Warren Buffett's Berkshire Hathaway Inc. /zigman2/quotes/208872451/composite BRK.A +0.37% /zigman2/quotes/200060694/composite BRK.B +0.07% unloaded more than a quarter of its stake in Wells Fargo & Co. /zigman2/quotes/203790192/composite WFC +0.08% and about 61% of its position in JPMorgan Chase /zigman2/quotes/205971034/composite JPM -0.21% , while acquiring a new position in Barrick Gold Corp. /zigman2/quotes/201432642/composite GOLD -0.86% , according to 13F filings with the Securities and Exchange Commission for the period ended Jun 30, that were released Friday afternoon. Berkshire's moves appeared to reflect a broad lightening of the conglomerates exposure to large-capitalization banks during the worst public health crisis in generations. Berkshire sold 85.6 million shares of Wells Fargo, representing about 26% of its stake and putting its ownership to about 3% from 5.3%. The insurance conglomerate also shed 35.5 million shares of JPMorgan, 61% of its position, which now represents 1% of Berkshire's overall portfolio from 3% in the prior period. Meanwhile, the investment firm acquired nearly 21 million shares of Barrick Gold worth $563 million, representing 0.3% of Berkshire's holding. Berkshire also reduced its holding in PNC Financial Services /zigman2/quotes/203416310/composite PNC -0.11% , selling 3.85 million shares to cut its position to 0.3% from 0.5%. The insurance conglomerate boosted its stake in grocery chain Kroger Co. /zigman2/quotes/206215053/composite KR +2.15% by 15%, purchasing 3 million shares. The report also showed that Buffett's firm dumped its entire stakes in Goldman Sachs /zigman2/quotes/209237603/composite GS +0.02% , Occidental Petroleum Corp. /zigman2/quotes/207018272/composite OXY -1.77% , as well as consummating an exodus of airline companies, including American Airlines Group Inc. /zigman2/quotes/209207041/composite AAL -3.23% , Delta Air Lines /zigman2/quotes/200327741/composite DAL -3.30% United Airlines /zigman2/quotes/205037281/composite UAL -3.61% and Southwest Airlines Co. /zigman2/quotes/201071949/composite LUV -1.41% . Berkshire didn't change its holdings in Apple Inc. /zigman2/quotes/202934861/composite AAPL -3.17% , where the firm owns at 245.156 million shares. Large investors must disclose long stock positions held at the end of a quarter 45 days later in a 13F filing with the SEC, which means such filings are merely a snapshot of an investor holdings at a given point. Berkshire Class A and B shares are down by about 0.6% and 0.5% at Friday's close. Meanwhile, shares of Wells Fargo were down 0.8% in after-hours trade on Friday, JPMorgan shares edged 0.1% lower, while Barrick's stock was up 3.9% after Friday's closing bell. The Dow Jones Industrial Average /zigman2/quotes/210598065/realtime DJIA -0.88% booked a meager gain on the day, while the S&P 500 index /zigman2/quotes/210599714/realtime SPX -1.12% and technology-laden Nasdaq Composite Index /zigman2/quotes/210598365/realtime COMP -1.07% closed in negative territory. However, all three benchmarks booked weekly gains.