Indivior PLC was added to the S&P SmallCap 600 index effective December 22, 2025, placing the company among 600 U.S. small‑cap firms with market capitalizations between $1.2 billion and $8.0 billion. The move confirms that Indivior’s market value and liquidity have reached the threshold required for inclusion, a milestone that typically signals robust earnings and a stable trading base.
The company’s market capitalization of $4.4 billion and positive earnings over the most recent quarter and the trailing four quarters satisfied the index’s criteria. Indivior’s inclusion follows a year‑long surge in revenue, which climbed 207.8 % to $4.4 billion, driven largely by the expansion of its flagship opioid‑use‑disorder treatment, SUBLOCADE. The product’s growing market share and strong demand in the U.S. have been key contributors to the company’s financial momentum.
CEO Joe Ciaffoni said the addition “marks an important milestone for Indivior that further aligns our capital markets presence with our sharpened U.S. business profile.” He added that the company remains focused on scaling SUBLOCADE and strengthening its U.S. portfolio, underscoring the strategic intent behind the index inclusion.
The announcement was met with positive sentiment from investors, who viewed the inclusion as a validation of Indivior’s growth trajectory and a signal of continued financial health. The move is expected to broaden the company’s investor base, increase trading volume, and tighten bid‑ask spreads, thereby reducing transaction costs for shareholders.
Indivior’s inclusion in the S&P SmallCap 600 aligns with its broader strategy to strengthen market presence and attract long‑term capital. By meeting the index’s liquidity and earnings requirements, the company demonstrates its ability to sustain growth and profitability, positioning it for continued expansion in the specialty pharmaceutical sector.
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