Stocks Making Big Moves Yesterday: Nu Holdings, Fair Isaac, Lumentum, MercadoLibre and DoorDash

**Nu Holdings (NU)**, -17.0%: The Brazil-based owner of the digital bank Nubank had its biggest drop in a year after President Luiz Inácio Lula da Silva won Sunday’s runoff, a result investors had bet against, and Brazil’s Bovespa index fell 13.88%, its worst day since March 2020. Full story

**Fair Isaac (FICO)**, -13.2%: The company behind the FICO credit score was the worst performer in the S&P 500 after Wells Fargo cut it to Equal Weight, because Fair Isaac is holding its mortgage score price at $10 for lenders who commit to its score, which removes the price increases the bank had expected in 2027. Full story

**Lumentum (LITE)**, +8.2%: The maker of optical parts for AI data centers was the best performer in the S&P 500 after StoneX started covering the stock with a Buy rating and a $1,200 price target, Benzinga reported, on a day when Anthropic’s IPO filing lifted chip and AI-hardware stocks.

**MercadoLibre (MELI)**, -7.8%: The online marketplace and payments company, whose biggest market is Brazil, fell with the rest of the country’s stocks after Lula’s win, as the real ended about 8% weaker against the dollar, which shrinks the dollar value of its Brazilian sales. Full story

**DoorDash (DASH)**, -6.1%: The delivery app fell after The Wall Street Journal reported it is in advanced talks to buy grocery-delivery rival Instacart; a source told Reuters the deal would value Instacart at about $17 billion and could be finalized as soon as Wednesday. Full story