Disclaimer, TEVA is in a very bad financial position, with dwindling cashflows and large debt. Buffet has always been the king of "value investing", hence why a position in Teva isn't surprising from him - it's most likely that he sees the company as severely undervalued and is entering into stages of repair.
Buffet's new position in Teva was widely publicised this week:
Le informazioni ed i contenuti pubblicati non costituiscono in alcun modo una sollecitazione ad investire o ad operare nei mercati finanziari. Non sono inoltre fornite o supportate da TradingView. Maggiori dettagli nelle Condizioni d'uso.