Offer your thoughts or opinion on the input financial query or topic using your financial background.

Are stock investments less favorable for the smaller investor? 
If you are looking at long-term investments then you can look to Dheer's answer and see that it doesn't matter whether the money is large or small, the return will be the same.  When it comes to shorter-term investments, it can actually pay to be a smaller investor. Consider a stock that may not be trading in high volume. If I want to take a position for 2,000 shares, I can probably buy it quite quickly without moving the market considerably.  If I was managing your hypothetical portfolio opening a position for 1,000,000 shares, it can cause the price to go up significantly because I have to execute the order very carefully in order to not tip my hand to the market that I want a million shares.  Algorithmic traders will see the volume increasing on those shares and will raise their asking price. High speed traders and market makers will also cause a lot of purchasing overhead. Then later when it comes time to sell, I will lose a percentage to the price drop as I start flooding the market with available shares.