A key data point smart fund managers look at is how "crowded" a stock is in terms of institutional ownership, and UBS put together a list of the "top 10 crowded trades" in a note to clients Monday to help investors on this metric.
Bank of America Merrill Lynch's Savita Subramanian told investors in March it's more difficult for crowded stocks to move higher as everyone is already in the trade.
UBS' Shanle Wu's team aggregated all the positions from global active fund managers using FactSet institutional Ownership data. They then compared the weightings versus the "relevant equity index benchmark" to calculate the investor and active net weight percentages.
Here are the top 10 most crowded stocks, according to UBS.