Stocks in Warren Buffett's Berkshire Hathaway portfolio were mixed Monday.

Among Buffett's holdings identified in Berkshire Hathaway's latest SEC filing, 18 rose while 29 fell.

StoneCo shares (STNE) rose 88 cents, or 3.4%, to $26.75.

M&T Bank shares (MTB - Get Report) rose $1.76, or 1.07%, to $165.54.

Torchmark shares (TMK) rose 77 cents, or 0.88%, to $88.16.

Among Buffett stocks underperforming Monday, Axalta Coating Systems shares (AXTA - Get Report) fell 93.5 cents, or 3.64%, to $24.74.

Apple shares (AAPL - Get Report) fell $5.90, or 3.12%, to $183.10.

American Airlines Group shares (AAL) fell 78 cents, or 2.46%, to $30.96.

Berkshire Hathaway A shares (BRK.A - Get Report) fell $1,119.23, or 0.36534%, to $305,235.77.

Berkshire Hathaway B shares (BRK.b) fell 70 cents, or 0.34%, to $202.57.

So far this month, 11 of Buffett's stocks have gone up, while 36 have lost ground.

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