Key Highlights

  • Arista Networks (NYSE:ANET) was up 10.83% to USD 188.31 after third quarter Revenue of USD 3,657.6 million, up 58.5%.
  • Navitas Semiconductor (NASDAQ:NVTS) was up 8.18% to USD 9.26 after revenue of USD 14.0 million, up 38%.
  • Ouster (NASDAQ:OUST) was up 11.56% to USD 32.33 after revenue of USD 59.3 million, up 50%.
  • Duolingo (NASDAQ:DUOL) was up 14.82% to USD 146.97 as daily active users rose 29% to 64.9 million.
  • Helport AI (NASDAQ:HPAI) was up 42.56% to USD 0.343 after a November 3 release on autonomous AI labor.

Arista Networks, Inc. (NYSE:ANET) (up USD 18.40, 10.83%): Record Quarter and Higher Fourth Quarter Guidance

Arista Networks (NYSE:ANET) was up 10.83%, or USD 18.40, to USD 188.31 in pre-market trading on November 4, 2026, against Tuesday's close of about USD 169.91 (calculated). The move followed third quarter results published on November 3, 2026. Revenue of USD 3,657.6 million was up 58.5% and came in well above the USD 3.3 billion the company had guided.

GAAP Net Income reached USD 1,560.4 million versus USD 853.0 million, and the fourth quarter outlook is revenue of USD 3.9 billion to USD 4.0 billion. Customer concentration among large cloud operators remains a risk.

Navitas Semiconductor Corporation (NASDAQ:NVTS) (up USD 0.7002, 8.18%): Revenue Growth and an AI Data Center Pivot

Navitas Semiconductor (NASDAQ:NVTS) was up 8.18%, or USD 0.7002, to USD 9.26 in pre-market trading on November 4, 2026, following third quarter results released on November 3, 2026. Revenue of USD 14.0 million was up 38% from USD 10.1 million a year earlier. Management said it expects more than 40% of fourth quarter sales to come from AI infrastructure.

Cash was USD 531.5 million at September 30, 2026, and fourth quarter revenue is guided to USD 16.0 million, plus or minus USD 0.5 million. The GAAP net loss widened to USD 37.1 million from USD 19.2 million, and the deliberate wind down of legacy mobile revenue is a risk.

Ouster, Inc. (NASDAQ:OUST) (up USD 3.35, 11.56%): Rev8 Lidar Ramp and 27,000 Sensors Shipped

Ouster (NASDAQ:OUST) was up 11.56%, or USD 3.35, to USD 32.33 in pre-market trading on November 4, 2026, against a Tuesday close of USD 28.98 (calculated). The company published third quarter results at 4:05 PM Eastern Time on November 3, 2026. Revenue of USD 59.3 million was up 50% year over year, the net loss narrowed to USD 14.2 million from USD 21.7 million, and a record 27,000 sensors shipped.

Management guided fourth quarter revenue to USD 61 million to USD 64 million. Risks include continued losses and Tariff exposure.

Duolingo, Inc. (NASDAQ:DUOL) (up USD 18.97, 14.82%): Daily Users Up 29% and Higher Full Year Profit Guidance

Duolingo (NASDAQ:DUOL) was up 14.82%, or USD 18.97, to USD 146.97 in pre-market trading on November 4, 2026. The catalyst was the third quarter 2026 results and Shareholder letter dated November 3, 2026, which showed daily active users up 29% to 64.9 million. Revenue was USD 309.0 million, up 14%.

The company guided 2026 adjusted EBITDA to USD 323 million, USD 3 million above its prior outlook, and fourth quarter bookings to USD 382 million. Adjusted EBITDA Margin narrowed to 25.5% from 29.5%, and rising AI costs are expected to pull the fourth quarter gross margin down to 72.0%.

Helport AI Limited (NASDAQ:HPAI) (up USD 0.1024, 42.56%): Autonomous AI Labor Release Is a Plausible Catalyst

Helport AI (NASDAQ:HPAI) was up 42.56%, or USD 0.1024, to USD 0.343 in pre-market trading on November 4, 2026. A company press release dated November 3, 2026 described moving a Southeast Asian Fintech customer toward autonomous AI labor, with a target of about 300 AI workforce units by the end of November 2026. The company has not tied the move to it.

First half 2026 revenue rose 7.7% to USD 17.7 million, but the company swung to a net loss of USD 1.7 million from net income of USD 1.1 million. It also filed a Form NT 20-F on November 3, a late report notice whose contents were not reviewed. As a penny stock, it carries Volatility and dilution risk.

Where Things Stand

The five stocks share an AI or technology link, but their drivers differ. Arista Networks, Navitas Semiconductor, Ouster and Duolingo moved on third quarter results with clear figures and guidance, while Helport AI moved on a release that carries no quantified financial impact. Pre-market prices can reverse once regular trading opens. Readers may watch Ouster Rev8 deliveries and the content of Helport AI's late filing notice.