Quint Tatro considers himself "generally bullish" in believing markets can hit new all-time highs as early as the summer. The reason? Quint says there's a "big time tailwind" he thinks investors aren't factoring in. In his stock picks, he sees Snowflake (SNOW) posting a "blockbuster" earnings report that can follow suit with ServiceNow (NOW). He also favors Tesla's (TSLA) long-term prospects.