Join

Reports · premarket movers

Pre-market movers - August 20, 2026

FIXX leads gainers at +1413.65%; XOSWW leads losers at -60.00%. Full top-10 gainers and losers before the US open.

Here is how US equities are shaping up pre-market on August 20, 2026. The names below show the widest percentage moves against yesterday's close, giving a quick read on where retail and institutional attention is concentrating before the opening bell.

Homology Medicines Inc. (FIXX) leads pre-market gainers, climbing +1413.65% to $14.15. MRNX at +352.09% and TNONW at +185.71% round out the early movers. The remaining 7 names in the top 10 are up an average of 134.70% heading into the open.

XOSWW leads pre-market losers, falling +60.00% to $0.00. PFSA at -50.62% and MUA.RT at -47.92% round out the early movers. The remaining 7 names in the top 10 are down an average of 40.07% heading into the open.

Pre-market action does not always carry into the regular session - gaps often fade once liquidity returns - but outsized moves here frequently trace back to overnight filings, earnings, analyst actions, or macro headlines worth checking on each ticker's wire.

Top gainers

  1. 01FIXXHomology Medicines Inc.
    $14.15+1413.65%
  2. 02MRNX
    $141.64+352.09%
  3. 03TNONW
    $0.02+185.71%
  4. 04MRNAModerna Inc.
    $174.38+176.97%
  5. 05ZSTKZeroStack Corp.
    $4.96+169.55%
  6. 06MRNY
    $42.00+169.23%
  7. 07YJYunji Inc.
    $4.25+144.25%
  8. 08TNONTenon Medical Inc.
    $11.41+109.36%
  9. 09ASTLW
    $0.01+89.71%
  10. 10SPWRW
    $0.06+83.81%

Top losers

  1. 01XOSWW
    $0.00-60.00%
  2. 02PFSAProfusa Inc.
    $13.57-50.62%
  3. 03MUA.RT
    $0.00-47.92%
  4. 04LGCLLucas GC Limited
    $0.13-46.96%
  5. 05IPSTIP Strategy Holdings Inc.
    $8.45-46.38%
  6. 06WYFL
    $6.13-42.01%
  7. 07KWMK Wave Media Ltd.
    $1.64-37.88%
  8. 08WETOWetour Robotics Limited
    $20.76-37.09%
  9. 09SNSC
    $1.31-35.47%
  10. 10XOSXos Inc.
    $2.90-34.68%

Follow every ticker's wire activity in real time on Quantisnow.