I have a few thousand dollars in savings and just started investing this week. I put $1,500 into NVIDIA and $1,500 into Palantir because I want my money to grow quickly and plan to hold them for a year or two to take advantage of their current growth. The remaining $3,000 is spread across SCHD, SCHG, QQQM, VOO, VUG, and Costco. Is this portfolio too risky?