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In the past week (September 14–18, 2026), TASA4 (+23.24%) topped the ranking of biggest gainers, closing at R$ 8.06, while ASAI3 (+6.54%) and CYRE3 (+5.29%) also advanced among the period’s top positive highlights.
Among the stocks with corporate news, ASAI3 approved the buyback of R$ 200 million in debentures and announced the acquisition of 18 gas stations for up to R$ 80 million, while CYRE3 saw Invesco reach a 5% stake in the company’s capital. In addition to these, QUAL3 (+10.00%), ARML3 (+10.00%), CASH3 (+7.91%), AURE3 (+7.11%), YDUQ3 (+6.85%), VAMO3 (+6.48%) and ECOR3 (+5.48%) also ranked among the week’s top gainers.
| Stock | Company | Sector | Change | Close |
|---|---|---|---|---|
| TASA4 | TAURUS ARMAS | Capital Goods | +23.24% | R$ 8,06 |
| QUAL3 | QUALICORP | Healthcare | +10.00% | R$ 1,65 |
| ARML3 | ARMAC | Capital Goods | +10.00% | R$ 4,07 |
| CASH3 | MELIUZ | Information Technology | +7.91% | R$ 5,73 |
| AURE3 | AUREN | Utilities | +7.11% | R$ 12,35 |
| YDUQ3 | YDUQS PART | Consumer Discretionary | +6.85% | R$ 10,60 |
| ASAI3 | ASSAI | Consumer Staples | +6.54% | R$ 10,26 |
| VAMO3 | VAMOS | Consumer Discretionary | +6.48% | R$ 3,45 |
| ECOR3 | ECORODOVIAS | Transportation and Logistics | +5.48% | R$ 8,27 |
| CYRE3 | CYRELA REALT | Consumer Discretionary | +5.29% | R$ 26,67 |
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