US stock movers, Oct. 21, 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 |
|---|---|---|---|---|---|
| AVEX AEVEX Corp. | -32.5% | -33.0% | $9.68 | 8.9x normal | No cause found in our data |
| BETR Better Home & Finance Holding Co | +30.2% | +29.6% | $15.58 | 2.8x normal | No cause found in our data |
| NCPL Netcapital Inc. | -22.3% | -22.8% | $1.57 | 0.8x normal | 8-K |
| TKNO Alpha Teknova, Inc. | -20.8% | -21.4% | $5.85 | 19.7x normal | 424B5 |
| INO Inovio Pharmaceuticals, Inc. | -20.8% | -21.3% | $0.80 | 4.0x normal | No cause found in our data |
| RCUS Arcus Biosciences, Inc. | -19.6% | -20.1% | $19.10 | 3.3x normal | Wedbush note, Truist Securities note |
| NUAI New ERA Energy & Digital, Inc. | +17.7% | +17.2% | $3.32 | 2.5x normal | No cause found in our data |
| RAPP Rapport Therapeutics, Inc. | -14.7% | -15.2% | $25.06 | 6.7x normal | Guggenheim note |
| MDXG Mimedx Group, Inc. | -11.6% | -12.1% | $3.74 | 2.5x normal | No cause found in our data |
| ELMT Elmet Group Co. | +11.5% | +11.0% | $21.23 | 1.4x normal | 8-K |
| IART Integra Lifesciences Holdings Corp | -11.2% | -11.7% | $11.84 | 2.1x normal | 8-K |
| RCEL AVITA Medical, Inc. | +10.8% | +10.3% | $15.29 | 2.6x normal | No cause found in our data |
| WGO Winnebago Industries Inc | +10.7% | +10.1% | $25.64 | 3.3x normal | 8-K |
| LAD Lithia Motors Inc | -10.2% | -10.7% | $269.13 | 3.5x normal | 8-K |
| FUN Six Flags Entertainment Corporation/NEW | -10.1% | -10.6% | $7.07 | 3.2x normal | Guggenheim note |
| SMCI Super Micro Computer, Inc. | +9.6% | +9.0% | $35.57 | 2.5x normal | 8-K, Rosenblatt note |
| APPN Appian Corp | +9.5% | +9.0% | $48.73 | 2.3x normal | No cause found in our data |
| CRL Charles River Laboratories International, Inc. | +9.3% | +8.8% | $344.87 | 3.2x normal | No cause found in our data |
| CTBI Community Trust Bancorp Inc /KY/ | -9.3% | -9.8% | $68.33 | 3.1x normal | 8-K |
| EROC ERock, Inc. | +8.8% | +8.3% | $9.41 | 2.0x normal | No cause found in our data |
| DUOT Duos Technologies Group, Inc. | +8.4% | +7.9% | $6.29 | 2.0x normal | No cause found in our data |
| MHO M/I Homes, Inc. | -8.1% | -8.6% | $114.04 | 4.7x normal | 8-K |
| ZS Zscaler, Inc. | +7.8% | +7.3% | $231.33 | 1.1x normal | DA Davidson initiation |
| SPCX Space Exploration Technologies Corp | +7.8% | +7.3% | $159.31 | 2.8x normal | 8-K, Cantor Fitzgerald note, TD Cowen note, Susquehanna note |
| WFRD Weatherford International plc | +7.8% | +7.2% | $85.49 | 2.8x normal | 8-K |
| GPI Group 1 Automotive Inc | -7.5% | -8.0% | $224.85 | 0.8x normal | 8-K |
| GLXY Galaxy Digital Inc. | +7.4% | +6.9% | $16.93 | 2.1x normal | No cause found in our data |
| SSMR Sunshine Silver Mining & Refining Co | +7.0% | +6.5% | $13.28 | 2.1x normal | No cause found in our data |
| TTMI TTM Technologies Inc | +7.0% | +6.4% | $102.15 | 2.0x normal | No cause found in our data |
| T AT&T Inc. | -6.5% | -7.0% | $21.91 | 2.3x normal | 8-K |
| MEDP Medpace Holdings, Inc. | +6.4% | +5.9% | $662.48 | 4.1x normal | No cause found in our data |
| FISN Deep Fission, Inc. | -6.4% | -6.9% | $2.63 | 2.1x normal | No cause found in our data |
| DXCM Dexcom Inc | -6.4% | -6.9% | $80.26 | 2.6x normal | No cause found in our data |
| BH Biglari Holdings Inc. | -6.3% | -6.8% | $414.29 | 2.1x normal | No cause found in our data |
| DFH Dream Finders Homes, Inc. | -5.9% | -6.5% | $9.02 | 1.5x normal | 8-K |
| TRNS Transcat Inc | +5.6% | +5.1% | $86.31 | 2.1x normal | No cause found in our data |
| NFLX Netflix Inc | -5.3% | -5.8% | $65.04 | 2.8x normal | 8-K, B of A Securities note, Needham downgrade, Rosenblatt note, Bernstein note, Wedbush note, Guggenheim note, Barclays note |
| CMG Chipotle Mexican Grill Inc | -5.2% | -5.7% | $28.12 | 1.6x normal | TD Cowen downgrade, Wells Fargo note |