | 4.29 | 4.29 | 1.80% | 1,581 |
| Sep 23, 2025 | 4.21 | 4.21 | 4.21 | 4.21 | 4.21 | -2.36% | 1,331 |
| Sep 22, 2025 | 4.16 | 4.32 | 4.16 | 4.32 | 4.32 | 2.62% | 1,062 |
| Sep 19, 2025 | 4.24 | 4.25 | 4.20 | 4.21 | 4.21 | -0.99% | 10,051 |
| Sep 18, 2025 | 4.21 | 4.25 | 4.17 | 4.25 | 4.25 | -0.75% | 3,121 |
| Sep 17, 2025 | 4.28 | 4.28 | 4.28 | 4.28 | 4.28 | -0.70% | 462 |
| Sep 16, 2025 | 4.31 | 4.31 | 4.31 | 4.31 | 4.31 | 1.17% | 131 |
| Sep 15, 2025 | 4.21 | 4.37 | 4.21 | 4.26 | 4.26 | 0.50% | 10,836 |
| Sep 12, 2025 | 4.13 | 4.24 | 4.13 | 4.24 | 4.24 | 0.26% | 1,276 |
| Sep 11, 2025 | 4.25 | 4.26 | 4.23 | 4.23 | 4.23 | -0.52% | 666 |
| Sep 10, 2025 | 4.28 | 4.28 | 4.25 | 4.25 | 4.25 | -0.23% | 6,797 |
| Sep 9, 2025 | 4.26 | 4.26 | 4.26 | 4.26 | 4.26 | - | 45 |
| Sep 8, 2025 | 4.00 | 4.30 | 4.00 | 4.26 | 4.26 | -2.07% | 1,753 |