How Many Stocks Are in the S&P500?

Traditionally, the answer is 500, as the index was constructed using the 500 largest companies. However, Google's upcoming stock dividend will change all this. As of April 3, 2014, Google is undergoing a 2:1 split via a stock dividend, as owners of record will receive an additional share -- but of a different nonvoting class stock. This means that there will be two Google share classes being traded. To keep the value in place, the S&P will retain both share classes, meaning there will now be 501 stocks in the S&P500. See article and related video here, CNBC.

The Benefit of Financial Advisors

Many individual investors believe that the primary role of a financial advisor is to "pick stocks." However, research shows that not only are active managers not able to outperform the market consistently, but that the security selection piece is really not the most important determinant of portfolio return. The key issue is asset allocation. A recent report (see article here, InvestmentNews) suggests that financial advisors can add value, but primarily from activities unrelated to security selection: determining asset allocation, helping clients avoid behavioral errors, facilitating rebalancing, reducing fees, and managing taxes and withdrawals.

High Frequency Trading and Market Efficiency

Arbitrage is, essentially, taking advantage of mispricing across (or within) markets to earn a risk-free profit. In an efficient market, such opportunities would be rare. A recent Fed report (see article here, Bloomberg) finds that high frequency traders have effectively reduced the number of arbitrage opportunities, thereby improving market efficiency.

Active vs. Passive

Market efficiency suggests that passive funds are the way to go, and average returns tend to support this. However, other investors prefer active strategies. Maybe the answer is not "either....or." As a recent Wall Street Journal article reports, both may provide benefits. See article here.