Alector, Inc. (ALEC)
NASDAQ: ALEC · Real-Time Price · USD
3.320
+0.160 (5.06%)
At close: Oct 3, 2025, 4:00 PM EDT
3.330
+0.010 (0.29%)
After-hours: Oct 3, 2025, 7:43 PM EDT
Alector Stock Price History
Historical Data
| Date | Open | High | Low | Close | Adj. Close | Change | Volume |
|---|---|---|---|---|---|---|---|
| Oct 3, 2025 | 3.19 | 3.33 | 3.11 | 3.32 | 3.32 | 5.06% | 2,589,120 |
| Oct 2, 2025 | 3.00 | 3.17 | 2.97 | 3.16 | 3.16 | 5.33% | 1,069,700 |
| Oct 1, 2025 | 2.86 | 3.03 | 2.84 | 3.00 | 3.00 | 1.35% | 1,028,582 |
| Sep 30, 2025 | 3.00 | 3.05 | 2.83 | 2.96 | 2.96 | -2.95% | 964,940 |
| Sep 29, 2025 | 3.09 | 3.16 | 3.01 | 3.05 | 3.05 | -1.61% | 555,897 |
| Sep 26, 2025 | 2.94 | 3.16 | 2.92 | 3.10 | 3.10 | 5.80% | 1,024,457 |
| Sep 25, 2025 | 3.10 | 3.20 | 2.88 | 2.93 | 2.93 | -7.28% | 1,095,043 |
| Sep 24, 2025 | 3.17 | 3.28 | 3.12 | 3.16 | 3.16 | -0.63% | 576,227 |
| Sep 23, 2025 | 3.17 | 3.28 | 3.12 | 3.18 | 3.18 | - | 949,205 |
| Sep 22, 2025 | 2.97 | 3.26 | 2.95 | 3.18 | 3.18 | 4.95% | 1,113,351 |
| Sep 19, 2025 | 3.15 | 3.15 | 3.01 | 3.03 | 3.03 | -3.19% | 2,304,806 |
| Sep 18, 2025 | 3.00 | 3.17 | 2.92 | 3.13 | 3.13 | 6.10% | 708,580 |
| Sep 17, 2025 | 2.77 | 3.18 | 2.76 | 2.95 | 2.95 | 6.88% | 1,322,444 |
| Sep 16, 2025 | 2.95 | 2.98 | 2.75 | 2.76 | 2.76 | -6.76% | 581,567 |
| Sep 15, 2025 | 2.75 | 2.96 | 2.71 | 2.96 | 2.96 | 7.64% | 924,972 |
| Sep 12, 2025 | 2.84 | 2.96 | 2.74 | 2.75 | 2.75 | -4.18% | 6,128,211 |
| Sep 11, 2025 | 2.85 | 3.00 | 2.78 | 2.87 | 2.87 | 1.06% | 436,445 |
| Sep 10, 2025 | 2.78 | 2.88 | 2.76 | 2.84 | 2.84 | 1.43% | 867,993 |
| Sep 9, 2025 | 2.75 | 2.85 | 2.71 | 2.80 | 2.80 | 1.45% | 673,950 |
| Sep 8, 2025 | 3.00 | 3.00 | 2.74 | 2.76 | 2.76 | -8.31% | 1,266,674 |
| Sep 5, 2025 | 2.83 | 3.07 | 2.83 | 3.01 | 3.01 | 6.74% | 1,658,380 |
| Sep 4, 2025 | 2.79 | 2.90 | 2.71 | 2.82 | 2.82 | 1.08% | 1,039,133 |
| Sep 3, 2025 | 2.62 | 2.86 | 2.62 | 2.79 | 2.79 | 7.72% | 1,555,399 |
| Sep 2, 2025 | 2.30 | 2.65 | 2.30 | 2.59 | 2.59 | 10.21% | 1,750,060 |
| Aug 29, 2025 | 2.39 | 2.44 | 2.31 | 2.35 | 2.35 | -1.67% | 465,077 |
| Aug 28, 2025 | 2.42 | 2.51 | 2.38 | 2.39 | 2.39 | -0.42% | 712,935 |
| Aug 27, 2025 | 2.36 | 2.55 | 2.33 | 2.40 | 2.40 | 1.69% | 683,803 |
| Aug 26, 2025 | 2.34 | 2.41 | 2.31 | 2.36 | 2.36 | 0.85% | 625,614 |
| Aug 25, 2025 | 2.53 | 2.56 | 2.33 | 2.34 | 2.34 | -7.14% | 841,400 |
| Aug 22, 2025 | 2.29 | 2.56 | 2.29 | 2.52 | 2.52 | 11.01% | 1,343,977 |
| Aug 21, 2025 | 2.19 | 2.29 | 2.09 | 2.27 | 2.27 | 3.18% | 677,949 |
| Aug 20, 2025 | 2.15 | 2.23 | 2.03 | 2.20 | 2.20 | 1.85% | 1,290,107 |
| Aug 19, 2025 | 2.09 | 2.29 | 2.09 | 2.16 | 2.16 | 1.41% | 1,404,291 |
| Aug 18, 2025 | 2.24 | 2.32 | 2.10 | 2.13 | 2.13 | -5.33% | 1,392,705 |
| Aug 15, 2025 | 2.45 | 2.45 | 2.22 | 2.25 | 2.25 | -8.54% | 1,610,659 |
| Aug 14, 2025 | 2.14 | 2.50 | 2.13 | 2.46 | 2.46 | 12.84% | 2,445,303 |
| Aug 13, 2025 | 2.02 | 2.23 | 2.01 | 2.18 | 2.18 | 9.00% | 1,549,461 |
| Aug 12, 2025 | 2.25 | 2.30 | 1.99 | 2.00 | 2.00 | -10.31% | 1,725,358 |
| Aug 11, 2025 | 2.20 | 2.42 | 2.11 | 2.23 | 2.23 | 3.72% | 4,210,220 |
| Aug 8, 2025 | 1.63 | 2.22 | 1.54 | 2.15 | 2.15 | 47.26% | 8,927,432 |
| Aug 7, 2025 | 1.43 | 1.47 | 1.42 | 1.46 | 1.46 | 2.10% | 651,832 |
| Aug 6, 2025 | 1.57 | 1.57 | 1.43 | 1.43 | 1.43 | -8.33% | 518,435 |
| Aug 5, 2025 | 1.56 | 1.60 | 1.51 | 1.56 | 1.56 | 0.65% | 603,534 |
| Aug 4, 2025 | 1.45 | 1.55 | 1.44 | 1.55 | 1.55 | 6.90% | 487,370 |
| Aug 1, 2025 | 1.47 | 1.49 | 1.42 | 1.45 | 1.45 | -2.68% | 737,122 |
| Jul 31, 2025 | 1.60 | 1.64 | 1.47 | 1.49 | 1.49 | -6.88% | 651,233 |
| Jul 30, 2025 | 1.63 | 1.73 | 1.56 | 1.60 | 1.60 | -0.62% | 657,189 |
| Jul 29, 2025 | 1.79 | 1.81 | 1.60 | 1.61 | 1.61 | -8.52% | 627,610 |
| Jul 28, 2025 | 1.91 | 2.00 | 1.76 | 1.76 | 1.76 | - | 1,221,630 |
| Jul 25, 2025 | 1.80 | 1.80 | 1.74 | 1.76 | 1.76 | -1.68% | 297,049 |