One of Wall Street's biggest bulls is turning cautious on stocks

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Alico, Inc. (NYSE: LCO) Delayed: 28.58 +0.02 (0.07%)
Previous Close $28.56    52 Week High $4.99 
Open $28.58    52 Week Low $1.83 
Day High $28.58    P/E N/A 
Day Low $28.58    EPS $-1.37 
Volume      

PowerShares QQQ Trust, Series 1 (NASDAQ: QQQ) Delayed: 740.61 -3.6 (0.48%)
Previous Close $744.21    52 Week High $119.66 
Open $735.48    52 Week Low $94.84 
Day High $743.50    P/E N/A 
Day Low $732.62    EPS $0.00 
Volume 40,733,192       

S&P DEP RECEIPTS (NYSE: SPY) Delayed: 757.09 +2.85 (0.38%)
Previous Close $754.24    52 Week High $219.60 
Open $752.10    52 Week Low $181.02 
Day High $758.31    P/E N/A 
Day Low $751.47    EPS $0.00 
Volume 49,907,500