Activist Investor Effissimo Now Tamron's Largest Shareholder

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Activist Investor Effissimo Now Tamron's Largest Shareholder

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Singapore activist fund Effissimo Capital Management has overtaken Sony as Tamron's largest shareholder, holding 17.38% against Sony's unchanged 15.35% as of April 2026 filings. Effissimo has a track record of pushing structural changes at Japanese companies where it takes significant positions.

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