Wall Street has been witnessing an impressive bull run in the past 18 months. Year to date, — the three major stock indexes — the Dow, the S&P 500 and the Nasdaq Composite — have advanced 4.2%, 17.6% and 24.8%, respectively. The mid-cap-centric S&P 400 is up 4.2%. However, the small-cap specific Russell 2000 has gained a mere 0.8%, while the other benchmark — the S&P 600 — is down 2.3%, year to date.U.S. small businesses are still suffering from high inflation and interest rates. On May 2, the CNBC|SurveyMo ...