Rubicon Technology, Inc. (RBCN)
OTCMKTS · Delayed Price · Currency is USD
4.120
-0.060 (-1.44%)
Oct 6, 2025, 12:28 PM EDT
Rubicon Technology Stock Price History
Historical Data
| Date | Open | High | Low | Close | Adj. Close | Change | Volume |
|---|---|---|---|---|---|---|---|
| Oct 6, 2025 | 4.12 | 4.12 | 4.12 | 4.12 | - | -0.24% | 2 |
| 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 |
| Sep 5, 2025 | 4.08 | 4.35 | 4.08 | 4.35 | 4.35 | 4.82% | 327 |
| Sep 4, 2025 | 4.15 | 4.15 | 4.15 | 4.15 | 4.15 | - | 52 |
| Sep 3, 2025 | 4.15 | 4.40 | 4.10 | 4.15 | 4.15 | - | 23,109 |
| Sep 2, 2025 | 4.15 | 4.15 | 4.15 | 4.15 | 4.15 | - | 6 |
| Aug 29, 2025 | 3.80 | 4.15 | 3.80 | 4.15 | 4.15 | -3.06% | 9,918 |
| Aug 28, 2025 | 4.25 | 4.28 | 4.25 | 4.28 | 4.28 | -0.21% | 420 |
| Aug 27, 2025 | 4.33 | 4.33 | 4.25 | 4.29 | 4.29 | -0.92% | 3,858 |
| Aug 26, 2025 | 4.31 | 4.35 | 4.31 | 4.33 | 4.33 | -0.23% | 2,419 |
| Aug 25, 2025 | 4.31 | 4.37 | 4.31 | 4.34 | 4.34 | - | 9,732 |
| Aug 22, 2025 | 4.36 | 4.36 | 4.31 | 4.34 | 4.34 | -0.69% | 25,620 |
| Aug 21, 2025 | 3.75 | 4.54 | 3.75 | 4.37 | 4.37 | 34.05% | 116,921 |
| Aug 20, 2025 | 3.26 | 3.26 | 3.26 | 3.26 | 3.26 | - | 1 |
| Aug 19, 2025 | 3.26 | 3.26 | 3.26 | 3.26 | 3.26 | -5.51% | 537 |
| Aug 18, 2025 | 3.45 | 3.45 | 3.45 | 3.45 | 3.45 | -2.27% | 1,507 |
| Aug 15, 2025 | 3.25 | 3.53 | 3.25 | 3.53 | 3.53 | 13.87% | 1,847 |
| Aug 14, 2025 | 3.10 | 3.10 | 3.10 | 3.10 | 3.10 | -4.62% | 1,025 |
| Aug 13, 2025 | 3.10 | 3.25 | 3.10 | 3.25 | 3.25 | 4.84% | 221 |
| Aug 12, 2025 | 3.20 | 3.20 | 3.10 | 3.10 | 3.10 | -3.13% | 1,987 |
| Aug 11, 2025 | 3.16 | 3.20 | 3.16 | 3.20 | 3.20 | 3.23% | 200 |
| Aug 8, 2025 | 3.53 | 3.53 | 3.10 | 3.10 | 3.10 | -8.82% | 11,763 |
| Aug 7, 2025 | 3.53 | 3.53 | 3.40 | 3.40 | 3.40 | -2.86% | 510 |
| Aug 6, 2025 | 3.50 | 3.50 | 3.32 | 3.50 | 3.50 | -2.78% | 719 |
| Aug 5, 2025 | 3.40 | 5.51 | 3.40 | 3.60 | 3.60 | 9.09% | 89,787 |
| Aug 4, 2025 | 3.40 | 3.40 | 3.30 | 3.30 | 3.30 | 1.54% | 758 |
| Aug 1, 2025 | 3.28 | 3.49 | 3.21 | 3.25 | 3.25 | 1.31% | 3,655 |
| Jul 31, 2025 | 3.21 | 3.21 | 3.21 | 3.21 | 3.21 | - | 52 |
| Jul 30, 2025 | 3.25 | 3.46 | 3.21 | 3.21 | 3.21 | 1.84% | 746 |
| Jul 29, 2025 | 3.19 | 3.19 | 3.15 | 3.15 | 3.15 | -0.32% | 1,890 |
| Jul 28, 2025 | 3.46 | 3.46 | 3.15 | 3.16 | 3.16 | -8.41% | 692 |