In this study, we examine the effect of ESG-ranking and strong financial flexibility have on Swedish firms’ stock price during the initial stage of Russia’s invasion of Ukraine. This study is based on examining this theme during Russia's invasion of Ukraine with a time frame that lasts during the first half of 2022. The sample for this study is limited to the large index OMXS30 that is part of the Stockholm Stock Exchange. Moreover, in this paper five portfolios have been formed for this purpose, which are divided into high respectively low ESG ranking and high respectively low financial flexibility in comparison to the markets portfolio. The findings in this paper show that the portfolios with Swedish firms that have strong financial flexibility and low ESG-ranking outperform the market portfolio. Meanwhile the portfolios with Swedish firms that have high ESG-ranking and low financial flexibility underperform the market portfolio. In addition to this, the paper found that the Swedish firms with high ESG-ranking have a stable excess return and they are the safest option in terms of investments. While the Swedish firms with strong financial flexibility have high excess return but they are riskier.