US stock movers, Oct. 27, 2026
Stocks that beat or trailed the S&P 500 ETF (SPY) by at least 5 points in the session, with a filing or analyst action behind them or at least twice their normal volume. Closing prices from Yahoo Finance; a move with no cause in our data may be a data error.
| Stock | Change | vs SPY | Close | Volume | What we found |
|---|---|---|---|---|---|
| ARTV Artiva Biotherapeutics, Inc. | -30.7% | -31.2% | $4.27 | 19.2x normal | Read the story |
| CLW Clearwater Paper Corp | -28.8% | -29.3% | $13.69 | 12.8x normal | Read the story |
| INOD Innodata Inc | -25.3% | -25.9% | $44.74 | 9.6x normal | No cause found in our data |
| ENVX Enovix Corp | +25.0% | +24.4% | $3.35 | 2.3x normal | No cause found in our data |
| HRI Herc Holdings Inc | +22.8% | +22.2% | $156.06 | 3.4x normal | Read the story |
| MFIC MidCap Financial Investment Corp | +22.7% | +22.2% | $10.26 | 13.7x normal | Read the story |
| KNSA Kiniksa Pharmaceuticals International, plc | +22.2% | +21.7% | $89.20 | 4.0x normal | 8-K |
| PRME Prime Medicine, Inc. | +20.5% | +19.9% | $4.35 | 2.1x normal | No cause found in our data |
| ZURA Zura Bio Ltd | +19.9% | +19.4% | $4.27 | 1.5x normal | Read the story |
| JBLU Jetblue Airways Corp | +19.0% | +18.4% | $2.82 | 2.6x normal | 10-Q, 8-K |
| NAUT Nautilus Biotechnology, Inc. | +18.4% | +17.9% | $2.89 | 1.7x normal | 8-K, 10-Q |
| FLXS Flexsteel Industries Inc | -18.4% | -18.9% | $67.39 | 3.8x normal | Read the story |
| ALMU Aeluma, Inc. | +17.3% | +16.7% | $7.75 | 2.7x normal | No cause found in our data |
| CTOS Custom Truck One Source, Inc. | +16.6% | +16.1% | $10.51 | 3.1x normal | 10-Q, 8-K |
| TE T1 Energy Inc. | +16.0% | +15.5% | $2.46 | 2.0x normal | No cause found in our data |
| ALEC Alector, Inc. | +14.8% | +14.2% | $2.10 | 2.1x normal | No cause found in our data |
| NGNE Neurogene Inc. | +14.7% | +14.1% | $26.99 | 2.1x normal | No cause found in our data |
| XYL Xylem Inc. | -14.2% | -14.8% | $92.86 | 4.6x normal | 10-Q, 8-K |
| HWKN Hawkins Inc | +13.6% | +13.0% | $153.85 | 3.1x normal | 8-K, 10-Q |
| SOFI SoFi Technologies, Inc. | +13.4% | +12.9% | $16.40 | 3.9x normal | 8-K |
| OSS ONE Stop Systems, Inc. | +13.0% | +12.5% | $6.76 | 3.1x normal | No cause found in our data |
| PNR PENTAIR plc | +12.8% | +12.2% | $62.29 | 3.4x normal | 8-K |
| ABG Asbury Automotive Group Inc | +12.7% | +12.2% | $194.99 | 2.9x normal | 8-K |
| CLS Celestica Inc | +12.1% | +11.6% | $276.54 | 3.9x normal | 10-Q, 8-K |
| IMSR Terrestrial Energy Inc. /DE/ | +11.9% | +11.3% | $3.29 | 2.5x normal | No cause found in our data |
| MGNX Macrogenics Inc | +11.4% | +10.8% | $2.44 | 3.6x normal | No cause found in our data |
| EAF Graftech International Ltd | +11.1% | +10.5% | $11.83 | 3.5x normal | 8-K/A |
| BBAI BigBear.ai Holdings, Inc. | +10.8% | +10.3% | $2.35 | 2.4x normal | No cause found in our data |
| BA Boeing Co | -10.7% | -11.3% | $168.18 | 7.2x normal | 10-Q, 8-K |
| PPTA Perpetua Resources Corp. | +10.7% | +10.1% | $18.37 | 1.0x normal | 8-K |
| UNF Unifirst Corp | -10.5% | -11.0% | $250.40 | 7.1x normal | No cause found in our data |
| KALU Kaiser Aluminum Corp | +10.2% | +9.7% | $116.25 | 3.6x normal | No cause found in our data |
| CTS CTS Corp | +9.8% | +9.3% | $59.22 | 1.7x normal | 8-K, 8-K, 10-Q |
| HYMC Hycroft Mining Holding Corp | +9.8% | +9.3% | $16.90 | 1.3x normal | 10-Q, 8-K |
| GLXY Galaxy Digital Inc. | +9.6% | +9.0% | $17.18 | 1.8x normal | 8-K |
| VLO Valero Energy CORP/TX | -9.2% | -9.8% | $387.34 | 2.0x normal | No cause found in our data |
| LECO Lincoln Electric Holdings Inc | +9.2% | +8.6% | $282.37 | 2.7x normal | 10-Q, 8-K |
| EYE National Vision Holdings, Inc. | -9.0% | -9.6% | $16.20 | 2.1x normal | No cause found in our data |
| INTA Intapp, Inc. | -8.9% | -9.5% | $42.95 | 2.1x normal | No cause found in our data |
| CLYM Climb Bio, Inc. | +8.6% | +8.1% | $9.57 | 4.0x normal | No cause found in our data |
| AMKR Amkor Technology, Inc. | +8.5% | +7.9% | $39.94 | 3.4x normal | 8-K, 10-Q, Needham note |
| AIT Applied Industrial Technologies Inc | -8.3% | -8.9% | $297.58 | 2.8x normal | 8-K |
| SSMR Sunshine Silver Mining & Refining Co | +8.3% | +7.8% | $14.18 | 6.4x normal | No cause found in our data |
| FLEX Flex Ltd. | +8.3% | +7.7% | $83.35 | 2.7x normal | B of A Securities note |
| GWRE Guidewire Software, Inc. | -8.1% | -8.6% | $169.15 | 1.5x normal | 8-K |
| SXC SunCoke Energy, Inc. | +8.0% | +7.4% | $10.59 | 1.8x normal | 8-K, 10-Q |
| ITRI Itron, Inc. | +7.8% | +7.2% | $94.55 | 2.2x normal | 8-K, 10-Q |
| EEFT Euronet Worldwide, Inc. | -7.7% | -8.3% | $59.01 | 3.7x normal | 8-K |
| GRAL GRAIL, Inc. | +7.7% | +7.1% | $150.61 | 2.1x normal | No cause found in our data |
| WVE Wave Life Sciences, Inc. | +7.5% | +6.9% | $3.45 | 1.3x normal | 10-Q, 8-K |
| AAOI Applied Optoelectronics, Inc. | +7.0% | +6.4% | $76.95 | 0.8x normal | Needham note |
| TLS Telos Corp | +6.9% | +6.3% | $5.58 | 2.0x normal | No cause found in our data |
| RHI Robert Half Inc. | -6.7% | -7.3% | $41.96 | 2.1x normal | No cause found in our data |
| NVA Nova Minerals Corp | +6.7% | +6.2% | $3.18 | 1.4x normal | 8-K |
| CDNS Cadence Design Systems Inc | +6.5% | +5.9% | $343.08 | 2.0x normal | 8-K, Needham note, Baird note |
| COHR Coherent Corp. | +6.5% | +5.9% | $235.79 | 0.9x normal | Needham note |
| OLMA Olema Pharmaceuticals, Inc. | +6.3% | +5.8% | $7.04 | 2.0x normal | No cause found in our data |
| AGYS Agilysys Inc | -6.2% | -6.8% | $115.81 | 2.5x normal | 8-K, 10-Q, Piper Sandler note, Needham note |
| TWFG TWFG, Inc. | -6.1% | -6.7% | $27.25 | 7.0x normal | No cause found in our data |
| ARE Alexandria Real Estate Equities, Inc. | -5.8% | -6.4% | $40.86 | 1.6x normal | 10-Q, 8-K |
| WELL Welltower Inc. | -5.8% | -6.3% | $226.72 | 2.6x normal | 8-K |
| UPS United Parcel Service Inc | +5.8% | +5.2% | $106.09 | 2.5x normal | 8-K |
| FCFS FirstCash Holdings, Inc. | +5.8% | +5.2% | $185.35 | 2.8x normal | No cause found in our data |
| AWI Armstrong World Industries Inc | -5.7% | -6.3% | $155.36 | 5.5x normal | 8-K, 10-Q |
| JCI Johnson Controls International plc | +5.7% | +5.1% | $155.88 | 1.9x normal | 8-K |
| HUBB Hubbell Inc | -5.5% | -6.0% | $434.28 | 3.6x normal | 8-K |
| NE Noble Corp plc | -5.4% | -6.0% | $45.22 | 2.5x normal | 10-Q, 8-K |
| TRU TransUnion | -5.3% | -5.8% | $75.42 | 1.5x normal | 8-K |