JPMorgan Chase increased its holdings in Nio by about 6 million shares, or 378 percent, compared with the end of the third quarter.

Among China's leading electric vehicle makers, Nio, which was the worst performer in the fourth quarter of last year, saw a position increase from JPMorgan Chase at the time.

As of December 31, JPMorgan held 7.64 million ADRs in Nio, worth about $240 million, according to the bank's 13F filing with the SEC on February 11.

JPMorgan Chase's holdings in Nio increased by about 6 million shares, or 378 percent, compared with about 1.6 million shares at the end of the third quarter last year.

In addition to holding Nio's ADRs, JPMorgan Chase also holds Nio's options and bonds.

The latest filing shows that JPMorgan Chase held 420,200 put options of Nio worth about $13.3 million as of December 31, down about 0.6 percent from 422,900 at the end of the third quarter.

The bank also held about 2.2 million Nio bonds at the end of last year, the same amount as at the end of the third quarter. The latest value of these bonds was $7.18 million.

JPMorgan Chase reduced its position in Xpeng by about 25 percent in the fourth quarter, from 2.58 million shares at the end of the third quarter to 1.94 million shares at the end of last year.

The bank did not hold any options or bonds on Xpeng at the end of the third quarter, although it did hold 100,000 Xpeng call options worth about $5 million at the end of the fourth quarter.

JPMorgan Chase also reduced its holdings in Li Auto by 13.5 percent in the fourth quarter, from about 2.3 million shares to 1.98 million shares.

The bank held 4,000 Li Auto call options worth about $100,000 in the third quarter, and by the end of the fourth quarter the number of these options was unchanged, but their value increased to $128,000.

In the fourth quarter of last year, Nio fell 11 percent, Xpeng rose 41.6 percent and Li Auto gained 22 percent.