Shares of Nio Inc. pulled back 1.5% in premarket trading Friday, after soaring 14.8% the previous session, which was the biggest one-day gain since it rocketed 17.4% on March. 9. Thursday’s rally in the China-based electric vehicle maker’s stock occurred despite no releases or filings from the company, and followed a 3-day losing streak in which shed 6.5% to close Wednesday at $28.25, or just above the Dec. 20 14-month closing low of $28.16. Nio’s stock has underperformed its China-based EV-make