Cyanotech Corporation (CYAN)
OTCMKTS · Delayed Price · Currency is USD
0.3100
-0.0006 (-0.19%)
Oct 29, 2025, 12:28 PM EDT
Cyanotech Stock Price History
Historical Data
| Date | Open | High | Low | Close | Adj. Close | Change | Volume |
|---|---|---|---|---|---|---|---|
| Oct 29, 2025 | 0.32 | 0.32 | 0.31 | 0.31 | 0.31 | -0.19% | 14,690 |
| Oct 28, 2025 | 0.25 | 0.31 | 0.25 | 0.31 | 0.31 | -2.33% | 455 |
| Oct 27, 2025 | 0.25 | 0.32 | 0.25 | 0.32 | 0.32 | 13.57% | 6,996 |
| Oct 24, 2025 | 0.33 | 0.33 | 0.26 | 0.28 | 0.28 | -15.15% | 9,352 |
| Oct 23, 2025 | 0.29 | 0.33 | 0.29 | 0.33 | 0.33 | -2.94% | 820 |
| Oct 22, 2025 | 0.34 | 0.34 | 0.34 | 0.34 | 0.34 | - | - |
| Oct 21, 2025 | 0.34 | 0.34 | 0.34 | 0.34 | 0.34 | 17.24% | 518 |
| Oct 20, 2025 | 0.29 | 0.29 | 0.29 | 0.29 | 0.29 | - | 10 |
| Oct 17, 2025 | 0.29 | 0.29 | 0.29 | 0.29 | 0.29 | - | 8 |
| Oct 16, 2025 | 0.29 | 0.29 | 0.29 | 0.29 | 0.29 | -13.43% | 1,005 |
| Oct 15, 2025 | 0.27 | 0.34 | 0.27 | 0.34 | 0.34 | 15.52% | 310 |
| Oct 14, 2025 | 0.27 | 0.34 | 0.27 | 0.29 | 0.29 | -12.12% | 5,380 |
| Oct 13, 2025 | 0.33 | 0.33 | 0.33 | 0.33 | 0.33 | - | 1 |
| Oct 10, 2025 | 0.33 | 0.33 | 0.33 | 0.33 | 0.33 | - | 500 |
| Oct 9, 2025 | 0.33 | 0.33 | 0.33 | 0.33 | 0.33 | -2.94% | 700 |
| Oct 8, 2025 | 0.34 | 0.34 | 0.34 | 0.34 | 0.34 | - | - |
| Oct 7, 2025 | 0.34 | 0.34 | 0.34 | 0.34 | 0.34 | 3.03% | 160 |
| Oct 6, 2025 | 0.33 | 0.34 | 0.33 | 0.33 | 0.33 | - | 7,801 |
| Oct 3, 2025 | 0.33 | 0.33 | 0.33 | 0.33 | 0.33 | -3.57% | 1,705 |
| Oct 2, 2025 | 0.35 | 0.35 | 0.29 | 0.34 | 0.34 | 15.69% | 850 |
| Oct 1, 2025 | 0.30 | 0.30 | 0.30 | 0.30 | 0.30 | -1.92% | 101 |
| Sep 30, 2025 | 0.35 | 0.35 | 0.30 | 0.30 | 0.30 | -13.33% | 392 |
| Sep 29, 2025 | 0.35 | 0.35 | 0.35 | 0.35 | 0.35 | -0.57% | 181 |
| Sep 26, 2025 | 0.33 | 0.35 | 0.33 | 0.35 | 0.35 | 16.67% | 8,025 |
| Sep 25, 2025 | 0.30 | 0.30 | 0.30 | 0.30 | 0.30 | 0.89% | 251 |
| Sep 24, 2025 | 0.27 | 0.33 | 0.27 | 0.30 | 0.30 | 2.54% | 2,417 |
| Sep 23, 2025 | 0.29 | 0.30 | 0.29 | 0.29 | 0.29 | 1.05% | 8,900 |
| Sep 22, 2025 | 0.27 | 0.29 | 0.27 | 0.29 | 0.29 | -3.37% | 1,977 |
| Sep 19, 2025 | 0.30 | 0.30 | 0.30 | 0.30 | 0.30 | - | 53 |
| Sep 18, 2025 | 0.27 | 0.33 | 0.27 | 0.30 | 0.30 | 10.00% | 29,362 |
| Sep 17, 2025 | 0.27 | 0.27 | 0.27 | 0.27 | 0.27 | - | 70 |
| Sep 16, 2025 | 0.28 | 0.28 | 0.24 | 0.27 | 0.27 | -1.82% | 72,125 |
| Sep 15, 2025 | 0.28 | 0.28 | 0.28 | 0.28 | 0.28 | -5.98% | 1,000 |
| Sep 12, 2025 | 0.29 | 0.29 | 0.27 | 0.29 | 0.29 | -2.50% | 3,426 |
| Sep 11, 2025 | 0.30 | 0.30 | 0.29 | 0.30 | 0.30 | - | 3,841 |
| Sep 10, 2025 | 0.26 | 0.30 | 0.26 | 0.30 | 0.30 | 15.38% | 3,500 |
| Sep 9, 2025 | 0.25 | 0.27 | 0.25 | 0.26 | 0.26 | -13.33% | 40,010 |
| Sep 8, 2025 | 0.30 | 0.30 | 0.30 | 0.30 | 0.30 | - | 137 |
| Sep 5, 2025 | 0.28 | 0.30 | 0.25 | 0.30 | 0.30 | 3.45% | 4,800 |
| Sep 4, 2025 | 0.28 | 0.29 | 0.28 | 0.29 | 0.29 | 3.57% | 356 |
| Sep 3, 2025 | 0.28 | 0.28 | 0.28 | 0.28 | 0.28 | - | 100 |
| Sep 2, 2025 | 0.28 | 0.28 | 0.28 | 0.28 | 0.28 | -17.65% | 600 |
| Aug 29, 2025 | 0.34 | 0.34 | 0.34 | 0.34 | 0.34 | 21.34% | 150 |
| Aug 28, 2025 | 0.32 | 0.32 | 0.28 | 0.28 | 0.28 | -3.38% | 2,150 |
| Aug 27, 2025 | 0.29 | 0.29 | 0.29 | 0.29 | 0.29 | - | 2 |
| Aug 26, 2025 | 0.29 | 0.29 | 0.29 | 0.29 | 0.29 | - | 40 |
| Aug 25, 2025 | 0.28 | 0.29 | 0.28 | 0.29 | 0.29 | -8.23% | 692 |
| Aug 22, 2025 | 0.29 | 0.32 | 0.29 | 0.32 | 0.32 | 5.33% | 1,100 |
| Aug 21, 2025 | 0.30 | 0.30 | 0.30 | 0.30 | 0.30 | - | 30 |
| Aug 20, 2025 | 0.30 | 0.30 | 0.30 | 0.30 | 0.30 | - | 2 |