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Thalassa Holdings ( (GB:THAL) ) just unveiled an update.
Thalassa Holdings reported a widened loss after tax of £1.37m for 2025 versus £1.01m in 2024, as book value per share declined to £0.53 from £0.62 and Investment Holdings fell to £5.9m from £7.9m. Cash reserves also decreased to £0.2m from £0.5m, although basic and diluted earnings per share improved to a loss of £0.08 from a loss of £0.13, reflecting a higher share count.
The company highlighted progress at its ARL subsidiary, with the first commercial-grade subsea node on track for completion in Q2 2026 and successful testing to 1,000 meters depth. Thalassa is actively engaging potential funding sources, strategic partners, NATO and defence contractors around this technology, positioning the group to potentially capitalise on heightened defence and security demand despite a weaker balance sheet.
Spark’s Take on THAL Stock
According to Spark, TipRanks’ AI Analyst, THAL is a Neutral.
The score is held down primarily by weak and volatile operating performance and sustained cash burn (negative operating cash flow and negative free cash flow). A strong, debt-free balance sheet provides some resilience, but technical indicators remain bearish despite oversold readings, and valuation metrics are not supportive because the negative P/E reflects ongoing losses.
To see Spark’s full report on THAL stock, click here.
More about Thalassa Holdings
Thalassa Holdings Ltd is an investment holding company listed in London, with shares quoted by Reuters as THAL.L and by Bloomberg as THAL:LN. The group manages a portfolio of financial assets, associated entities and loans, and tracks its performance using alternative measures such as Investment Holdings and book value per share to reflect its total investable asset base.
Average Trading Volume: 5,561
Technical Sentiment Signal: Sell
Current Market Cap: £3.75M
For detailed information about THAL stock, go to TipRanks’ Stock Analysis page.

