Top movers in Friday's after hours session
By Mill Chart
Last update: Dec 19, 2025
Discover the top movers in Friday's after-hours session and stay informed about the post-market dynamics.
After hours gainers
| Ticker | Change | Comment |
|---|---|---|
| YMAT | 20.41% | J-STAR HOLDING CO LTD-A's (NASDAQ:YMAT) stock price increased by 20.41% to $0.78. In the last month the stock lost 21.68%. |
| PRPH | 15.94% | In the after-hours session on Friday, PROPHASE LABS INC (NASDAQ:PRPH) experienced a notable 15.94% increase, driving its shares to $0.1. After experiencing a -14.65% decline earlier today, PRPH shows signs of a rebound in today's after-hours session. |
| IRBT | 12.35% | Positive after-hours movement for IROBOT CORP (NASDAQ:IRBT) as its shares recorded a 12.35% increase, reaching $0.52 during Friday's after-hours session. After today's drop of -30.05%, it looks like it is bouncing back during today's after hours session. |
| AIIO | 8.78% | Impressive after-hours gains for ROBO.AI INC (NASDAQ:AIIO) as its stock price advanced 8.78% to $0.34 during Friday's after-hours session. Yesterday's -34.37% decline in AIIO has given way to a potential bounce-back as observed in today's after-hours session. |
| GLE | 8.2% | GLOBAL ENGINE GROUP HOLDIN-A's (NASDAQ:GLE) shares rose 8.2% to $0.5. Shareholders saw the stock price going 47.43% lower in the past 3 months. |
| YCBD | 7.95% | CBDMD INC's (NYSEARCA:YCBD) shares rose 7.95% to $1.63 during Friday's after hours session. Only today these shares were declining by -21.76%, so we see a bit of recovery during the after hours session. |
| ELPW | 6.69% | Impressive after-hours gains for ELONG POWER HOLDING-A (NASDAQ:ELPW) as its stock price advanced 6.69% to $0.17 during Friday's after-hours session. The stock is trading 20.24% lower than a month ago. |
| VMAR | 6.63% | Impressive after-hours gains for VISION MARINE TECHNOLOGIES (NASDAQ:VMAR) as its stock price advanced 6.63% to $0.27 during Friday's after-hours session. In the last month the share price dropped with 77.24%. |
| RKLB | 5.23% | After the regular session, ROCKET LAB CORP (NASDAQ:RKLB) continues to impress in the after-hours session, with a 5.23% increase to $74.21. Today's gain of 17.69% continues in today's after hours session with 5.23%. Earlier today the company had a press release: Rocket Lab Awarded $816M Prime Contract to Build Missile- Defense Satellite Constellation for U.S. Space Force. |
| ASTI | 5.2% | ASCENT SOLAR TECHNOLOGIES (NASDAQ:ASTI) rose 5.2% to $4.45 during Friday's after hours session. Building upon today's 37.79% gain, ASTI demonstrates resilience and ongoing growth in the after-hours session. |
To see the full list of after hours gainers you can use our after hours gainers page.
After hours losers
| Ticker | Change | Comment |
|---|---|---|
| AMST | -15.79% | AMESITE INC's (NASDAQ:AMST) stock price is declining with 15.79% to a price of $2.24. Despite a strong 17.18% gain earlier today, AMST is experiencing a reversal in after-hours trading, with prices declining by 15.79%. |
| IBO | -12.48% | IMPACT BIOMEDICAL INC's (NYSEARCA:IBO) shares fell 12.48% to $0.57. The positive momentum earlier in the day is waning as IBO retraces 46.26% during the after-hours session. |
| BYSI | -10.21% | Following a 25.67% loss in the regular session, BEYONDSPRING INC (NASDAQ:BYSI) exhibits further decline during today's after-hours session. Price movements remain volatile as BYSI gives back 25.67% of its earlier gains in the after-hours session. |
| VIVK | -9.66% | VIVAKOR INC's (NASDAQ:VIVK) stock price is declining with 9.66% to a price of $0.07. The stock is trading 35.78% lower than a month ago. |
| GPUS | -9.41% | HYPERSCALE DATA INC's (NYSEARCA:GPUS) stock price is showing a decline of 9.41% to a price of $0.23 during the after-hours session. In the last month the share price increased with 23.25%. |
| SGD | -8.94% | Today's after-hours session sees a continuation of the 42.26% decrease earlier in the day for SAFE & GREEN DEVELOPMENT COR (NASDAQ:SGD). After running up 42.26% in today's session, SGD is pulling back after hours. |
| LAZR | -8.24% | Price volatility persists as LUMINAR TECHNOLOGIES INC (NASDAQ:LAZR) closed the regular session with a 175.0% loss, and the downward trend continues in the after-hours session. Today's after-hours session indicates a reversal in LAZR's earlier 175.0% gain, with prices exhibiting heightened volatility. |
| ZYXI | -8.1% | ZYNEX INC's (NASDAQ:ZYXI) shares fell 8.1% to $0.27 during Friday's after hours session. In the last month the share price dropped with 38.39%. |
| UGRO | -7.97% | URBAN-GRO INC's (NASDAQ:UGRO) shares fell 7.97% to $0.33 during Friday's after hours session. In the last month the stock gained 53.91%. |
| BIYA | -7.22% | The after-hours session reflects BAIYA INTERNATIONAL GROUP IN (NASDAQ:BIYA)'s ongoing correction after experiencing a %ABSPERF% loss in the regular trading hours. In the last month the share price dropped with 27.01%. |
To see the full list of after hours losers you can use our after hours losers page.
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