Investment

Monthly overview September | +15.2%

Oct 9, 2025

Written by

Sarah Lee

September was another turbulent month for the crypto markets.

According to the analysis by VanEck, for example, Bitcoin (+5.18%) and Ethereum (-4.94%) ended against a broad market where 23 of the 35 major tokens declined.  The total crypto market also saw periods of significant correction (-2-5%) in the last part of the month. 

For us, who were only active in Bitcoin and Ethereum, this was a month with clear market risk but with a nice result: we realized a profit of +15.2%.


What stood out to us

  • Despite the classic "September weakness" in the markets, the larger tokens showed considerable resilience; Bitcoin closed the month in the positive while Ethereum declined slightly.  

  • On the other hand, we saw sharp correction movements in the last part of the month, partly caused by liquidations and ETF flow changes.  

  • Because we focused exclusively on BTC and ETH, we benefited from the relative stability of those core assets while broader risks were emerging. That resulted in the aforementioned performance.

  • Our approach remains disciplined: we report our performance but do not provide investment advice. This overview is intended as market experience and reflection, not as a prediction.


Outlook & points of attention

With October having already begun for us, we remain alert to volatility, portfolio rotations within the crypto market, and macroeconomic signals (such as interest rates, inflation, and regulation) that may still have a significant impact. The performance of +15.2% in September is strong, but as always: the past is no guarantee for the future.

Thank you for reading, we will keep you updated on developments.

RTC Group