OKLO Stock Gains Pre-Market After Siemens Signs On To Design Key System For Aurora Nuclear Reactor

The power conversion system is one of the key long-lead items needed before the Aurora Powerhouse small modular reactor can begin operations.
In this photo illustration, a person holds a smartphone displaying the logo of Oklo Inc.
In this photo illustration, a person holds a smartphone displaying the logo of Oklo Inc.(Photo illustration by Cheng Xin/Getty Images)
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Arnab Paul·Stocktwits
Updated Mar 05, 2026   |   2:29 PM EST
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  • Siemens Energy will conduct engineering activities for a condensing SST-600 steam turbine, generator, and related auxiliary systems for the Aurora facility.
  • The power conversion system is one of the key long-lead items needed before the Aurora Powerhouse SMR can begin operations.
  • OKLO’s YTD gains stand at 355%.

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Shares of Oklo Inc. (OKLO) rose 6% in premarket trade on Wednesday, after the company signed an agreement with Siemens Energy, under which Siemens will design the power conversion system for Oklo’s Aurora advanced fission powerhouse.

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Siemens Energy will conduct detailed engineering activities for a condensing SST-600 steam turbine, generator, and related auxiliary systems for Oklo’s Aurora facility at Idaho National Laboratory. The power conversion system is one of the key long-lead items needed before the Aurora Powerhouse small modular reactor (SMR) can begin operations.

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“Aurora’s inherent safety allows us to use proven, commercially available power systems like Siemens Energy’s turbine technology. That design philosophy shortens timelines, lowers costs, and turns advanced nuclear into a deployable product,” said Alex Renner, Oklo’s Chief Product Officer.

How Did Stocktwits Users React?

Despite the strong intraday gains, retail sentiment on Stocktwits fell to 'neutral' from 'bearish' a day earlier.

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OKLO's Sentiment Meter and Message Volumes on November 19, 2025 | Source: Stocktwits

One user believes the company could be a key energy player.

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Oklo’s stock has seen strong buying interest so far this year, gaining a staggering 355%.

Also See: Dycom Bets Big On Data Centres With $1.95 Billion Power Solutions Acquisition

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